/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Separate.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread/triangular-longest-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-29289db [2021-06-05 07:57:19,438 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-05 07:57:19,440 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-05 07:57:19,463 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-05 07:57:19,471 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-05 07:57:19,472 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-05 07:57:19,473 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-05 07:57:19,474 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-05 07:57:19,474 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-05 07:57:19,475 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-05 07:57:19,477 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-05 07:57:19,478 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-05 07:57:19,479 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-05 07:57:19,480 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-05 07:57:19,481 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-05 07:57:19,482 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-05 07:57:19,484 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-05 07:57:19,491 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-05 07:57:19,492 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-05 07:57:19,492 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-05 07:57:19,493 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Separate.epf [2021-06-05 07:57:19,512 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-05 07:57:19,512 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-05 07:57:19,513 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-05 07:57:19,513 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-05 07:57:19,514 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-05 07:57:19,514 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-05 07:57:19,514 INFO L138 SettingsManager]: * Use SBE=true [2021-06-05 07:57:19,514 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-05 07:57:19,514 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-05 07:57:19,514 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-05 07:57:19,515 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-05 07:57:19,515 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-05 07:57:19,515 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-05 07:57:19,515 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-05 07:57:19,515 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-05 07:57:19,515 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-05 07:57:19,515 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-05 07:57:19,515 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-05 07:57:19,516 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-05 07:57:19,516 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-05 07:57:19,516 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-05 07:57:19,516 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-05 07:57:19,516 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-05 07:57:19,516 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 07:57:19,516 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-05 07:57:19,516 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-05 07:57:19,517 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-05 07:57:19,517 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-05 07:57:19,517 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-05 07:57:19,517 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-05 07:57:19,517 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-05 07:57:19,517 INFO L138 SettingsManager]: * Check the insufficient thread errors last=true [2021-06-05 07:57:19,517 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-05 07:57:19,821 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-05 07:57:19,845 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-05 07:57:19,847 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-05 07:57:19,848 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-05 07:57:19,849 INFO L275 PluginConnector]: CDTParser initialized [2021-06-05 07:57:19,850 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/triangular-longest-1.i [2021-06-05 07:57:19,894 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2d8aef04/7d95b422b19c4886a2525ce3ee25b100/FLAGa7f09c1ef [2021-06-05 07:57:20,380 INFO L306 CDTParser]: Found 1 translation units. [2021-06-05 07:57:20,381 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longest-1.i [2021-06-05 07:57:20,393 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2d8aef04/7d95b422b19c4886a2525ce3ee25b100/FLAGa7f09c1ef [2021-06-05 07:57:20,685 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2d8aef04/7d95b422b19c4886a2525ce3ee25b100 [2021-06-05 07:57:20,687 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-05 07:57:20,689 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-05 07:57:20,695 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-05 07:57:20,695 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-05 07:57:20,699 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-05 07:57:20,699 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.06 07:57:20" (1/1) ... [2021-06-05 07:57:20,700 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a536b49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:57:20, skipping insertion in model container [2021-06-05 07:57:20,701 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.06 07:57:20" (1/1) ... [2021-06-05 07:57:20,706 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-05 07:57:20,753 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-05 07:57:21,033 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longest-1.i[30962,30975] [2021-06-05 07:57:21,059 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-05 07:57:21,074 INFO L203 MainTranslator]: Completed pre-run [2021-06-05 07:57:21,105 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longest-1.i[30962,30975] [2021-06-05 07:57:21,106 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-05 07:57:21,173 INFO L208 MainTranslator]: Completed translation [2021-06-05 07:57:21,174 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:57:21 WrapperNode [2021-06-05 07:57:21,178 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-05 07:57:21,179 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-05 07:57:21,179 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-05 07:57:21,180 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-05 07:57:21,185 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:57:21" (1/1) ... [2021-06-05 07:57:21,196 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:57:21" (1/1) ... [2021-06-05 07:57:21,209 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-05 07:57:21,210 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-05 07:57:21,210 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-05 07:57:21,210 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-05 07:57:21,215 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:57:21" (1/1) ... [2021-06-05 07:57:21,215 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:57:21" (1/1) ... [2021-06-05 07:57:21,217 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:57:21" (1/1) ... [2021-06-05 07:57:21,218 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:57:21" (1/1) ... [2021-06-05 07:57:21,222 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:57:21" (1/1) ... [2021-06-05 07:57:21,225 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:57:21" (1/1) ... [2021-06-05 07:57:21,226 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:57:21" (1/1) ... [2021-06-05 07:57:21,228 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-05 07:57:21,229 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-05 07:57:21,229 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-05 07:57:21,229 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-05 07:57:21,230 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:57:21" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 07:57:21,277 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2021-06-05 07:57:21,277 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2021-06-05 07:57:21,277 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2021-06-05 07:57:21,277 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2021-06-05 07:57:21,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-05 07:57:21,278 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-06-05 07:57:21,278 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-05 07:57:21,278 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-05 07:57:21,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-05 07:57:21,278 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-06-05 07:57:21,278 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-05 07:57:21,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-05 07:57:21,280 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-05 07:57:21,514 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-05 07:57:21,514 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-06-05 07:57:21,516 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 07:57:21 BoogieIcfgContainer [2021-06-05 07:57:21,516 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-05 07:57:21,517 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-05 07:57:21,517 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-05 07:57:21,520 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-05 07:57:21,520 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.06 07:57:20" (1/3) ... [2021-06-05 07:57:21,520 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5da4741a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 07:57:21, skipping insertion in model container [2021-06-05 07:57:21,520 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:57:21" (2/3) ... [2021-06-05 07:57:21,521 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5da4741a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 07:57:21, skipping insertion in model container [2021-06-05 07:57:21,521 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 07:57:21" (3/3) ... [2021-06-05 07:57:21,522 INFO L111 eAbstractionObserver]: Analyzing ICFG triangular-longest-1.i [2021-06-05 07:57:21,526 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-05 07:57:21,527 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-05 07:57:21,527 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-05 07:57:21,527 INFO L510 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-05 07:57:21,550 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:57:21,551 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:57:21,551 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:57:21,551 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:57:21,551 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:57:21,551 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:57:21,551 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:57:21,552 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:57:21,552 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:57:21,552 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:57:21,552 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:57:21,552 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:57:21,553 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:57:21,553 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:57:21,553 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:57:21,553 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:57:21,553 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:57:21,553 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:57:21,554 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:57:21,554 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:57:21,554 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:57:21,554 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:57:21,554 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:57:21,555 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:57:21,555 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:57:21,555 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:57:21,555 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:57:21,555 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:57:21,556 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:57:21,556 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:57:21,556 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:57:21,556 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:57:21,556 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:57:21,556 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:57:21,556 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:57:21,557 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:57:21,557 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:57:21,557 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:57:21,557 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:57:21,557 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:57:21,558 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:57:21,558 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:57:21,558 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:57:21,558 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:57:21,558 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:57:21,559 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:57:21,559 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:57:21,559 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:57:21,559 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:57:21,559 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:57:21,560 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:57:21,560 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:57:21,560 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:57:21,560 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:57:21,560 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:57:21,560 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:57:21,562 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:57:21,562 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:57:21,563 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:57:21,563 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:57:21,563 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:57:21,563 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:57:21,582 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:57:21,583 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:57:21,583 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:57:21,583 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:57:21,583 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:57:21,583 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:57:21,585 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-05 07:57:21,613 INFO L255 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-06-05 07:57:21,638 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 07:57:21,638 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 07:57:21,639 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 07:57:21,639 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 07:57:21,639 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 07:57:21,639 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 07:57:21,639 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 07:57:21,639 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-05 07:57:21,652 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 68 places, 66 transitions, 142 flow [2021-06-05 07:57:21,747 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1680 states, 1678 states have (on average 3.138259833134684) internal successors, (5266), 1679 states have internal predecessors, (5266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:21,753 INFO L276 IsEmpty]: Start isEmpty. Operand has 1680 states, 1678 states have (on average 3.138259833134684) internal successors, (5266), 1679 states have internal predecessors, (5266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:21,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-06-05 07:57:21,767 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:57:21,768 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:57:21,768 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:57:21,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:57:21,773 INFO L82 PathProgramCache]: Analyzing trace with hash 855509438, now seen corresponding path program 1 times [2021-06-05 07:57:21,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:57:21,782 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138220297] [2021-06-05 07:57:21,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:57:21,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:57:22,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:22,166 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:57:22,167 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138220297] [2021-06-05 07:57:22,167 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138220297] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:57:22,168 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:57:22,169 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 07:57:22,170 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310900824] [2021-06-05 07:57:22,176 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-05 07:57:22,176 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:57:22,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-05 07:57:22,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-06-05 07:57:22,200 INFO L87 Difference]: Start difference. First operand has 1680 states, 1678 states have (on average 3.138259833134684) internal successors, (5266), 1679 states have internal predecessors, (5266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:22,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:57:22,386 INFO L93 Difference]: Finished difference Result 3294 states and 9568 transitions. [2021-06-05 07:57:22,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 07:57:22,387 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-06-05 07:57:22,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:57:22,411 INFO L225 Difference]: With dead ends: 3294 [2021-06-05 07:57:22,411 INFO L226 Difference]: Without dead ends: 1248 [2021-06-05 07:57:22,412 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 78.7ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-06-05 07:57:22,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1248 states. [2021-06-05 07:57:22,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1248 to 800. [2021-06-05 07:57:22,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 800 states, 799 states have (on average 2.728410513141427) internal successors, (2180), 799 states have internal predecessors, (2180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:22,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 800 states to 800 states and 2180 transitions. [2021-06-05 07:57:22,536 INFO L78 Accepts]: Start accepts. Automaton has 800 states and 2180 transitions. Word has length 32 [2021-06-05 07:57:22,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:57:22,536 INFO L482 AbstractCegarLoop]: Abstraction has 800 states and 2180 transitions. [2021-06-05 07:57:22,536 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:22,536 INFO L276 IsEmpty]: Start isEmpty. Operand 800 states and 2180 transitions. [2021-06-05 07:57:22,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-06-05 07:57:22,542 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:57:22,543 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:57:22,543 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-05 07:57:22,543 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:57:22,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:57:22,544 INFO L82 PathProgramCache]: Analyzing trace with hash 2058414913, now seen corresponding path program 1 times [2021-06-05 07:57:22,544 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:57:22,544 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221280858] [2021-06-05 07:57:22,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:57:22,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:57:22,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:22,647 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:57:22,648 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221280858] [2021-06-05 07:57:22,648 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221280858] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:57:22,648 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:57:22,648 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 07:57:22,648 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538100793] [2021-06-05 07:57:22,649 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-05 07:57:22,650 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:57:22,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-05 07:57:22,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-05 07:57:22,651 INFO L87 Difference]: Start difference. First operand 800 states and 2180 transitions. Second operand has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:22,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:57:22,740 INFO L93 Difference]: Finished difference Result 1302 states and 3436 transitions. [2021-06-05 07:57:22,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 07:57:22,741 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-06-05 07:57:22,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:57:22,745 INFO L225 Difference]: With dead ends: 1302 [2021-06-05 07:57:22,746 INFO L226 Difference]: Without dead ends: 920 [2021-06-05 07:57:22,746 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 62.4ms TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-06-05 07:57:22,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 920 states. [2021-06-05 07:57:22,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 920 to 864. [2021-06-05 07:57:22,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 864 states, 863 states have (on average 2.6882966396292005) internal successors, (2320), 863 states have internal predecessors, (2320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:22,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 864 states to 864 states and 2320 transitions. [2021-06-05 07:57:22,773 INFO L78 Accepts]: Start accepts. Automaton has 864 states and 2320 transitions. Word has length 36 [2021-06-05 07:57:22,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:57:22,773 INFO L482 AbstractCegarLoop]: Abstraction has 864 states and 2320 transitions. [2021-06-05 07:57:22,774 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:22,774 INFO L276 IsEmpty]: Start isEmpty. Operand 864 states and 2320 transitions. [2021-06-05 07:57:22,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-06-05 07:57:22,776 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:57:22,777 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:57:22,777 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-05 07:57:22,777 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:57:22,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:57:22,784 INFO L82 PathProgramCache]: Analyzing trace with hash 307394794, now seen corresponding path program 1 times [2021-06-05 07:57:22,784 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:57:22,785 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335029202] [2021-06-05 07:57:22,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:57:22,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:57:22,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:22,905 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:57:22,905 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335029202] [2021-06-05 07:57:22,905 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335029202] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:57:22,906 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:57:22,906 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 07:57:22,906 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068667974] [2021-06-05 07:57:22,906 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 07:57:22,906 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:57:22,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 07:57:22,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-05 07:57:22,907 INFO L87 Difference]: Start difference. First operand 864 states and 2320 transitions. Second operand has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:23,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:57:23,090 INFO L93 Difference]: Finished difference Result 1304 states and 3456 transitions. [2021-06-05 07:57:23,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-05 07:57:23,090 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-06-05 07:57:23,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:57:23,096 INFO L225 Difference]: With dead ends: 1304 [2021-06-05 07:57:23,096 INFO L226 Difference]: Without dead ends: 1044 [2021-06-05 07:57:23,097 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 114.3ms TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2021-06-05 07:57:23,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1044 states. [2021-06-05 07:57:23,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1044 to 876. [2021-06-05 07:57:23,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 876 states, 875 states have (on average 2.7062857142857144) internal successors, (2368), 875 states have internal predecessors, (2368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:23,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 876 states to 876 states and 2368 transitions. [2021-06-05 07:57:23,120 INFO L78 Accepts]: Start accepts. Automaton has 876 states and 2368 transitions. Word has length 40 [2021-06-05 07:57:23,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:57:23,121 INFO L482 AbstractCegarLoop]: Abstraction has 876 states and 2368 transitions. [2021-06-05 07:57:23,121 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:23,121 INFO L276 IsEmpty]: Start isEmpty. Operand 876 states and 2368 transitions. [2021-06-05 07:57:23,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-06-05 07:57:23,124 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:57:23,125 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:57:23,125 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-05 07:57:23,125 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:57:23,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:57:23,126 INFO L82 PathProgramCache]: Analyzing trace with hash -258094508, now seen corresponding path program 2 times [2021-06-05 07:57:23,126 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:57:23,127 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752297351] [2021-06-05 07:57:23,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:57:23,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:57:23,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:23,256 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:57:23,256 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752297351] [2021-06-05 07:57:23,256 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752297351] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:57:23,256 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:57:23,256 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 07:57:23,257 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399360748] [2021-06-05 07:57:23,257 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 07:57:23,258 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:57:23,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 07:57:23,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-06-05 07:57:23,261 INFO L87 Difference]: Start difference. First operand 876 states and 2368 transitions. Second operand has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:23,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:57:23,360 INFO L93 Difference]: Finished difference Result 1772 states and 4744 transitions. [2021-06-05 07:57:23,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-05 07:57:23,363 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-06-05 07:57:23,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:57:23,370 INFO L225 Difference]: With dead ends: 1772 [2021-06-05 07:57:23,372 INFO L226 Difference]: Without dead ends: 1505 [2021-06-05 07:57:23,373 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 70.3ms TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-06-05 07:57:23,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1505 states. [2021-06-05 07:57:23,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1505 to 975. [2021-06-05 07:57:23,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 975 states, 974 states have (on average 2.6981519507186857) internal successors, (2628), 974 states have internal predecessors, (2628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:23,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 975 states to 975 states and 2628 transitions. [2021-06-05 07:57:23,403 INFO L78 Accepts]: Start accepts. Automaton has 975 states and 2628 transitions. Word has length 40 [2021-06-05 07:57:23,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:57:23,404 INFO L482 AbstractCegarLoop]: Abstraction has 975 states and 2628 transitions. [2021-06-05 07:57:23,404 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:23,405 INFO L276 IsEmpty]: Start isEmpty. Operand 975 states and 2628 transitions. [2021-06-05 07:57:23,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-06-05 07:57:23,406 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:57:23,406 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:57:23,406 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-05 07:57:23,407 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:57:23,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:57:23,407 INFO L82 PathProgramCache]: Analyzing trace with hash 129784312, now seen corresponding path program 3 times [2021-06-05 07:57:23,407 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:57:23,407 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979886307] [2021-06-05 07:57:23,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:57:23,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:57:23,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:23,489 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:57:23,489 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979886307] [2021-06-05 07:57:23,489 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979886307] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:57:23,489 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:57:23,489 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 07:57:23,489 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207188736] [2021-06-05 07:57:23,490 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 07:57:23,490 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:57:23,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 07:57:23,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-05 07:57:23,490 INFO L87 Difference]: Start difference. First operand 975 states and 2628 transitions. Second operand has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:23,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:57:23,593 INFO L93 Difference]: Finished difference Result 2211 states and 5878 transitions. [2021-06-05 07:57:23,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-05 07:57:23,594 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-06-05 07:57:23,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:57:23,602 INFO L225 Difference]: With dead ends: 2211 [2021-06-05 07:57:23,602 INFO L226 Difference]: Without dead ends: 1944 [2021-06-05 07:57:23,603 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 60.9ms TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-06-05 07:57:23,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1944 states. [2021-06-05 07:57:23,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1944 to 1127. [2021-06-05 07:57:23,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1127 states, 1126 states have (on average 2.769982238010657) internal successors, (3119), 1126 states have internal predecessors, (3119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:23,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1127 states to 1127 states and 3119 transitions. [2021-06-05 07:57:23,640 INFO L78 Accepts]: Start accepts. Automaton has 1127 states and 3119 transitions. Word has length 40 [2021-06-05 07:57:23,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:57:23,640 INFO L482 AbstractCegarLoop]: Abstraction has 1127 states and 3119 transitions. [2021-06-05 07:57:23,640 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:23,640 INFO L276 IsEmpty]: Start isEmpty. Operand 1127 states and 3119 transitions. [2021-06-05 07:57:23,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-06-05 07:57:23,642 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:57:23,642 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:57:23,642 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-05 07:57:23,642 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:57:23,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:57:23,642 INFO L82 PathProgramCache]: Analyzing trace with hash 152127562, now seen corresponding path program 4 times [2021-06-05 07:57:23,643 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:57:23,643 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061551940] [2021-06-05 07:57:23,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:57:23,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:57:23,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:23,745 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:57:23,745 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061551940] [2021-06-05 07:57:23,745 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061551940] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:57:23,748 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:57:23,748 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 07:57:23,748 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617055636] [2021-06-05 07:57:23,748 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 07:57:23,748 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:57:23,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 07:57:23,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-05 07:57:23,749 INFO L87 Difference]: Start difference. First operand 1127 states and 3119 transitions. Second operand has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:23,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:57:23,885 INFO L93 Difference]: Finished difference Result 1671 states and 4527 transitions. [2021-06-05 07:57:23,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-05 07:57:23,886 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-06-05 07:57:23,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:57:23,892 INFO L225 Difference]: With dead ends: 1671 [2021-06-05 07:57:23,893 INFO L226 Difference]: Without dead ends: 1173 [2021-06-05 07:57:23,894 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 110.2ms TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2021-06-05 07:57:23,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1173 states. [2021-06-05 07:57:23,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1173 to 922. [2021-06-05 07:57:23,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 922 states, 921 states have (on average 2.732899022801303) internal successors, (2517), 921 states have internal predecessors, (2517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:23,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 922 states to 922 states and 2517 transitions. [2021-06-05 07:57:23,918 INFO L78 Accepts]: Start accepts. Automaton has 922 states and 2517 transitions. Word has length 40 [2021-06-05 07:57:23,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:57:23,919 INFO L482 AbstractCegarLoop]: Abstraction has 922 states and 2517 transitions. [2021-06-05 07:57:23,919 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:23,919 INFO L276 IsEmpty]: Start isEmpty. Operand 922 states and 2517 transitions. [2021-06-05 07:57:23,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-06-05 07:57:23,920 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:57:23,920 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:57:23,921 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-05 07:57:23,921 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:57:23,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:57:23,921 INFO L82 PathProgramCache]: Analyzing trace with hash 1301576209, now seen corresponding path program 1 times [2021-06-05 07:57:23,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:57:23,922 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80934315] [2021-06-05 07:57:23,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:57:23,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:57:24,045 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:24,045 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:57:24,045 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80934315] [2021-06-05 07:57:24,045 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80934315] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:24,045 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2044217258] [2021-06-05 07:57:24,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:57:24,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:57:24,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 07:57:24,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:57:24,299 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:24,300 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2044217258] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:24,300 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:57:24,300 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2021-06-05 07:57:24,300 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328954786] [2021-06-05 07:57:24,301 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 07:57:24,301 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:57:24,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 07:57:24,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-06-05 07:57:24,302 INFO L87 Difference]: Start difference. First operand 922 states and 2517 transitions. Second operand has 10 states, 10 states have (on average 5.7) internal successors, (57), 10 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:24,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:57:24,495 INFO L93 Difference]: Finished difference Result 1526 states and 4027 transitions. [2021-06-05 07:57:24,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-06-05 07:57:24,496 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.7) internal successors, (57), 10 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-06-05 07:57:24,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:57:24,502 INFO L225 Difference]: With dead ends: 1526 [2021-06-05 07:57:24,502 INFO L226 Difference]: Without dead ends: 1256 [2021-06-05 07:57:24,502 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 134.6ms TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:57:24,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1256 states. [2021-06-05 07:57:24,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1256 to 1113. [2021-06-05 07:57:24,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1113 states, 1112 states have (on average 2.741007194244604) internal successors, (3048), 1112 states have internal predecessors, (3048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:24,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1113 states to 1113 states and 3048 transitions. [2021-06-05 07:57:24,537 INFO L78 Accepts]: Start accepts. Automaton has 1113 states and 3048 transitions. Word has length 45 [2021-06-05 07:57:24,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:57:24,538 INFO L482 AbstractCegarLoop]: Abstraction has 1113 states and 3048 transitions. [2021-06-05 07:57:24,538 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 5.7) internal successors, (57), 10 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:24,538 INFO L276 IsEmpty]: Start isEmpty. Operand 1113 states and 3048 transitions. [2021-06-05 07:57:24,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-06-05 07:57:24,540 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:57:24,540 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:57:24,764 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-06-05 07:57:24,764 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:57:24,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:57:24,765 INFO L82 PathProgramCache]: Analyzing trace with hash 1689455029, now seen corresponding path program 2 times [2021-06-05 07:57:24,765 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:57:24,765 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022714098] [2021-06-05 07:57:24,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:57:24,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:57:24,852 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:24,853 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:57:24,853 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022714098] [2021-06-05 07:57:24,855 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022714098] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:24,855 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [146687762] [2021-06-05 07:57:24,855 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:57:24,918 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 07:57:24,919 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:57:24,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 07:57:24,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:57:25,053 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:25,053 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [146687762] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:25,053 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:57:25,054 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2021-06-05 07:57:25,054 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642982109] [2021-06-05 07:57:25,055 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 07:57:25,056 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:57:25,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 07:57:25,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-06-05 07:57:25,057 INFO L87 Difference]: Start difference. First operand 1113 states and 3048 transitions. Second operand has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:25,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:57:25,186 INFO L93 Difference]: Finished difference Result 2408 states and 6431 transitions. [2021-06-05 07:57:25,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-05 07:57:25,187 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-06-05 07:57:25,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:57:25,196 INFO L225 Difference]: With dead ends: 2408 [2021-06-05 07:57:25,196 INFO L226 Difference]: Without dead ends: 2138 [2021-06-05 07:57:25,196 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 103.7ms TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:57:25,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2138 states. [2021-06-05 07:57:25,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2138 to 1293. [2021-06-05 07:57:25,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1293 states, 1292 states have (on average 2.791795665634675) internal successors, (3607), 1292 states have internal predecessors, (3607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:25,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1293 states to 1293 states and 3607 transitions. [2021-06-05 07:57:25,235 INFO L78 Accepts]: Start accepts. Automaton has 1293 states and 3607 transitions. Word has length 45 [2021-06-05 07:57:25,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:57:25,236 INFO L482 AbstractCegarLoop]: Abstraction has 1293 states and 3607 transitions. [2021-06-05 07:57:25,236 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:25,236 INFO L276 IsEmpty]: Start isEmpty. Operand 1293 states and 3607 transitions. [2021-06-05 07:57:25,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-06-05 07:57:25,237 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:57:25,238 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:57:25,451 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:57:25,452 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:57:25,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:57:25,452 INFO L82 PathProgramCache]: Analyzing trace with hash 1711798279, now seen corresponding path program 3 times [2021-06-05 07:57:25,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:57:25,452 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876297484] [2021-06-05 07:57:25,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:57:25,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:57:25,513 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:25,513 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:57:25,513 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876297484] [2021-06-05 07:57:25,514 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876297484] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:25,514 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1165837184] [2021-06-05 07:57:25,514 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:57:25,581 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-06-05 07:57:25,581 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:57:25,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 07:57:25,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:57:25,679 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:25,680 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1165837184] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:25,680 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:57:25,680 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2021-06-05 07:57:25,680 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388681015] [2021-06-05 07:57:25,680 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 07:57:25,680 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:57:25,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 07:57:25,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-06-05 07:57:25,681 INFO L87 Difference]: Start difference. First operand 1293 states and 3607 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:25,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:57:25,934 INFO L93 Difference]: Finished difference Result 2196 states and 5861 transitions. [2021-06-05 07:57:25,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-05 07:57:25,935 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-06-05 07:57:25,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:57:25,941 INFO L225 Difference]: With dead ends: 2196 [2021-06-05 07:57:25,941 INFO L226 Difference]: Without dead ends: 1621 [2021-06-05 07:57:25,942 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 208.1ms TimeCoverageRelationStatistics Valid=132, Invalid=374, Unknown=0, NotChecked=0, Total=506 [2021-06-05 07:57:25,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1621 states. [2021-06-05 07:57:25,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1621 to 1328. [2021-06-05 07:57:25,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1328 states, 1327 states have (on average 2.7754333082140166) internal successors, (3683), 1327 states have internal predecessors, (3683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:25,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1328 states to 1328 states and 3683 transitions. [2021-06-05 07:57:25,976 INFO L78 Accepts]: Start accepts. Automaton has 1328 states and 3683 transitions. Word has length 45 [2021-06-05 07:57:25,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:57:25,976 INFO L482 AbstractCegarLoop]: Abstraction has 1328 states and 3683 transitions. [2021-06-05 07:57:25,976 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:25,977 INFO L276 IsEmpty]: Start isEmpty. Operand 1328 states and 3683 transitions. [2021-06-05 07:57:25,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-06-05 07:57:25,978 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:57:25,979 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:57:26,202 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:57:26,202 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:57:26,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:57:26,202 INFO L82 PathProgramCache]: Analyzing trace with hash -1229914011, now seen corresponding path program 1 times [2021-06-05 07:57:26,202 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:57:26,203 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976110003] [2021-06-05 07:57:26,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:57:26,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:57:26,292 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:26,292 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:57:26,292 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976110003] [2021-06-05 07:57:26,293 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976110003] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:26,293 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [485052708] [2021-06-05 07:57:26,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:57:26,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:57:26,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 11 conjunts are in the unsatisfiable core [2021-06-05 07:57:26,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:57:26,479 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:26,479 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [485052708] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:26,479 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:57:26,480 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 12 [2021-06-05 07:57:26,480 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879208582] [2021-06-05 07:57:26,480 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 07:57:26,480 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:57:26,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 07:57:26,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-06-05 07:57:26,481 INFO L87 Difference]: Start difference. First operand 1328 states and 3683 transitions. Second operand has 12 states, 12 states have (on average 6.5) internal successors, (78), 12 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:26,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:57:26,643 INFO L93 Difference]: Finished difference Result 2068 states and 5483 transitions. [2021-06-05 07:57:26,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-05 07:57:26,644 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.5) internal successors, (78), 12 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-06-05 07:57:26,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:57:26,651 INFO L225 Difference]: With dead ends: 2068 [2021-06-05 07:57:26,651 INFO L226 Difference]: Without dead ends: 1734 [2021-06-05 07:57:26,652 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 152.1ms TimeCoverageRelationStatistics Valid=120, Invalid=342, Unknown=0, NotChecked=0, Total=462 [2021-06-05 07:57:26,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1734 states. [2021-06-05 07:57:26,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1734 to 1413. [2021-06-05 07:57:26,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1413 states, 1412 states have (on average 2.7287535410764874) internal successors, (3853), 1412 states have internal predecessors, (3853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:26,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1413 states to 1413 states and 3853 transitions. [2021-06-05 07:57:26,683 INFO L78 Accepts]: Start accepts. Automaton has 1413 states and 3853 transitions. Word has length 50 [2021-06-05 07:57:26,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:57:26,683 INFO L482 AbstractCegarLoop]: Abstraction has 1413 states and 3853 transitions. [2021-06-05 07:57:26,684 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 6.5) internal successors, (78), 12 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:26,684 INFO L276 IsEmpty]: Start isEmpty. Operand 1413 states and 3853 transitions. [2021-06-05 07:57:26,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-06-05 07:57:26,686 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:57:26,686 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:57:26,903 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:57:26,903 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:57:26,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:57:26,903 INFO L82 PathProgramCache]: Analyzing trace with hash -1568318167, now seen corresponding path program 2 times [2021-06-05 07:57:26,903 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:57:26,904 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458908966] [2021-06-05 07:57:26,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:57:26,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:57:26,994 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:26,994 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:57:26,994 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458908966] [2021-06-05 07:57:26,994 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458908966] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:26,994 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [18716638] [2021-06-05 07:57:26,994 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:57:27,056 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 07:57:27,056 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:57:27,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 10 conjunts are in the unsatisfiable core [2021-06-05 07:57:27,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:57:27,135 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:27,136 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [18716638] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:27,136 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:57:27,136 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2021-06-05 07:57:27,136 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236782835] [2021-06-05 07:57:27,136 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 07:57:27,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:57:27,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 07:57:27,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-06-05 07:57:27,137 INFO L87 Difference]: Start difference. First operand 1413 states and 3853 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:27,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:57:27,245 INFO L93 Difference]: Finished difference Result 2061 states and 5277 transitions. [2021-06-05 07:57:27,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-05 07:57:27,245 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-06-05 07:57:27,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:57:27,252 INFO L225 Difference]: With dead ends: 2061 [2021-06-05 07:57:27,252 INFO L226 Difference]: Without dead ends: 1791 [2021-06-05 07:57:27,253 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 80.1ms TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:57:27,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1791 states. [2021-06-05 07:57:27,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1791 to 1428. [2021-06-05 07:57:27,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 1427 states have (on average 2.721093202522775) internal successors, (3883), 1427 states have internal predecessors, (3883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:27,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 3883 transitions. [2021-06-05 07:57:27,304 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 3883 transitions. Word has length 50 [2021-06-05 07:57:27,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:57:27,304 INFO L482 AbstractCegarLoop]: Abstraction has 1428 states and 3883 transitions. [2021-06-05 07:57:27,304 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:27,304 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 3883 transitions. [2021-06-05 07:57:27,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-06-05 07:57:27,306 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:57:27,306 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:57:27,524 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-06-05 07:57:27,525 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:57:27,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:57:27,525 INFO L82 PathProgramCache]: Analyzing trace with hash 1011406841, now seen corresponding path program 3 times [2021-06-05 07:57:27,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:57:27,525 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809784888] [2021-06-05 07:57:27,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:57:27,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:57:27,601 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:27,601 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:57:27,601 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809784888] [2021-06-05 07:57:27,601 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809784888] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:27,601 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1532593657] [2021-06-05 07:57:27,601 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:57:27,654 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 07:57:27,654 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:57:27,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 10 conjunts are in the unsatisfiable core [2021-06-05 07:57:27,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:57:27,760 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:27,761 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1532593657] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:27,761 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:57:27,761 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2021-06-05 07:57:27,761 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325348565] [2021-06-05 07:57:27,762 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 07:57:27,762 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:57:27,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 07:57:27,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-06-05 07:57:27,763 INFO L87 Difference]: Start difference. First operand 1428 states and 3883 transitions. Second operand has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:27,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:57:27,981 INFO L93 Difference]: Finished difference Result 2006 states and 5197 transitions. [2021-06-05 07:57:27,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-05 07:57:27,981 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-06-05 07:57:27,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:57:27,991 INFO L225 Difference]: With dead ends: 2006 [2021-06-05 07:57:27,992 INFO L226 Difference]: Without dead ends: 1736 [2021-06-05 07:57:27,992 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 163.5ms TimeCoverageRelationStatistics Valid=99, Invalid=281, Unknown=0, NotChecked=0, Total=380 [2021-06-05 07:57:27,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1736 states. [2021-06-05 07:57:28,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1736 to 1428. [2021-06-05 07:57:28,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 1427 states have (on average 2.7245970567624385) internal successors, (3888), 1427 states have internal predecessors, (3888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:28,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 3888 transitions. [2021-06-05 07:57:28,025 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 3888 transitions. Word has length 50 [2021-06-05 07:57:28,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:57:28,025 INFO L482 AbstractCegarLoop]: Abstraction has 1428 states and 3888 transitions. [2021-06-05 07:57:28,025 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:28,025 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 3888 transitions. [2021-06-05 07:57:28,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-06-05 07:57:28,027 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:57:28,028 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:57:28,246 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:57:28,246 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:57:28,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:57:28,247 INFO L82 PathProgramCache]: Analyzing trace with hash -21240761, now seen corresponding path program 4 times [2021-06-05 07:57:28,247 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:57:28,247 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022054582] [2021-06-05 07:57:28,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:57:28,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:57:28,305 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:28,305 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:57:28,305 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022054582] [2021-06-05 07:57:28,305 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022054582] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:28,305 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1997743161] [2021-06-05 07:57:28,306 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:57:28,379 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 07:57:28,380 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:57:28,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 10 conjunts are in the unsatisfiable core [2021-06-05 07:57:28,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:57:28,461 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:28,461 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1997743161] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:28,461 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:57:28,461 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2021-06-05 07:57:28,462 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962088426] [2021-06-05 07:57:28,462 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 07:57:28,462 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:57:28,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 07:57:28,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-06-05 07:57:28,463 INFO L87 Difference]: Start difference. First operand 1428 states and 3888 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:28,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:57:28,591 INFO L93 Difference]: Finished difference Result 2798 states and 7421 transitions. [2021-06-05 07:57:28,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-05 07:57:28,592 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-06-05 07:57:28,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:57:28,597 INFO L225 Difference]: With dead ends: 2798 [2021-06-05 07:57:28,598 INFO L226 Difference]: Without dead ends: 2528 [2021-06-05 07:57:28,598 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 90.9ms TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2021-06-05 07:57:28,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2528 states. [2021-06-05 07:57:28,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2528 to 1608. [2021-06-05 07:57:28,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1608 states, 1607 states have (on average 2.7672682016179215) internal successors, (4447), 1607 states have internal predecessors, (4447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:28,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1608 states to 1608 states and 4447 transitions. [2021-06-05 07:57:28,635 INFO L78 Accepts]: Start accepts. Automaton has 1608 states and 4447 transitions. Word has length 50 [2021-06-05 07:57:28,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:57:28,635 INFO L482 AbstractCegarLoop]: Abstraction has 1608 states and 4447 transitions. [2021-06-05 07:57:28,636 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:28,636 INFO L276 IsEmpty]: Start isEmpty. Operand 1608 states and 4447 transitions. [2021-06-05 07:57:28,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-06-05 07:57:28,638 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:57:28,638 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:57:28,852 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:57:28,853 INFO L430 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:57:28,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:57:28,853 INFO L82 PathProgramCache]: Analyzing trace with hash 1102489, now seen corresponding path program 5 times [2021-06-05 07:57:28,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:57:28,853 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854508065] [2021-06-05 07:57:28,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:57:28,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:57:28,931 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:28,931 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:57:28,931 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854508065] [2021-06-05 07:57:28,932 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854508065] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:28,932 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1241297573] [2021-06-05 07:57:28,932 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:57:29,048 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 07:57:29,048 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:57:29,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 10 conjunts are in the unsatisfiable core [2021-06-05 07:57:29,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:57:29,131 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:29,131 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1241297573] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:29,131 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:57:29,131 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2021-06-05 07:57:29,132 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053707274] [2021-06-05 07:57:29,132 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 07:57:29,132 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:57:29,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 07:57:29,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-06-05 07:57:29,132 INFO L87 Difference]: Start difference. First operand 1608 states and 4447 transitions. Second operand has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:29,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:57:29,361 INFO L93 Difference]: Finished difference Result 2285 states and 6121 transitions. [2021-06-05 07:57:29,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-05 07:57:29,361 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-06-05 07:57:29,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:57:29,365 INFO L225 Difference]: With dead ends: 2285 [2021-06-05 07:57:29,365 INFO L226 Difference]: Without dead ends: 1706 [2021-06-05 07:57:29,366 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 176.2ms TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2021-06-05 07:57:29,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1706 states. [2021-06-05 07:57:29,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1706 to 1313. [2021-06-05 07:57:29,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1313 states, 1312 states have (on average 2.7271341463414633) internal successors, (3578), 1312 states have internal predecessors, (3578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:29,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1313 states to 1313 states and 3578 transitions. [2021-06-05 07:57:29,393 INFO L78 Accepts]: Start accepts. Automaton has 1313 states and 3578 transitions. Word has length 50 [2021-06-05 07:57:29,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:57:29,393 INFO L482 AbstractCegarLoop]: Abstraction has 1313 states and 3578 transitions. [2021-06-05 07:57:29,393 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:29,393 INFO L276 IsEmpty]: Start isEmpty. Operand 1313 states and 3578 transitions. [2021-06-05 07:57:29,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-06-05 07:57:29,395 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:57:29,395 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:57:29,619 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-06-05 07:57:29,619 INFO L430 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:57:29,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:57:29,620 INFO L82 PathProgramCache]: Analyzing trace with hash 117785766, now seen corresponding path program 6 times [2021-06-05 07:57:29,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:57:29,620 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820555462] [2021-06-05 07:57:29,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:57:29,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:57:29,707 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 07:57:29,708 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:57:29,708 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820555462] [2021-06-05 07:57:29,708 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820555462] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:29,708 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [425735378] [2021-06-05 07:57:29,708 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:57:29,769 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 07:57:29,770 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:57:29,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 11 conjunts are in the unsatisfiable core [2021-06-05 07:57:29,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:57:29,853 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:29,853 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [425735378] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:29,853 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:57:29,853 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2021-06-05 07:57:29,853 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674874023] [2021-06-05 07:57:29,854 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 07:57:29,854 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:57:29,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 07:57:29,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-06-05 07:57:29,854 INFO L87 Difference]: Start difference. First operand 1313 states and 3578 transitions. Second operand has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:30,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:57:30,014 INFO L93 Difference]: Finished difference Result 1931 states and 5017 transitions. [2021-06-05 07:57:30,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-05 07:57:30,015 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-06-05 07:57:30,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:57:30,018 INFO L225 Difference]: With dead ends: 1931 [2021-06-05 07:57:30,018 INFO L226 Difference]: Without dead ends: 1661 [2021-06-05 07:57:30,019 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 124.7ms TimeCoverageRelationStatistics Valid=106, Invalid=314, Unknown=0, NotChecked=0, Total=420 [2021-06-05 07:57:30,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1661 states. [2021-06-05 07:57:30,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1661 to 1388. [2021-06-05 07:57:30,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1388 states, 1387 states have (on average 2.741888968997837) internal successors, (3803), 1387 states have internal predecessors, (3803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:30,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1388 states to 1388 states and 3803 transitions. [2021-06-05 07:57:30,045 INFO L78 Accepts]: Start accepts. Automaton has 1388 states and 3803 transitions. Word has length 55 [2021-06-05 07:57:30,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:57:30,045 INFO L482 AbstractCegarLoop]: Abstraction has 1388 states and 3803 transitions. [2021-06-05 07:57:30,045 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:30,045 INFO L276 IsEmpty]: Start isEmpty. Operand 1388 states and 3803 transitions. [2021-06-05 07:57:30,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-06-05 07:57:30,047 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:57:30,047 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:57:30,268 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-06-05 07:57:30,269 INFO L430 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:57:30,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:57:30,269 INFO L82 PathProgramCache]: Analyzing trace with hash -1597456522, now seen corresponding path program 7 times [2021-06-05 07:57:30,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:57:30,269 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613264497] [2021-06-05 07:57:30,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:57:30,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:57:30,338 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:30,338 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:57:30,338 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613264497] [2021-06-05 07:57:30,338 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613264497] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:30,339 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [815999723] [2021-06-05 07:57:30,339 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:57:30,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:57:30,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 11 conjunts are in the unsatisfiable core [2021-06-05 07:57:30,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:57:30,529 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:30,529 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [815999723] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:30,530 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:57:30,530 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 12 [2021-06-05 07:57:30,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505564028] [2021-06-05 07:57:30,530 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 07:57:30,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:57:30,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 07:57:30,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-06-05 07:57:30,531 INFO L87 Difference]: Start difference. First operand 1388 states and 3803 transitions. Second operand has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 12 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:30,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:57:30,753 INFO L93 Difference]: Finished difference Result 2111 states and 5497 transitions. [2021-06-05 07:57:30,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-06-05 07:57:30,754 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 12 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-06-05 07:57:30,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:57:30,757 INFO L225 Difference]: With dead ends: 2111 [2021-06-05 07:57:30,757 INFO L226 Difference]: Without dead ends: 1841 [2021-06-05 07:57:30,758 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 208.6ms TimeCoverageRelationStatistics Valid=140, Invalid=412, Unknown=0, NotChecked=0, Total=552 [2021-06-05 07:57:30,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1841 states. [2021-06-05 07:57:30,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1841 to 1463. [2021-06-05 07:57:30,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1463 states, 1462 states have (on average 2.7688098495212037) internal successors, (4048), 1462 states have internal predecessors, (4048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:30,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1463 states to 1463 states and 4048 transitions. [2021-06-05 07:57:30,792 INFO L78 Accepts]: Start accepts. Automaton has 1463 states and 4048 transitions. Word has length 55 [2021-06-05 07:57:30,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:57:30,792 INFO L482 AbstractCegarLoop]: Abstraction has 1463 states and 4048 transitions. [2021-06-05 07:57:30,793 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 12 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:30,793 INFO L276 IsEmpty]: Start isEmpty. Operand 1463 states and 4048 transitions. [2021-06-05 07:57:30,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-06-05 07:57:30,795 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:57:30,795 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:57:31,019 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-06-05 07:57:31,019 INFO L430 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:57:31,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:57:31,020 INFO L82 PathProgramCache]: Analyzing trace with hash 1664863172, now seen corresponding path program 8 times [2021-06-05 07:57:31,020 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:57:31,020 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467032953] [2021-06-05 07:57:31,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:57:31,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:57:31,097 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:31,097 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:57:31,097 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467032953] [2021-06-05 07:57:31,097 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467032953] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:31,097 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1845719397] [2021-06-05 07:57:31,098 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:57:31,156 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 07:57:31,156 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:57:31,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 11 conjunts are in the unsatisfiable core [2021-06-05 07:57:31,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:57:31,237 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:31,238 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1845719397] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:31,238 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:57:31,238 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2021-06-05 07:57:31,238 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655817557] [2021-06-05 07:57:31,238 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 07:57:31,239 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:57:31,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 07:57:31,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-06-05 07:57:31,241 INFO L87 Difference]: Start difference. First operand 1463 states and 4048 transitions. Second operand has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:31,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:57:31,452 INFO L93 Difference]: Finished difference Result 2858 states and 7631 transitions. [2021-06-05 07:57:31,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-05 07:57:31,453 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-06-05 07:57:31,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:57:31,458 INFO L225 Difference]: With dead ends: 2858 [2021-06-05 07:57:31,458 INFO L226 Difference]: Without dead ends: 2588 [2021-06-05 07:57:31,459 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 146.0ms TimeCoverageRelationStatistics Valid=153, Invalid=399, Unknown=0, NotChecked=0, Total=552 [2021-06-05 07:57:31,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2588 states. [2021-06-05 07:57:31,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2588 to 1643. [2021-06-05 07:57:31,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1643 states, 1642 states have (on average 2.805724725943971) internal successors, (4607), 1642 states have internal predecessors, (4607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:31,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1643 states to 1643 states and 4607 transitions. [2021-06-05 07:57:31,495 INFO L78 Accepts]: Start accepts. Automaton has 1643 states and 4607 transitions. Word has length 55 [2021-06-05 07:57:31,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:57:31,495 INFO L482 AbstractCegarLoop]: Abstraction has 1643 states and 4607 transitions. [2021-06-05 07:57:31,495 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:31,496 INFO L276 IsEmpty]: Start isEmpty. Operand 1643 states and 4607 transitions. [2021-06-05 07:57:31,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-06-05 07:57:31,498 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:57:31,498 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:57:31,721 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-06-05 07:57:31,721 INFO L430 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:57:31,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:57:31,721 INFO L82 PathProgramCache]: Analyzing trace with hash 1687206422, now seen corresponding path program 9 times [2021-06-05 07:57:31,722 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:57:31,722 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028795900] [2021-06-05 07:57:31,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:57:31,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:57:31,792 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:31,793 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:57:31,793 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028795900] [2021-06-05 07:57:31,793 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028795900] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:31,793 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1644662093] [2021-06-05 07:57:31,793 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:57:31,849 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 07:57:31,849 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:57:31,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 11 conjunts are in the unsatisfiable core [2021-06-05 07:57:31,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:57:31,932 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:31,932 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1644662093] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:31,932 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:57:31,932 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 12 [2021-06-05 07:57:31,933 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291148950] [2021-06-05 07:57:31,933 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 07:57:31,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:57:31,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 07:57:31,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-06-05 07:57:31,933 INFO L87 Difference]: Start difference. First operand 1643 states and 4607 transitions. Second operand has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:32,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:57:32,259 INFO L93 Difference]: Finished difference Result 2726 states and 7296 transitions. [2021-06-05 07:57:32,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-06-05 07:57:32,259 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-06-05 07:57:32,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:57:32,263 INFO L225 Difference]: With dead ends: 2726 [2021-06-05 07:57:32,263 INFO L226 Difference]: Without dead ends: 2151 [2021-06-05 07:57:32,264 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 251.0ms TimeCoverageRelationStatistics Valid=206, Invalid=606, Unknown=0, NotChecked=0, Total=812 [2021-06-05 07:57:32,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2151 states. [2021-06-05 07:57:32,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2151 to 1678. [2021-06-05 07:57:32,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1678 states, 1677 states have (on average 2.7924865831842576) internal successors, (4683), 1677 states have internal predecessors, (4683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:32,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1678 states to 1678 states and 4683 transitions. [2021-06-05 07:57:32,296 INFO L78 Accepts]: Start accepts. Automaton has 1678 states and 4683 transitions. Word has length 55 [2021-06-05 07:57:32,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:57:32,296 INFO L482 AbstractCegarLoop]: Abstraction has 1678 states and 4683 transitions. [2021-06-05 07:57:32,296 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:32,297 INFO L276 IsEmpty]: Start isEmpty. Operand 1678 states and 4683 transitions. [2021-06-05 07:57:32,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-06-05 07:57:32,299 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:57:32,299 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:57:32,522 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-06-05 07:57:32,522 INFO L430 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:57:32,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:57:32,522 INFO L82 PathProgramCache]: Analyzing trace with hash 1642632502, now seen corresponding path program 10 times [2021-06-05 07:57:32,523 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:57:32,523 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938585574] [2021-06-05 07:57:32,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:57:32,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:57:32,616 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:32,617 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:57:32,617 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938585574] [2021-06-05 07:57:32,617 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938585574] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:32,617 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [275057680] [2021-06-05 07:57:32,617 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:57:32,679 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 07:57:32,680 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:57:32,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 13 conjunts are in the unsatisfiable core [2021-06-05 07:57:32,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:57:32,800 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:32,800 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [275057680] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:32,800 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:57:32,800 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 14 [2021-06-05 07:57:32,800 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123184216] [2021-06-05 07:57:32,801 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 07:57:32,801 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:57:32,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 07:57:32,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2021-06-05 07:57:32,802 INFO L87 Difference]: Start difference. First operand 1678 states and 4683 transitions. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:32,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:57:32,987 INFO L93 Difference]: Finished difference Result 2468 states and 6583 transitions. [2021-06-05 07:57:32,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-06-05 07:57:32,987 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-06-05 07:57:32,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:57:32,991 INFO L225 Difference]: With dead ends: 2468 [2021-06-05 07:57:32,991 INFO L226 Difference]: Without dead ends: 2134 [2021-06-05 07:57:32,991 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 167.1ms TimeCoverageRelationStatistics Valid=165, Invalid=485, Unknown=0, NotChecked=0, Total=650 [2021-06-05 07:57:32,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2134 states. [2021-06-05 07:57:33,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2134 to 1763. [2021-06-05 07:57:33,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1763 states, 1762 states have (on average 2.754256526674234) internal successors, (4853), 1762 states have internal predecessors, (4853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:33,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1763 states to 1763 states and 4853 transitions. [2021-06-05 07:57:33,021 INFO L78 Accepts]: Start accepts. Automaton has 1763 states and 4853 transitions. Word has length 60 [2021-06-05 07:57:33,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:57:33,021 INFO L482 AbstractCegarLoop]: Abstraction has 1763 states and 4853 transitions. [2021-06-05 07:57:33,021 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:33,021 INFO L276 IsEmpty]: Start isEmpty. Operand 1763 states and 4853 transitions. [2021-06-05 07:57:33,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-06-05 07:57:33,024 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:57:33,024 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:57:33,247 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:57:33,247 INFO L430 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:57:33,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:57:33,248 INFO L82 PathProgramCache]: Analyzing trace with hash -1005400838, now seen corresponding path program 11 times [2021-06-05 07:57:33,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:57:33,248 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079776772] [2021-06-05 07:57:33,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:57:33,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:57:33,331 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:33,331 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:57:33,331 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079776772] [2021-06-05 07:57:33,331 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079776772] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:33,331 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1712854764] [2021-06-05 07:57:33,331 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:57:33,394 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-05 07:57:33,394 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:57:33,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 12 conjunts are in the unsatisfiable core [2021-06-05 07:57:33,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:57:33,481 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:33,482 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1712854764] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:33,482 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:57:33,482 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2021-06-05 07:57:33,482 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866313865] [2021-06-05 07:57:33,482 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 07:57:33,482 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:57:33,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 07:57:33,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-06-05 07:57:33,483 INFO L87 Difference]: Start difference. First operand 1763 states and 4853 transitions. Second operand has 11 states, 11 states have (on average 5.454545454545454) internal successors, (60), 11 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:33,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:57:33,613 INFO L93 Difference]: Finished difference Result 2561 states and 6577 transitions. [2021-06-05 07:57:33,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-05 07:57:33,614 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.454545454545454) internal successors, (60), 11 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-06-05 07:57:33,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:57:33,618 INFO L225 Difference]: With dead ends: 2561 [2021-06-05 07:57:33,618 INFO L226 Difference]: Without dead ends: 2291 [2021-06-05 07:57:33,619 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 120.6ms TimeCoverageRelationStatistics Valid=98, Invalid=282, Unknown=0, NotChecked=0, Total=380 [2021-06-05 07:57:33,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2291 states. [2021-06-05 07:57:33,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2291 to 1778. [2021-06-05 07:57:33,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1778 states, 1777 states have (on average 2.7478897017445134) internal successors, (4883), 1777 states have internal predecessors, (4883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:33,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1778 states to 1778 states and 4883 transitions. [2021-06-05 07:57:33,651 INFO L78 Accepts]: Start accepts. Automaton has 1778 states and 4883 transitions. Word has length 60 [2021-06-05 07:57:33,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:57:33,651 INFO L482 AbstractCegarLoop]: Abstraction has 1778 states and 4883 transitions. [2021-06-05 07:57:33,651 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 5.454545454545454) internal successors, (60), 11 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:33,652 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states and 4883 transitions. [2021-06-05 07:57:33,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-06-05 07:57:33,655 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:57:33,655 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:57:33,868 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:57:33,869 INFO L430 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:57:33,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:57:33,869 INFO L82 PathProgramCache]: Analyzing trace with hash 1024918474, now seen corresponding path program 12 times [2021-06-05 07:57:33,869 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:57:33,869 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495104736] [2021-06-05 07:57:33,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:57:33,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:57:33,961 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:33,961 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:57:33,961 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495104736] [2021-06-05 07:57:33,962 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495104736] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:33,962 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1948262281] [2021-06-05 07:57:33,962 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:57:34,023 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-05 07:57:34,023 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:57:34,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 12 conjunts are in the unsatisfiable core [2021-06-05 07:57:34,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:57:34,142 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:34,142 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1948262281] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:34,142 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:57:34,142 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2021-06-05 07:57:34,142 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586200794] [2021-06-05 07:57:34,144 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 07:57:34,144 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:57:34,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 07:57:34,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-06-05 07:57:34,145 INFO L87 Difference]: Start difference. First operand 1778 states and 4883 transitions. Second operand has 12 states, 12 states have (on average 5.166666666666667) internal successors, (62), 12 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:34,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:57:34,320 INFO L93 Difference]: Finished difference Result 2446 states and 6347 transitions. [2021-06-05 07:57:34,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-06-05 07:57:34,321 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.166666666666667) internal successors, (62), 12 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-06-05 07:57:34,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:57:34,325 INFO L225 Difference]: With dead ends: 2446 [2021-06-05 07:57:34,325 INFO L226 Difference]: Without dead ends: 2176 [2021-06-05 07:57:34,326 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 162.1ms TimeCoverageRelationStatistics Valid=137, Invalid=415, Unknown=0, NotChecked=0, Total=552 [2021-06-05 07:57:34,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2176 states. [2021-06-05 07:57:34,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2176 to 1778. [2021-06-05 07:57:34,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1778 states, 1777 states have (on average 2.7478897017445134) internal successors, (4883), 1777 states have internal predecessors, (4883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:34,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1778 states to 1778 states and 4883 transitions. [2021-06-05 07:57:34,355 INFO L78 Accepts]: Start accepts. Automaton has 1778 states and 4883 transitions. Word has length 60 [2021-06-05 07:57:34,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:57:34,355 INFO L482 AbstractCegarLoop]: Abstraction has 1778 states and 4883 transitions. [2021-06-05 07:57:34,355 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 5.166666666666667) internal successors, (62), 12 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:34,355 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states and 4883 transitions. [2021-06-05 07:57:34,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-06-05 07:57:34,358 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:57:34,358 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:57:34,580 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-06-05 07:57:34,581 INFO L430 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:57:34,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:57:34,581 INFO L82 PathProgramCache]: Analyzing trace with hash 1639157944, now seen corresponding path program 13 times [2021-06-05 07:57:34,581 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:57:34,581 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983846169] [2021-06-05 07:57:34,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:57:34,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:57:34,660 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:34,660 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:57:34,660 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983846169] [2021-06-05 07:57:34,660 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983846169] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:34,660 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1826769740] [2021-06-05 07:57:34,661 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:57:34,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:57:34,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 12 conjunts are in the unsatisfiable core [2021-06-05 07:57:34,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:57:34,798 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:34,798 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1826769740] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:34,798 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:57:34,798 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2021-06-05 07:57:34,798 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729498566] [2021-06-05 07:57:34,798 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 07:57:34,799 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:57:34,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 07:57:34,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-06-05 07:57:34,799 INFO L87 Difference]: Start difference. First operand 1778 states and 4883 transitions. Second operand has 11 states, 11 states have (on average 5.454545454545454) internal successors, (60), 11 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:34,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:57:34,936 INFO L93 Difference]: Finished difference Result 2421 states and 6297 transitions. [2021-06-05 07:57:34,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-05 07:57:34,936 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.454545454545454) internal successors, (60), 11 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-06-05 07:57:34,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:57:34,940 INFO L225 Difference]: With dead ends: 2421 [2021-06-05 07:57:34,940 INFO L226 Difference]: Without dead ends: 2151 [2021-06-05 07:57:34,940 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 117.3ms TimeCoverageRelationStatistics Valid=117, Invalid=345, Unknown=0, NotChecked=0, Total=462 [2021-06-05 07:57:34,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2151 states. [2021-06-05 07:57:34,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2151 to 1778. [2021-06-05 07:57:34,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1778 states, 1777 states have (on average 2.7478897017445134) internal successors, (4883), 1777 states have internal predecessors, (4883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:34,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1778 states to 1778 states and 4883 transitions. [2021-06-05 07:57:34,969 INFO L78 Accepts]: Start accepts. Automaton has 1778 states and 4883 transitions. Word has length 60 [2021-06-05 07:57:34,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:57:34,970 INFO L482 AbstractCegarLoop]: Abstraction has 1778 states and 4883 transitions. [2021-06-05 07:57:34,970 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 5.454545454545454) internal successors, (60), 11 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:34,970 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states and 4883 transitions. [2021-06-05 07:57:34,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-06-05 07:57:34,972 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:57:34,972 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:57:35,188 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:57:35,189 INFO L430 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:57:35,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:57:35,189 INFO L82 PathProgramCache]: Analyzing trace with hash -76084344, now seen corresponding path program 14 times [2021-06-05 07:57:35,189 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:57:35,189 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792762382] [2021-06-05 07:57:35,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:57:35,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:57:35,272 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:35,272 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:57:35,272 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792762382] [2021-06-05 07:57:35,272 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792762382] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:35,273 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [964260829] [2021-06-05 07:57:35,273 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:57:35,338 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 07:57:35,338 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:57:35,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 12 conjunts are in the unsatisfiable core [2021-06-05 07:57:35,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:57:35,432 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:35,432 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [964260829] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:35,432 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:57:35,432 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2021-06-05 07:57:35,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558479959] [2021-06-05 07:57:35,433 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 07:57:35,433 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:57:35,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 07:57:35,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-06-05 07:57:35,433 INFO L87 Difference]: Start difference. First operand 1778 states and 4883 transitions. Second operand has 12 states, 12 states have (on average 5.166666666666667) internal successors, (62), 12 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:35,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:57:35,712 INFO L93 Difference]: Finished difference Result 2431 states and 6347 transitions. [2021-06-05 07:57:35,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-05 07:57:35,712 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.166666666666667) internal successors, (62), 12 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-06-05 07:57:35,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:57:35,714 INFO L225 Difference]: With dead ends: 2431 [2021-06-05 07:57:35,715 INFO L226 Difference]: Without dead ends: 2161 [2021-06-05 07:57:35,715 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 239.1ms TimeCoverageRelationStatistics Valid=164, Invalid=486, Unknown=0, NotChecked=0, Total=650 [2021-06-05 07:57:35,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2161 states. [2021-06-05 07:57:35,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2161 to 1778. [2021-06-05 07:57:35,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1778 states, 1777 states have (on average 2.7507034327518287) internal successors, (4888), 1777 states have internal predecessors, (4888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:35,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1778 states to 1778 states and 4888 transitions. [2021-06-05 07:57:35,740 INFO L78 Accepts]: Start accepts. Automaton has 1778 states and 4888 transitions. Word has length 60 [2021-06-05 07:57:35,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:57:35,740 INFO L482 AbstractCegarLoop]: Abstraction has 1778 states and 4888 transitions. [2021-06-05 07:57:35,740 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 5.166666666666667) internal successors, (62), 12 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:35,740 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states and 4888 transitions. [2021-06-05 07:57:35,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-06-05 07:57:35,742 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:57:35,743 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:57:35,955 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-06-05 07:57:35,956 INFO L430 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:57:35,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:57:35,956 INFO L82 PathProgramCache]: Analyzing trace with hash -1108731946, now seen corresponding path program 15 times [2021-06-05 07:57:35,956 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:57:35,957 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421463282] [2021-06-05 07:57:35,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:57:35,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:57:36,021 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:36,021 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:57:36,021 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421463282] [2021-06-05 07:57:36,021 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421463282] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:36,021 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [954029179] [2021-06-05 07:57:36,021 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:57:36,087 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-05 07:57:36,087 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:57:36,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 12 conjunts are in the unsatisfiable core [2021-06-05 07:57:36,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:57:36,167 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:36,167 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [954029179] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:36,167 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:57:36,168 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2021-06-05 07:57:36,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850616701] [2021-06-05 07:57:36,168 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 07:57:36,168 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:57:36,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 07:57:36,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-06-05 07:57:36,169 INFO L87 Difference]: Start difference. First operand 1778 states and 4888 transitions. Second operand has 11 states, 11 states have (on average 5.454545454545454) internal successors, (60), 11 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:36,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:57:36,378 INFO L93 Difference]: Finished difference Result 3198 states and 8521 transitions. [2021-06-05 07:57:36,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-05 07:57:36,378 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.454545454545454) internal successors, (60), 11 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-06-05 07:57:36,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:57:36,382 INFO L225 Difference]: With dead ends: 3198 [2021-06-05 07:57:36,382 INFO L226 Difference]: Without dead ends: 2928 [2021-06-05 07:57:36,382 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 163.0ms TimeCoverageRelationStatistics Valid=153, Invalid=399, Unknown=0, NotChecked=0, Total=552 [2021-06-05 07:57:36,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2928 states. [2021-06-05 07:57:36,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2928 to 1958. [2021-06-05 07:57:36,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1958 states, 1957 states have (on average 2.783341849770056) internal successors, (5447), 1957 states have internal predecessors, (5447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:36,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1958 states to 1958 states and 5447 transitions. [2021-06-05 07:57:36,422 INFO L78 Accepts]: Start accepts. Automaton has 1958 states and 5447 transitions. Word has length 60 [2021-06-05 07:57:36,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:57:36,422 INFO L482 AbstractCegarLoop]: Abstraction has 1958 states and 5447 transitions. [2021-06-05 07:57:36,422 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 5.454545454545454) internal successors, (60), 11 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:36,422 INFO L276 IsEmpty]: Start isEmpty. Operand 1958 states and 5447 transitions. [2021-06-05 07:57:36,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-06-05 07:57:36,426 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:57:36,426 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:57:36,650 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-06-05 07:57:36,650 INFO L430 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:57:36,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:57:36,650 INFO L82 PathProgramCache]: Analyzing trace with hash -1086388696, now seen corresponding path program 16 times [2021-06-05 07:57:36,650 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:57:36,650 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756324084] [2021-06-05 07:57:36,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:57:36,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:57:36,717 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:36,718 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:57:36,718 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756324084] [2021-06-05 07:57:36,718 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756324084] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:36,718 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [243592710] [2021-06-05 07:57:36,718 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:57:36,783 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 07:57:36,784 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:57:36,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 12 conjunts are in the unsatisfiable core [2021-06-05 07:57:36,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:57:36,873 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:36,873 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [243592710] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:36,874 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:57:36,874 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2021-06-05 07:57:36,874 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187396720] [2021-06-05 07:57:36,874 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 07:57:36,874 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:57:36,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 07:57:36,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2021-06-05 07:57:36,875 INFO L87 Difference]: Start difference. First operand 1958 states and 5447 transitions. Second operand has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:37,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:57:37,204 INFO L93 Difference]: Finished difference Result 3021 states and 8021 transitions. [2021-06-05 07:57:37,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-05 07:57:37,205 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-06-05 07:57:37,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:57:37,208 INFO L225 Difference]: With dead ends: 3021 [2021-06-05 07:57:37,208 INFO L226 Difference]: Without dead ends: 2446 [2021-06-05 07:57:37,209 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 279.8ms TimeCoverageRelationStatistics Valid=252, Invalid=740, Unknown=0, NotChecked=0, Total=992 [2021-06-05 07:57:37,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2446 states. [2021-06-05 07:57:37,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2446 to 1603. [2021-06-05 07:57:37,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1603 states, 1602 states have (on average 2.7265917602996255) internal successors, (4368), 1602 states have internal predecessors, (4368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:37,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1603 states to 1603 states and 4368 transitions. [2021-06-05 07:57:37,239 INFO L78 Accepts]: Start accepts. Automaton has 1603 states and 4368 transitions. Word has length 60 [2021-06-05 07:57:37,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:57:37,239 INFO L482 AbstractCegarLoop]: Abstraction has 1603 states and 4368 transitions. [2021-06-05 07:57:37,239 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:37,240 INFO L276 IsEmpty]: Start isEmpty. Operand 1603 states and 4368 transitions. [2021-06-05 07:57:37,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-06-05 07:57:37,243 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:57:37,243 INFO L521 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:57:37,466 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-06-05 07:57:37,466 INFO L430 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:57:37,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:57:37,466 INFO L82 PathProgramCache]: Analyzing trace with hash -423019465, now seen corresponding path program 17 times [2021-06-05 07:57:37,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:57:37,467 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168378353] [2021-06-05 07:57:37,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:57:37,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:57:37,592 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:37,593 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:57:37,593 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168378353] [2021-06-05 07:57:37,593 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168378353] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:37,593 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [546870745] [2021-06-05 07:57:37,593 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:57:37,667 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-05 07:57:37,668 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:57:37,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 13 conjunts are in the unsatisfiable core [2021-06-05 07:57:37,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:57:37,777 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:37,777 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [546870745] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:37,777 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:57:37,777 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2021-06-05 07:57:37,777 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478993173] [2021-06-05 07:57:37,779 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 07:57:37,779 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:57:37,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 07:57:37,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-06-05 07:57:37,780 INFO L87 Difference]: Start difference. First operand 1603 states and 4368 transitions. Second operand has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 13 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:37,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:57:37,991 INFO L93 Difference]: Finished difference Result 2321 states and 6007 transitions. [2021-06-05 07:57:37,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-06-05 07:57:37,992 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 13 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-06-05 07:57:37,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:57:37,994 INFO L225 Difference]: With dead ends: 2321 [2021-06-05 07:57:37,994 INFO L226 Difference]: Without dead ends: 2051 [2021-06-05 07:57:37,994 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 182.9ms TimeCoverageRelationStatistics Valid=148, Invalid=452, Unknown=0, NotChecked=0, Total=600 [2021-06-05 07:57:38,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2051 states. [2021-06-05 07:57:38,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2051 to 1678. [2021-06-05 07:57:38,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1678 states, 1677 states have (on average 2.738819320214669) internal successors, (4593), 1677 states have internal predecessors, (4593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:38,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1678 states to 1678 states and 4593 transitions. [2021-06-05 07:57:38,023 INFO L78 Accepts]: Start accepts. Automaton has 1678 states and 4593 transitions. Word has length 65 [2021-06-05 07:57:38,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:57:38,024 INFO L482 AbstractCegarLoop]: Abstraction has 1678 states and 4593 transitions. [2021-06-05 07:57:38,024 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 13 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:38,024 INFO L276 IsEmpty]: Start isEmpty. Operand 1678 states and 4593 transitions. [2021-06-05 07:57:38,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-06-05 07:57:38,025 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:57:38,026 INFO L521 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:57:38,226 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-06-05 07:57:38,226 INFO L430 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:57:38,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:57:38,226 INFO L82 PathProgramCache]: Analyzing trace with hash 1607299847, now seen corresponding path program 18 times [2021-06-05 07:57:38,227 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:57:38,227 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345912886] [2021-06-05 07:57:38,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:57:38,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:57:38,320 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:38,321 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:57:38,321 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345912886] [2021-06-05 07:57:38,321 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345912886] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:38,321 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [82683822] [2021-06-05 07:57:38,321 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:57:38,390 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-05 07:57:38,390 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:57:38,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 13 conjunts are in the unsatisfiable core [2021-06-05 07:57:38,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:57:38,498 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:38,498 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [82683822] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:38,499 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:57:38,499 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 14 [2021-06-05 07:57:38,499 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083643357] [2021-06-05 07:57:38,499 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 07:57:38,499 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:57:38,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 07:57:38,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-06-05 07:57:38,500 INFO L87 Difference]: Start difference. First operand 1678 states and 4593 transitions. Second operand has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 14 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:38,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:57:38,734 INFO L93 Difference]: Finished difference Result 2491 states and 6422 transitions. [2021-06-05 07:57:38,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-05 07:57:38,734 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 14 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-06-05 07:57:38,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:57:38,737 INFO L225 Difference]: With dead ends: 2491 [2021-06-05 07:57:38,737 INFO L226 Difference]: Without dead ends: 2221 [2021-06-05 07:57:38,738 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 203.9ms TimeCoverageRelationStatistics Valid=185, Invalid=571, Unknown=0, NotChecked=0, Total=756 [2021-06-05 07:57:38,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2221 states. [2021-06-05 07:57:38,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2221 to 1753. [2021-06-05 07:57:38,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1753 states, 1752 states have (on average 2.75) internal successors, (4818), 1752 states have internal predecessors, (4818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:38,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1753 states to 1753 states and 4818 transitions. [2021-06-05 07:57:38,765 INFO L78 Accepts]: Start accepts. Automaton has 1753 states and 4818 transitions. Word has length 65 [2021-06-05 07:57:38,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:57:38,765 INFO L482 AbstractCegarLoop]: Abstraction has 1753 states and 4818 transitions. [2021-06-05 07:57:38,765 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 14 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:38,765 INFO L276 IsEmpty]: Start isEmpty. Operand 1753 states and 4818 transitions. [2021-06-05 07:57:38,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-06-05 07:57:38,767 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:57:38,767 INFO L521 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:57:38,968 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-06-05 07:57:38,968 INFO L430 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:57:38,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:57:38,969 INFO L82 PathProgramCache]: Analyzing trace with hash -2073427979, now seen corresponding path program 19 times [2021-06-05 07:57:38,969 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:57:38,969 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376617744] [2021-06-05 07:57:38,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:57:38,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:57:39,048 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:39,048 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:57:39,048 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376617744] [2021-06-05 07:57:39,048 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376617744] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:39,048 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [260986072] [2021-06-05 07:57:39,049 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:57:39,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:57:39,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 13 conjunts are in the unsatisfiable core [2021-06-05 07:57:39,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:57:39,199 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:39,200 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [260986072] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:39,200 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:57:39,200 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2021-06-05 07:57:39,200 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358868520] [2021-06-05 07:57:39,200 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 07:57:39,201 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:57:39,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 07:57:39,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2021-06-05 07:57:39,201 INFO L87 Difference]: Start difference. First operand 1753 states and 4818 transitions. Second operand has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 13 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:39,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:57:39,417 INFO L93 Difference]: Finished difference Result 2566 states and 6677 transitions. [2021-06-05 07:57:39,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-06-05 07:57:39,417 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 13 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-06-05 07:57:39,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:57:39,419 INFO L225 Difference]: With dead ends: 2566 [2021-06-05 07:57:39,419 INFO L226 Difference]: Without dead ends: 2296 [2021-06-05 07:57:39,419 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 174.1ms TimeCoverageRelationStatistics Valid=195, Invalid=561, Unknown=0, NotChecked=0, Total=756 [2021-06-05 07:57:39,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2296 states. [2021-06-05 07:57:39,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2296 to 1828. [2021-06-05 07:57:39,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1828 states, 1827 states have (on average 2.768472906403941) internal successors, (5058), 1827 states have internal predecessors, (5058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:39,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1828 states to 1828 states and 5058 transitions. [2021-06-05 07:57:39,449 INFO L78 Accepts]: Start accepts. Automaton has 1828 states and 5058 transitions. Word has length 65 [2021-06-05 07:57:39,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:57:39,449 INFO L482 AbstractCegarLoop]: Abstraction has 1828 states and 5058 transitions. [2021-06-05 07:57:39,449 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 13 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:39,449 INFO L276 IsEmpty]: Start isEmpty. Operand 1828 states and 5058 transitions. [2021-06-05 07:57:39,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-06-05 07:57:39,451 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:57:39,452 INFO L521 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:57:39,664 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:57:39,665 INFO L430 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:57:39,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:57:39,665 INFO L82 PathProgramCache]: Analyzing trace with hash 506297029, now seen corresponding path program 20 times [2021-06-05 07:57:39,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:57:39,665 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030361560] [2021-06-05 07:57:39,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:57:39,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:57:39,740 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:39,740 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:57:39,740 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030361560] [2021-06-05 07:57:39,740 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030361560] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:39,740 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1372043012] [2021-06-05 07:57:39,741 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:57:39,809 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 07:57:39,809 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:57:39,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 13 conjunts are in the unsatisfiable core [2021-06-05 07:57:39,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:57:39,912 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:39,913 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1372043012] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:39,913 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:57:39,913 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 14 [2021-06-05 07:57:39,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756187973] [2021-06-05 07:57:39,913 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 07:57:39,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:57:39,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 07:57:39,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-06-05 07:57:39,914 INFO L87 Difference]: Start difference. First operand 1828 states and 5058 transitions. Second operand has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 14 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:40,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:57:40,230 INFO L93 Difference]: Finished difference Result 3144 states and 8303 transitions. [2021-06-05 07:57:40,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-05 07:57:40,230 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 14 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-06-05 07:57:40,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:57:40,234 INFO L225 Difference]: With dead ends: 3144 [2021-06-05 07:57:40,234 INFO L226 Difference]: Without dead ends: 2521 [2021-06-05 07:57:40,235 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 263.0ms TimeCoverageRelationStatistics Valid=241, Invalid=751, Unknown=0, NotChecked=0, Total=992 [2021-06-05 07:57:40,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2521 states. [2021-06-05 07:57:40,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2521 to 1903. [2021-06-05 07:57:40,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1903 states, 1902 states have (on average 2.780231335436383) internal successors, (5288), 1902 states have internal predecessors, (5288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:40,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1903 states to 1903 states and 5288 transitions. [2021-06-05 07:57:40,261 INFO L78 Accepts]: Start accepts. Automaton has 1903 states and 5288 transitions. Word has length 65 [2021-06-05 07:57:40,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:57:40,261 INFO L482 AbstractCegarLoop]: Abstraction has 1903 states and 5288 transitions. [2021-06-05 07:57:40,261 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 14 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:40,261 INFO L276 IsEmpty]: Start isEmpty. Operand 1903 states and 5288 transitions. [2021-06-05 07:57:40,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-06-05 07:57:40,263 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:57:40,263 INFO L521 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:57:40,480 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-06-05 07:57:40,481 INFO L430 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:57:40,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:57:40,481 INFO L82 PathProgramCache]: Analyzing trace with hash -526350573, now seen corresponding path program 21 times [2021-06-05 07:57:40,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:57:40,481 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706799844] [2021-06-05 07:57:40,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:57:40,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:57:40,549 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:40,549 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:57:40,549 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706799844] [2021-06-05 07:57:40,549 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706799844] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:40,549 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [629181421] [2021-06-05 07:57:40,549 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:57:40,597 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-05 07:57:40,597 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:57:40,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 13 conjunts are in the unsatisfiable core [2021-06-05 07:57:40,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:57:40,693 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:40,693 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [629181421] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:40,693 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:57:40,693 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2021-06-05 07:57:40,694 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891524883] [2021-06-05 07:57:40,694 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 07:57:40,694 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:57:40,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 07:57:40,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-06-05 07:57:40,695 INFO L87 Difference]: Start difference. First operand 1903 states and 5288 transitions. Second operand has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 13 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:40,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:57:40,920 INFO L93 Difference]: Finished difference Result 3348 states and 8971 transitions. [2021-06-05 07:57:40,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-06-05 07:57:40,920 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 13 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-06-05 07:57:40,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:57:40,924 INFO L225 Difference]: With dead ends: 3348 [2021-06-05 07:57:40,924 INFO L226 Difference]: Without dead ends: 3078 [2021-06-05 07:57:40,925 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 187.1ms TimeCoverageRelationStatistics Valid=243, Invalid=627, Unknown=0, NotChecked=0, Total=870 [2021-06-05 07:57:40,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3078 states. [2021-06-05 07:57:40,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3078 to 2083. [2021-06-05 07:57:40,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2083 states, 2082 states have (on average 2.80835734870317) internal successors, (5847), 2082 states have internal predecessors, (5847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:40,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2083 states to 2083 states and 5847 transitions. [2021-06-05 07:57:40,959 INFO L78 Accepts]: Start accepts. Automaton has 2083 states and 5847 transitions. Word has length 65 [2021-06-05 07:57:40,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:57:40,959 INFO L482 AbstractCegarLoop]: Abstraction has 2083 states and 5847 transitions. [2021-06-05 07:57:40,959 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 13 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:40,959 INFO L276 IsEmpty]: Start isEmpty. Operand 2083 states and 5847 transitions. [2021-06-05 07:57:40,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-06-05 07:57:40,961 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:57:40,962 INFO L521 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:57:41,168 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:57:41,169 INFO L430 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:57:41,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:57:41,169 INFO L82 PathProgramCache]: Analyzing trace with hash -504007323, now seen corresponding path program 22 times [2021-06-05 07:57:41,169 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:57:41,169 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894969094] [2021-06-05 07:57:41,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:57:41,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:57:41,234 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:41,235 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:57:41,235 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894969094] [2021-06-05 07:57:41,235 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894969094] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:41,235 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1558941226] [2021-06-05 07:57:41,235 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 07:57:41,282 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 07:57:41,282 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:57:41,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 13 conjunts are in the unsatisfiable core [2021-06-05 07:57:41,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:57:41,410 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:41,410 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1558941226] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:41,410 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:57:41,410 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 14 [2021-06-05 07:57:41,411 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304171236] [2021-06-05 07:57:41,411 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 07:57:41,411 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:57:41,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 07:57:41,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-06-05 07:57:41,412 INFO L87 Difference]: Start difference. First operand 2083 states and 5847 transitions. Second operand has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 14 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:41,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:57:41,772 INFO L93 Difference]: Finished difference Result 3216 states and 8636 transitions. [2021-06-05 07:57:41,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-05 07:57:41,773 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 14 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-06-05 07:57:41,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:57:41,776 INFO L225 Difference]: With dead ends: 3216 [2021-06-05 07:57:41,776 INFO L226 Difference]: Without dead ends: 2641 [2021-06-05 07:57:41,776 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 292.4ms TimeCoverageRelationStatistics Valid=300, Invalid=890, Unknown=0, NotChecked=0, Total=1190 [2021-06-05 07:57:41,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2641 states. [2021-06-05 07:57:41,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2641 to 1524. [2021-06-05 07:57:41,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1524 states, 1523 states have (on average 2.7288246881155613) internal successors, (4156), 1523 states have internal predecessors, (4156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:41,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1524 states to 1524 states and 4156 transitions. [2021-06-05 07:57:41,803 INFO L78 Accepts]: Start accepts. Automaton has 1524 states and 4156 transitions. Word has length 65 [2021-06-05 07:57:41,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:57:41,803 INFO L482 AbstractCegarLoop]: Abstraction has 1524 states and 4156 transitions. [2021-06-05 07:57:41,804 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 14 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:41,804 INFO L276 IsEmpty]: Start isEmpty. Operand 1524 states and 4156 transitions. [2021-06-05 07:57:41,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-06-05 07:57:41,805 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:57:41,805 INFO L521 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:57:42,026 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2021-06-05 07:57:42,027 INFO L430 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:57:42,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:57:42,027 INFO L82 PathProgramCache]: Analyzing trace with hash 2053970119, now seen corresponding path program 23 times [2021-06-05 07:57:42,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:57:42,027 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362935009] [2021-06-05 07:57:42,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:57:42,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:57:42,134 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:42,134 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:57:42,134 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362935009] [2021-06-05 07:57:42,134 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362935009] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:42,135 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1586888088] [2021-06-05 07:57:42,135 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:57:42,197 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-06-05 07:57:42,197 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:57:42,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 15 conjunts are in the unsatisfiable core [2021-06-05 07:57:42,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:57:42,328 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:42,328 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1586888088] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:42,328 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:57:42,328 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 17 [2021-06-05 07:57:42,328 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698330149] [2021-06-05 07:57:42,328 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:57:42,329 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:57:42,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:57:42,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:57:42,329 INFO L87 Difference]: Start difference. First operand 1524 states and 4156 transitions. Second operand has 17 states, 17 states have (on average 5.882352941176471) internal successors, (100), 17 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:42,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:57:42,522 INFO L93 Difference]: Finished difference Result 2364 states and 6156 transitions. [2021-06-05 07:57:42,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-05 07:57:42,522 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.882352941176471) internal successors, (100), 17 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-06-05 07:57:42,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:57:42,524 INFO L225 Difference]: With dead ends: 2364 [2021-06-05 07:57:42,524 INFO L226 Difference]: Without dead ends: 2030 [2021-06-05 07:57:42,525 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 211.4ms TimeCoverageRelationStatistics Valid=240, Invalid=690, Unknown=0, NotChecked=0, Total=930 [2021-06-05 07:57:42,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2030 states. [2021-06-05 07:57:42,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2030 to 1609. [2021-06-05 07:57:42,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1609 states, 1608 states have (on average 2.6902985074626864) internal successors, (4326), 1608 states have internal predecessors, (4326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:42,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1609 states to 1609 states and 4326 transitions. [2021-06-05 07:57:42,547 INFO L78 Accepts]: Start accepts. Automaton has 1609 states and 4326 transitions. Word has length 70 [2021-06-05 07:57:42,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:57:42,547 INFO L482 AbstractCegarLoop]: Abstraction has 1609 states and 4326 transitions. [2021-06-05 07:57:42,547 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 5.882352941176471) internal successors, (100), 17 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:42,548 INFO L276 IsEmpty]: Start isEmpty. Operand 1609 states and 4326 transitions. [2021-06-05 07:57:42,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-06-05 07:57:42,549 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:57:42,549 INFO L521 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:57:42,764 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:57:42,765 INFO L430 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:57:42,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:57:42,765 INFO L82 PathProgramCache]: Analyzing trace with hash -778605685, now seen corresponding path program 24 times [2021-06-05 07:57:42,765 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:57:42,765 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83170305] [2021-06-05 07:57:42,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:57:42,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:57:42,850 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:42,850 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:57:42,850 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83170305] [2021-06-05 07:57:42,851 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83170305] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:42,851 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [300579974] [2021-06-05 07:57:42,851 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:57:42,919 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-06-05 07:57:42,919 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:57:42,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 14 conjunts are in the unsatisfiable core [2021-06-05 07:57:42,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:57:43,016 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:43,016 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [300579974] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:43,016 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:57:43,016 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2021-06-05 07:57:43,016 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223361974] [2021-06-05 07:57:43,016 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 07:57:43,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:57:43,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 07:57:43,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2021-06-05 07:57:43,017 INFO L87 Difference]: Start difference. First operand 1609 states and 4326 transitions. Second operand has 14 states, 14 states have (on average 5.142857142857143) internal successors, (72), 14 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:43,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:57:43,215 INFO L93 Difference]: Finished difference Result 2686 states and 6737 transitions. [2021-06-05 07:57:43,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-05 07:57:43,215 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.142857142857143) internal successors, (72), 14 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-06-05 07:57:43,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:57:43,218 INFO L225 Difference]: With dead ends: 2686 [2021-06-05 07:57:43,218 INFO L226 Difference]: Without dead ends: 2416 [2021-06-05 07:57:43,219 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 186.0ms TimeCoverageRelationStatistics Valid=158, Invalid=442, Unknown=0, NotChecked=0, Total=600 [2021-06-05 07:57:43,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2416 states. [2021-06-05 07:57:43,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2416 to 1753. [2021-06-05 07:57:43,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1753 states, 1752 states have (on average 2.7071917808219177) internal successors, (4743), 1752 states have internal predecessors, (4743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:43,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1753 states to 1753 states and 4743 transitions. [2021-06-05 07:57:43,245 INFO L78 Accepts]: Start accepts. Automaton has 1753 states and 4743 transitions. Word has length 70 [2021-06-05 07:57:43,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:57:43,245 INFO L482 AbstractCegarLoop]: Abstraction has 1753 states and 4743 transitions. [2021-06-05 07:57:43,246 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 5.142857142857143) internal successors, (72), 14 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:43,246 INFO L276 IsEmpty]: Start isEmpty. Operand 1753 states and 4743 transitions. [2021-06-05 07:57:43,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-06-05 07:57:43,248 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:57:43,248 INFO L521 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:57:43,452 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2021-06-05 07:57:43,453 INFO L430 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:57:43,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:57:43,453 INFO L82 PathProgramCache]: Analyzing trace with hash 220290651, now seen corresponding path program 25 times [2021-06-05 07:57:43,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:57:43,453 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049223013] [2021-06-05 07:57:43,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:57:43,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:57:43,552 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:43,552 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:57:43,552 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049223013] [2021-06-05 07:57:43,553 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049223013] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:43,553 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1729701336] [2021-06-05 07:57:43,553 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:57:43,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:57:43,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 14 conjunts are in the unsatisfiable core [2021-06-05 07:57:43,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:57:43,723 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:43,724 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1729701336] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:43,724 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:57:43,724 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2021-06-05 07:57:43,724 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626907378] [2021-06-05 07:57:43,724 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 07:57:43,725 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:57:43,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 07:57:43,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2021-06-05 07:57:43,725 INFO L87 Difference]: Start difference. First operand 1753 states and 4743 transitions. Second operand has 15 states, 15 states have (on average 4.933333333333334) internal successors, (74), 15 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:43,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:57:43,922 INFO L93 Difference]: Finished difference Result 2646 states and 6732 transitions. [2021-06-05 07:57:43,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-05 07:57:43,922 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.933333333333334) internal successors, (74), 15 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-06-05 07:57:43,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:57:43,924 INFO L225 Difference]: With dead ends: 2646 [2021-06-05 07:57:43,925 INFO L226 Difference]: Without dead ends: 2376 [2021-06-05 07:57:43,925 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 214.8ms TimeCoverageRelationStatistics Valid=203, Invalid=609, Unknown=0, NotChecked=0, Total=812 [2021-06-05 07:57:43,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2376 states. [2021-06-05 07:57:43,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2376 to 1828. [2021-06-05 07:57:43,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1828 states, 1827 states have (on average 2.7192118226600983) internal successors, (4968), 1827 states have internal predecessors, (4968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:43,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1828 states to 1828 states and 4968 transitions. [2021-06-05 07:57:43,950 INFO L78 Accepts]: Start accepts. Automaton has 1828 states and 4968 transitions. Word has length 70 [2021-06-05 07:57:43,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:57:43,950 INFO L482 AbstractCegarLoop]: Abstraction has 1828 states and 4968 transitions. [2021-06-05 07:57:43,950 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 4.933333333333334) internal successors, (74), 15 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:43,950 INFO L276 IsEmpty]: Start isEmpty. Operand 1828 states and 4968 transitions. [2021-06-05 07:57:43,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-06-05 07:57:43,952 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:57:43,952 INFO L521 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:57:44,156 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:57:44,157 INFO L430 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:57:44,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:57:44,157 INFO L82 PathProgramCache]: Analyzing trace with hash -1659037239, now seen corresponding path program 26 times [2021-06-05 07:57:44,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:57:44,158 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811007039] [2021-06-05 07:57:44,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:57:44,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:57:44,250 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:44,251 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:57:44,251 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811007039] [2021-06-05 07:57:44,251 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811007039] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:44,251 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1794990190] [2021-06-05 07:57:44,251 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:57:44,311 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 07:57:44,311 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:57:44,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 14 conjunts are in the unsatisfiable core [2021-06-05 07:57:44,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:57:44,413 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:44,414 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1794990190] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:44,414 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:57:44,414 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2021-06-05 07:57:44,414 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321545539] [2021-06-05 07:57:44,415 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 07:57:44,415 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:57:44,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 07:57:44,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-06-05 07:57:44,416 INFO L87 Difference]: Start difference. First operand 1828 states and 4968 transitions. Second operand has 14 states, 14 states have (on average 5.142857142857143) internal successors, (72), 14 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:44,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:57:44,588 INFO L93 Difference]: Finished difference Result 2696 states and 6907 transitions. [2021-06-05 07:57:44,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-05 07:57:44,589 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.142857142857143) internal successors, (72), 14 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-06-05 07:57:44,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:57:44,591 INFO L225 Difference]: With dead ends: 2696 [2021-06-05 07:57:44,591 INFO L226 Difference]: Without dead ends: 2426 [2021-06-05 07:57:44,591 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 169.0ms TimeCoverageRelationStatistics Valid=174, Invalid=528, Unknown=0, NotChecked=0, Total=702 [2021-06-05 07:57:44,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2426 states. [2021-06-05 07:57:44,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2426 to 1903. [2021-06-05 07:57:44,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1903 states, 1902 states have (on average 2.730283911671924) internal successors, (5193), 1902 states have internal predecessors, (5193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:44,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1903 states to 1903 states and 5193 transitions. [2021-06-05 07:57:44,611 INFO L78 Accepts]: Start accepts. Automaton has 1903 states and 5193 transitions. Word has length 70 [2021-06-05 07:57:44,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:57:44,611 INFO L482 AbstractCegarLoop]: Abstraction has 1903 states and 5193 transitions. [2021-06-05 07:57:44,611 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 5.142857142857143) internal successors, (72), 14 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:44,612 INFO L276 IsEmpty]: Start isEmpty. Operand 1903 states and 5193 transitions. [2021-06-05 07:57:44,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-06-05 07:57:44,613 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:57:44,613 INFO L521 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:57:44,832 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-06-05 07:57:44,832 INFO L430 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:57:44,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:57:44,832 INFO L82 PathProgramCache]: Analyzing trace with hash 371282073, now seen corresponding path program 27 times [2021-06-05 07:57:44,832 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:57:44,832 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011768159] [2021-06-05 07:57:44,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:57:44,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:57:44,923 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:44,923 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:57:44,923 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011768159] [2021-06-05 07:57:44,923 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011768159] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:44,923 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [652285126] [2021-06-05 07:57:44,924 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:57:44,982 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-06-05 07:57:44,983 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:57:44,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 14 conjunts are in the unsatisfiable core [2021-06-05 07:57:44,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:57:45,146 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:45,146 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [652285126] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:45,146 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:57:45,146 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2021-06-05 07:57:45,146 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597117987] [2021-06-05 07:57:45,146 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 07:57:45,146 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:57:45,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 07:57:45,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2021-06-05 07:57:45,147 INFO L87 Difference]: Start difference. First operand 1903 states and 5193 transitions. Second operand has 15 states, 15 states have (on average 4.933333333333334) internal successors, (74), 15 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:45,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:57:45,433 INFO L93 Difference]: Finished difference Result 2721 states and 7032 transitions. [2021-06-05 07:57:45,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-05 07:57:45,433 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.933333333333334) internal successors, (74), 15 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-06-05 07:57:45,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:57:45,436 INFO L225 Difference]: With dead ends: 2721 [2021-06-05 07:57:45,436 INFO L226 Difference]: Without dead ends: 2451 [2021-06-05 07:57:45,436 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 268.0ms TimeCoverageRelationStatistics Valid=227, Invalid=703, Unknown=0, NotChecked=0, Total=930 [2021-06-05 07:57:45,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2451 states. [2021-06-05 07:57:45,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2451 to 1978. [2021-06-05 07:57:45,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1978 states, 1977 states have (on average 2.74051593323217) internal successors, (5418), 1977 states have internal predecessors, (5418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:45,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1978 states to 1978 states and 5418 transitions. [2021-06-05 07:57:45,463 INFO L78 Accepts]: Start accepts. Automaton has 1978 states and 5418 transitions. Word has length 70 [2021-06-05 07:57:45,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:57:45,463 INFO L482 AbstractCegarLoop]: Abstraction has 1978 states and 5418 transitions. [2021-06-05 07:57:45,463 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 4.933333333333334) internal successors, (74), 15 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:45,463 INFO L276 IsEmpty]: Start isEmpty. Operand 1978 states and 5418 transitions. [2021-06-05 07:57:45,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-06-05 07:57:45,465 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:57:45,465 INFO L521 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:57:45,682 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:57:45,682 INFO L430 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:57:45,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:57:45,682 INFO L82 PathProgramCache]: Analyzing trace with hash 985521543, now seen corresponding path program 28 times [2021-06-05 07:57:45,682 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:57:45,682 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561212165] [2021-06-05 07:57:45,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:57:45,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:57:45,767 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:45,767 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:57:45,767 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561212165] [2021-06-05 07:57:45,767 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561212165] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:45,768 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1775739594] [2021-06-05 07:57:45,768 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:57:45,826 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 07:57:45,826 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:57:45,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 14 conjunts are in the unsatisfiable core [2021-06-05 07:57:45,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:57:45,928 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:45,928 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1775739594] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:45,928 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:57:45,928 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2021-06-05 07:57:45,928 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862113631] [2021-06-05 07:57:45,928 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 07:57:45,928 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:57:45,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 07:57:45,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-06-05 07:57:45,929 INFO L87 Difference]: Start difference. First operand 1978 states and 5418 transitions. Second operand has 14 states, 14 states have (on average 5.142857142857143) internal successors, (72), 14 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:46,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:57:46,127 INFO L93 Difference]: Finished difference Result 2791 states and 7277 transitions. [2021-06-05 07:57:46,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-06-05 07:57:46,127 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.142857142857143) internal successors, (72), 14 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-06-05 07:57:46,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:57:46,130 INFO L225 Difference]: With dead ends: 2791 [2021-06-05 07:57:46,130 INFO L226 Difference]: Without dead ends: 2521 [2021-06-05 07:57:46,131 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 178.9ms TimeCoverageRelationStatistics Valid=206, Invalid=606, Unknown=0, NotChecked=0, Total=812 [2021-06-05 07:57:46,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2521 states. [2021-06-05 07:57:46,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2521 to 2053. [2021-06-05 07:57:46,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2053 states, 2052 states have (on average 2.757309941520468) internal successors, (5658), 2052 states have internal predecessors, (5658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:46,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2053 states to 2053 states and 5658 transitions. [2021-06-05 07:57:46,162 INFO L78 Accepts]: Start accepts. Automaton has 2053 states and 5658 transitions. Word has length 70 [2021-06-05 07:57:46,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:57:46,163 INFO L482 AbstractCegarLoop]: Abstraction has 2053 states and 5658 transitions. [2021-06-05 07:57:46,163 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 5.142857142857143) internal successors, (72), 14 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:46,163 INFO L276 IsEmpty]: Start isEmpty. Operand 2053 states and 5658 transitions. [2021-06-05 07:57:46,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-06-05 07:57:46,165 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:57:46,165 INFO L521 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:57:46,368 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-06-05 07:57:46,369 INFO L430 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:57:46,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:57:46,369 INFO L82 PathProgramCache]: Analyzing trace with hash -729720745, now seen corresponding path program 29 times [2021-06-05 07:57:46,369 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:57:46,369 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500160637] [2021-06-05 07:57:46,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:57:46,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:57:46,454 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:46,454 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:57:46,454 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500160637] [2021-06-05 07:57:46,454 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500160637] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:46,454 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1776757183] [2021-06-05 07:57:46,454 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:57:46,503 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-06-05 07:57:46,503 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:57:46,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 14 conjunts are in the unsatisfiable core [2021-06-05 07:57:46,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:57:46,605 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:46,605 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1776757183] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:46,605 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:57:46,605 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2021-06-05 07:57:46,605 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970887003] [2021-06-05 07:57:46,605 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 07:57:46,605 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:57:46,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 07:57:46,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2021-06-05 07:57:46,606 INFO L87 Difference]: Start difference. First operand 2053 states and 5658 transitions. Second operand has 15 states, 15 states have (on average 4.933333333333334) internal successors, (74), 15 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:46,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:57:46,937 INFO L93 Difference]: Finished difference Result 3369 states and 8903 transitions. [2021-06-05 07:57:46,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-05 07:57:46,938 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.933333333333334) internal successors, (74), 15 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-06-05 07:57:46,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:57:46,940 INFO L225 Difference]: With dead ends: 3369 [2021-06-05 07:57:46,941 INFO L226 Difference]: Without dead ends: 2746 [2021-06-05 07:57:46,941 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 288.0ms TimeCoverageRelationStatistics Valid=290, Invalid=900, Unknown=0, NotChecked=0, Total=1190 [2021-06-05 07:57:46,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2746 states. [2021-06-05 07:57:46,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2746 to 2128. [2021-06-05 07:57:46,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2128 states, 2127 states have (on average 2.768218147625764) internal successors, (5888), 2127 states have internal predecessors, (5888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:46,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2128 states to 2128 states and 5888 transitions. [2021-06-05 07:57:46,970 INFO L78 Accepts]: Start accepts. Automaton has 2128 states and 5888 transitions. Word has length 70 [2021-06-05 07:57:46,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:57:46,971 INFO L482 AbstractCegarLoop]: Abstraction has 2128 states and 5888 transitions. [2021-06-05 07:57:46,971 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 4.933333333333334) internal successors, (74), 15 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:46,971 INFO L276 IsEmpty]: Start isEmpty. Operand 2128 states and 5888 transitions. [2021-06-05 07:57:46,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-06-05 07:57:46,974 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:57:46,974 INFO L521 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:57:47,176 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-06-05 07:57:47,177 INFO L430 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:57:47,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:57:47,177 INFO L82 PathProgramCache]: Analyzing trace with hash -1762368347, now seen corresponding path program 30 times [2021-06-05 07:57:47,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:57:47,177 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56739185] [2021-06-05 07:57:47,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:57:47,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:57:47,282 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:47,282 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:57:47,282 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56739185] [2021-06-05 07:57:47,282 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56739185] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:47,282 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [876023942] [2021-06-05 07:57:47,282 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:57:47,334 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-06-05 07:57:47,334 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:57:47,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 14 conjunts are in the unsatisfiable core [2021-06-05 07:57:47,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:57:47,449 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:47,449 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [876023942] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:47,449 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:57:47,450 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2021-06-05 07:57:47,450 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638429703] [2021-06-05 07:57:47,450 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 07:57:47,450 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:57:47,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 07:57:47,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-06-05 07:57:47,451 INFO L87 Difference]: Start difference. First operand 2128 states and 5888 transitions. Second operand has 14 states, 14 states have (on average 5.142857142857143) internal successors, (72), 14 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:47,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:57:47,698 INFO L93 Difference]: Finished difference Result 3598 states and 9621 transitions. [2021-06-05 07:57:47,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-06-05 07:57:47,698 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.142857142857143) internal successors, (72), 14 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-06-05 07:57:47,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:57:47,701 INFO L225 Difference]: With dead ends: 3598 [2021-06-05 07:57:47,702 INFO L226 Difference]: Without dead ends: 3328 [2021-06-05 07:57:47,702 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 209.7ms TimeCoverageRelationStatistics Valid=255, Invalid=675, Unknown=0, NotChecked=0, Total=930 [2021-06-05 07:57:47,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3328 states. [2021-06-05 07:57:47,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3328 to 2308. [2021-06-05 07:57:47,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2308 states, 2307 states have (on average 2.7945383615084527) internal successors, (6447), 2307 states have internal predecessors, (6447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:47,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2308 states to 2308 states and 6447 transitions. [2021-06-05 07:57:47,727 INFO L78 Accepts]: Start accepts. Automaton has 2308 states and 6447 transitions. Word has length 70 [2021-06-05 07:57:47,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:57:47,730 INFO L482 AbstractCegarLoop]: Abstraction has 2308 states and 6447 transitions. [2021-06-05 07:57:47,730 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 5.142857142857143) internal successors, (72), 14 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:47,730 INFO L276 IsEmpty]: Start isEmpty. Operand 2308 states and 6447 transitions. [2021-06-05 07:57:47,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-06-05 07:57:47,733 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:57:47,733 INFO L521 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:57:47,933 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-06-05 07:57:47,933 INFO L430 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:57:47,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:57:47,934 INFO L82 PathProgramCache]: Analyzing trace with hash -1740025097, now seen corresponding path program 31 times [2021-06-05 07:57:47,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:57:47,934 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799692535] [2021-06-05 07:57:47,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:57:47,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:57:48,006 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:48,007 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:57:48,007 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799692535] [2021-06-05 07:57:48,007 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799692535] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:48,007 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1255069698] [2021-06-05 07:57:48,007 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:57:48,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:57:48,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 14 conjunts are in the unsatisfiable core [2021-06-05 07:57:48,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:57:48,157 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:48,157 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1255069698] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:48,158 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:57:48,158 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2021-06-05 07:57:48,158 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309764765] [2021-06-05 07:57:48,158 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 07:57:48,158 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:57:48,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 07:57:48,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2021-06-05 07:57:48,159 INFO L87 Difference]: Start difference. First operand 2308 states and 6447 transitions. Second operand has 15 states, 15 states have (on average 4.866666666666666) internal successors, (73), 15 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:48,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:57:48,534 INFO L93 Difference]: Finished difference Result 3421 states and 9121 transitions. [2021-06-05 07:57:48,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-05 07:57:48,534 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.866666666666666) internal successors, (73), 15 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-06-05 07:57:48,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:57:48,537 INFO L225 Difference]: With dead ends: 3421 [2021-06-05 07:57:48,537 INFO L226 Difference]: Without dead ends: 2846 [2021-06-05 07:57:48,537 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 314 ImplicationChecksByTransitivity, 334.7ms TimeCoverageRelationStatistics Valid=357, Invalid=1049, Unknown=0, NotChecked=0, Total=1406 [2021-06-05 07:57:48,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2846 states. [2021-06-05 07:57:48,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2846 to 1803. [2021-06-05 07:57:48,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1803 states, 1802 states have (on average 2.7291897891231964) internal successors, (4918), 1802 states have internal predecessors, (4918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:48,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1803 states to 1803 states and 4918 transitions. [2021-06-05 07:57:48,558 INFO L78 Accepts]: Start accepts. Automaton has 1803 states and 4918 transitions. Word has length 70 [2021-06-05 07:57:48,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:57:48,559 INFO L482 AbstractCegarLoop]: Abstraction has 1803 states and 4918 transitions. [2021-06-05 07:57:48,559 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 4.866666666666666) internal successors, (73), 15 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:48,559 INFO L276 IsEmpty]: Start isEmpty. Operand 1803 states and 4918 transitions. [2021-06-05 07:57:48,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-06-05 07:57:48,560 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:57:48,560 INFO L521 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:57:48,761 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-06-05 07:57:48,761 INFO L430 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:57:48,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:57:48,761 INFO L82 PathProgramCache]: Analyzing trace with hash 751678088, now seen corresponding path program 32 times [2021-06-05 07:57:48,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:57:48,761 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282436332] [2021-06-05 07:57:48,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:57:48,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:57:48,855 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:48,856 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:57:48,856 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282436332] [2021-06-05 07:57:48,856 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282436332] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:48,856 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2032512475] [2021-06-05 07:57:48,856 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:57:48,905 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 07:57:48,905 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:57:48,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 15 conjunts are in the unsatisfiable core [2021-06-05 07:57:48,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:57:49,034 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:49,034 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2032512475] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:49,034 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:57:49,034 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2021-06-05 07:57:49,034 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126868061] [2021-06-05 07:57:49,034 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 07:57:49,034 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:57:49,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 07:57:49,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2021-06-05 07:57:49,035 INFO L87 Difference]: Start difference. First operand 1803 states and 4918 transitions. Second operand has 15 states, 15 states have (on average 5.133333333333334) internal successors, (77), 15 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:49,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:57:49,249 INFO L93 Difference]: Finished difference Result 2621 states and 6757 transitions. [2021-06-05 07:57:49,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-05 07:57:49,249 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.133333333333334) internal successors, (77), 15 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-06-05 07:57:49,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:57:49,251 INFO L225 Difference]: With dead ends: 2621 [2021-06-05 07:57:49,251 INFO L226 Difference]: Without dead ends: 2351 [2021-06-05 07:57:49,251 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 216.2ms TimeCoverageRelationStatistics Valid=200, Invalid=612, Unknown=0, NotChecked=0, Total=812 [2021-06-05 07:57:49,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2351 states. [2021-06-05 07:57:49,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2351 to 1878. [2021-06-05 07:57:49,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1878 states, 1877 states have (on average 2.7400106553010124) internal successors, (5143), 1877 states have internal predecessors, (5143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:49,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1878 states to 1878 states and 5143 transitions. [2021-06-05 07:57:49,277 INFO L78 Accepts]: Start accepts. Automaton has 1878 states and 5143 transitions. Word has length 75 [2021-06-05 07:57:49,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:57:49,277 INFO L482 AbstractCegarLoop]: Abstraction has 1878 states and 5143 transitions. [2021-06-05 07:57:49,278 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 5.133333333333334) internal successors, (77), 15 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:49,278 INFO L276 IsEmpty]: Start isEmpty. Operand 1878 states and 5143 transitions. [2021-06-05 07:57:49,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-06-05 07:57:49,280 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:57:49,280 INFO L521 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:57:49,496 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,36 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:57:49,497 INFO L430 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:57:49,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:57:49,497 INFO L82 PathProgramCache]: Analyzing trace with hash 1750574424, now seen corresponding path program 33 times [2021-06-05 07:57:49,498 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:57:49,498 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322394491] [2021-06-05 07:57:49,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:57:49,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:57:49,611 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:49,611 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:57:49,611 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322394491] [2021-06-05 07:57:49,611 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322394491] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:49,611 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [150519567] [2021-06-05 07:57:49,611 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:57:49,677 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-06-05 07:57:49,677 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:57:49,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 15 conjunts are in the unsatisfiable core [2021-06-05 07:57:49,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:57:49,802 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:49,802 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [150519567] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:49,802 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:57:49,803 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 16 [2021-06-05 07:57:49,803 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009910394] [2021-06-05 07:57:49,803 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:57:49,803 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:57:49,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:57:49,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:57:49,806 INFO L87 Difference]: Start difference. First operand 1878 states and 5143 transitions. Second operand has 16 states, 16 states have (on average 4.9375) internal successors, (79), 16 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:50,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:57:50,035 INFO L93 Difference]: Finished difference Result 2841 states and 7272 transitions. [2021-06-05 07:57:50,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-05 07:57:50,035 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.9375) internal successors, (79), 16 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-06-05 07:57:50,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:57:50,038 INFO L225 Difference]: With dead ends: 2841 [2021-06-05 07:57:50,038 INFO L226 Difference]: Without dead ends: 2571 [2021-06-05 07:57:50,038 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 239.7ms TimeCoverageRelationStatistics Valid=240, Invalid=752, Unknown=0, NotChecked=0, Total=992 [2021-06-05 07:57:50,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2571 states. [2021-06-05 07:57:50,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2571 to 1953. [2021-06-05 07:57:50,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1953 states, 1952 states have (on average 2.75) internal successors, (5368), 1952 states have internal predecessors, (5368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:50,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1953 states to 1953 states and 5368 transitions. [2021-06-05 07:57:50,058 INFO L78 Accepts]: Start accepts. Automaton has 1953 states and 5368 transitions. Word has length 75 [2021-06-05 07:57:50,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:57:50,058 INFO L482 AbstractCegarLoop]: Abstraction has 1953 states and 5368 transitions. [2021-06-05 07:57:50,058 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 4.9375) internal successors, (79), 16 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:50,059 INFO L276 IsEmpty]: Start isEmpty. Operand 1953 states and 5368 transitions. [2021-06-05 07:57:50,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-06-05 07:57:50,060 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:57:50,060 INFO L521 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:57:50,261 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2021-06-05 07:57:50,261 INFO L430 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:57:50,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:57:50,261 INFO L82 PathProgramCache]: Analyzing trace with hash -128753466, now seen corresponding path program 34 times [2021-06-05 07:57:50,262 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:57:50,262 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101588256] [2021-06-05 07:57:50,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:57:50,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:57:50,354 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:50,354 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:57:50,354 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101588256] [2021-06-05 07:57:50,354 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101588256] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:50,354 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [388353813] [2021-06-05 07:57:50,354 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:57:50,407 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 07:57:50,407 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:57:50,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 15 conjunts are in the unsatisfiable core [2021-06-05 07:57:50,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:57:50,507 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:50,507 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [388353813] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:50,507 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:57:50,508 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2021-06-05 07:57:50,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749087389] [2021-06-05 07:57:50,508 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 07:57:50,508 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:57:50,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 07:57:50,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2021-06-05 07:57:50,508 INFO L87 Difference]: Start difference. First operand 1953 states and 5368 transitions. Second operand has 15 states, 15 states have (on average 5.133333333333334) internal successors, (77), 15 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:50,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:57:50,722 INFO L93 Difference]: Finished difference Result 2871 states and 7407 transitions. [2021-06-05 07:57:50,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-06-05 07:57:50,722 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.133333333333334) internal successors, (77), 15 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-06-05 07:57:50,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:57:50,726 INFO L225 Difference]: With dead ends: 2871 [2021-06-05 07:57:50,726 INFO L226 Difference]: Without dead ends: 2601 [2021-06-05 07:57:50,726 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 208.2ms TimeCoverageRelationStatistics Valid=248, Invalid=744, Unknown=0, NotChecked=0, Total=992 [2021-06-05 07:57:50,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2601 states. [2021-06-05 07:57:50,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2601 to 2028. [2021-06-05 07:57:50,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2028 states, 2027 states have (on average 2.759250123334978) internal successors, (5593), 2027 states have internal predecessors, (5593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:50,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2028 states to 2028 states and 5593 transitions. [2021-06-05 07:57:50,758 INFO L78 Accepts]: Start accepts. Automaton has 2028 states and 5593 transitions. Word has length 75 [2021-06-05 07:57:50,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:57:50,758 INFO L482 AbstractCegarLoop]: Abstraction has 2028 states and 5593 transitions. [2021-06-05 07:57:50,758 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 5.133333333333334) internal successors, (77), 15 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:50,758 INFO L276 IsEmpty]: Start isEmpty. Operand 2028 states and 5593 transitions. [2021-06-05 07:57:50,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-06-05 07:57:50,761 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:57:50,761 INFO L521 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:57:50,976 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2021-06-05 07:57:50,977 INFO L430 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:57:50,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:57:50,977 INFO L82 PathProgramCache]: Analyzing trace with hash 1901565846, now seen corresponding path program 35 times [2021-06-05 07:57:50,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:57:50,977 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060047175] [2021-06-05 07:57:50,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:57:50,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:57:51,069 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:51,070 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:57:51,070 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060047175] [2021-06-05 07:57:51,070 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060047175] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:51,070 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [628482059] [2021-06-05 07:57:51,070 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 07:57:51,132 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-06-05 07:57:51,133 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:57:51,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 15 conjunts are in the unsatisfiable core [2021-06-05 07:57:51,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:57:51,243 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:51,243 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [628482059] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:51,243 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:57:51,243 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 16 [2021-06-05 07:57:51,244 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576629217] [2021-06-05 07:57:51,244 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:57:51,245 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:57:51,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:57:51,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:57:51,245 INFO L87 Difference]: Start difference. First operand 2028 states and 5593 transitions. Second operand has 16 states, 16 states have (on average 4.9375) internal successors, (79), 16 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:51,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:57:51,575 INFO L93 Difference]: Finished difference Result 2896 states and 7532 transitions. [2021-06-05 07:57:51,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-05 07:57:51,575 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.9375) internal successors, (79), 16 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-06-05 07:57:51,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:57:51,578 INFO L225 Difference]: With dead ends: 2896 [2021-06-05 07:57:51,578 INFO L226 Difference]: Without dead ends: 2626 [2021-06-05 07:57:51,579 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 287.9ms TimeCoverageRelationStatistics Valid=271, Invalid=851, Unknown=0, NotChecked=0, Total=1122 [2021-06-05 07:57:51,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2626 states. [2021-06-05 07:57:51,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2626 to 2103. [2021-06-05 07:57:51,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2103 states, 2102 states have (on average 2.7678401522359657) internal successors, (5818), 2102 states have internal predecessors, (5818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:51,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2103 states to 2103 states and 5818 transitions. [2021-06-05 07:57:51,611 INFO L78 Accepts]: Start accepts. Automaton has 2103 states and 5818 transitions. Word has length 75 [2021-06-05 07:57:51,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:57:51,611 INFO L482 AbstractCegarLoop]: Abstraction has 2103 states and 5818 transitions. [2021-06-05 07:57:51,611 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 4.9375) internal successors, (79), 16 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:51,611 INFO L276 IsEmpty]: Start isEmpty. Operand 2103 states and 5818 transitions. [2021-06-05 07:57:51,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-06-05 07:57:51,613 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:57:51,614 INFO L521 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:57:51,828 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,39 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:57:51,829 INFO L430 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:57:51,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:57:51,829 INFO L82 PathProgramCache]: Analyzing trace with hash -1779161980, now seen corresponding path program 36 times [2021-06-05 07:57:51,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:57:51,829 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691942425] [2021-06-05 07:57:51,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:57:51,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:57:51,910 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:51,910 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:57:51,910 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691942425] [2021-06-05 07:57:51,910 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691942425] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:51,910 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1531541461] [2021-06-05 07:57:51,910 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:57:51,963 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-06-05 07:57:51,963 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:57:51,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 15 conjunts are in the unsatisfiable core [2021-06-05 07:57:51,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:57:52,063 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:52,063 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1531541461] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:52,063 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:57:52,063 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2021-06-05 07:57:52,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166577933] [2021-06-05 07:57:52,063 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 07:57:52,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:57:52,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 07:57:52,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2021-06-05 07:57:52,064 INFO L87 Difference]: Start difference. First operand 2103 states and 5818 transitions. Second operand has 15 states, 15 states have (on average 5.133333333333334) internal successors, (77), 15 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:52,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:57:52,323 INFO L93 Difference]: Finished difference Result 2966 states and 7777 transitions. [2021-06-05 07:57:52,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-05 07:57:52,323 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.133333333333334) internal successors, (77), 15 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-06-05 07:57:52,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:57:52,327 INFO L225 Difference]: With dead ends: 2966 [2021-06-05 07:57:52,327 INFO L226 Difference]: Without dead ends: 2696 [2021-06-05 07:57:52,327 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 235.0ms TimeCoverageRelationStatistics Valid=293, Invalid=829, Unknown=0, NotChecked=0, Total=1122 [2021-06-05 07:57:52,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2696 states. [2021-06-05 07:57:52,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2696 to 2178. [2021-06-05 07:57:52,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2178 states, 2177 states have (on average 2.782728525493799) internal successors, (6058), 2177 states have internal predecessors, (6058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:52,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2178 states to 2178 states and 6058 transitions. [2021-06-05 07:57:52,362 INFO L78 Accepts]: Start accepts. Automaton has 2178 states and 6058 transitions. Word has length 75 [2021-06-05 07:57:52,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:57:52,362 INFO L482 AbstractCegarLoop]: Abstraction has 2178 states and 6058 transitions. [2021-06-05 07:57:52,362 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 5.133333333333334) internal successors, (77), 15 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:52,362 INFO L276 IsEmpty]: Start isEmpty. Operand 2178 states and 6058 transitions. [2021-06-05 07:57:52,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-06-05 07:57:52,365 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:57:52,365 INFO L521 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:57:52,568 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2021-06-05 07:57:52,569 INFO L430 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:57:52,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:57:52,569 INFO L82 PathProgramCache]: Analyzing trace with hash 800563028, now seen corresponding path program 37 times [2021-06-05 07:57:52,569 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:57:52,569 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048155872] [2021-06-05 07:57:52,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:57:52,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:57:52,656 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:52,656 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:57:52,656 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048155872] [2021-06-05 07:57:52,656 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048155872] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:52,656 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [619951157] [2021-06-05 07:57:52,657 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:57:52,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:57:52,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 15 conjunts are in the unsatisfiable core [2021-06-05 07:57:52,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:57:52,842 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:52,843 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [619951157] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:52,843 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:57:52,843 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 16 [2021-06-05 07:57:52,843 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604854008] [2021-06-05 07:57:52,843 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:57:52,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:57:52,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:57:52,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:57:52,844 INFO L87 Difference]: Start difference. First operand 2178 states and 6058 transitions. Second operand has 16 states, 16 states have (on average 4.9375) internal successors, (79), 16 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:53,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:57:53,221 INFO L93 Difference]: Finished difference Result 3544 states and 9403 transitions. [2021-06-05 07:57:53,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-05 07:57:53,221 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.9375) internal successors, (79), 16 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-06-05 07:57:53,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:57:53,224 INFO L225 Difference]: With dead ends: 3544 [2021-06-05 07:57:53,224 INFO L226 Difference]: Without dead ends: 2921 [2021-06-05 07:57:53,224 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 296 ImplicationChecksByTransitivity, 337.8ms TimeCoverageRelationStatistics Valid=341, Invalid=1065, Unknown=0, NotChecked=0, Total=1406 [2021-06-05 07:57:53,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2921 states. [2021-06-05 07:57:53,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2921 to 2253. [2021-06-05 07:57:53,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2253 states, 2252 states have (on average 2.7921847246891653) internal successors, (6288), 2252 states have internal predecessors, (6288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:53,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2253 states to 2253 states and 6288 transitions. [2021-06-05 07:57:53,248 INFO L78 Accepts]: Start accepts. Automaton has 2253 states and 6288 transitions. Word has length 75 [2021-06-05 07:57:53,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:57:53,248 INFO L482 AbstractCegarLoop]: Abstraction has 2253 states and 6288 transitions. [2021-06-05 07:57:53,248 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 4.9375) internal successors, (79), 16 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:53,248 INFO L276 IsEmpty]: Start isEmpty. Operand 2253 states and 6288 transitions. [2021-06-05 07:57:53,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-06-05 07:57:53,251 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:57:53,251 INFO L521 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:57:53,467 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:57:53,467 INFO L430 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:57:53,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:57:53,467 INFO L82 PathProgramCache]: Analyzing trace with hash -232084574, now seen corresponding path program 38 times [2021-06-05 07:57:53,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:57:53,467 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345489914] [2021-06-05 07:57:53,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:57:53,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:57:53,554 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:53,554 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:57:53,554 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345489914] [2021-06-05 07:57:53,554 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345489914] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:53,555 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1062487364] [2021-06-05 07:57:53,555 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:57:53,629 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 07:57:53,629 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:57:53,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 15 conjunts are in the unsatisfiable core [2021-06-05 07:57:53,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:57:53,721 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:53,722 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1062487364] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:53,722 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:57:53,722 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2021-06-05 07:57:53,722 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699059122] [2021-06-05 07:57:53,722 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 07:57:53,722 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:57:53,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 07:57:53,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2021-06-05 07:57:53,723 INFO L87 Difference]: Start difference. First operand 2253 states and 6288 transitions. Second operand has 15 states, 15 states have (on average 5.133333333333334) internal successors, (77), 15 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:54,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:57:54,034 INFO L93 Difference]: Finished difference Result 3748 states and 10071 transitions. [2021-06-05 07:57:54,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-05 07:57:54,035 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.133333333333334) internal successors, (77), 15 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-06-05 07:57:54,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:57:54,038 INFO L225 Difference]: With dead ends: 3748 [2021-06-05 07:57:54,038 INFO L226 Difference]: Without dead ends: 3478 [2021-06-05 07:57:54,039 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 298 ImplicationChecksByTransitivity, 254.6ms TimeCoverageRelationStatistics Valid=355, Invalid=905, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 07:57:54,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3478 states. [2021-06-05 07:57:54,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3478 to 2433. [2021-06-05 07:57:54,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2433 states, 2432 states have (on average 2.815378289473684) internal successors, (6847), 2432 states have internal predecessors, (6847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:54,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2433 states to 2433 states and 6847 transitions. [2021-06-05 07:57:54,064 INFO L78 Accepts]: Start accepts. Automaton has 2433 states and 6847 transitions. Word has length 75 [2021-06-05 07:57:54,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:57:54,064 INFO L482 AbstractCegarLoop]: Abstraction has 2433 states and 6847 transitions. [2021-06-05 07:57:54,064 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 5.133333333333334) internal successors, (77), 15 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:54,064 INFO L276 IsEmpty]: Start isEmpty. Operand 2433 states and 6847 transitions. [2021-06-05 07:57:54,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-06-05 07:57:54,066 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:57:54,066 INFO L521 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:57:54,280 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2021-06-05 07:57:54,281 INFO L430 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:57:54,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:57:54,281 INFO L82 PathProgramCache]: Analyzing trace with hash -209741324, now seen corresponding path program 39 times [2021-06-05 07:57:54,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:57:54,281 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440407298] [2021-06-05 07:57:54,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:57:54,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:57:54,368 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:54,369 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:57:54,369 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440407298] [2021-06-05 07:57:54,369 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440407298] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:54,369 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1522469346] [2021-06-05 07:57:54,369 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:57:54,435 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-06-05 07:57:54,435 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:57:54,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 15 conjunts are in the unsatisfiable core [2021-06-05 07:57:54,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:57:54,532 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:54,533 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1522469346] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:54,533 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:57:54,533 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 16 [2021-06-05 07:57:54,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952496454] [2021-06-05 07:57:54,533 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:57:54,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:57:54,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:57:54,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:57:54,534 INFO L87 Difference]: Start difference. First operand 2433 states and 6847 transitions. Second operand has 16 states, 16 states have (on average 4.875) internal successors, (78), 16 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:54,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:57:54,926 INFO L93 Difference]: Finished difference Result 3616 states and 9736 transitions. [2021-06-05 07:57:54,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-06-05 07:57:54,927 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.875) internal successors, (78), 16 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-06-05 07:57:54,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:57:54,930 INFO L225 Difference]: With dead ends: 3616 [2021-06-05 07:57:54,930 INFO L226 Difference]: Without dead ends: 3041 [2021-06-05 07:57:54,930 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 391 ImplicationChecksByTransitivity, 347.3ms TimeCoverageRelationStatistics Valid=416, Invalid=1224, Unknown=0, NotChecked=0, Total=1640 [2021-06-05 07:57:54,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3041 states. [2021-06-05 07:57:54,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3041 to 1724. [2021-06-05 07:57:54,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1724 states, 1723 states have (on average 2.731282646546721) internal successors, (4706), 1723 states have internal predecessors, (4706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:54,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1724 states to 1724 states and 4706 transitions. [2021-06-05 07:57:54,949 INFO L78 Accepts]: Start accepts. Automaton has 1724 states and 4706 transitions. Word has length 75 [2021-06-05 07:57:54,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:57:54,950 INFO L482 AbstractCegarLoop]: Abstraction has 1724 states and 4706 transitions. [2021-06-05 07:57:54,950 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 4.875) internal successors, (78), 16 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:54,950 INFO L276 IsEmpty]: Start isEmpty. Operand 1724 states and 4706 transitions. [2021-06-05 07:57:54,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-06-05 07:57:54,951 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:57:54,951 INFO L521 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:57:55,151 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47,43 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:57:55,152 INFO L430 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:57:55,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:57:55,152 INFO L82 PathProgramCache]: Analyzing trace with hash 452139800, now seen corresponding path program 40 times [2021-06-05 07:57:55,152 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:57:55,152 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503455727] [2021-06-05 07:57:55,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:57:55,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:57:55,269 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:55,269 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:57:55,269 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503455727] [2021-06-05 07:57:55,270 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503455727] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:55,270 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [89278129] [2021-06-05 07:57:55,270 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:57:55,319 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 07:57:55,320 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:57:55,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 17 conjunts are in the unsatisfiable core [2021-06-05 07:57:55,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:57:55,462 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:55,463 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [89278129] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:55,463 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:57:55,463 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 19 [2021-06-05 07:57:55,463 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020305037] [2021-06-05 07:57:55,463 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 07:57:55,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:57:55,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 07:57:55,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2021-06-05 07:57:55,464 INFO L87 Difference]: Start difference. First operand 1724 states and 4706 transitions. Second operand has 19 states, 19 states have (on average 5.7894736842105265) internal successors, (110), 19 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:55,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:57:55,750 INFO L93 Difference]: Finished difference Result 2614 states and 6806 transitions. [2021-06-05 07:57:55,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-05 07:57:55,751 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.7894736842105265) internal successors, (110), 19 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-06-05 07:57:55,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:57:55,753 INFO L225 Difference]: With dead ends: 2614 [2021-06-05 07:57:55,753 INFO L226 Difference]: Without dead ends: 2280 [2021-06-05 07:57:55,753 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 276.5ms TimeCoverageRelationStatistics Valid=308, Invalid=882, Unknown=0, NotChecked=0, Total=1190 [2021-06-05 07:57:55,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2280 states. [2021-06-05 07:57:55,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2280 to 1809. [2021-06-05 07:57:55,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1809 states, 1808 states have (on average 2.6969026548672566) internal successors, (4876), 1808 states have internal predecessors, (4876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:55,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1809 states to 1809 states and 4876 transitions. [2021-06-05 07:57:55,775 INFO L78 Accepts]: Start accepts. Automaton has 1809 states and 4876 transitions. Word has length 80 [2021-06-05 07:57:55,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:57:55,775 INFO L482 AbstractCegarLoop]: Abstraction has 1809 states and 4876 transitions. [2021-06-05 07:57:55,775 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 5.7894736842105265) internal successors, (110), 19 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:55,775 INFO L276 IsEmpty]: Start isEmpty. Operand 1809 states and 4876 transitions. [2021-06-05 07:57:55,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-06-05 07:57:55,777 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:57:55,777 INFO L521 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:57:55,977 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2021-06-05 07:57:55,977 INFO L430 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:57:55,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:57:55,978 INFO L82 PathProgramCache]: Analyzing trace with hash 1173866716, now seen corresponding path program 41 times [2021-06-05 07:57:55,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:57:55,978 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580491248] [2021-06-05 07:57:55,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:57:55,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:57:56,099 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:56,100 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:57:56,100 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580491248] [2021-06-05 07:57:56,100 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580491248] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:56,100 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2046768231] [2021-06-05 07:57:56,100 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:57:56,152 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-06-05 07:57:56,152 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:57:56,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 16 conjunts are in the unsatisfiable core [2021-06-05 07:57:56,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:57:56,255 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:56,256 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2046768231] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:56,256 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:57:56,256 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2021-06-05 07:57:56,256 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367355204] [2021-06-05 07:57:56,256 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:57:56,256 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:57:56,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:57:56,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:57:56,257 INFO L87 Difference]: Start difference. First operand 1809 states and 4876 transitions. Second operand has 16 states, 16 states have (on average 5.125) internal successors, (82), 16 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:56,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:57:56,442 INFO L93 Difference]: Finished difference Result 3036 states and 7587 transitions. [2021-06-05 07:57:56,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-06-05 07:57:56,443 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.125) internal successors, (82), 16 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-06-05 07:57:56,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:57:56,445 INFO L225 Difference]: With dead ends: 3036 [2021-06-05 07:57:56,445 INFO L226 Difference]: Without dead ends: 2766 [2021-06-05 07:57:56,446 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 205.9ms TimeCoverageRelationStatistics Valid=215, Invalid=597, Unknown=0, NotChecked=0, Total=812 [2021-06-05 07:57:56,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2766 states. [2021-06-05 07:57:56,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2766 to 1953. [2021-06-05 07:57:56,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1953 states, 1952 states have (on average 2.711577868852459) internal successors, (5293), 1952 states have internal predecessors, (5293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:56,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1953 states to 1953 states and 5293 transitions. [2021-06-05 07:57:56,468 INFO L78 Accepts]: Start accepts. Automaton has 1953 states and 5293 transitions. Word has length 80 [2021-06-05 07:57:56,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:57:56,468 INFO L482 AbstractCegarLoop]: Abstraction has 1953 states and 5293 transitions. [2021-06-05 07:57:56,468 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 5.125) internal successors, (82), 16 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:56,468 INFO L276 IsEmpty]: Start isEmpty. Operand 1953 states and 5293 transitions. [2021-06-05 07:57:56,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-06-05 07:57:56,470 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:57:56,471 INFO L521 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:57:56,693 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2021-06-05 07:57:56,693 INFO L430 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:57:56,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:57:56,693 INFO L82 PathProgramCache]: Analyzing trace with hash -1794345044, now seen corresponding path program 42 times [2021-06-05 07:57:56,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:57:56,693 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021733904] [2021-06-05 07:57:56,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:57:56,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:57:56,800 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:56,800 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:57:56,800 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021733904] [2021-06-05 07:57:56,800 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021733904] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:56,800 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [423967974] [2021-06-05 07:57:56,801 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:57:56,862 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2021-06-05 07:57:56,863 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:57:56,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 16 conjunts are in the unsatisfiable core [2021-06-05 07:57:56,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:57:56,983 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:56,983 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [423967974] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:56,983 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:57:56,984 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2021-06-05 07:57:56,984 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942606401] [2021-06-05 07:57:56,984 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:57:56,984 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:57:56,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:57:56,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:57:56,985 INFO L87 Difference]: Start difference. First operand 1953 states and 5293 transitions. Second operand has 17 states, 17 states have (on average 4.9411764705882355) internal successors, (84), 17 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:57,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:57:57,217 INFO L93 Difference]: Finished difference Result 2996 states and 7582 transitions. [2021-06-05 07:57:57,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-05 07:57:57,217 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.9411764705882355) internal successors, (84), 17 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-06-05 07:57:57,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:57:57,220 INFO L225 Difference]: With dead ends: 2996 [2021-06-05 07:57:57,220 INFO L226 Difference]: Without dead ends: 2726 [2021-06-05 07:57:57,221 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 251.4ms TimeCoverageRelationStatistics Valid=264, Invalid=792, Unknown=0, NotChecked=0, Total=1056 [2021-06-05 07:57:57,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2726 states. [2021-06-05 07:57:57,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2726 to 2028. [2021-06-05 07:57:57,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2028 states, 2027 states have (on average 2.7222496299950665) internal successors, (5518), 2027 states have internal predecessors, (5518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:57,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2028 states to 2028 states and 5518 transitions. [2021-06-05 07:57:57,243 INFO L78 Accepts]: Start accepts. Automaton has 2028 states and 5518 transitions. Word has length 80 [2021-06-05 07:57:57,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:57:57,243 INFO L482 AbstractCegarLoop]: Abstraction has 2028 states and 5518 transitions. [2021-06-05 07:57:57,243 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 4.9411764705882355) internal successors, (84), 17 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:57,243 INFO L276 IsEmpty]: Start isEmpty. Operand 2028 states and 5518 transitions. [2021-06-05 07:57:57,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-06-05 07:57:57,245 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:57:57,245 INFO L521 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:57:57,446 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,46 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:57:57,446 INFO L430 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:57:57,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:57:57,446 INFO L82 PathProgramCache]: Analyzing trace with hash -1340128870, now seen corresponding path program 43 times [2021-06-05 07:57:57,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:57:57,447 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074668484] [2021-06-05 07:57:57,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:57:57,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:57:57,547 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:57,547 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:57:57,547 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074668484] [2021-06-05 07:57:57,547 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074668484] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:57,547 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1534301296] [2021-06-05 07:57:57,547 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:57:57,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:57:57,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 16 conjunts are in the unsatisfiable core [2021-06-05 07:57:57,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:57:57,748 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:57,749 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1534301296] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:57,749 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:57:57,749 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2021-06-05 07:57:57,749 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589091564] [2021-06-05 07:57:57,749 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:57:57,749 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:57:57,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:57:57,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:57:57,750 INFO L87 Difference]: Start difference. First operand 2028 states and 5518 transitions. Second operand has 16 states, 16 states have (on average 5.125) internal successors, (82), 16 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:57,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:57:57,946 INFO L93 Difference]: Finished difference Result 3046 states and 7757 transitions. [2021-06-05 07:57:57,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-06-05 07:57:57,946 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.125) internal successors, (82), 16 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-06-05 07:57:57,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:57:57,949 INFO L225 Difference]: With dead ends: 3046 [2021-06-05 07:57:57,949 INFO L226 Difference]: Without dead ends: 2776 [2021-06-05 07:57:57,949 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 202.7ms TimeCoverageRelationStatistics Valid=229, Invalid=701, Unknown=0, NotChecked=0, Total=930 [2021-06-05 07:57:57,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2776 states. [2021-06-05 07:57:57,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2776 to 2103. [2021-06-05 07:57:57,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2103 states, 2102 states have (on average 2.7321598477640343) internal successors, (5743), 2102 states have internal predecessors, (5743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:57,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2103 states to 2103 states and 5743 transitions. [2021-06-05 07:57:57,970 INFO L78 Accepts]: Start accepts. Automaton has 2103 states and 5743 transitions. Word has length 80 [2021-06-05 07:57:57,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:57:57,970 INFO L482 AbstractCegarLoop]: Abstraction has 2103 states and 5743 transitions. [2021-06-05 07:57:57,970 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 5.125) internal successors, (82), 16 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:57,970 INFO L276 IsEmpty]: Start isEmpty. Operand 2103 states and 5743 transitions. [2021-06-05 07:57:57,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-06-05 07:57:57,972 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:57:57,972 INFO L521 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:57:58,172 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2021-06-05 07:57:58,173 INFO L430 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:57:58,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:57:58,173 INFO L82 PathProgramCache]: Analyzing trace with hash -341232534, now seen corresponding path program 44 times [2021-06-05 07:57:58,173 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:57:58,173 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320533629] [2021-06-05 07:57:58,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:57:58,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:57:58,270 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:58,271 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:57:58,271 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320533629] [2021-06-05 07:57:58,271 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320533629] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:58,271 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1949152769] [2021-06-05 07:57:58,271 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:57:58,321 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 07:57:58,321 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:57:58,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 16 conjunts are in the unsatisfiable core [2021-06-05 07:57:58,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:57:58,464 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:58,464 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1949152769] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:58,464 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:57:58,464 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2021-06-05 07:57:58,465 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095282733] [2021-06-05 07:57:58,465 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:57:58,465 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:57:58,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:57:58,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:57:58,465 INFO L87 Difference]: Start difference. First operand 2103 states and 5743 transitions. Second operand has 17 states, 17 states have (on average 4.9411764705882355) internal successors, (84), 17 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:58,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:57:58,738 INFO L93 Difference]: Finished difference Result 3071 states and 7882 transitions. [2021-06-05 07:57:58,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-05 07:57:58,738 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.9411764705882355) internal successors, (84), 17 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-06-05 07:57:58,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:57:58,741 INFO L225 Difference]: With dead ends: 3071 [2021-06-05 07:57:58,741 INFO L226 Difference]: Without dead ends: 2801 [2021-06-05 07:57:58,741 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 269.6ms TimeCoverageRelationStatistics Valid=286, Invalid=904, Unknown=0, NotChecked=0, Total=1190 [2021-06-05 07:57:58,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2801 states. [2021-06-05 07:57:58,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2801 to 2178. [2021-06-05 07:57:58,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2178 states, 2177 states have (on average 2.7413872301332107) internal successors, (5968), 2177 states have internal predecessors, (5968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:58,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2178 states to 2178 states and 5968 transitions. [2021-06-05 07:57:58,764 INFO L78 Accepts]: Start accepts. Automaton has 2178 states and 5968 transitions. Word has length 80 [2021-06-05 07:57:58,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:57:58,764 INFO L482 AbstractCegarLoop]: Abstraction has 2178 states and 5968 transitions. [2021-06-05 07:57:58,764 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 4.9411764705882355) internal successors, (84), 17 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:58,764 INFO L276 IsEmpty]: Start isEmpty. Operand 2178 states and 5968 transitions. [2021-06-05 07:57:58,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-06-05 07:57:58,766 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:57:58,766 INFO L521 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:57:58,967 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,48 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:57:58,968 INFO L430 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:57:58,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:57:58,968 INFO L82 PathProgramCache]: Analyzing trace with hash 2074406872, now seen corresponding path program 45 times [2021-06-05 07:57:58,968 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:57:58,968 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917389415] [2021-06-05 07:57:58,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:57:58,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:57:59,064 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:59,064 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:57:59,064 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917389415] [2021-06-05 07:57:59,064 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917389415] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:59,064 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2067715671] [2021-06-05 07:57:59,064 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:57:59,120 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-06-05 07:57:59,120 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:57:59,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 16 conjunts are in the unsatisfiable core [2021-06-05 07:57:59,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:57:59,222 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:59,222 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2067715671] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:59,222 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:57:59,222 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2021-06-05 07:57:59,222 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665241719] [2021-06-05 07:57:59,222 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:57:59,222 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:57:59,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:57:59,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:57:59,223 INFO L87 Difference]: Start difference. First operand 2178 states and 5968 transitions. Second operand has 16 states, 16 states have (on average 5.125) internal successors, (82), 16 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:59,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:57:59,458 INFO L93 Difference]: Finished difference Result 3096 states and 8007 transitions. [2021-06-05 07:57:59,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-06-05 07:57:59,458 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.125) internal successors, (82), 16 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-06-05 07:57:59,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:57:59,461 INFO L225 Difference]: With dead ends: 3096 [2021-06-05 07:57:59,461 INFO L226 Difference]: Without dead ends: 2826 [2021-06-05 07:57:59,461 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 220.4ms TimeCoverageRelationStatistics Valid=259, Invalid=797, Unknown=0, NotChecked=0, Total=1056 [2021-06-05 07:57:59,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2826 states. [2021-06-05 07:57:59,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2826 to 2253. [2021-06-05 07:57:59,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2253 states, 2252 states have (on average 2.75) internal successors, (6193), 2252 states have internal predecessors, (6193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:59,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2253 states to 2253 states and 6193 transitions. [2021-06-05 07:57:59,488 INFO L78 Accepts]: Start accepts. Automaton has 2253 states and 6193 transitions. Word has length 80 [2021-06-05 07:57:59,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:57:59,488 INFO L482 AbstractCegarLoop]: Abstraction has 2253 states and 6193 transitions. [2021-06-05 07:57:59,488 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 5.125) internal successors, (82), 16 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:59,488 INFO L276 IsEmpty]: Start isEmpty. Operand 2253 states and 6193 transitions. [2021-06-05 07:57:59,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-06-05 07:57:59,490 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:57:59,490 INFO L521 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:57:59,690 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,49 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:57:59,690 INFO L430 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:57:59,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:57:59,691 INFO L82 PathProgramCache]: Analyzing trace with hash -190241112, now seen corresponding path program 46 times [2021-06-05 07:57:59,691 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:57:59,691 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142035032] [2021-06-05 07:57:59,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:57:59,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:57:59,816 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:59,817 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:57:59,817 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142035032] [2021-06-05 07:57:59,817 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142035032] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:59,817 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [322778360] [2021-06-05 07:57:59,817 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:57:59,882 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 07:57:59,883 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:57:59,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 16 conjunts are in the unsatisfiable core [2021-06-05 07:57:59,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:00,008 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:00,008 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [322778360] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:00,008 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:00,009 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2021-06-05 07:58:00,009 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65645776] [2021-06-05 07:58:00,009 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:58:00,009 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:00,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:58:00,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:58:00,010 INFO L87 Difference]: Start difference. First operand 2253 states and 6193 transitions. Second operand has 17 states, 17 states have (on average 4.9411764705882355) internal successors, (84), 17 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:00,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:00,438 INFO L93 Difference]: Finished difference Result 3121 states and 8132 transitions. [2021-06-05 07:58:00,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-05 07:58:00,439 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.9411764705882355) internal successors, (84), 17 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-06-05 07:58:00,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:00,442 INFO L225 Difference]: With dead ends: 3121 [2021-06-05 07:58:00,442 INFO L226 Difference]: Without dead ends: 2851 [2021-06-05 07:58:00,442 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 398.3ms TimeCoverageRelationStatistics Valid=324, Invalid=1008, Unknown=0, NotChecked=0, Total=1332 [2021-06-05 07:58:00,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2851 states. [2021-06-05 07:58:00,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2851 to 2328. [2021-06-05 07:58:00,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2328 states, 2327 states have (on average 2.758057584873227) internal successors, (6418), 2327 states have internal predecessors, (6418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:00,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2328 states to 2328 states and 6418 transitions. [2021-06-05 07:58:00,479 INFO L78 Accepts]: Start accepts. Automaton has 2328 states and 6418 transitions. Word has length 80 [2021-06-05 07:58:00,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:00,480 INFO L482 AbstractCegarLoop]: Abstraction has 2328 states and 6418 transitions. [2021-06-05 07:58:00,480 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 4.9411764705882355) internal successors, (84), 17 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:00,480 INFO L276 IsEmpty]: Start isEmpty. Operand 2328 states and 6418 transitions. [2021-06-05 07:58:00,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-06-05 07:58:00,482 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:00,482 INFO L521 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:00,705 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2021-06-05 07:58:00,705 INFO L430 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:00,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:00,705 INFO L82 PathProgramCache]: Analyzing trace with hash 423998358, now seen corresponding path program 47 times [2021-06-05 07:58:00,706 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:00,706 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300483245] [2021-06-05 07:58:00,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:00,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:00,807 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:00,808 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:00,808 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300483245] [2021-06-05 07:58:00,808 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300483245] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:00,808 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1918780777] [2021-06-05 07:58:00,808 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:00,858 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-06-05 07:58:00,859 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:58:00,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 16 conjunts are in the unsatisfiable core [2021-06-05 07:58:00,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:00,953 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:00,953 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1918780777] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:00,953 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:00,954 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2021-06-05 07:58:00,954 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919944876] [2021-06-05 07:58:00,954 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:58:00,954 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:00,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:58:00,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:58:00,954 INFO L87 Difference]: Start difference. First operand 2328 states and 6418 transitions. Second operand has 16 states, 16 states have (on average 5.125) internal successors, (82), 16 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:01,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:01,222 INFO L93 Difference]: Finished difference Result 3191 states and 8377 transitions. [2021-06-05 07:58:01,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-05 07:58:01,223 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.125) internal successors, (82), 16 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-06-05 07:58:01,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:01,226 INFO L225 Difference]: With dead ends: 3191 [2021-06-05 07:58:01,226 INFO L226 Difference]: Without dead ends: 2921 [2021-06-05 07:58:01,226 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 255.0ms TimeCoverageRelationStatistics Valid=305, Invalid=885, Unknown=0, NotChecked=0, Total=1190 [2021-06-05 07:58:01,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2921 states. [2021-06-05 07:58:01,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2921 to 2403. [2021-06-05 07:58:01,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2403 states, 2402 states have (on average 2.7718567860116567) internal successors, (6658), 2402 states have internal predecessors, (6658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:01,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2403 states to 2403 states and 6658 transitions. [2021-06-05 07:58:01,252 INFO L78 Accepts]: Start accepts. Automaton has 2403 states and 6658 transitions. Word has length 80 [2021-06-05 07:58:01,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:01,252 INFO L482 AbstractCegarLoop]: Abstraction has 2403 states and 6658 transitions. [2021-06-05 07:58:01,252 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 5.125) internal successors, (82), 16 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:01,252 INFO L276 IsEmpty]: Start isEmpty. Operand 2403 states and 6658 transitions. [2021-06-05 07:58:01,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-06-05 07:58:01,254 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:01,254 INFO L521 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:01,454 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,51 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:01,455 INFO L430 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:01,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:01,455 INFO L82 PathProgramCache]: Analyzing trace with hash -1291243930, now seen corresponding path program 48 times [2021-06-05 07:58:01,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:01,455 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738252992] [2021-06-05 07:58:01,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:01,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:01,547 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:01,547 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:01,547 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738252992] [2021-06-05 07:58:01,547 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738252992] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:01,547 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1621318947] [2021-06-05 07:58:01,547 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:01,599 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2021-06-05 07:58:01,599 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:58:01,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 16 conjunts are in the unsatisfiable core [2021-06-05 07:58:01,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:01,711 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:01,711 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1621318947] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:01,711 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:01,711 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2021-06-05 07:58:01,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872514488] [2021-06-05 07:58:01,712 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:58:01,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:01,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:58:01,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:58:01,712 INFO L87 Difference]: Start difference. First operand 2403 states and 6658 transitions. Second operand has 17 states, 17 states have (on average 4.9411764705882355) internal successors, (84), 17 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:02,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:02,117 INFO L93 Difference]: Finished difference Result 3769 states and 10003 transitions. [2021-06-05 07:58:02,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-06-05 07:58:02,118 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.9411764705882355) internal successors, (84), 17 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-06-05 07:58:02,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:02,121 INFO L225 Difference]: With dead ends: 3769 [2021-06-05 07:58:02,121 INFO L226 Difference]: Without dead ends: 3146 [2021-06-05 07:58:02,122 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 352 ImplicationChecksByTransitivity, 357.7ms TimeCoverageRelationStatistics Valid=401, Invalid=1239, Unknown=0, NotChecked=0, Total=1640 [2021-06-05 07:58:02,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3146 states. [2021-06-05 07:58:02,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3146 to 2478. [2021-06-05 07:58:02,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2478 states, 2477 states have (on average 2.7807832054905126) internal successors, (6888), 2477 states have internal predecessors, (6888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:02,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2478 states to 2478 states and 6888 transitions. [2021-06-05 07:58:02,157 INFO L78 Accepts]: Start accepts. Automaton has 2478 states and 6888 transitions. Word has length 80 [2021-06-05 07:58:02,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:02,157 INFO L482 AbstractCegarLoop]: Abstraction has 2478 states and 6888 transitions. [2021-06-05 07:58:02,157 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 4.9411764705882355) internal successors, (84), 17 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:02,157 INFO L276 IsEmpty]: Start isEmpty. Operand 2478 states and 6888 transitions. [2021-06-05 07:58:02,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-06-05 07:58:02,159 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:02,159 INFO L521 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:02,359 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2021-06-05 07:58:02,360 INFO L430 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:02,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:02,360 INFO L82 PathProgramCache]: Analyzing trace with hash 1971075764, now seen corresponding path program 49 times [2021-06-05 07:58:02,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:02,360 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505237080] [2021-06-05 07:58:02,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:02,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:02,468 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:02,468 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:02,469 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505237080] [2021-06-05 07:58:02,469 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505237080] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:02,469 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [30355401] [2021-06-05 07:58:02,469 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:02,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:02,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 16 conjunts are in the unsatisfiable core [2021-06-05 07:58:02,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:02,624 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:02,624 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [30355401] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:02,624 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:02,624 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2021-06-05 07:58:02,624 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933598762] [2021-06-05 07:58:02,624 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:58:02,624 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:02,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:58:02,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:58:02,625 INFO L87 Difference]: Start difference. First operand 2478 states and 6888 transitions. Second operand has 16 states, 16 states have (on average 5.125) internal successors, (82), 16 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:02,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:02,918 INFO L93 Difference]: Finished difference Result 3998 states and 10721 transitions. [2021-06-05 07:58:02,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-05 07:58:02,918 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.125) internal successors, (82), 16 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-06-05 07:58:02,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:02,923 INFO L225 Difference]: With dead ends: 3998 [2021-06-05 07:58:02,924 INFO L226 Difference]: Without dead ends: 3728 [2021-06-05 07:58:02,924 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 297 ImplicationChecksByTransitivity, 250.8ms TimeCoverageRelationStatistics Valid=368, Invalid=964, Unknown=0, NotChecked=0, Total=1332 [2021-06-05 07:58:02,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3728 states. [2021-06-05 07:58:02,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3728 to 2658. [2021-06-05 07:58:02,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2658 states, 2657 states have (on average 2.8027850959729017) internal successors, (7447), 2657 states have internal predecessors, (7447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:02,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2658 states to 2658 states and 7447 transitions. [2021-06-05 07:58:02,968 INFO L78 Accepts]: Start accepts. Automaton has 2658 states and 7447 transitions. Word has length 80 [2021-06-05 07:58:02,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:02,969 INFO L482 AbstractCegarLoop]: Abstraction has 2658 states and 7447 transitions. [2021-06-05 07:58:02,969 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 5.125) internal successors, (82), 16 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:02,969 INFO L276 IsEmpty]: Start isEmpty. Operand 2658 states and 7447 transitions. [2021-06-05 07:58:02,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-06-05 07:58:02,971 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:02,972 INFO L521 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:03,194 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2021-06-05 07:58:03,195 INFO L430 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:03,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:03,195 INFO L82 PathProgramCache]: Analyzing trace with hash 1993419014, now seen corresponding path program 50 times [2021-06-05 07:58:03,195 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:03,195 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969089697] [2021-06-05 07:58:03,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:03,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:03,280 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:03,280 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:03,280 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969089697] [2021-06-05 07:58:03,280 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969089697] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:03,280 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1706759959] [2021-06-05 07:58:03,280 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:03,333 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 07:58:03,333 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:58:03,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 16 conjunts are in the unsatisfiable core [2021-06-05 07:58:03,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:03,444 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:03,444 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1706759959] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:03,444 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:03,444 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2021-06-05 07:58:03,445 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289524344] [2021-06-05 07:58:03,445 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:58:03,445 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:03,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:58:03,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:58:03,445 INFO L87 Difference]: Start difference. First operand 2658 states and 7447 transitions. Second operand has 17 states, 17 states have (on average 4.882352941176471) internal successors, (83), 17 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:03,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:03,904 INFO L93 Difference]: Finished difference Result 3821 states and 10221 transitions. [2021-06-05 07:58:03,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-06-05 07:58:03,905 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.882352941176471) internal successors, (83), 17 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-06-05 07:58:03,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:03,908 INFO L225 Difference]: With dead ends: 3821 [2021-06-05 07:58:03,909 INFO L226 Difference]: Without dead ends: 3246 [2021-06-05 07:58:03,909 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 415.7ms TimeCoverageRelationStatistics Valid=484, Invalid=1408, Unknown=0, NotChecked=0, Total=1892 [2021-06-05 07:58:03,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3246 states. [2021-06-05 07:58:03,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3246 to 2003. [2021-06-05 07:58:03,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2003 states, 2002 states have (on average 2.7312687312687314) internal successors, (5468), 2002 states have internal predecessors, (5468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:03,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2003 states to 2003 states and 5468 transitions. [2021-06-05 07:58:03,935 INFO L78 Accepts]: Start accepts. Automaton has 2003 states and 5468 transitions. Word has length 80 [2021-06-05 07:58:03,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:03,936 INFO L482 AbstractCegarLoop]: Abstraction has 2003 states and 5468 transitions. [2021-06-05 07:58:03,936 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 4.882352941176471) internal successors, (83), 17 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:03,936 INFO L276 IsEmpty]: Start isEmpty. Operand 2003 states and 5468 transitions. [2021-06-05 07:58:03,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-06-05 07:58:03,937 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:03,937 INFO L521 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:04,138 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2021-06-05 07:58:04,138 INFO L430 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:04,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:04,138 INFO L82 PathProgramCache]: Analyzing trace with hash 1150498713, now seen corresponding path program 51 times [2021-06-05 07:58:04,138 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:04,138 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496410141] [2021-06-05 07:58:04,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:04,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:04,242 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:04,242 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:04,242 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496410141] [2021-06-05 07:58:04,242 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496410141] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:04,242 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [272668676] [2021-06-05 07:58:04,243 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:04,295 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-06-05 07:58:04,295 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:58:04,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 17 conjunts are in the unsatisfiable core [2021-06-05 07:58:04,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:04,423 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:04,423 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [272668676] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:04,423 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:04,423 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17 [2021-06-05 07:58:04,423 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524145755] [2021-06-05 07:58:04,423 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:58:04,423 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:04,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:58:04,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:58:04,424 INFO L87 Difference]: Start difference. First operand 2003 states and 5468 transitions. Second operand has 17 states, 17 states have (on average 5.117647058823529) internal successors, (87), 17 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:04,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:04,657 INFO L93 Difference]: Finished difference Result 2921 states and 7507 transitions. [2021-06-05 07:58:04,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-05 07:58:04,658 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.117647058823529) internal successors, (87), 17 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-06-05 07:58:04,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:04,660 INFO L225 Difference]: With dead ends: 2921 [2021-06-05 07:58:04,660 INFO L226 Difference]: Without dead ends: 2651 [2021-06-05 07:58:04,660 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 229.1ms TimeCoverageRelationStatistics Valid=262, Invalid=794, Unknown=0, NotChecked=0, Total=1056 [2021-06-05 07:58:04,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2651 states. [2021-06-05 07:58:04,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2651 to 2078. [2021-06-05 07:58:04,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2078 states, 2077 states have (on average 2.740972556571979) internal successors, (5693), 2077 states have internal predecessors, (5693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:04,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2078 states to 2078 states and 5693 transitions. [2021-06-05 07:58:04,680 INFO L78 Accepts]: Start accepts. Automaton has 2078 states and 5693 transitions. Word has length 85 [2021-06-05 07:58:04,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:04,680 INFO L482 AbstractCegarLoop]: Abstraction has 2078 states and 5693 transitions. [2021-06-05 07:58:04,680 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 5.117647058823529) internal successors, (87), 17 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:04,680 INFO L276 IsEmpty]: Start isEmpty. Operand 2078 states and 5693 transitions. [2021-06-05 07:58:04,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-06-05 07:58:04,681 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:04,682 INFO L521 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:04,882 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2021-06-05 07:58:04,882 INFO L430 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:04,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:04,882 INFO L82 PathProgramCache]: Analyzing trace with hash -1817713047, now seen corresponding path program 52 times [2021-06-05 07:58:04,883 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:04,883 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761865643] [2021-06-05 07:58:04,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:04,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:05,019 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:05,019 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:05,019 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761865643] [2021-06-05 07:58:05,019 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761865643] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:05,019 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [673502246] [2021-06-05 07:58:05,019 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:05,073 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 07:58:05,074 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:58:05,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 17 conjunts are in the unsatisfiable core [2021-06-05 07:58:05,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:05,197 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:05,197 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [673502246] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:05,197 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:05,197 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 18 [2021-06-05 07:58:05,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346666103] [2021-06-05 07:58:05,197 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 07:58:05,197 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:05,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 07:58:05,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2021-06-05 07:58:05,198 INFO L87 Difference]: Start difference. First operand 2078 states and 5693 transitions. Second operand has 18 states, 18 states have (on average 4.944444444444445) internal successors, (89), 18 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:05,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:05,456 INFO L93 Difference]: Finished difference Result 3191 states and 8122 transitions. [2021-06-05 07:58:05,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-05 07:58:05,456 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.944444444444445) internal successors, (89), 18 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-06-05 07:58:05,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:05,459 INFO L225 Difference]: With dead ends: 3191 [2021-06-05 07:58:05,459 INFO L226 Difference]: Without dead ends: 2921 [2021-06-05 07:58:05,459 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 293.1ms TimeCoverageRelationStatistics Valid=305, Invalid=955, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 07:58:05,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2921 states. [2021-06-05 07:58:05,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2921 to 2153. [2021-06-05 07:58:05,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2153 states, 2152 states have (on average 2.75) internal successors, (5918), 2152 states have internal predecessors, (5918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:05,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2153 states to 2153 states and 5918 transitions. [2021-06-05 07:58:05,481 INFO L78 Accepts]: Start accepts. Automaton has 2153 states and 5918 transitions. Word has length 85 [2021-06-05 07:58:05,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:05,481 INFO L482 AbstractCegarLoop]: Abstraction has 2153 states and 5918 transitions. [2021-06-05 07:58:05,481 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 4.944444444444445) internal successors, (89), 18 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:05,481 INFO L276 IsEmpty]: Start isEmpty. Operand 2153 states and 5918 transitions. [2021-06-05 07:58:05,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-06-05 07:58:05,482 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:05,482 INFO L521 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:05,683 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,56 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:05,683 INFO L430 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:05,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:05,683 INFO L82 PathProgramCache]: Analyzing trace with hash -1363496873, now seen corresponding path program 53 times [2021-06-05 07:58:05,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:05,684 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600784811] [2021-06-05 07:58:05,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:05,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:05,798 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:05,799 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:05,799 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600784811] [2021-06-05 07:58:05,799 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600784811] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:05,799 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [331013360] [2021-06-05 07:58:05,799 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:05,867 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-06-05 07:58:05,868 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:58:05,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 17 conjunts are in the unsatisfiable core [2021-06-05 07:58:05,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:05,971 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:05,971 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [331013360] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:05,972 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:05,972 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17 [2021-06-05 07:58:05,972 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558265702] [2021-06-05 07:58:05,972 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:58:05,972 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:05,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:58:05,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:58:05,973 INFO L87 Difference]: Start difference. First operand 2153 states and 5918 transitions. Second operand has 17 states, 17 states have (on average 5.117647058823529) internal successors, (87), 17 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:06,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:06,215 INFO L93 Difference]: Finished difference Result 3221 states and 8257 transitions. [2021-06-05 07:58:06,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-05 07:58:06,216 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.117647058823529) internal successors, (87), 17 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-06-05 07:58:06,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:06,218 INFO L225 Difference]: With dead ends: 3221 [2021-06-05 07:58:06,218 INFO L226 Difference]: Without dead ends: 2951 [2021-06-05 07:58:06,219 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 244.1ms TimeCoverageRelationStatistics Valid=311, Invalid=949, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 07:58:06,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2951 states. [2021-06-05 07:58:06,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2951 to 2228. [2021-06-05 07:58:06,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2228 states, 2227 states have (on average 2.7584193982936687) internal successors, (6143), 2227 states have internal predecessors, (6143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:06,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2228 states to 2228 states and 6143 transitions. [2021-06-05 07:58:06,249 INFO L78 Accepts]: Start accepts. Automaton has 2228 states and 6143 transitions. Word has length 85 [2021-06-05 07:58:06,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:06,249 INFO L482 AbstractCegarLoop]: Abstraction has 2228 states and 6143 transitions. [2021-06-05 07:58:06,249 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 5.117647058823529) internal successors, (87), 17 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:06,249 INFO L276 IsEmpty]: Start isEmpty. Operand 2228 states and 6143 transitions. [2021-06-05 07:58:06,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-06-05 07:58:06,252 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:06,252 INFO L521 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:06,468 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,57 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:06,469 INFO L430 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:06,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:06,469 INFO L82 PathProgramCache]: Analyzing trace with hash -364600537, now seen corresponding path program 54 times [2021-06-05 07:58:06,469 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:06,469 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393653425] [2021-06-05 07:58:06,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:06,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:06,580 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:06,581 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:06,581 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393653425] [2021-06-05 07:58:06,581 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393653425] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:06,581 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [349256944] [2021-06-05 07:58:06,581 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:06,644 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2021-06-05 07:58:06,644 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:58:06,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 17 conjunts are in the unsatisfiable core [2021-06-05 07:58:06,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:06,771 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:06,771 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [349256944] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:06,771 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:06,771 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 18 [2021-06-05 07:58:06,771 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104851164] [2021-06-05 07:58:06,771 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 07:58:06,772 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:06,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 07:58:06,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2021-06-05 07:58:06,772 INFO L87 Difference]: Start difference. First operand 2228 states and 6143 transitions. Second operand has 18 states, 18 states have (on average 4.944444444444445) internal successors, (89), 18 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:07,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:07,142 INFO L93 Difference]: Finished difference Result 3246 states and 8382 transitions. [2021-06-05 07:58:07,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-05 07:58:07,143 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.944444444444445) internal successors, (89), 18 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-06-05 07:58:07,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:07,145 INFO L225 Difference]: With dead ends: 3246 [2021-06-05 07:58:07,145 INFO L226 Difference]: Without dead ends: 2976 [2021-06-05 07:58:07,146 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 361.8ms TimeCoverageRelationStatistics Valid=334, Invalid=1072, Unknown=0, NotChecked=0, Total=1406 [2021-06-05 07:58:07,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2976 states. [2021-06-05 07:58:07,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2976 to 2303. [2021-06-05 07:58:07,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2303 states, 2302 states have (on average 2.7662901824500437) internal successors, (6368), 2302 states have internal predecessors, (6368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:07,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2303 states to 2303 states and 6368 transitions. [2021-06-05 07:58:07,173 INFO L78 Accepts]: Start accepts. Automaton has 2303 states and 6368 transitions. Word has length 85 [2021-06-05 07:58:07,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:07,174 INFO L482 AbstractCegarLoop]: Abstraction has 2303 states and 6368 transitions. [2021-06-05 07:58:07,174 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 4.944444444444445) internal successors, (89), 18 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:07,174 INFO L276 IsEmpty]: Start isEmpty. Operand 2303 states and 6368 transitions. [2021-06-05 07:58:07,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-06-05 07:58:07,175 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:07,176 INFO L521 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:07,376 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,58 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:07,376 INFO L430 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:07,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:07,377 INFO L82 PathProgramCache]: Analyzing trace with hash 2051038869, now seen corresponding path program 55 times [2021-06-05 07:58:07,377 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:07,377 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328505123] [2021-06-05 07:58:07,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:07,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:07,478 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:07,478 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:07,479 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328505123] [2021-06-05 07:58:07,479 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328505123] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:07,479 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1707868271] [2021-06-05 07:58:07,479 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:07,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:07,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 17 conjunts are in the unsatisfiable core [2021-06-05 07:58:07,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:07,637 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:07,638 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1707868271] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:07,638 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:07,638 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17 [2021-06-05 07:58:07,638 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948108428] [2021-06-05 07:58:07,638 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:58:07,638 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:07,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:58:07,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:58:07,639 INFO L87 Difference]: Start difference. First operand 2303 states and 6368 transitions. Second operand has 17 states, 17 states have (on average 5.117647058823529) internal successors, (87), 17 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:07,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:07,910 INFO L93 Difference]: Finished difference Result 3271 states and 8507 transitions. [2021-06-05 07:58:07,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-05 07:58:07,910 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.117647058823529) internal successors, (87), 17 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-06-05 07:58:07,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:07,913 INFO L225 Difference]: With dead ends: 3271 [2021-06-05 07:58:07,913 INFO L226 Difference]: Without dead ends: 3001 [2021-06-05 07:58:07,913 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 308 ImplicationChecksByTransitivity, 258.4ms TimeCoverageRelationStatistics Valid=354, Invalid=1052, Unknown=0, NotChecked=0, Total=1406 [2021-06-05 07:58:07,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3001 states. [2021-06-05 07:58:07,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3001 to 2378. [2021-06-05 07:58:07,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2378 states, 2377 states have (on average 2.7736642827092974) internal successors, (6593), 2377 states have internal predecessors, (6593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:07,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2378 states to 2378 states and 6593 transitions. [2021-06-05 07:58:07,939 INFO L78 Accepts]: Start accepts. Automaton has 2378 states and 6593 transitions. Word has length 85 [2021-06-05 07:58:07,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:07,939 INFO L482 AbstractCegarLoop]: Abstraction has 2378 states and 6593 transitions. [2021-06-05 07:58:07,939 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 5.117647058823529) internal successors, (87), 17 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:07,939 INFO L276 IsEmpty]: Start isEmpty. Operand 2378 states and 6593 transitions. [2021-06-05 07:58:07,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-06-05 07:58:07,941 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:07,941 INFO L521 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:08,142 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable63 [2021-06-05 07:58:08,142 INFO L430 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:08,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:08,142 INFO L82 PathProgramCache]: Analyzing trace with hash -213609115, now seen corresponding path program 56 times [2021-06-05 07:58:08,142 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:08,142 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772980376] [2021-06-05 07:58:08,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:08,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:08,239 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:08,239 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:08,239 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772980376] [2021-06-05 07:58:08,239 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772980376] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:08,239 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [436489902] [2021-06-05 07:58:08,239 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:08,289 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 07:58:08,289 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:58:08,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 17 conjunts are in the unsatisfiable core [2021-06-05 07:58:08,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:08,405 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:08,405 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [436489902] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:08,405 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:08,405 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 18 [2021-06-05 07:58:08,406 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891841404] [2021-06-05 07:58:08,406 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 07:58:08,406 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:08,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 07:58:08,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2021-06-05 07:58:08,406 INFO L87 Difference]: Start difference. First operand 2378 states and 6593 transitions. Second operand has 18 states, 18 states have (on average 4.944444444444445) internal successors, (89), 18 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:08,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:08,770 INFO L93 Difference]: Finished difference Result 3296 states and 8632 transitions. [2021-06-05 07:58:08,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-05 07:58:08,770 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.944444444444445) internal successors, (89), 18 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-06-05 07:58:08,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:08,773 INFO L225 Difference]: With dead ends: 3296 [2021-06-05 07:58:08,773 INFO L226 Difference]: Without dead ends: 3026 [2021-06-05 07:58:08,774 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 342.8ms TimeCoverageRelationStatistics Valid=379, Invalid=1181, Unknown=0, NotChecked=0, Total=1560 [2021-06-05 07:58:08,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3026 states. [2021-06-05 07:58:08,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3026 to 2453. [2021-06-05 07:58:08,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2453 states, 2452 states have (on average 2.7805872756933114) internal successors, (6818), 2452 states have internal predecessors, (6818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:08,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2453 states to 2453 states and 6818 transitions. [2021-06-05 07:58:08,801 INFO L78 Accepts]: Start accepts. Automaton has 2453 states and 6818 transitions. Word has length 85 [2021-06-05 07:58:08,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:08,801 INFO L482 AbstractCegarLoop]: Abstraction has 2453 states and 6818 transitions. [2021-06-05 07:58:08,801 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 4.944444444444445) internal successors, (89), 18 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:08,801 INFO L276 IsEmpty]: Start isEmpty. Operand 2453 states and 6818 transitions. [2021-06-05 07:58:08,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-06-05 07:58:08,803 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:08,803 INFO L521 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:09,006 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,60 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:09,006 INFO L430 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:09,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:09,006 INFO L82 PathProgramCache]: Analyzing trace with hash 400630355, now seen corresponding path program 57 times [2021-06-05 07:58:09,006 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:09,006 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144737461] [2021-06-05 07:58:09,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:09,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:09,101 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:09,102 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:09,102 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144737461] [2021-06-05 07:58:09,102 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144737461] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:09,102 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [748197941] [2021-06-05 07:58:09,102 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:09,166 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-06-05 07:58:09,166 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:58:09,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 17 conjunts are in the unsatisfiable core [2021-06-05 07:58:09,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:09,266 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:09,266 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [748197941] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:09,266 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:09,266 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17 [2021-06-05 07:58:09,266 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752982699] [2021-06-05 07:58:09,266 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:58:09,266 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:09,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:58:09,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:58:09,267 INFO L87 Difference]: Start difference. First operand 2453 states and 6818 transitions. Second operand has 17 states, 17 states have (on average 5.117647058823529) internal successors, (87), 17 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:09,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:09,592 INFO L93 Difference]: Finished difference Result 3366 states and 8877 transitions. [2021-06-05 07:58:09,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-05 07:58:09,592 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.117647058823529) internal successors, (87), 17 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-06-05 07:58:09,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:09,596 INFO L225 Difference]: With dead ends: 3366 [2021-06-05 07:58:09,596 INFO L226 Difference]: Without dead ends: 3096 [2021-06-05 07:58:09,596 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 370 ImplicationChecksByTransitivity, 306.2ms TimeCoverageRelationStatistics Valid=413, Invalid=1147, Unknown=0, NotChecked=0, Total=1560 [2021-06-05 07:58:09,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3096 states. [2021-06-05 07:58:09,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3096 to 2528. [2021-06-05 07:58:09,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2528 states, 2527 states have (on average 2.7930352196280173) internal successors, (7058), 2527 states have internal predecessors, (7058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:09,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2528 states to 2528 states and 7058 transitions. [2021-06-05 07:58:09,633 INFO L78 Accepts]: Start accepts. Automaton has 2528 states and 7058 transitions. Word has length 85 [2021-06-05 07:58:09,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:09,633 INFO L482 AbstractCegarLoop]: Abstraction has 2528 states and 7058 transitions. [2021-06-05 07:58:09,633 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 5.117647058823529) internal successors, (87), 17 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:09,633 INFO L276 IsEmpty]: Start isEmpty. Operand 2528 states and 7058 transitions. [2021-06-05 07:58:09,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-06-05 07:58:09,635 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:09,635 INFO L521 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:09,835 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2021-06-05 07:58:09,835 INFO L430 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:09,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:09,835 INFO L82 PathProgramCache]: Analyzing trace with hash -1314611933, now seen corresponding path program 58 times [2021-06-05 07:58:09,836 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:09,836 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668625652] [2021-06-05 07:58:09,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:09,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:09,933 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:09,933 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:09,933 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668625652] [2021-06-05 07:58:09,933 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668625652] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:09,934 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2065374610] [2021-06-05 07:58:09,934 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:09,984 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 07:58:09,984 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:58:09,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 17 conjunts are in the unsatisfiable core [2021-06-05 07:58:09,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:10,121 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:10,122 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2065374610] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:10,122 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:10,122 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 18 [2021-06-05 07:58:10,123 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956184683] [2021-06-05 07:58:10,123 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 07:58:10,123 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:10,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 07:58:10,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2021-06-05 07:58:10,123 INFO L87 Difference]: Start difference. First operand 2528 states and 7058 transitions. Second operand has 18 states, 18 states have (on average 4.944444444444445) internal successors, (89), 18 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:10,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:10,570 INFO L93 Difference]: Finished difference Result 3944 states and 10503 transitions. [2021-06-05 07:58:10,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-06-05 07:58:10,570 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.944444444444445) internal successors, (89), 18 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-06-05 07:58:10,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:10,573 INFO L225 Difference]: With dead ends: 3944 [2021-06-05 07:58:10,573 INFO L226 Difference]: Without dead ends: 3321 [2021-06-05 07:58:10,574 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 398.9ms TimeCoverageRelationStatistics Valid=463, Invalid=1429, Unknown=0, NotChecked=0, Total=1892 [2021-06-05 07:58:10,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3321 states. [2021-06-05 07:58:10,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3321 to 2603. [2021-06-05 07:58:10,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2603 states, 2602 states have (on average 2.800922367409685) internal successors, (7288), 2602 states have internal predecessors, (7288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:10,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2603 states to 2603 states and 7288 transitions. [2021-06-05 07:58:10,597 INFO L78 Accepts]: Start accepts. Automaton has 2603 states and 7288 transitions. Word has length 85 [2021-06-05 07:58:10,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:10,597 INFO L482 AbstractCegarLoop]: Abstraction has 2603 states and 7288 transitions. [2021-06-05 07:58:10,597 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 4.944444444444445) internal successors, (89), 18 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:10,597 INFO L276 IsEmpty]: Start isEmpty. Operand 2603 states and 7288 transitions. [2021-06-05 07:58:10,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-06-05 07:58:10,599 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:10,599 INFO L521 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:10,799 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,62 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:10,800 INFO L430 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:10,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:10,800 INFO L82 PathProgramCache]: Analyzing trace with hash 1947707761, now seen corresponding path program 59 times [2021-06-05 07:58:10,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:10,800 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399716918] [2021-06-05 07:58:10,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:10,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:10,915 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:10,916 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:10,916 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399716918] [2021-06-05 07:58:10,916 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399716918] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:10,916 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1575566828] [2021-06-05 07:58:10,916 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:10,981 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-06-05 07:58:10,981 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:58:10,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 17 conjunts are in the unsatisfiable core [2021-06-05 07:58:10,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:11,081 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:11,081 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1575566828] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:11,082 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:11,082 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17 [2021-06-05 07:58:11,082 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069722459] [2021-06-05 07:58:11,082 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:58:11,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:11,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:58:11,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:58:11,082 INFO L87 Difference]: Start difference. First operand 2603 states and 7288 transitions. Second operand has 17 states, 17 states have (on average 5.117647058823529) internal successors, (87), 17 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:11,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:11,414 INFO L93 Difference]: Finished difference Result 4148 states and 11171 transitions. [2021-06-05 07:58:11,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-06-05 07:58:11,414 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.117647058823529) internal successors, (87), 17 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-06-05 07:58:11,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:11,419 INFO L225 Difference]: With dead ends: 4148 [2021-06-05 07:58:11,419 INFO L226 Difference]: Without dead ends: 3878 [2021-06-05 07:58:11,420 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 320.3ms TimeCoverageRelationStatistics Valid=489, Invalid=1233, Unknown=0, NotChecked=0, Total=1722 [2021-06-05 07:58:11,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3878 states. [2021-06-05 07:58:11,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3878 to 2783. [2021-06-05 07:58:11,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2783 states, 2782 states have (on average 2.8206326383896476) internal successors, (7847), 2782 states have internal predecessors, (7847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:11,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2783 states to 2783 states and 7847 transitions. [2021-06-05 07:58:11,462 INFO L78 Accepts]: Start accepts. Automaton has 2783 states and 7847 transitions. Word has length 85 [2021-06-05 07:58:11,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:11,462 INFO L482 AbstractCegarLoop]: Abstraction has 2783 states and 7847 transitions. [2021-06-05 07:58:11,462 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 5.117647058823529) internal successors, (87), 17 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:11,463 INFO L276 IsEmpty]: Start isEmpty. Operand 2783 states and 7847 transitions. [2021-06-05 07:58:11,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-06-05 07:58:11,465 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:11,465 INFO L521 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:11,686 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2021-06-05 07:58:11,687 INFO L430 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:11,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:11,687 INFO L82 PathProgramCache]: Analyzing trace with hash 1970051011, now seen corresponding path program 60 times [2021-06-05 07:58:11,687 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:11,687 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972153103] [2021-06-05 07:58:11,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:11,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:11,798 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:11,798 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:11,798 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972153103] [2021-06-05 07:58:11,798 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972153103] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:11,799 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [428940445] [2021-06-05 07:58:11,799 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:11,853 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2021-06-05 07:58:11,853 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:58:11,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 17 conjunts are in the unsatisfiable core [2021-06-05 07:58:11,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:11,975 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:11,976 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [428940445] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:11,976 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:11,976 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 18 [2021-06-05 07:58:11,976 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805231910] [2021-06-05 07:58:11,976 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 07:58:11,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:11,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 07:58:11,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2021-06-05 07:58:11,977 INFO L87 Difference]: Start difference. First operand 2783 states and 7847 transitions. Second operand has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:12,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:12,490 INFO L93 Difference]: Finished difference Result 4016 states and 10836 transitions. [2021-06-05 07:58:12,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-05 07:58:12,491 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-06-05 07:58:12,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:12,494 INFO L225 Difference]: With dead ends: 4016 [2021-06-05 07:58:12,494 INFO L226 Difference]: Without dead ends: 3441 [2021-06-05 07:58:12,494 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 544 ImplicationChecksByTransitivity, 486.1ms TimeCoverageRelationStatistics Valid=554, Invalid=1608, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 07:58:12,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3441 states. [2021-06-05 07:58:12,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3441 to 1924. [2021-06-05 07:58:12,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1924 states, 1923 states have (on average 2.733229329173167) internal successors, (5256), 1923 states have internal predecessors, (5256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:12,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1924 states to 1924 states and 5256 transitions. [2021-06-05 07:58:12,516 INFO L78 Accepts]: Start accepts. Automaton has 1924 states and 5256 transitions. Word has length 85 [2021-06-05 07:58:12,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:12,516 INFO L482 AbstractCegarLoop]: Abstraction has 1924 states and 5256 transitions. [2021-06-05 07:58:12,516 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:12,516 INFO L276 IsEmpty]: Start isEmpty. Operand 1924 states and 5256 transitions. [2021-06-05 07:58:12,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-06-05 07:58:12,518 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:12,518 INFO L521 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:12,718 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68,64 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:12,718 INFO L430 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:12,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:12,719 INFO L82 PathProgramCache]: Analyzing trace with hash 834350121, now seen corresponding path program 61 times [2021-06-05 07:58:12,719 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:12,719 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072391180] [2021-06-05 07:58:12,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:12,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:12,846 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:12,846 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:12,846 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072391180] [2021-06-05 07:58:12,847 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072391180] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:12,847 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1776959206] [2021-06-05 07:58:12,847 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:12,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:12,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 19 conjunts are in the unsatisfiable core [2021-06-05 07:58:12,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:13,040 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:13,040 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1776959206] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:13,040 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:13,040 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 20 [2021-06-05 07:58:13,040 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442543845] [2021-06-05 07:58:13,040 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 07:58:13,041 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:13,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 07:58:13,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2021-06-05 07:58:13,041 INFO L87 Difference]: Start difference. First operand 1924 states and 5256 transitions. Second operand has 20 states, 20 states have (on average 5.9) internal successors, (118), 20 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:13,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:13,310 INFO L93 Difference]: Finished difference Result 2864 states and 7456 transitions. [2021-06-05 07:58:13,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-05 07:58:13,311 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.9) internal successors, (118), 20 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-06-05 07:58:13,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:13,313 INFO L225 Difference]: With dead ends: 2864 [2021-06-05 07:58:13,313 INFO L226 Difference]: Without dead ends: 2530 [2021-06-05 07:58:13,313 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 267 ImplicationChecksByTransitivity, 295.1ms TimeCoverageRelationStatistics Valid=360, Invalid=1046, Unknown=0, NotChecked=0, Total=1406 [2021-06-05 07:58:13,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2530 states. [2021-06-05 07:58:13,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2530 to 2009. [2021-06-05 07:58:13,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2009 states, 2008 states have (on average 2.702191235059761) internal successors, (5426), 2008 states have internal predecessors, (5426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:13,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2009 states to 2009 states and 5426 transitions. [2021-06-05 07:58:13,333 INFO L78 Accepts]: Start accepts. Automaton has 2009 states and 5426 transitions. Word has length 90 [2021-06-05 07:58:13,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:13,333 INFO L482 AbstractCegarLoop]: Abstraction has 2009 states and 5426 transitions. [2021-06-05 07:58:13,333 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 5.9) internal successors, (118), 20 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:13,333 INFO L276 IsEmpty]: Start isEmpty. Operand 2009 states and 5426 transitions. [2021-06-05 07:58:13,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-06-05 07:58:13,335 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:13,335 INFO L521 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:13,536 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2021-06-05 07:58:13,536 INFO L430 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:13,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:13,536 INFO L82 PathProgramCache]: Analyzing trace with hash -207325971, now seen corresponding path program 62 times [2021-06-05 07:58:13,536 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:13,536 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018602769] [2021-06-05 07:58:13,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:13,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:13,658 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:13,658 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:13,658 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018602769] [2021-06-05 07:58:13,658 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018602769] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:13,659 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [609204043] [2021-06-05 07:58:13,659 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:13,709 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 07:58:13,709 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:58:13,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 18 conjunts are in the unsatisfiable core [2021-06-05 07:58:13,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:13,827 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:13,827 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [609204043] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:13,827 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:13,827 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2021-06-05 07:58:13,828 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066295835] [2021-06-05 07:58:13,828 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:58:13,828 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:13,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:58:13,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:58:13,829 INFO L87 Difference]: Start difference. First operand 2009 states and 5426 transitions. Second operand has 17 states, 17 states have (on average 5.294117647058823) internal successors, (90), 17 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:14,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:14,080 INFO L93 Difference]: Finished difference Result 3386 states and 8437 transitions. [2021-06-05 07:58:14,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-05 07:58:14,081 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.294117647058823) internal successors, (90), 17 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-06-05 07:58:14,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:14,083 INFO L225 Difference]: With dead ends: 3386 [2021-06-05 07:58:14,083 INFO L226 Difference]: Without dead ends: 3116 [2021-06-05 07:58:14,083 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 259.0ms TimeCoverageRelationStatistics Valid=260, Invalid=732, Unknown=0, NotChecked=0, Total=992 [2021-06-05 07:58:14,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3116 states. [2021-06-05 07:58:14,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3116 to 2153. [2021-06-05 07:58:14,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2153 states, 2152 states have (on average 2.715148698884758) internal successors, (5843), 2152 states have internal predecessors, (5843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:14,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2153 states to 2153 states and 5843 transitions. [2021-06-05 07:58:14,105 INFO L78 Accepts]: Start accepts. Automaton has 2153 states and 5843 transitions. Word has length 90 [2021-06-05 07:58:14,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:14,105 INFO L482 AbstractCegarLoop]: Abstraction has 2153 states and 5843 transitions. [2021-06-05 07:58:14,105 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 5.294117647058823) internal successors, (90), 17 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:14,105 INFO L276 IsEmpty]: Start isEmpty. Operand 2153 states and 5843 transitions. [2021-06-05 07:58:14,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-06-05 07:58:14,106 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:14,106 INFO L521 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:14,307 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable70 [2021-06-05 07:58:14,307 INFO L430 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:14,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:14,307 INFO L82 PathProgramCache]: Analyzing trace with hash -452403267, now seen corresponding path program 63 times [2021-06-05 07:58:14,308 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:14,308 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568579123] [2021-06-05 07:58:14,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:14,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:14,431 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:14,431 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:14,431 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568579123] [2021-06-05 07:58:14,431 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568579123] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:14,432 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1258627160] [2021-06-05 07:58:14,432 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:14,502 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-06-05 07:58:14,502 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:58:14,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 18 conjunts are in the unsatisfiable core [2021-06-05 07:58:14,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:14,625 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:14,625 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1258627160] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:14,625 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:14,625 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2021-06-05 07:58:14,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891182737] [2021-06-05 07:58:14,626 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 07:58:14,626 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:14,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 07:58:14,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2021-06-05 07:58:14,626 INFO L87 Difference]: Start difference. First operand 2153 states and 5843 transitions. Second operand has 18 states, 18 states have (on average 5.111111111111111) internal successors, (92), 18 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:14,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:14,933 INFO L93 Difference]: Finished difference Result 3346 states and 8432 transitions. [2021-06-05 07:58:14,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-05 07:58:14,933 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.111111111111111) internal successors, (92), 18 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-06-05 07:58:14,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:14,936 INFO L225 Difference]: With dead ends: 3346 [2021-06-05 07:58:14,936 INFO L226 Difference]: Without dead ends: 3076 [2021-06-05 07:58:14,936 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 298.9ms TimeCoverageRelationStatistics Valid=311, Invalid=949, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 07:58:14,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3076 states. [2021-06-05 07:58:14,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3076 to 2228. [2021-06-05 07:58:14,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2228 states, 2227 states have (on average 2.724741805118994) internal successors, (6068), 2227 states have internal predecessors, (6068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:14,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2228 states to 2228 states and 6068 transitions. [2021-06-05 07:58:14,957 INFO L78 Accepts]: Start accepts. Automaton has 2228 states and 6068 transitions. Word has length 90 [2021-06-05 07:58:14,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:14,958 INFO L482 AbstractCegarLoop]: Abstraction has 2228 states and 6068 transitions. [2021-06-05 07:58:14,958 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 5.111111111111111) internal successors, (92), 18 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:14,958 INFO L276 IsEmpty]: Start isEmpty. Operand 2228 states and 6068 transitions. [2021-06-05 07:58:14,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-06-05 07:58:14,960 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:14,960 INFO L521 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:15,177 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,67 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:15,178 INFO L430 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:15,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:15,178 INFO L82 PathProgramCache]: Analyzing trace with hash -829253589, now seen corresponding path program 64 times [2021-06-05 07:58:15,178 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:15,178 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894463725] [2021-06-05 07:58:15,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:15,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:15,282 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:15,282 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:15,282 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894463725] [2021-06-05 07:58:15,282 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894463725] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:15,282 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1489625617] [2021-06-05 07:58:15,282 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:15,332 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 07:58:15,332 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:58:15,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 18 conjunts are in the unsatisfiable core [2021-06-05 07:58:15,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:15,446 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:15,446 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1489625617] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:15,446 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:15,446 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2021-06-05 07:58:15,446 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421373834] [2021-06-05 07:58:15,447 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:58:15,447 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:15,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:58:15,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:58:15,447 INFO L87 Difference]: Start difference. First operand 2228 states and 6068 transitions. Second operand has 17 states, 17 states have (on average 5.294117647058823) internal successors, (90), 17 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:15,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:15,686 INFO L93 Difference]: Finished difference Result 3396 states and 8607 transitions. [2021-06-05 07:58:15,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-06-05 07:58:15,686 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.294117647058823) internal successors, (90), 17 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-06-05 07:58:15,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:15,689 INFO L225 Difference]: With dead ends: 3396 [2021-06-05 07:58:15,689 INFO L226 Difference]: Without dead ends: 3126 [2021-06-05 07:58:15,689 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 230.8ms TimeCoverageRelationStatistics Valid=273, Invalid=849, Unknown=0, NotChecked=0, Total=1122 [2021-06-05 07:58:15,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3126 states. [2021-06-05 07:58:15,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3126 to 2303. [2021-06-05 07:58:15,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2303 states, 2302 states have (on average 2.7337098175499563) internal successors, (6293), 2302 states have internal predecessors, (6293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:15,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2303 states to 2303 states and 6293 transitions. [2021-06-05 07:58:15,712 INFO L78 Accepts]: Start accepts. Automaton has 2303 states and 6293 transitions. Word has length 90 [2021-06-05 07:58:15,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:15,712 INFO L482 AbstractCegarLoop]: Abstraction has 2303 states and 6293 transitions. [2021-06-05 07:58:15,713 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 5.294117647058823) internal successors, (90), 17 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:15,713 INFO L276 IsEmpty]: Start isEmpty. Operand 2303 states and 6293 transitions. [2021-06-05 07:58:15,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-06-05 07:58:15,714 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:15,716 INFO L521 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:15,928 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,68 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:15,929 INFO L430 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:15,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:15,929 INFO L82 PathProgramCache]: Analyzing trace with hash 497501947, now seen corresponding path program 65 times [2021-06-05 07:58:15,929 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:15,929 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506870291] [2021-06-05 07:58:15,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:15,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:16,045 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:16,045 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:16,045 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506870291] [2021-06-05 07:58:16,045 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506870291] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:16,045 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [217332420] [2021-06-05 07:58:16,045 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:16,095 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-06-05 07:58:16,095 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:58:16,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 18 conjunts are in the unsatisfiable core [2021-06-05 07:58:16,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:16,207 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:16,207 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [217332420] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:16,207 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:16,207 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2021-06-05 07:58:16,207 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707631530] [2021-06-05 07:58:16,207 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 07:58:16,207 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:16,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 07:58:16,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2021-06-05 07:58:16,208 INFO L87 Difference]: Start difference. First operand 2303 states and 6293 transitions. Second operand has 18 states, 18 states have (on average 5.111111111111111) internal successors, (92), 18 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:16,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:16,542 INFO L93 Difference]: Finished difference Result 3421 states and 8732 transitions. [2021-06-05 07:58:16,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-05 07:58:16,542 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.111111111111111) internal successors, (92), 18 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-06-05 07:58:16,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:16,545 INFO L225 Difference]: With dead ends: 3421 [2021-06-05 07:58:16,545 INFO L226 Difference]: Without dead ends: 3151 [2021-06-05 07:58:16,545 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 325.0ms TimeCoverageRelationStatistics Valid=332, Invalid=1074, Unknown=0, NotChecked=0, Total=1406 [2021-06-05 07:58:16,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3151 states. [2021-06-05 07:58:16,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3151 to 2378. [2021-06-05 07:58:16,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2378 states, 2377 states have (on average 2.7421119057635677) internal successors, (6518), 2377 states have internal predecessors, (6518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:16,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2378 states to 2378 states and 6518 transitions. [2021-06-05 07:58:16,570 INFO L78 Accepts]: Start accepts. Automaton has 2378 states and 6518 transitions. Word has length 90 [2021-06-05 07:58:16,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:16,570 INFO L482 AbstractCegarLoop]: Abstraction has 2378 states and 6518 transitions. [2021-06-05 07:58:16,570 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 5.111111111111111) internal successors, (92), 18 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:16,570 INFO L276 IsEmpty]: Start isEmpty. Operand 2378 states and 6518 transitions. [2021-06-05 07:58:16,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-06-05 07:58:16,572 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:16,572 INFO L521 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:16,776 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable73 [2021-06-05 07:58:16,777 INFO L430 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:16,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:16,777 INFO L82 PathProgramCache]: Analyzing trace with hash 951718121, now seen corresponding path program 66 times [2021-06-05 07:58:16,777 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:16,777 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180261238] [2021-06-05 07:58:16,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:16,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:16,887 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:16,887 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:16,887 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180261238] [2021-06-05 07:58:16,887 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180261238] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:16,887 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [175605257] [2021-06-05 07:58:16,887 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:16,962 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-06-05 07:58:16,962 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:58:16,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 18 conjunts are in the unsatisfiable core [2021-06-05 07:58:16,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:17,060 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:17,060 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [175605257] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:17,060 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:17,061 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2021-06-05 07:58:17,061 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928220013] [2021-06-05 07:58:17,061 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:58:17,061 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:17,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:58:17,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:58:17,061 INFO L87 Difference]: Start difference. First operand 2378 states and 6518 transitions. Second operand has 17 states, 17 states have (on average 5.294117647058823) internal successors, (90), 17 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:17,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:17,329 INFO L93 Difference]: Finished difference Result 3446 states and 8857 transitions. [2021-06-05 07:58:17,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-05 07:58:17,329 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.294117647058823) internal successors, (90), 17 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-06-05 07:58:17,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:17,333 INFO L225 Difference]: With dead ends: 3446 [2021-06-05 07:58:17,333 INFO L226 Difference]: Without dead ends: 3176 [2021-06-05 07:58:17,333 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 254.0ms TimeCoverageRelationStatistics Valid=302, Invalid=958, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 07:58:17,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3176 states. [2021-06-05 07:58:17,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3176 to 2453. [2021-06-05 07:58:17,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2453 states, 2452 states have (on average 2.75) internal successors, (6743), 2452 states have internal predecessors, (6743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:17,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2453 states to 2453 states and 6743 transitions. [2021-06-05 07:58:17,363 INFO L78 Accepts]: Start accepts. Automaton has 2453 states and 6743 transitions. Word has length 90 [2021-06-05 07:58:17,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:17,363 INFO L482 AbstractCegarLoop]: Abstraction has 2453 states and 6743 transitions. [2021-06-05 07:58:17,363 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 5.294117647058823) internal successors, (90), 17 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:17,363 INFO L276 IsEmpty]: Start isEmpty. Operand 2453 states and 6743 transitions. [2021-06-05 07:58:17,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-06-05 07:58:17,365 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:17,365 INFO L521 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:17,567 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,70 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:17,567 INFO L430 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:17,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:17,567 INFO L82 PathProgramCache]: Analyzing trace with hash 1950614457, now seen corresponding path program 67 times [2021-06-05 07:58:17,567 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:17,567 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226270448] [2021-06-05 07:58:17,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:17,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:17,683 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:17,684 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:17,684 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226270448] [2021-06-05 07:58:17,684 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226270448] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:17,684 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1962957901] [2021-06-05 07:58:17,684 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:17,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:17,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 18 conjunts are in the unsatisfiable core [2021-06-05 07:58:17,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:17,854 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:17,854 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1962957901] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:17,854 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:17,854 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2021-06-05 07:58:17,854 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472776014] [2021-06-05 07:58:17,855 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 07:58:17,855 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:17,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 07:58:17,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2021-06-05 07:58:17,855 INFO L87 Difference]: Start difference. First operand 2453 states and 6743 transitions. Second operand has 18 states, 18 states have (on average 5.111111111111111) internal successors, (92), 18 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:18,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:18,229 INFO L93 Difference]: Finished difference Result 3471 states and 8982 transitions. [2021-06-05 07:58:18,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-05 07:58:18,229 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.111111111111111) internal successors, (92), 18 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-06-05 07:58:18,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:18,233 INFO L225 Difference]: With dead ends: 3471 [2021-06-05 07:58:18,233 INFO L226 Difference]: Without dead ends: 3201 [2021-06-05 07:58:18,233 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 306 ImplicationChecksByTransitivity, 339.7ms TimeCoverageRelationStatistics Valid=369, Invalid=1191, Unknown=0, NotChecked=0, Total=1560 [2021-06-05 07:58:18,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3201 states. [2021-06-05 07:58:18,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3201 to 2528. [2021-06-05 07:58:18,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2528 states, 2527 states have (on average 2.7574198654531066) internal successors, (6968), 2527 states have internal predecessors, (6968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:18,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2528 states to 2528 states and 6968 transitions. [2021-06-05 07:58:18,260 INFO L78 Accepts]: Start accepts. Automaton has 2528 states and 6968 transitions. Word has length 90 [2021-06-05 07:58:18,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:18,260 INFO L482 AbstractCegarLoop]: Abstraction has 2528 states and 6968 transitions. [2021-06-05 07:58:18,260 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 5.111111111111111) internal successors, (92), 18 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:18,260 INFO L276 IsEmpty]: Start isEmpty. Operand 2528 states and 6968 transitions. [2021-06-05 07:58:18,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-06-05 07:58:18,263 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:18,263 INFO L521 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:18,480 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable75 [2021-06-05 07:58:18,481 INFO L430 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:18,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:18,481 INFO L82 PathProgramCache]: Analyzing trace with hash 71286567, now seen corresponding path program 68 times [2021-06-05 07:58:18,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:18,481 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391396065] [2021-06-05 07:58:18,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:18,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:18,615 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:18,616 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:18,616 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391396065] [2021-06-05 07:58:18,616 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391396065] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:18,616 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [335111006] [2021-06-05 07:58:18,616 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:18,667 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 07:58:18,667 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:58:18,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 18 conjunts are in the unsatisfiable core [2021-06-05 07:58:18,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:18,778 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:18,779 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [335111006] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:18,779 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:18,779 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2021-06-05 07:58:18,779 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963920184] [2021-06-05 07:58:18,779 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:58:18,779 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:18,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:58:18,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:58:18,780 INFO L87 Difference]: Start difference. First operand 2528 states and 6968 transitions. Second operand has 17 states, 17 states have (on average 5.294117647058823) internal successors, (90), 17 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:19,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:19,144 INFO L93 Difference]: Finished difference Result 3496 states and 9107 transitions. [2021-06-05 07:58:19,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-05 07:58:19,144 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.294117647058823) internal successors, (90), 17 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-06-05 07:58:19,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:19,148 INFO L225 Difference]: With dead ends: 3496 [2021-06-05 07:58:19,148 INFO L226 Difference]: Without dead ends: 3226 [2021-06-05 07:58:19,148 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 327.5ms TimeCoverageRelationStatistics Valid=347, Invalid=1059, Unknown=0, NotChecked=0, Total=1406 [2021-06-05 07:58:19,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3226 states. [2021-06-05 07:58:19,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3226 to 2603. [2021-06-05 07:58:19,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2603 states, 2602 states have (on average 2.764411990776326) internal successors, (7193), 2602 states have internal predecessors, (7193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:19,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2603 states to 2603 states and 7193 transitions. [2021-06-05 07:58:19,178 INFO L78 Accepts]: Start accepts. Automaton has 2603 states and 7193 transitions. Word has length 90 [2021-06-05 07:58:19,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:19,179 INFO L482 AbstractCegarLoop]: Abstraction has 2603 states and 7193 transitions. [2021-06-05 07:58:19,179 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 5.294117647058823) internal successors, (90), 17 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:19,179 INFO L276 IsEmpty]: Start isEmpty. Operand 2603 states and 7193 transitions. [2021-06-05 07:58:19,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-06-05 07:58:19,180 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:19,181 INFO L521 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:19,382 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,72 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:19,382 INFO L430 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:19,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:19,382 INFO L82 PathProgramCache]: Analyzing trace with hash 2101605879, now seen corresponding path program 69 times [2021-06-05 07:58:19,382 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:19,382 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107709525] [2021-06-05 07:58:19,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:19,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:19,488 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:19,488 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:19,489 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107709525] [2021-06-05 07:58:19,489 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107709525] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:19,489 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1303042762] [2021-06-05 07:58:19,489 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:19,545 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-06-05 07:58:19,545 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:58:19,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 18 conjunts are in the unsatisfiable core [2021-06-05 07:58:19,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:19,656 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:19,657 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1303042762] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:19,657 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:19,657 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2021-06-05 07:58:19,657 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574795475] [2021-06-05 07:58:19,657 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 07:58:19,657 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:19,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 07:58:19,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2021-06-05 07:58:19,658 INFO L87 Difference]: Start difference. First operand 2603 states and 7193 transitions. Second operand has 18 states, 18 states have (on average 5.111111111111111) internal successors, (92), 18 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:20,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:20,054 INFO L93 Difference]: Finished difference Result 3521 states and 9232 transitions. [2021-06-05 07:58:20,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-06-05 07:58:20,054 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.111111111111111) internal successors, (92), 18 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-06-05 07:58:20,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:20,057 INFO L225 Difference]: With dead ends: 3521 [2021-06-05 07:58:20,057 INFO L226 Difference]: Without dead ends: 3251 [2021-06-05 07:58:20,057 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 361 ImplicationChecksByTransitivity, 370.4ms TimeCoverageRelationStatistics Valid=422, Invalid=1300, Unknown=0, NotChecked=0, Total=1722 [2021-06-05 07:58:20,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3251 states. [2021-06-05 07:58:20,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3251 to 2678. [2021-06-05 07:58:20,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2678 states, 2677 states have (on average 2.771012327231976) internal successors, (7418), 2677 states have internal predecessors, (7418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:20,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2678 states to 2678 states and 7418 transitions. [2021-06-05 07:58:20,084 INFO L78 Accepts]: Start accepts. Automaton has 2678 states and 7418 transitions. Word has length 90 [2021-06-05 07:58:20,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:20,084 INFO L482 AbstractCegarLoop]: Abstraction has 2678 states and 7418 transitions. [2021-06-05 07:58:20,085 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 5.111111111111111) internal successors, (92), 18 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:20,085 INFO L276 IsEmpty]: Start isEmpty. Operand 2678 states and 7418 transitions. [2021-06-05 07:58:20,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-06-05 07:58:20,086 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:20,087 INFO L521 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:20,288 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable77 [2021-06-05 07:58:20,289 INFO L430 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:20,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:20,289 INFO L82 PathProgramCache]: Analyzing trace with hash -1579121947, now seen corresponding path program 70 times [2021-06-05 07:58:20,289 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:20,289 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239374589] [2021-06-05 07:58:20,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:20,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:20,386 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:20,386 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:20,386 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239374589] [2021-06-05 07:58:20,386 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239374589] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:20,386 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1044741129] [2021-06-05 07:58:20,386 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:20,437 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 07:58:20,438 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:58:20,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 18 conjunts are in the unsatisfiable core [2021-06-05 07:58:20,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:20,540 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:20,541 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1044741129] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:20,541 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:20,541 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2021-06-05 07:58:20,541 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25762003] [2021-06-05 07:58:20,541 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:58:20,541 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:20,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:58:20,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:58:20,542 INFO L87 Difference]: Start difference. First operand 2678 states and 7418 transitions. Second operand has 17 states, 17 states have (on average 5.294117647058823) internal successors, (90), 17 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:20,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:20,857 INFO L93 Difference]: Finished difference Result 3591 states and 9477 transitions. [2021-06-05 07:58:20,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-05 07:58:20,858 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.294117647058823) internal successors, (90), 17 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-06-05 07:58:20,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:20,861 INFO L225 Difference]: With dead ends: 3591 [2021-06-05 07:58:20,861 INFO L226 Difference]: Without dead ends: 3321 [2021-06-05 07:58:20,861 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 290.6ms TimeCoverageRelationStatistics Valid=408, Invalid=1152, Unknown=0, NotChecked=0, Total=1560 [2021-06-05 07:58:20,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3321 states. [2021-06-05 07:58:20,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3321 to 2753. [2021-06-05 07:58:20,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2753 states, 2752 states have (on average 2.782703488372093) internal successors, (7658), 2752 states have internal predecessors, (7658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:20,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2753 states to 2753 states and 7658 transitions. [2021-06-05 07:58:20,905 INFO L78 Accepts]: Start accepts. Automaton has 2753 states and 7658 transitions. Word has length 90 [2021-06-05 07:58:20,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:20,905 INFO L482 AbstractCegarLoop]: Abstraction has 2753 states and 7658 transitions. [2021-06-05 07:58:20,905 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 5.294117647058823) internal successors, (90), 17 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:20,905 INFO L276 IsEmpty]: Start isEmpty. Operand 2753 states and 7658 transitions. [2021-06-05 07:58:20,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-06-05 07:58:20,907 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:20,907 INFO L521 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:21,107 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78,74 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:21,108 INFO L430 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:21,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:21,108 INFO L82 PathProgramCache]: Analyzing trace with hash 1000603061, now seen corresponding path program 71 times [2021-06-05 07:58:21,108 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:21,108 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338792111] [2021-06-05 07:58:21,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:21,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:21,228 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:21,228 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:21,228 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338792111] [2021-06-05 07:58:21,228 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338792111] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:21,228 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2119343171] [2021-06-05 07:58:21,229 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:21,282 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-06-05 07:58:21,282 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:58:21,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 18 conjunts are in the unsatisfiable core [2021-06-05 07:58:21,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:21,392 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:21,392 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2119343171] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:21,393 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:21,393 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2021-06-05 07:58:21,393 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114560153] [2021-06-05 07:58:21,393 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 07:58:21,393 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:21,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 07:58:21,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2021-06-05 07:58:21,394 INFO L87 Difference]: Start difference. First operand 2753 states and 7658 transitions. Second operand has 18 states, 18 states have (on average 5.111111111111111) internal successors, (92), 18 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:21,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:21,874 INFO L93 Difference]: Finished difference Result 4169 states and 11103 transitions. [2021-06-05 07:58:21,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-06-05 07:58:21,874 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.111111111111111) internal successors, (92), 18 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-06-05 07:58:21,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:21,878 INFO L225 Difference]: With dead ends: 4169 [2021-06-05 07:58:21,878 INFO L226 Difference]: Without dead ends: 3546 [2021-06-05 07:58:21,878 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 471 ImplicationChecksByTransitivity, 442.1ms TimeCoverageRelationStatistics Valid=512, Invalid=1558, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 07:58:21,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3546 states. [2021-06-05 07:58:21,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3546 to 2828. [2021-06-05 07:58:21,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2828 states, 2827 states have (on average 2.790237000353732) internal successors, (7888), 2827 states have internal predecessors, (7888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:21,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2828 states to 2828 states and 7888 transitions. [2021-06-05 07:58:21,906 INFO L78 Accepts]: Start accepts. Automaton has 2828 states and 7888 transitions. Word has length 90 [2021-06-05 07:58:21,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:21,906 INFO L482 AbstractCegarLoop]: Abstraction has 2828 states and 7888 transitions. [2021-06-05 07:58:21,906 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 5.111111111111111) internal successors, (92), 18 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:21,906 INFO L276 IsEmpty]: Start isEmpty. Operand 2828 states and 7888 transitions. [2021-06-05 07:58:21,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-06-05 07:58:21,908 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:21,908 INFO L521 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:22,108 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2021-06-05 07:58:22,109 INFO L430 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:22,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:22,110 INFO L82 PathProgramCache]: Analyzing trace with hash -32044541, now seen corresponding path program 72 times [2021-06-05 07:58:22,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:22,110 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367760680] [2021-06-05 07:58:22,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:22,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:22,207 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:22,207 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:22,207 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367760680] [2021-06-05 07:58:22,207 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367760680] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:22,207 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1992041085] [2021-06-05 07:58:22,207 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:22,263 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-06-05 07:58:22,264 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:58:22,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 18 conjunts are in the unsatisfiable core [2021-06-05 07:58:22,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:22,360 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:22,361 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1992041085] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:22,361 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:22,361 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2021-06-05 07:58:22,361 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107605166] [2021-06-05 07:58:22,361 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:58:22,361 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:22,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:58:22,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:58:22,362 INFO L87 Difference]: Start difference. First operand 2828 states and 7888 transitions. Second operand has 17 states, 17 states have (on average 5.294117647058823) internal successors, (90), 17 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:22,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:22,764 INFO L93 Difference]: Finished difference Result 4398 states and 11821 transitions. [2021-06-05 07:58:22,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-06-05 07:58:22,764 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.294117647058823) internal successors, (90), 17 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-06-05 07:58:22,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:22,768 INFO L225 Difference]: With dead ends: 4398 [2021-06-05 07:58:22,769 INFO L226 Difference]: Without dead ends: 4128 [2021-06-05 07:58:22,769 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 401 ImplicationChecksByTransitivity, 347.2ms TimeCoverageRelationStatistics Valid=486, Invalid=1236, Unknown=0, NotChecked=0, Total=1722 [2021-06-05 07:58:22,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4128 states. [2021-06-05 07:58:22,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4128 to 3008. [2021-06-05 07:58:22,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3008 states, 3007 states have (on average 2.809112071832391) internal successors, (8447), 3007 states have internal predecessors, (8447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:22,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3008 states to 3008 states and 8447 transitions. [2021-06-05 07:58:22,809 INFO L78 Accepts]: Start accepts. Automaton has 3008 states and 8447 transitions. Word has length 90 [2021-06-05 07:58:22,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:22,809 INFO L482 AbstractCegarLoop]: Abstraction has 3008 states and 8447 transitions. [2021-06-05 07:58:22,809 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 5.294117647058823) internal successors, (90), 17 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:22,809 INFO L276 IsEmpty]: Start isEmpty. Operand 3008 states and 8447 transitions. [2021-06-05 07:58:22,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-06-05 07:58:22,811 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:22,812 INFO L521 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:23,017 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,76 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:23,017 INFO L430 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:23,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:23,018 INFO L82 PathProgramCache]: Analyzing trace with hash -9701291, now seen corresponding path program 73 times [2021-06-05 07:58:23,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:23,018 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893231961] [2021-06-05 07:58:23,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:23,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:23,112 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:23,113 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:23,113 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893231961] [2021-06-05 07:58:23,113 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893231961] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:23,113 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1748677977] [2021-06-05 07:58:23,113 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:23,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:23,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 18 conjunts are in the unsatisfiable core [2021-06-05 07:58:23,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:23,289 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:23,290 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1748677977] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:23,290 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:23,290 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2021-06-05 07:58:23,290 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452715103] [2021-06-05 07:58:23,290 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 07:58:23,290 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:23,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 07:58:23,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2021-06-05 07:58:23,290 INFO L87 Difference]: Start difference. First operand 3008 states and 8447 transitions. Second operand has 18 states, 18 states have (on average 5.111111111111111) internal successors, (92), 18 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:23,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:23,751 INFO L93 Difference]: Finished difference Result 3885 states and 10521 transitions. [2021-06-05 07:58:23,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-06-05 07:58:23,752 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.111111111111111) internal successors, (92), 18 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-06-05 07:58:23,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:23,755 INFO L225 Difference]: With dead ends: 3885 [2021-06-05 07:58:23,755 INFO L226 Difference]: Without dead ends: 3306 [2021-06-05 07:58:23,755 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 483 ImplicationChecksByTransitivity, 423.8ms TimeCoverageRelationStatistics Valid=579, Invalid=1491, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 07:58:23,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3306 states. [2021-06-05 07:58:23,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3306 to 2113. [2021-06-05 07:58:23,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2113 states, 2112 states have (on average 2.7357954545454546) internal successors, (5778), 2112 states have internal predecessors, (5778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:23,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2113 states to 2113 states and 5778 transitions. [2021-06-05 07:58:23,778 INFO L78 Accepts]: Start accepts. Automaton has 2113 states and 5778 transitions. Word has length 90 [2021-06-05 07:58:23,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:23,778 INFO L482 AbstractCegarLoop]: Abstraction has 2113 states and 5778 transitions. [2021-06-05 07:58:23,778 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 5.111111111111111) internal successors, (92), 18 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:23,778 INFO L276 IsEmpty]: Start isEmpty. Operand 2113 states and 5778 transitions. [2021-06-05 07:58:23,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-06-05 07:58:23,780 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:23,780 INFO L521 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:23,980 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,77 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:23,980 INFO L430 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:23,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:23,981 INFO L82 PathProgramCache]: Analyzing trace with hash -567911574, now seen corresponding path program 74 times [2021-06-05 07:58:23,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:23,981 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142466271] [2021-06-05 07:58:23,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:23,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:24,116 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:24,116 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:24,116 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142466271] [2021-06-05 07:58:24,116 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142466271] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:24,117 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1314096747] [2021-06-05 07:58:24,117 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:24,182 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 07:58:24,182 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:58:24,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 19 conjunts are in the unsatisfiable core [2021-06-05 07:58:24,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:24,294 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:24,294 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1314096747] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:24,294 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:24,295 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2021-06-05 07:58:24,295 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867549940] [2021-06-05 07:58:24,295 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 07:58:24,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:24,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 07:58:24,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2021-06-05 07:58:24,295 INFO L87 Difference]: Start difference. First operand 2113 states and 5778 transitions. Second operand has 18 states, 18 states have (on average 5.277777777777778) internal successors, (95), 18 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:24,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:24,601 INFO L93 Difference]: Finished difference Result 3131 states and 8017 transitions. [2021-06-05 07:58:24,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-05 07:58:24,601 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.277777777777778) internal successors, (95), 18 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-06-05 07:58:24,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:24,604 INFO L225 Difference]: With dead ends: 3131 [2021-06-05 07:58:24,604 INFO L226 Difference]: Without dead ends: 2861 [2021-06-05 07:58:24,604 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 303.7ms TimeCoverageRelationStatistics Valid=311, Invalid=949, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 07:58:24,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2861 states. [2021-06-05 07:58:24,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2861 to 2188. [2021-06-05 07:58:24,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2188 states, 2187 states have (on average 2.7448559670781894) internal successors, (6003), 2187 states have internal predecessors, (6003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:24,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2188 states to 2188 states and 6003 transitions. [2021-06-05 07:58:24,625 INFO L78 Accepts]: Start accepts. Automaton has 2188 states and 6003 transitions. Word has length 95 [2021-06-05 07:58:24,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:24,625 INFO L482 AbstractCegarLoop]: Abstraction has 2188 states and 6003 transitions. [2021-06-05 07:58:24,625 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 5.277777777777778) internal successors, (95), 18 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:24,625 INFO L276 IsEmpty]: Start isEmpty. Operand 2188 states and 6003 transitions. [2021-06-05 07:58:24,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-06-05 07:58:24,627 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:24,627 INFO L521 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:24,827 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,78 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:24,827 INFO L430 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:24,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:24,828 INFO L82 PathProgramCache]: Analyzing trace with hash -812988870, now seen corresponding path program 75 times [2021-06-05 07:58:24,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:24,828 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817856875] [2021-06-05 07:58:24,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:24,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:24,961 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:24,961 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:24,961 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817856875] [2021-06-05 07:58:24,961 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817856875] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:24,961 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1711551841] [2021-06-05 07:58:24,961 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:25,018 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-06-05 07:58:25,018 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:58:25,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 19 conjunts are in the unsatisfiable core [2021-06-05 07:58:25,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:25,152 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:25,153 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1711551841] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:25,153 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:25,153 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2021-06-05 07:58:25,153 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511784276] [2021-06-05 07:58:25,153 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 07:58:25,153 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:25,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 07:58:25,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2021-06-05 07:58:25,154 INFO L87 Difference]: Start difference. First operand 2188 states and 6003 transitions. Second operand has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:25,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:25,436 INFO L93 Difference]: Finished difference Result 3451 states and 8732 transitions. [2021-06-05 07:58:25,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-05 07:58:25,437 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-06-05 07:58:25,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:25,440 INFO L225 Difference]: With dead ends: 3451 [2021-06-05 07:58:25,440 INFO L226 Difference]: Without dead ends: 3181 [2021-06-05 07:58:25,440 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 307.8ms TimeCoverageRelationStatistics Valid=355, Invalid=1127, Unknown=0, NotChecked=0, Total=1482 [2021-06-05 07:58:25,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3181 states. [2021-06-05 07:58:25,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3181 to 2263. [2021-06-05 07:58:25,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2263 states, 2262 states have (on average 2.753315649867374) internal successors, (6228), 2262 states have internal predecessors, (6228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:25,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2263 states to 2263 states and 6228 transitions. [2021-06-05 07:58:25,475 INFO L78 Accepts]: Start accepts. Automaton has 2263 states and 6228 transitions. Word has length 95 [2021-06-05 07:58:25,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:25,475 INFO L482 AbstractCegarLoop]: Abstraction has 2263 states and 6228 transitions. [2021-06-05 07:58:25,475 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:25,475 INFO L276 IsEmpty]: Start isEmpty. Operand 2263 states and 6228 transitions. [2021-06-05 07:58:25,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-06-05 07:58:25,476 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:25,477 INFO L521 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:25,680 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,79 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:25,681 INFO L430 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:25,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:25,681 INFO L82 PathProgramCache]: Analyzing trace with hash -1189839192, now seen corresponding path program 76 times [2021-06-05 07:58:25,681 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:25,681 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579038361] [2021-06-05 07:58:25,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:25,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:25,803 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:25,804 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:25,804 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579038361] [2021-06-05 07:58:25,804 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579038361] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:25,804 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [413746269] [2021-06-05 07:58:25,804 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:25,855 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 07:58:25,855 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:58:25,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 19 conjunts are in the unsatisfiable core [2021-06-05 07:58:25,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:25,958 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:25,958 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [413746269] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:25,958 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:25,958 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2021-06-05 07:58:25,958 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72049157] [2021-06-05 07:58:25,959 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 07:58:25,959 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:25,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 07:58:25,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2021-06-05 07:58:25,959 INFO L87 Difference]: Start difference. First operand 2263 states and 6228 transitions. Second operand has 18 states, 18 states have (on average 5.277777777777778) internal successors, (95), 18 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:26,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:26,227 INFO L93 Difference]: Finished difference Result 3481 states and 8867 transitions. [2021-06-05 07:58:26,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-05 07:58:26,228 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.277777777777778) internal successors, (95), 18 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-06-05 07:58:26,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:26,230 INFO L225 Difference]: With dead ends: 3481 [2021-06-05 07:58:26,231 INFO L226 Difference]: Without dead ends: 3211 [2021-06-05 07:58:26,231 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 306 ImplicationChecksByTransitivity, 271.6ms TimeCoverageRelationStatistics Valid=361, Invalid=1121, Unknown=0, NotChecked=0, Total=1482 [2021-06-05 07:58:26,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3211 states. [2021-06-05 07:58:26,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3211 to 2338. [2021-06-05 07:58:26,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2338 states, 2337 states have (on average 2.761232349165597) internal successors, (6453), 2337 states have internal predecessors, (6453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:26,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2338 states to 2338 states and 6453 transitions. [2021-06-05 07:58:26,255 INFO L78 Accepts]: Start accepts. Automaton has 2338 states and 6453 transitions. Word has length 95 [2021-06-05 07:58:26,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:26,255 INFO L482 AbstractCegarLoop]: Abstraction has 2338 states and 6453 transitions. [2021-06-05 07:58:26,255 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 5.277777777777778) internal successors, (95), 18 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:26,255 INFO L276 IsEmpty]: Start isEmpty. Operand 2338 states and 6453 transitions. [2021-06-05 07:58:26,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-06-05 07:58:26,257 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:26,257 INFO L521 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:26,457 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,80 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:26,458 INFO L430 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:26,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:26,459 INFO L82 PathProgramCache]: Analyzing trace with hash 136916344, now seen corresponding path program 77 times [2021-06-05 07:58:26,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:26,459 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150325966] [2021-06-05 07:58:26,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:26,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:26,580 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:26,580 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:26,581 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150325966] [2021-06-05 07:58:26,581 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150325966] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:26,581 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [418607550] [2021-06-05 07:58:26,581 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:26,632 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-06-05 07:58:26,632 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:58:26,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 19 conjunts are in the unsatisfiable core [2021-06-05 07:58:26,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:26,752 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:26,753 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [418607550] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:26,753 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:26,753 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2021-06-05 07:58:26,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529110753] [2021-06-05 07:58:26,753 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 07:58:26,753 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:26,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 07:58:26,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2021-06-05 07:58:26,754 INFO L87 Difference]: Start difference. First operand 2338 states and 6453 transitions. Second operand has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:27,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:27,085 INFO L93 Difference]: Finished difference Result 3506 states and 8992 transitions. [2021-06-05 07:58:27,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-05 07:58:27,085 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-06-05 07:58:27,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:27,088 INFO L225 Difference]: With dead ends: 3506 [2021-06-05 07:58:27,088 INFO L226 Difference]: Without dead ends: 3236 [2021-06-05 07:58:27,088 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 320 ImplicationChecksByTransitivity, 332.4ms TimeCoverageRelationStatistics Valid=383, Invalid=1257, Unknown=0, NotChecked=0, Total=1640 [2021-06-05 07:58:27,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3236 states. [2021-06-05 07:58:27,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3236 to 2413. [2021-06-05 07:58:27,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2413 states, 2412 states have (on average 2.7686567164179103) internal successors, (6678), 2412 states have internal predecessors, (6678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:27,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2413 states to 2413 states and 6678 transitions. [2021-06-05 07:58:27,115 INFO L78 Accepts]: Start accepts. Automaton has 2413 states and 6678 transitions. Word has length 95 [2021-06-05 07:58:27,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:27,115 INFO L482 AbstractCegarLoop]: Abstraction has 2413 states and 6678 transitions. [2021-06-05 07:58:27,115 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:27,115 INFO L276 IsEmpty]: Start isEmpty. Operand 2413 states and 6678 transitions. [2021-06-05 07:58:27,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-06-05 07:58:27,117 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:27,117 INFO L521 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:27,320 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,81 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:27,321 INFO L430 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:27,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:27,321 INFO L82 PathProgramCache]: Analyzing trace with hash 591132518, now seen corresponding path program 78 times [2021-06-05 07:58:27,321 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:27,321 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373219936] [2021-06-05 07:58:27,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:27,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:27,432 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:27,432 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:27,432 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373219936] [2021-06-05 07:58:27,432 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373219936] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:27,432 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1011190561] [2021-06-05 07:58:27,432 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:27,489 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-06-05 07:58:27,489 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:58:27,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 19 conjunts are in the unsatisfiable core [2021-06-05 07:58:27,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:27,597 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:27,597 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1011190561] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:27,597 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:27,597 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2021-06-05 07:58:27,597 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255478859] [2021-06-05 07:58:27,597 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 07:58:27,598 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:27,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 07:58:27,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2021-06-05 07:58:27,598 INFO L87 Difference]: Start difference. First operand 2413 states and 6678 transitions. Second operand has 18 states, 18 states have (on average 5.277777777777778) internal successors, (95), 18 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:27,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:27,918 INFO L93 Difference]: Finished difference Result 3531 states and 9117 transitions. [2021-06-05 07:58:27,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-05 07:58:27,919 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.277777777777778) internal successors, (95), 18 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-06-05 07:58:27,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:27,922 INFO L225 Difference]: With dead ends: 3531 [2021-06-05 07:58:27,922 INFO L226 Difference]: Without dead ends: 3261 [2021-06-05 07:58:27,922 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 363 ImplicationChecksByTransitivity, 306.6ms TimeCoverageRelationStatistics Valid=403, Invalid=1237, Unknown=0, NotChecked=0, Total=1640 [2021-06-05 07:58:27,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3261 states. [2021-06-05 07:58:27,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3261 to 2488. [2021-06-05 07:58:27,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2488 states, 2487 states have (on average 2.7756332931242462) internal successors, (6903), 2487 states have internal predecessors, (6903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:27,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2488 states to 2488 states and 6903 transitions. [2021-06-05 07:58:27,947 INFO L78 Accepts]: Start accepts. Automaton has 2488 states and 6903 transitions. Word has length 95 [2021-06-05 07:58:27,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:27,948 INFO L482 AbstractCegarLoop]: Abstraction has 2488 states and 6903 transitions. [2021-06-05 07:58:27,948 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 5.277777777777778) internal successors, (95), 18 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:27,948 INFO L276 IsEmpty]: Start isEmpty. Operand 2488 states and 6903 transitions. [2021-06-05 07:58:27,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-06-05 07:58:27,949 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:27,949 INFO L521 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:28,150 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,82 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:28,150 INFO L430 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:28,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:28,150 INFO L82 PathProgramCache]: Analyzing trace with hash 1590028854, now seen corresponding path program 79 times [2021-06-05 07:58:28,151 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:28,151 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052613773] [2021-06-05 07:58:28,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:28,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:28,268 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:28,268 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:28,268 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052613773] [2021-06-05 07:58:28,268 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052613773] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:28,268 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1970775104] [2021-06-05 07:58:28,269 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:28,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:28,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 19 conjunts are in the unsatisfiable core [2021-06-05 07:58:28,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:28,442 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:28,443 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1970775104] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:28,443 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:28,443 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2021-06-05 07:58:28,443 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103172888] [2021-06-05 07:58:28,443 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 07:58:28,443 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:28,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 07:58:28,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2021-06-05 07:58:28,443 INFO L87 Difference]: Start difference. First operand 2488 states and 6903 transitions. Second operand has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:28,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:28,837 INFO L93 Difference]: Finished difference Result 3556 states and 9242 transitions. [2021-06-05 07:58:28,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-06-05 07:58:28,837 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-06-05 07:58:28,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:28,840 INFO L225 Difference]: With dead ends: 3556 [2021-06-05 07:58:28,840 INFO L226 Difference]: Without dead ends: 3286 [2021-06-05 07:58:28,841 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 380 ImplicationChecksByTransitivity, 369.5ms TimeCoverageRelationStatistics Valid=427, Invalid=1379, Unknown=0, NotChecked=0, Total=1806 [2021-06-05 07:58:28,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3286 states. [2021-06-05 07:58:28,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3286 to 2563. [2021-06-05 07:58:28,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2563 states, 2562 states have (on average 2.782201405152225) internal successors, (7128), 2562 states have internal predecessors, (7128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:28,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2563 states to 2563 states and 7128 transitions. [2021-06-05 07:58:28,868 INFO L78 Accepts]: Start accepts. Automaton has 2563 states and 7128 transitions. Word has length 95 [2021-06-05 07:58:28,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:28,868 INFO L482 AbstractCegarLoop]: Abstraction has 2563 states and 7128 transitions. [2021-06-05 07:58:28,868 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:28,868 INFO L276 IsEmpty]: Start isEmpty. Operand 2563 states and 7128 transitions. [2021-06-05 07:58:28,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-06-05 07:58:28,870 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:28,870 INFO L521 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:29,071 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable87 [2021-06-05 07:58:29,071 INFO L430 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:29,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:29,072 INFO L82 PathProgramCache]: Analyzing trace with hash -289299036, now seen corresponding path program 80 times [2021-06-05 07:58:29,072 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:29,072 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136264410] [2021-06-05 07:58:29,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:29,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:29,188 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:29,188 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:29,188 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136264410] [2021-06-05 07:58:29,188 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136264410] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:29,189 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1366897908] [2021-06-05 07:58:29,189 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:29,252 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 07:58:29,252 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:58:29,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 19 conjunts are in the unsatisfiable core [2021-06-05 07:58:29,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:29,367 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:29,367 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1366897908] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:29,367 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:29,367 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2021-06-05 07:58:29,367 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242775249] [2021-06-05 07:58:29,367 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 07:58:29,368 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:29,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 07:58:29,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2021-06-05 07:58:29,368 INFO L87 Difference]: Start difference. First operand 2563 states and 7128 transitions. Second operand has 18 states, 18 states have (on average 5.277777777777778) internal successors, (95), 18 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:29,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:29,758 INFO L93 Difference]: Finished difference Result 3581 states and 9367 transitions. [2021-06-05 07:58:29,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-06-05 07:58:29,758 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.277777777777778) internal successors, (95), 18 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-06-05 07:58:29,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:29,762 INFO L225 Difference]: With dead ends: 3581 [2021-06-05 07:58:29,762 INFO L226 Difference]: Without dead ends: 3311 [2021-06-05 07:58:29,763 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 428 ImplicationChecksByTransitivity, 348.1ms TimeCoverageRelationStatistics Valid=461, Invalid=1345, Unknown=0, NotChecked=0, Total=1806 [2021-06-05 07:58:29,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3311 states. [2021-06-05 07:58:29,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3311 to 2638. [2021-06-05 07:58:29,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2638 states, 2637 states have (on average 2.78839590443686) internal successors, (7353), 2637 states have internal predecessors, (7353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:29,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2638 states to 2638 states and 7353 transitions. [2021-06-05 07:58:29,790 INFO L78 Accepts]: Start accepts. Automaton has 2638 states and 7353 transitions. Word has length 95 [2021-06-05 07:58:29,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:29,791 INFO L482 AbstractCegarLoop]: Abstraction has 2638 states and 7353 transitions. [2021-06-05 07:58:29,791 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 5.277777777777778) internal successors, (95), 18 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:29,791 INFO L276 IsEmpty]: Start isEmpty. Operand 2638 states and 7353 transitions. [2021-06-05 07:58:29,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-06-05 07:58:29,792 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:29,793 INFO L521 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:29,993 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88,84 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:29,993 INFO L430 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:29,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:29,993 INFO L82 PathProgramCache]: Analyzing trace with hash 1741020276, now seen corresponding path program 81 times [2021-06-05 07:58:29,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:29,994 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339965932] [2021-06-05 07:58:29,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:29,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:30,117 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:30,117 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:30,117 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339965932] [2021-06-05 07:58:30,117 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339965932] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:30,117 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1005019982] [2021-06-05 07:58:30,117 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:30,176 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-06-05 07:58:30,176 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:58:30,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 19 conjunts are in the unsatisfiable core [2021-06-05 07:58:30,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:30,302 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:30,302 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1005019982] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:30,302 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:30,302 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2021-06-05 07:58:30,302 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123068884] [2021-06-05 07:58:30,303 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 07:58:30,303 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:30,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 07:58:30,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2021-06-05 07:58:30,303 INFO L87 Difference]: Start difference. First operand 2638 states and 7353 transitions. Second operand has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:30,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:30,725 INFO L93 Difference]: Finished difference Result 3606 states and 9492 transitions. [2021-06-05 07:58:30,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-06-05 07:58:30,725 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-06-05 07:58:30,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:30,728 INFO L225 Difference]: With dead ends: 3606 [2021-06-05 07:58:30,728 INFO L226 Difference]: Without dead ends: 3336 [2021-06-05 07:58:30,728 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 448 ImplicationChecksByTransitivity, 391.6ms TimeCoverageRelationStatistics Valid=487, Invalid=1493, Unknown=0, NotChecked=0, Total=1980 [2021-06-05 07:58:30,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3336 states. [2021-06-05 07:58:30,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3336 to 2713. [2021-06-05 07:58:30,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2713 states, 2712 states have (on average 2.7942477876106193) internal successors, (7578), 2712 states have internal predecessors, (7578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:30,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2713 states to 2713 states and 7578 transitions. [2021-06-05 07:58:30,757 INFO L78 Accepts]: Start accepts. Automaton has 2713 states and 7578 transitions. Word has length 95 [2021-06-05 07:58:30,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:30,757 INFO L482 AbstractCegarLoop]: Abstraction has 2713 states and 7578 transitions. [2021-06-05 07:58:30,757 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:30,757 INFO L276 IsEmpty]: Start isEmpty. Operand 2713 states and 7578 transitions. [2021-06-05 07:58:30,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-06-05 07:58:30,759 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:30,759 INFO L521 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:30,959 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable89 [2021-06-05 07:58:30,959 INFO L430 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:30,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:30,960 INFO L82 PathProgramCache]: Analyzing trace with hash -1939707550, now seen corresponding path program 82 times [2021-06-05 07:58:30,960 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:30,960 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76712548] [2021-06-05 07:58:30,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:30,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:31,066 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:31,066 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:31,066 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76712548] [2021-06-05 07:58:31,066 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76712548] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:31,066 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1572469450] [2021-06-05 07:58:31,066 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:31,119 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 07:58:31,119 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:58:31,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 19 conjunts are in the unsatisfiable core [2021-06-05 07:58:31,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:31,229 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:31,229 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1572469450] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:31,229 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:31,229 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2021-06-05 07:58:31,229 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65647672] [2021-06-05 07:58:31,229 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 07:58:31,229 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:31,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 07:58:31,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2021-06-05 07:58:31,230 INFO L87 Difference]: Start difference. First operand 2713 states and 7578 transitions. Second operand has 18 states, 18 states have (on average 5.277777777777778) internal successors, (95), 18 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:31,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:31,582 INFO L93 Difference]: Finished difference Result 3631 states and 9617 transitions. [2021-06-05 07:58:31,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-06-05 07:58:31,582 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.277777777777778) internal successors, (95), 18 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-06-05 07:58:31,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:31,585 INFO L225 Difference]: With dead ends: 3631 [2021-06-05 07:58:31,585 INFO L226 Difference]: Without dead ends: 3361 [2021-06-05 07:58:31,585 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 497 ImplicationChecksByTransitivity, 326.7ms TimeCoverageRelationStatistics Valid=535, Invalid=1445, Unknown=0, NotChecked=0, Total=1980 [2021-06-05 07:58:31,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3361 states. [2021-06-05 07:58:31,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3361 to 2788. [2021-06-05 07:58:31,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2788 states, 2787 states have (on average 2.79978471474704) internal successors, (7803), 2787 states have internal predecessors, (7803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:31,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2788 states to 2788 states and 7803 transitions. [2021-06-05 07:58:31,614 INFO L78 Accepts]: Start accepts. Automaton has 2788 states and 7803 transitions. Word has length 95 [2021-06-05 07:58:31,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:31,614 INFO L482 AbstractCegarLoop]: Abstraction has 2788 states and 7803 transitions. [2021-06-05 07:58:31,614 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 5.277777777777778) internal successors, (95), 18 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:31,615 INFO L276 IsEmpty]: Start isEmpty. Operand 2788 states and 7803 transitions. [2021-06-05 07:58:31,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-06-05 07:58:31,616 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:31,616 INFO L521 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:31,817 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,86 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:31,817 INFO L430 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:31,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:31,817 INFO L82 PathProgramCache]: Analyzing trace with hash 640017458, now seen corresponding path program 83 times [2021-06-05 07:58:31,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:31,817 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356684420] [2021-06-05 07:58:31,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:31,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:31,923 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:31,923 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:31,923 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356684420] [2021-06-05 07:58:31,923 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356684420] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:31,923 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1063602232] [2021-06-05 07:58:31,923 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:31,978 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-06-05 07:58:31,978 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:58:31,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 19 conjunts are in the unsatisfiable core [2021-06-05 07:58:31,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:32,093 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:32,093 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1063602232] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:32,093 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:32,093 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2021-06-05 07:58:32,094 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208746848] [2021-06-05 07:58:32,094 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 07:58:32,094 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:32,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 07:58:32,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2021-06-05 07:58:32,094 INFO L87 Difference]: Start difference. First operand 2788 states and 7803 transitions. Second operand has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:32,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:32,590 INFO L93 Difference]: Finished difference Result 3716 states and 9907 transitions. [2021-06-05 07:58:32,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-06-05 07:58:32,590 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-06-05 07:58:32,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:32,593 INFO L225 Difference]: With dead ends: 3716 [2021-06-05 07:58:32,593 INFO L226 Difference]: Without dead ends: 3446 [2021-06-05 07:58:32,594 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 520 ImplicationChecksByTransitivity, 449.9ms TimeCoverageRelationStatistics Valid=563, Invalid=1599, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 07:58:32,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3446 states. [2021-06-05 07:58:32,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3446 to 2863. [2021-06-05 07:58:32,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2863 states, 2862 states have (on average 2.8120195667365477) internal successors, (8048), 2862 states have internal predecessors, (8048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:32,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2863 states to 2863 states and 8048 transitions. [2021-06-05 07:58:32,627 INFO L78 Accepts]: Start accepts. Automaton has 2863 states and 8048 transitions. Word has length 95 [2021-06-05 07:58:32,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:32,627 INFO L482 AbstractCegarLoop]: Abstraction has 2863 states and 8048 transitions. [2021-06-05 07:58:32,627 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:32,627 INFO L276 IsEmpty]: Start isEmpty. Operand 2863 states and 8048 transitions. [2021-06-05 07:58:32,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-06-05 07:58:32,629 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:32,629 INFO L521 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:32,833 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,87 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:32,833 INFO L430 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:32,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:32,833 INFO L82 PathProgramCache]: Analyzing trace with hash -392630144, now seen corresponding path program 84 times [2021-06-05 07:58:32,833 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:32,833 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869934742] [2021-06-05 07:58:32,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:32,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:32,935 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:32,935 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:32,935 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869934742] [2021-06-05 07:58:32,936 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869934742] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:32,936 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [149991106] [2021-06-05 07:58:32,936 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:32,994 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-06-05 07:58:32,994 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:58:32,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 19 conjunts are in the unsatisfiable core [2021-06-05 07:58:32,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:33,099 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:33,100 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [149991106] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:33,100 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:33,100 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2021-06-05 07:58:33,100 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522337271] [2021-06-05 07:58:33,100 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 07:58:33,100 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:33,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 07:58:33,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2021-06-05 07:58:33,101 INFO L87 Difference]: Start difference. First operand 2863 states and 8048 transitions. Second operand has 18 states, 18 states have (on average 5.277777777777778) internal successors, (95), 18 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:33,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:33,535 INFO L93 Difference]: Finished difference Result 4458 states and 12031 transitions. [2021-06-05 07:58:33,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-05 07:58:33,535 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.277777777777778) internal successors, (95), 18 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-06-05 07:58:33,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:33,539 INFO L225 Difference]: With dead ends: 4458 [2021-06-05 07:58:33,539 INFO L226 Difference]: Without dead ends: 4188 [2021-06-05 07:58:33,539 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 569 ImplicationChecksByTransitivity, 383.1ms TimeCoverageRelationStatistics Valid=626, Invalid=1536, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 07:58:33,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4188 states. [2021-06-05 07:58:33,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4188 to 3043. [2021-06-05 07:58:33,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3043 states, 3042 states have (on average 2.829388560157791) internal successors, (8607), 3042 states have internal predecessors, (8607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:33,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3043 states to 3043 states and 8607 transitions. [2021-06-05 07:58:33,571 INFO L78 Accepts]: Start accepts. Automaton has 3043 states and 8607 transitions. Word has length 95 [2021-06-05 07:58:33,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:33,571 INFO L482 AbstractCegarLoop]: Abstraction has 3043 states and 8607 transitions. [2021-06-05 07:58:33,571 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 5.277777777777778) internal successors, (95), 18 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:33,572 INFO L276 IsEmpty]: Start isEmpty. Operand 3043 states and 8607 transitions. [2021-06-05 07:58:33,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-06-05 07:58:33,573 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:33,573 INFO L521 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:33,774 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,88 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:33,774 INFO L430 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:33,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:33,774 INFO L82 PathProgramCache]: Analyzing trace with hash -370286894, now seen corresponding path program 85 times [2021-06-05 07:58:33,774 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:33,774 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647504224] [2021-06-05 07:58:33,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:33,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:33,870 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:33,871 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:33,871 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647504224] [2021-06-05 07:58:33,871 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647504224] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:33,871 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [612210272] [2021-06-05 07:58:33,871 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:33,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:33,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 19 conjunts are in the unsatisfiable core [2021-06-05 07:58:33,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:34,033 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:34,034 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [612210272] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:34,034 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:34,034 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2021-06-05 07:58:34,034 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470996562] [2021-06-05 07:58:34,034 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 07:58:34,034 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:34,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 07:58:34,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2021-06-05 07:58:34,035 INFO L87 Difference]: Start difference. First operand 3043 states and 8607 transitions. Second operand has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:34,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:34,531 INFO L93 Difference]: Finished difference Result 3920 states and 10681 transitions. [2021-06-05 07:58:34,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-05 07:58:34,531 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-06-05 07:58:34,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:34,534 INFO L225 Difference]: With dead ends: 3920 [2021-06-05 07:58:34,534 INFO L226 Difference]: Without dead ends: 3431 [2021-06-05 07:58:34,535 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 596 ImplicationChecksByTransitivity, 457.4ms TimeCoverageRelationStatistics Valid=658, Invalid=1694, Unknown=0, NotChecked=0, Total=2352 [2021-06-05 07:58:34,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3431 states. [2021-06-05 07:58:34,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3431 to 2034. [2021-06-05 07:58:34,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2034 states, 2033 states have (on average 2.73782587309395) internal successors, (5566), 2033 states have internal predecessors, (5566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:34,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2034 states to 2034 states and 5566 transitions. [2021-06-05 07:58:34,559 INFO L78 Accepts]: Start accepts. Automaton has 2034 states and 5566 transitions. Word has length 95 [2021-06-05 07:58:34,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:34,559 INFO L482 AbstractCegarLoop]: Abstraction has 2034 states and 5566 transitions. [2021-06-05 07:58:34,559 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:34,559 INFO L276 IsEmpty]: Start isEmpty. Operand 2034 states and 5566 transitions. [2021-06-05 07:58:34,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-06-05 07:58:34,560 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:34,561 INFO L521 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:34,761 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,89 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:34,761 INFO L430 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:34,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:34,761 INFO L82 PathProgramCache]: Analyzing trace with hash -2121147398, now seen corresponding path program 86 times [2021-06-05 07:58:34,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:34,761 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244752501] [2021-06-05 07:58:34,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:34,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:34,900 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:34,900 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:34,900 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244752501] [2021-06-05 07:58:34,900 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244752501] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:34,900 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2052965601] [2021-06-05 07:58:34,900 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:34,953 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 07:58:34,953 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:58:34,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 21 conjunts are in the unsatisfiable core [2021-06-05 07:58:34,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:35,092 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:35,093 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2052965601] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:35,093 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:35,093 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 22 [2021-06-05 07:58:35,093 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793348380] [2021-06-05 07:58:35,093 INFO L462 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-06-05 07:58:35,093 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:35,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-06-05 07:58:35,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=360, Unknown=0, NotChecked=0, Total=462 [2021-06-05 07:58:35,094 INFO L87 Difference]: Start difference. First operand 2034 states and 5566 transitions. Second operand has 22 states, 22 states have (on average 5.818181818181818) internal successors, (128), 22 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:35,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:35,401 INFO L93 Difference]: Finished difference Result 3024 states and 7866 transitions. [2021-06-05 07:58:35,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-05 07:58:35,402 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.818181818181818) internal successors, (128), 22 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-06-05 07:58:35,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:35,404 INFO L225 Difference]: With dead ends: 3024 [2021-06-05 07:58:35,405 INFO L226 Difference]: Without dead ends: 2690 [2021-06-05 07:58:35,405 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 334.2ms TimeCoverageRelationStatistics Valid=445, Invalid=1277, Unknown=0, NotChecked=0, Total=1722 [2021-06-05 07:58:35,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2690 states. [2021-06-05 07:58:35,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2690 to 2119. [2021-06-05 07:58:35,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2119 states, 2118 states have (on average 2.7082152974504248) internal successors, (5736), 2118 states have internal predecessors, (5736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:35,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2119 states to 2119 states and 5736 transitions. [2021-06-05 07:58:35,426 INFO L78 Accepts]: Start accepts. Automaton has 2119 states and 5736 transitions. Word has length 100 [2021-06-05 07:58:35,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:35,426 INFO L482 AbstractCegarLoop]: Abstraction has 2119 states and 5736 transitions. [2021-06-05 07:58:35,426 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 5.818181818181818) internal successors, (128), 22 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:35,426 INFO L276 IsEmpty]: Start isEmpty. Operand 2119 states and 5736 transitions. [2021-06-05 07:58:35,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-06-05 07:58:35,428 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:35,428 INFO L521 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:35,628 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,90 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:35,628 INFO L430 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:35,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:35,629 INFO L82 PathProgramCache]: Analyzing trace with hash 93978558, now seen corresponding path program 87 times [2021-06-05 07:58:35,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:35,629 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137726670] [2021-06-05 07:58:35,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:35,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:35,771 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:35,771 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:35,771 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137726670] [2021-06-05 07:58:35,771 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137726670] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:35,771 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [496392189] [2021-06-05 07:58:35,771 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:35,827 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-06-05 07:58:35,828 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:58:35,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 20 conjunts are in the unsatisfiable core [2021-06-05 07:58:35,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:35,944 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:35,944 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [496392189] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:35,944 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:35,944 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2021-06-05 07:58:35,944 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899303386] [2021-06-05 07:58:35,944 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 07:58:35,944 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:35,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 07:58:35,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2021-06-05 07:58:35,945 INFO L87 Difference]: Start difference. First operand 2119 states and 5736 transitions. Second operand has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:36,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:36,177 INFO L93 Difference]: Finished difference Result 3646 states and 9047 transitions. [2021-06-05 07:58:36,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-05 07:58:36,177 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-06-05 07:58:36,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:36,180 INFO L225 Difference]: With dead ends: 3646 [2021-06-05 07:58:36,180 INFO L226 Difference]: Without dead ends: 3376 [2021-06-05 07:58:36,180 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 269.8ms TimeCoverageRelationStatistics Valid=334, Invalid=926, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 07:58:36,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3376 states. [2021-06-05 07:58:36,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3376 to 2263. [2021-06-05 07:58:36,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2263 states, 2262 states have (on average 2.720159151193634) internal successors, (6153), 2262 states have internal predecessors, (6153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:36,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2263 states to 2263 states and 6153 transitions. [2021-06-05 07:58:36,202 INFO L78 Accepts]: Start accepts. Automaton has 2263 states and 6153 transitions. Word has length 100 [2021-06-05 07:58:36,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:36,202 INFO L482 AbstractCegarLoop]: Abstraction has 2263 states and 6153 transitions. [2021-06-05 07:58:36,202 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:36,202 INFO L276 IsEmpty]: Start isEmpty. Operand 2263 states and 6153 transitions. [2021-06-05 07:58:36,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-06-05 07:58:36,204 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:36,204 INFO L521 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:36,413 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95,91 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:36,414 INFO L430 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:36,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:36,414 INFO L82 PathProgramCache]: Analyzing trace with hash 903030414, now seen corresponding path program 88 times [2021-06-05 07:58:36,414 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:36,414 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313099946] [2021-06-05 07:58:36,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:36,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:36,559 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:36,559 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:36,559 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313099946] [2021-06-05 07:58:36,559 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313099946] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:36,559 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [467946765] [2021-06-05 07:58:36,559 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:36,628 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 07:58:36,629 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:58:36,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 20 conjunts are in the unsatisfiable core [2021-06-05 07:58:36,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:36,772 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:36,772 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [467946765] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:36,772 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:36,772 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20 [2021-06-05 07:58:36,773 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406977184] [2021-06-05 07:58:36,773 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 07:58:36,773 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:36,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 07:58:36,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2021-06-05 07:58:36,773 INFO L87 Difference]: Start difference. First operand 2263 states and 6153 transitions. Second operand has 20 states, 20 states have (on average 5.1) internal successors, (102), 20 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:37,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:37,073 INFO L93 Difference]: Finished difference Result 3606 states and 9042 transitions. [2021-06-05 07:58:37,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-05 07:58:37,073 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.1) internal successors, (102), 20 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-06-05 07:58:37,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:37,077 INFO L225 Difference]: With dead ends: 3606 [2021-06-05 07:58:37,078 INFO L226 Difference]: Without dead ends: 3336 [2021-06-05 07:58:37,078 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 328.6ms TimeCoverageRelationStatistics Valid=389, Invalid=1171, Unknown=0, NotChecked=0, Total=1560 [2021-06-05 07:58:37,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3336 states. [2021-06-05 07:58:37,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3336 to 2338. [2021-06-05 07:58:37,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2338 states, 2337 states have (on average 2.729139922978177) internal successors, (6378), 2337 states have internal predecessors, (6378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:37,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2338 states to 2338 states and 6378 transitions. [2021-06-05 07:58:37,112 INFO L78 Accepts]: Start accepts. Automaton has 2338 states and 6378 transitions. Word has length 100 [2021-06-05 07:58:37,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:37,112 INFO L482 AbstractCegarLoop]: Abstraction has 2338 states and 6378 transitions. [2021-06-05 07:58:37,112 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 5.1) internal successors, (102), 20 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:37,112 INFO L276 IsEmpty]: Start isEmpty. Operand 2338 states and 6378 transitions. [2021-06-05 07:58:37,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-06-05 07:58:37,113 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:37,114 INFO L521 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:37,314 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 92 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable96 [2021-06-05 07:58:37,314 INFO L430 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:37,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:37,314 INFO L82 PathProgramCache]: Analyzing trace with hash -488919684, now seen corresponding path program 89 times [2021-06-05 07:58:37,315 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:37,315 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649538465] [2021-06-05 07:58:37,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:37,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:37,448 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:37,448 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:37,448 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649538465] [2021-06-05 07:58:37,448 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649538465] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:37,448 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1005328244] [2021-06-05 07:58:37,448 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:37,520 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2021-06-05 07:58:37,520 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:58:37,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 20 conjunts are in the unsatisfiable core [2021-06-05 07:58:37,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:37,631 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:37,631 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1005328244] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:37,631 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:37,631 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2021-06-05 07:58:37,631 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315136804] [2021-06-05 07:58:37,632 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 07:58:37,632 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:37,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 07:58:37,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2021-06-05 07:58:37,632 INFO L87 Difference]: Start difference. First operand 2338 states and 6378 transitions. Second operand has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:37,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:37,899 INFO L93 Difference]: Finished difference Result 3656 states and 9217 transitions. [2021-06-05 07:58:37,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-05 07:58:37,899 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-06-05 07:58:37,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:37,903 INFO L225 Difference]: With dead ends: 3656 [2021-06-05 07:58:37,903 INFO L226 Difference]: Without dead ends: 3386 [2021-06-05 07:58:37,903 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 281.7ms TimeCoverageRelationStatistics Valid=345, Invalid=1061, Unknown=0, NotChecked=0, Total=1406 [2021-06-05 07:58:37,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3386 states. [2021-06-05 07:58:37,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3386 to 2413. [2021-06-05 07:58:37,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2413 states, 2412 states have (on average 2.737562189054726) internal successors, (6603), 2412 states have internal predecessors, (6603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:37,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2413 states to 2413 states and 6603 transitions. [2021-06-05 07:58:37,929 INFO L78 Accepts]: Start accepts. Automaton has 2413 states and 6603 transitions. Word has length 100 [2021-06-05 07:58:37,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:37,929 INFO L482 AbstractCegarLoop]: Abstraction has 2413 states and 6603 transitions. [2021-06-05 07:58:37,929 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:37,929 INFO L276 IsEmpty]: Start isEmpty. Operand 2413 states and 6603 transitions. [2021-06-05 07:58:37,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-06-05 07:58:37,931 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:37,931 INFO L521 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:38,131 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97,93 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:38,131 INFO L430 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:38,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:38,132 INFO L82 PathProgramCache]: Analyzing trace with hash -733996980, now seen corresponding path program 90 times [2021-06-05 07:58:38,132 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:38,132 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415129557] [2021-06-05 07:58:38,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:38,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:38,270 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:38,270 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:38,270 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415129557] [2021-06-05 07:58:38,270 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415129557] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:38,270 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1608932945] [2021-06-05 07:58:38,270 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:38,329 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2021-06-05 07:58:38,330 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:58:38,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 20 conjunts are in the unsatisfiable core [2021-06-05 07:58:38,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:38,454 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:38,454 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1608932945] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:38,454 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:38,454 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20 [2021-06-05 07:58:38,454 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633102530] [2021-06-05 07:58:38,455 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 07:58:38,455 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:38,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 07:58:38,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2021-06-05 07:58:38,455 INFO L87 Difference]: Start difference. First operand 2413 states and 6603 transitions. Second operand has 20 states, 20 states have (on average 5.1) internal successors, (102), 20 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:38,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:38,805 INFO L93 Difference]: Finished difference Result 3681 states and 9342 transitions. [2021-06-05 07:58:38,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-05 07:58:38,805 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.1) internal successors, (102), 20 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-06-05 07:58:38,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:38,808 INFO L225 Difference]: With dead ends: 3681 [2021-06-05 07:58:38,808 INFO L226 Difference]: Without dead ends: 3411 [2021-06-05 07:58:38,808 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 316 ImplicationChecksByTransitivity, 365.4ms TimeCoverageRelationStatistics Valid=408, Invalid=1314, Unknown=0, NotChecked=0, Total=1722 [2021-06-05 07:58:38,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3411 states. [2021-06-05 07:58:38,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3411 to 2488. [2021-06-05 07:58:38,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2488 states, 2487 states have (on average 2.7454764776839564) internal successors, (6828), 2487 states have internal predecessors, (6828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:38,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2488 states to 2488 states and 6828 transitions. [2021-06-05 07:58:38,833 INFO L78 Accepts]: Start accepts. Automaton has 2488 states and 6828 transitions. Word has length 100 [2021-06-05 07:58:38,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:38,833 INFO L482 AbstractCegarLoop]: Abstraction has 2488 states and 6828 transitions. [2021-06-05 07:58:38,833 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 5.1) internal successors, (102), 20 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:38,834 INFO L276 IsEmpty]: Start isEmpty. Operand 2488 states and 6828 transitions. [2021-06-05 07:58:38,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-06-05 07:58:38,835 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:38,835 INFO L521 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:39,036 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 94 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable98 [2021-06-05 07:58:39,036 INFO L430 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:39,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:39,036 INFO L82 PathProgramCache]: Analyzing trace with hash -1110847302, now seen corresponding path program 91 times [2021-06-05 07:58:39,036 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:39,036 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692452123] [2021-06-05 07:58:39,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:39,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:39,160 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:39,160 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:39,160 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692452123] [2021-06-05 07:58:39,160 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692452123] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:39,161 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [400619321] [2021-06-05 07:58:39,161 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:39,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:39,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 20 conjunts are in the unsatisfiable core [2021-06-05 07:58:39,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:39,336 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:39,337 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [400619321] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:39,337 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:39,337 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2021-06-05 07:58:39,337 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760647827] [2021-06-05 07:58:39,337 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 07:58:39,337 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:39,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 07:58:39,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2021-06-05 07:58:39,338 INFO L87 Difference]: Start difference. First operand 2488 states and 6828 transitions. Second operand has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:39,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:39,640 INFO L93 Difference]: Finished difference Result 3706 states and 9467 transitions. [2021-06-05 07:58:39,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-05 07:58:39,641 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-06-05 07:58:39,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:39,645 INFO L225 Difference]: With dead ends: 3706 [2021-06-05 07:58:39,645 INFO L226 Difference]: Without dead ends: 3436 [2021-06-05 07:58:39,645 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 306 ImplicationChecksByTransitivity, 295.4ms TimeCoverageRelationStatistics Valid=372, Invalid=1188, Unknown=0, NotChecked=0, Total=1560 [2021-06-05 07:58:39,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3436 states. [2021-06-05 07:58:39,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3436 to 2563. [2021-06-05 07:58:39,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2563 states, 2562 states have (on average 2.752927400468384) internal successors, (7053), 2562 states have internal predecessors, (7053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:39,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2563 states to 2563 states and 7053 transitions. [2021-06-05 07:58:39,675 INFO L78 Accepts]: Start accepts. Automaton has 2563 states and 7053 transitions. Word has length 100 [2021-06-05 07:58:39,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:39,675 INFO L482 AbstractCegarLoop]: Abstraction has 2563 states and 7053 transitions. [2021-06-05 07:58:39,675 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:39,675 INFO L276 IsEmpty]: Start isEmpty. Operand 2563 states and 7053 transitions. [2021-06-05 07:58:39,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-06-05 07:58:39,677 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:39,677 INFO L521 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:39,877 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99,95 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:39,877 INFO L430 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:39,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:39,878 INFO L82 PathProgramCache]: Analyzing trace with hash 215908234, now seen corresponding path program 92 times [2021-06-05 07:58:39,878 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:39,878 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352477871] [2021-06-05 07:58:39,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:39,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:40,009 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:40,009 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:40,009 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352477871] [2021-06-05 07:58:40,009 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352477871] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:40,009 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [385755887] [2021-06-05 07:58:40,009 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:40,062 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 07:58:40,062 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:58:40,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 20 conjunts are in the unsatisfiable core [2021-06-05 07:58:40,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:40,182 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:40,182 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [385755887] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:40,182 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:40,183 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20 [2021-06-05 07:58:40,183 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912835078] [2021-06-05 07:58:40,183 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 07:58:40,183 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:40,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 07:58:40,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2021-06-05 07:58:40,183 INFO L87 Difference]: Start difference. First operand 2563 states and 7053 transitions. Second operand has 20 states, 20 states have (on average 5.1) internal successors, (102), 20 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:40,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:40,575 INFO L93 Difference]: Finished difference Result 3731 states and 9592 transitions. [2021-06-05 07:58:40,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-06-05 07:58:40,576 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.1) internal successors, (102), 20 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-06-05 07:58:40,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:40,579 INFO L225 Difference]: With dead ends: 3731 [2021-06-05 07:58:40,579 INFO L226 Difference]: Without dead ends: 3461 [2021-06-05 07:58:40,579 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 373 ImplicationChecksByTransitivity, 384.8ms TimeCoverageRelationStatistics Valid=443, Invalid=1449, Unknown=0, NotChecked=0, Total=1892 [2021-06-05 07:58:40,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3461 states. [2021-06-05 07:58:40,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3461 to 2638. [2021-06-05 07:58:40,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2638 states, 2637 states have (on average 2.7599544937428897) internal successors, (7278), 2637 states have internal predecessors, (7278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:40,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2638 states to 2638 states and 7278 transitions. [2021-06-05 07:58:40,607 INFO L78 Accepts]: Start accepts. Automaton has 2638 states and 7278 transitions. Word has length 100 [2021-06-05 07:58:40,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:40,607 INFO L482 AbstractCegarLoop]: Abstraction has 2638 states and 7278 transitions. [2021-06-05 07:58:40,607 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 5.1) internal successors, (102), 20 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:40,607 INFO L276 IsEmpty]: Start isEmpty. Operand 2638 states and 7278 transitions. [2021-06-05 07:58:40,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-06-05 07:58:40,609 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:40,609 INFO L521 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:40,812 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 96 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable100 [2021-06-05 07:58:40,813 INFO L430 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:40,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:40,813 INFO L82 PathProgramCache]: Analyzing trace with hash 670124408, now seen corresponding path program 93 times [2021-06-05 07:58:40,813 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:40,813 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729933183] [2021-06-05 07:58:40,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:40,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:40,949 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:40,949 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:40,949 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729933183] [2021-06-05 07:58:40,949 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729933183] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:40,950 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1405365863] [2021-06-05 07:58:40,950 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:41,005 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-06-05 07:58:41,006 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:58:41,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 20 conjunts are in the unsatisfiable core [2021-06-05 07:58:41,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:41,113 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:41,114 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1405365863] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:41,114 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:41,114 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2021-06-05 07:58:41,114 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568915332] [2021-06-05 07:58:41,114 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 07:58:41,114 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:41,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 07:58:41,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2021-06-05 07:58:41,115 INFO L87 Difference]: Start difference. First operand 2638 states and 7278 transitions. Second operand has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:41,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:41,450 INFO L93 Difference]: Finished difference Result 3756 states and 9717 transitions. [2021-06-05 07:58:41,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-05 07:58:41,450 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-06-05 07:58:41,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:41,453 INFO L225 Difference]: With dead ends: 3756 [2021-06-05 07:58:41,453 INFO L226 Difference]: Without dead ends: 3486 [2021-06-05 07:58:41,454 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 339.4ms TimeCoverageRelationStatistics Valid=415, Invalid=1307, Unknown=0, NotChecked=0, Total=1722 [2021-06-05 07:58:41,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3486 states. [2021-06-05 07:58:41,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3486 to 2713. [2021-06-05 07:58:41,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2713 states, 2712 states have (on average 2.7665929203539825) internal successors, (7503), 2712 states have internal predecessors, (7503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:41,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2713 states to 2713 states and 7503 transitions. [2021-06-05 07:58:41,485 INFO L78 Accepts]: Start accepts. Automaton has 2713 states and 7503 transitions. Word has length 100 [2021-06-05 07:58:41,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:41,485 INFO L482 AbstractCegarLoop]: Abstraction has 2713 states and 7503 transitions. [2021-06-05 07:58:41,485 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:41,486 INFO L276 IsEmpty]: Start isEmpty. Operand 2713 states and 7503 transitions. [2021-06-05 07:58:41,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-06-05 07:58:41,488 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:41,488 INFO L521 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:41,688 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable101 [2021-06-05 07:58:41,688 INFO L430 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:41,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:41,689 INFO L82 PathProgramCache]: Analyzing trace with hash 1669020744, now seen corresponding path program 94 times [2021-06-05 07:58:41,689 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:41,689 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810292495] [2021-06-05 07:58:41,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:41,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:41,808 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:41,808 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:41,808 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810292495] [2021-06-05 07:58:41,808 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810292495] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:41,808 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1761837947] [2021-06-05 07:58:41,808 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:41,859 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 07:58:41,859 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:58:41,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 20 conjunts are in the unsatisfiable core [2021-06-05 07:58:41,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:41,995 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:41,995 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1761837947] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:41,995 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:41,995 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20 [2021-06-05 07:58:41,995 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087879824] [2021-06-05 07:58:41,996 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 07:58:41,996 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:41,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 07:58:41,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2021-06-05 07:58:41,996 INFO L87 Difference]: Start difference. First operand 2713 states and 7503 transitions. Second operand has 20 states, 20 states have (on average 5.1) internal successors, (102), 20 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:42,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:42,478 INFO L93 Difference]: Finished difference Result 3781 states and 9842 transitions. [2021-06-05 07:58:42,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-06-05 07:58:42,479 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.1) internal successors, (102), 20 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-06-05 07:58:42,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:42,482 INFO L225 Difference]: With dead ends: 3781 [2021-06-05 07:58:42,482 INFO L226 Difference]: Without dead ends: 3511 [2021-06-05 07:58:42,482 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 434 ImplicationChecksByTransitivity, 455.3ms TimeCoverageRelationStatistics Valid=494, Invalid=1576, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 07:58:42,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3511 states. [2021-06-05 07:58:42,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3511 to 2788. [2021-06-05 07:58:42,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2788 states, 2787 states have (on average 2.772874058127018) internal successors, (7728), 2787 states have internal predecessors, (7728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:42,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2788 states to 2788 states and 7728 transitions. [2021-06-05 07:58:42,512 INFO L78 Accepts]: Start accepts. Automaton has 2788 states and 7728 transitions. Word has length 100 [2021-06-05 07:58:42,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:42,513 INFO L482 AbstractCegarLoop]: Abstraction has 2788 states and 7728 transitions. [2021-06-05 07:58:42,513 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 5.1) internal successors, (102), 20 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:42,513 INFO L276 IsEmpty]: Start isEmpty. Operand 2788 states and 7728 transitions. [2021-06-05 07:58:42,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-06-05 07:58:42,515 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:42,515 INFO L521 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:42,715 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 98 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2021-06-05 07:58:42,715 INFO L430 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:42,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:42,716 INFO L82 PathProgramCache]: Analyzing trace with hash -210307146, now seen corresponding path program 95 times [2021-06-05 07:58:42,716 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:42,716 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590308805] [2021-06-05 07:58:42,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:42,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:42,830 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:42,830 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:42,830 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590308805] [2021-06-05 07:58:42,831 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590308805] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:42,831 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1082751670] [2021-06-05 07:58:42,831 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:42,883 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2021-06-05 07:58:42,883 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:58:42,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 20 conjunts are in the unsatisfiable core [2021-06-05 07:58:42,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:42,997 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:42,997 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1082751670] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:42,997 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:42,997 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2021-06-05 07:58:42,997 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378203016] [2021-06-05 07:58:42,998 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 07:58:42,998 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:42,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 07:58:42,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2021-06-05 07:58:42,998 INFO L87 Difference]: Start difference. First operand 2788 states and 7728 transitions. Second operand has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:43,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:43,395 INFO L93 Difference]: Finished difference Result 3806 states and 9967 transitions. [2021-06-05 07:58:43,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-06-05 07:58:43,396 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-06-05 07:58:43,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:43,399 INFO L225 Difference]: With dead ends: 3806 [2021-06-05 07:58:43,399 INFO L226 Difference]: Without dead ends: 3536 [2021-06-05 07:58:43,400 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 418 ImplicationChecksByTransitivity, 364.4ms TimeCoverageRelationStatistics Valid=474, Invalid=1418, Unknown=0, NotChecked=0, Total=1892 [2021-06-05 07:58:43,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3536 states. [2021-06-05 07:58:43,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3536 to 2863. [2021-06-05 07:58:43,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2863 states, 2862 states have (on average 2.7788259958071277) internal successors, (7953), 2862 states have internal predecessors, (7953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:43,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2863 states to 2863 states and 7953 transitions. [2021-06-05 07:58:43,433 INFO L78 Accepts]: Start accepts. Automaton has 2863 states and 7953 transitions. Word has length 100 [2021-06-05 07:58:43,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:43,433 INFO L482 AbstractCegarLoop]: Abstraction has 2863 states and 7953 transitions. [2021-06-05 07:58:43,433 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:43,433 INFO L276 IsEmpty]: Start isEmpty. Operand 2863 states and 7953 transitions. [2021-06-05 07:58:43,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-06-05 07:58:43,435 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:43,435 INFO L521 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:43,635 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103,99 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:43,635 INFO L430 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:43,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:43,636 INFO L82 PathProgramCache]: Analyzing trace with hash 1820012166, now seen corresponding path program 96 times [2021-06-05 07:58:43,636 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:43,636 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005772305] [2021-06-05 07:58:43,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:43,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:43,771 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:43,771 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:43,771 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005772305] [2021-06-05 07:58:43,771 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005772305] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:43,771 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1213873646] [2021-06-05 07:58:43,771 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:43,827 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2021-06-05 07:58:43,827 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:58:43,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 20 conjunts are in the unsatisfiable core [2021-06-05 07:58:43,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:43,941 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:43,941 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1213873646] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:43,942 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:43,942 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20 [2021-06-05 07:58:43,942 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742263461] [2021-06-05 07:58:43,942 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 07:58:43,942 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:43,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 07:58:43,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2021-06-05 07:58:43,942 INFO L87 Difference]: Start difference. First operand 2863 states and 7953 transitions. Second operand has 20 states, 20 states have (on average 5.1) internal successors, (102), 20 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:44,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:44,431 INFO L93 Difference]: Finished difference Result 3831 states and 10092 transitions. [2021-06-05 07:58:44,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-06-05 07:58:44,431 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.1) internal successors, (102), 20 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-06-05 07:58:44,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:44,434 INFO L225 Difference]: With dead ends: 3831 [2021-06-05 07:58:44,434 INFO L226 Difference]: Without dead ends: 3561 [2021-06-05 07:58:44,435 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 499 ImplicationChecksByTransitivity, 460.8ms TimeCoverageRelationStatistics Valid=561, Invalid=1695, Unknown=0, NotChecked=0, Total=2256 [2021-06-05 07:58:44,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3561 states. [2021-06-05 07:58:44,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3561 to 2938. [2021-06-05 07:58:44,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2938 states, 2937 states have (on average 2.7844739530132787) internal successors, (8178), 2937 states have internal predecessors, (8178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:44,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2938 states to 2938 states and 8178 transitions. [2021-06-05 07:58:44,466 INFO L78 Accepts]: Start accepts. Automaton has 2938 states and 8178 transitions. Word has length 100 [2021-06-05 07:58:44,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:44,466 INFO L482 AbstractCegarLoop]: Abstraction has 2938 states and 8178 transitions. [2021-06-05 07:58:44,467 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 5.1) internal successors, (102), 20 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:44,467 INFO L276 IsEmpty]: Start isEmpty. Operand 2938 states and 8178 transitions. [2021-06-05 07:58:44,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-06-05 07:58:44,469 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:44,469 INFO L521 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:44,669 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 100 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable104 [2021-06-05 07:58:44,669 INFO L430 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:44,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:44,669 INFO L82 PathProgramCache]: Analyzing trace with hash -1860715660, now seen corresponding path program 97 times [2021-06-05 07:58:44,670 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:44,670 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387174217] [2021-06-05 07:58:44,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:44,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:44,776 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:44,777 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:44,777 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387174217] [2021-06-05 07:58:44,777 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387174217] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:44,777 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1962603998] [2021-06-05 07:58:44,777 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:44,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:44,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 20 conjunts are in the unsatisfiable core [2021-06-05 07:58:44,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:44,939 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:44,939 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1962603998] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:44,939 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:44,940 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2021-06-05 07:58:44,940 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206165699] [2021-06-05 07:58:44,940 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 07:58:44,940 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:44,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 07:58:44,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2021-06-05 07:58:44,940 INFO L87 Difference]: Start difference. First operand 2938 states and 8178 transitions. Second operand has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:45,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:45,343 INFO L93 Difference]: Finished difference Result 3856 states and 10217 transitions. [2021-06-05 07:58:45,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-06-05 07:58:45,343 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-06-05 07:58:45,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:45,346 INFO L225 Difference]: With dead ends: 3856 [2021-06-05 07:58:45,347 INFO L226 Difference]: Without dead ends: 3586 [2021-06-05 07:58:45,347 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 480 ImplicationChecksByTransitivity, 369.4ms TimeCoverageRelationStatistics Valid=549, Invalid=1521, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 07:58:45,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3586 states. [2021-06-05 07:58:45,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3586 to 3013. [2021-06-05 07:58:45,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3013 states, 3012 states have (on average 2.789840637450199) internal successors, (8403), 3012 states have internal predecessors, (8403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:45,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3013 states to 3013 states and 8403 transitions. [2021-06-05 07:58:45,378 INFO L78 Accepts]: Start accepts. Automaton has 3013 states and 8403 transitions. Word has length 100 [2021-06-05 07:58:45,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:45,378 INFO L482 AbstractCegarLoop]: Abstraction has 3013 states and 8403 transitions. [2021-06-05 07:58:45,378 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:45,378 INFO L276 IsEmpty]: Start isEmpty. Operand 3013 states and 8403 transitions. [2021-06-05 07:58:45,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-06-05 07:58:45,380 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:45,380 INFO L521 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:45,584 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105,101 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:45,584 INFO L430 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:45,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:45,584 INFO L82 PathProgramCache]: Analyzing trace with hash 719009348, now seen corresponding path program 98 times [2021-06-05 07:58:45,584 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:45,585 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975514229] [2021-06-05 07:58:45,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:45,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:45,705 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:45,706 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:45,706 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975514229] [2021-06-05 07:58:45,706 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975514229] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:45,706 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [567491766] [2021-06-05 07:58:45,706 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:45,757 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 07:58:45,757 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:58:45,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 20 conjunts are in the unsatisfiable core [2021-06-05 07:58:45,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:45,870 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:45,870 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [567491766] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:45,870 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:45,870 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20 [2021-06-05 07:58:45,870 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215705355] [2021-06-05 07:58:45,871 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 07:58:45,871 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:45,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 07:58:45,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2021-06-05 07:58:45,871 INFO L87 Difference]: Start difference. First operand 3013 states and 8403 transitions. Second operand has 20 states, 20 states have (on average 5.1) internal successors, (102), 20 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:46,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:46,403 INFO L93 Difference]: Finished difference Result 3941 states and 10507 transitions. [2021-06-05 07:58:46,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-06-05 07:58:46,403 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.1) internal successors, (102), 20 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-06-05 07:58:46,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:46,407 INFO L225 Difference]: With dead ends: 3941 [2021-06-05 07:58:46,407 INFO L226 Difference]: Without dead ends: 3671 [2021-06-05 07:58:46,407 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 568 ImplicationChecksByTransitivity, 494.6ms TimeCoverageRelationStatistics Valid=644, Invalid=1806, Unknown=0, NotChecked=0, Total=2450 [2021-06-05 07:58:46,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3671 states. [2021-06-05 07:58:46,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3671 to 3088. [2021-06-05 07:58:46,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3088 states, 3087 states have (on average 2.801425332037577) internal successors, (8648), 3087 states have internal predecessors, (8648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:46,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3088 states to 3088 states and 8648 transitions. [2021-06-05 07:58:46,441 INFO L78 Accepts]: Start accepts. Automaton has 3088 states and 8648 transitions. Word has length 100 [2021-06-05 07:58:46,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:46,441 INFO L482 AbstractCegarLoop]: Abstraction has 3088 states and 8648 transitions. [2021-06-05 07:58:46,441 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 5.1) internal successors, (102), 20 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:46,441 INFO L276 IsEmpty]: Start isEmpty. Operand 3088 states and 8648 transitions. [2021-06-05 07:58:46,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-06-05 07:58:46,443 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:46,443 INFO L521 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:46,644 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 102 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable106 [2021-06-05 07:58:46,645 INFO L430 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:46,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:46,645 INFO L82 PathProgramCache]: Analyzing trace with hash -313638254, now seen corresponding path program 99 times [2021-06-05 07:58:46,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:46,645 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134056351] [2021-06-05 07:58:46,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:46,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:46,753 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:46,753 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:46,753 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134056351] [2021-06-05 07:58:46,753 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134056351] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:46,753 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [590184157] [2021-06-05 07:58:46,753 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:46,810 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-06-05 07:58:46,810 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:58:46,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 20 conjunts are in the unsatisfiable core [2021-06-05 07:58:46,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:46,913 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:46,913 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [590184157] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:46,913 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:46,913 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2021-06-05 07:58:46,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256306010] [2021-06-05 07:58:46,913 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 07:58:46,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:46,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 07:58:46,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2021-06-05 07:58:46,914 INFO L87 Difference]: Start difference. First operand 3088 states and 8648 transitions. Second operand has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:47,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:47,349 INFO L93 Difference]: Finished difference Result 4708 states and 12681 transitions. [2021-06-05 07:58:47,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-05 07:58:47,350 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-06-05 07:58:47,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:47,353 INFO L225 Difference]: With dead ends: 4708 [2021-06-05 07:58:47,353 INFO L226 Difference]: Without dead ends: 4438 [2021-06-05 07:58:47,353 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 545 ImplicationChecksByTransitivity, 383.6ms TimeCoverageRelationStatistics Valid=641, Invalid=1615, Unknown=0, NotChecked=0, Total=2256 [2021-06-05 07:58:47,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4438 states. [2021-06-05 07:58:47,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4438 to 3268. [2021-06-05 07:58:47,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3268 states, 3267 states have (on average 2.8181818181818183) internal successors, (9207), 3267 states have internal predecessors, (9207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:47,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3268 states to 3268 states and 9207 transitions. [2021-06-05 07:58:47,388 INFO L78 Accepts]: Start accepts. Automaton has 3268 states and 9207 transitions. Word has length 100 [2021-06-05 07:58:47,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:47,388 INFO L482 AbstractCegarLoop]: Abstraction has 3268 states and 9207 transitions. [2021-06-05 07:58:47,388 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:47,388 INFO L276 IsEmpty]: Start isEmpty. Operand 3268 states and 9207 transitions. [2021-06-05 07:58:47,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-06-05 07:58:47,390 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:47,390 INFO L521 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:47,591 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107,103 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:47,591 INFO L430 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:47,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:47,591 INFO L82 PathProgramCache]: Analyzing trace with hash -291295004, now seen corresponding path program 100 times [2021-06-05 07:58:47,591 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:47,591 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924131813] [2021-06-05 07:58:47,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:47,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:47,699 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:47,699 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:47,699 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924131813] [2021-06-05 07:58:47,699 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924131813] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:47,699 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2065761055] [2021-06-05 07:58:47,699 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:47,751 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 07:58:47,751 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:58:47,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 20 conjunts are in the unsatisfiable core [2021-06-05 07:58:47,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:47,879 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:47,879 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2065761055] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:47,879 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:47,879 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2021-06-05 07:58:47,879 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999820583] [2021-06-05 07:58:47,879 INFO L462 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-06-05 07:58:47,879 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:47,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-06-05 07:58:47,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2021-06-05 07:58:47,880 INFO L87 Difference]: Start difference. First operand 3268 states and 9207 transitions. Second operand has 21 states, 21 states have (on average 4.904761904761905) internal successors, (103), 21 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:48,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:48,497 INFO L93 Difference]: Finished difference Result 4651 states and 12541 transitions. [2021-06-05 07:58:48,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-05 07:58:48,498 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.904761904761905) internal successors, (103), 21 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-06-05 07:58:48,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:48,501 INFO L225 Difference]: With dead ends: 4651 [2021-06-05 07:58:48,502 INFO L226 Difference]: Without dead ends: 4076 [2021-06-05 07:58:48,502 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 770 ImplicationChecksByTransitivity, 568.4ms TimeCoverageRelationStatistics Valid=804, Invalid=2276, Unknown=0, NotChecked=0, Total=3080 [2021-06-05 07:58:48,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4076 states. [2021-06-05 07:58:48,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4076 to 3303. [2021-06-05 07:58:48,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3303 states, 3302 states have (on average 2.811326468806784) internal successors, (9283), 3302 states have internal predecessors, (9283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:48,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3303 states to 3303 states and 9283 transitions. [2021-06-05 07:58:48,533 INFO L78 Accepts]: Start accepts. Automaton has 3303 states and 9283 transitions. Word has length 100 [2021-06-05 07:58:48,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:48,533 INFO L482 AbstractCegarLoop]: Abstraction has 3303 states and 9283 transitions. [2021-06-05 07:58:48,533 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 4.904761904761905) internal successors, (103), 21 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:48,533 INFO L276 IsEmpty]: Start isEmpty. Operand 3303 states and 9283 transitions. [2021-06-05 07:58:48,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-06-05 07:58:48,535 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:48,535 INFO L521 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:48,735 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108,104 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:48,736 INFO L430 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:48,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:48,736 INFO L82 PathProgramCache]: Analyzing trace with hash -1356878341, now seen corresponding path program 101 times [2021-06-05 07:58:48,736 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:48,736 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544088571] [2021-06-05 07:58:48,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:48,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:48,884 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:48,884 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:48,884 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544088571] [2021-06-05 07:58:48,884 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544088571] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:48,884 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1998312151] [2021-06-05 07:58:48,884 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:48,936 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2021-06-05 07:58:48,937 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:58:48,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 21 conjunts are in the unsatisfiable core [2021-06-05 07:58:48,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:49,066 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:49,067 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1998312151] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:49,067 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:49,067 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2021-06-05 07:58:49,067 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245632944] [2021-06-05 07:58:49,067 INFO L462 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-06-05 07:58:49,067 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:49,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-06-05 07:58:49,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2021-06-05 07:58:49,068 INFO L87 Difference]: Start difference. First operand 3303 states and 9283 transitions. Second operand has 21 states, 21 states have (on average 5.095238095238095) internal successors, (107), 21 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:49,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:49,351 INFO L93 Difference]: Finished difference Result 4346 states and 11497 transitions. [2021-06-05 07:58:49,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-05 07:58:49,351 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.095238095238095) internal successors, (107), 21 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-06-05 07:58:49,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:49,355 INFO L225 Difference]: With dead ends: 4346 [2021-06-05 07:58:49,355 INFO L226 Difference]: Without dead ends: 4076 [2021-06-05 07:58:49,355 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 316.0ms TimeCoverageRelationStatistics Valid=416, Invalid=1224, Unknown=0, NotChecked=0, Total=1640 [2021-06-05 07:58:49,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4076 states. [2021-06-05 07:58:49,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4076 to 3303. [2021-06-05 07:58:49,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3303 states, 3302 states have (on average 2.811326468806784) internal successors, (9283), 3302 states have internal predecessors, (9283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:49,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3303 states to 3303 states and 9283 transitions. [2021-06-05 07:58:49,402 INFO L78 Accepts]: Start accepts. Automaton has 3303 states and 9283 transitions. Word has length 105 [2021-06-05 07:58:49,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:49,402 INFO L482 AbstractCegarLoop]: Abstraction has 3303 states and 9283 transitions. [2021-06-05 07:58:49,402 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 5.095238095238095) internal successors, (107), 21 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:49,402 INFO L276 IsEmpty]: Start isEmpty. Operand 3303 states and 9283 transitions. [2021-06-05 07:58:49,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-06-05 07:58:49,404 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:49,404 INFO L521 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:49,604 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 105 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable109 [2021-06-05 07:58:49,605 INFO L430 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:49,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:49,605 INFO L82 PathProgramCache]: Analyzing trace with hash -547826485, now seen corresponding path program 102 times [2021-06-05 07:58:49,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:49,605 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371505078] [2021-06-05 07:58:49,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:49,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:49,763 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:49,763 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:49,763 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371505078] [2021-06-05 07:58:49,763 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371505078] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:49,763 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [258001167] [2021-06-05 07:58:49,763 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:49,821 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2021-06-05 07:58:49,821 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:58:49,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 21 conjunts are in the unsatisfiable core [2021-06-05 07:58:49,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:49,971 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:49,971 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [258001167] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:49,971 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:49,971 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 22 [2021-06-05 07:58:49,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140104276] [2021-06-05 07:58:49,972 INFO L462 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-06-05 07:58:49,972 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:49,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-06-05 07:58:49,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=375, Unknown=0, NotChecked=0, Total=462 [2021-06-05 07:58:49,972 INFO L87 Difference]: Start difference. First operand 3303 states and 9283 transitions. Second operand has 22 states, 22 states have (on average 4.954545454545454) internal successors, (109), 22 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:50,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:50,307 INFO L93 Difference]: Finished difference Result 4641 states and 12087 transitions. [2021-06-05 07:58:50,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-05 07:58:50,307 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.954545454545454) internal successors, (109), 22 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-06-05 07:58:50,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:50,311 INFO L225 Difference]: With dead ends: 4641 [2021-06-05 07:58:50,311 INFO L226 Difference]: Without dead ends: 4371 [2021-06-05 07:58:50,311 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 348 ImplicationChecksByTransitivity, 373.3ms TimeCoverageRelationStatistics Valid=465, Invalid=1427, Unknown=0, NotChecked=0, Total=1892 [2021-06-05 07:58:50,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4371 states. [2021-06-05 07:58:50,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4371 to 3303. [2021-06-05 07:58:50,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3303 states, 3302 states have (on average 2.811326468806784) internal successors, (9283), 3302 states have internal predecessors, (9283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:50,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3303 states to 3303 states and 9283 transitions. [2021-06-05 07:58:50,348 INFO L78 Accepts]: Start accepts. Automaton has 3303 states and 9283 transitions. Word has length 105 [2021-06-05 07:58:50,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:50,348 INFO L482 AbstractCegarLoop]: Abstraction has 3303 states and 9283 transitions. [2021-06-05 07:58:50,348 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 4.954545454545454) internal successors, (109), 22 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:50,348 INFO L276 IsEmpty]: Start isEmpty. Operand 3303 states and 9283 transitions. [2021-06-05 07:58:50,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-06-05 07:58:50,350 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:50,351 INFO L521 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:50,559 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110,106 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:50,559 INFO L430 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:50,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:50,560 INFO L82 PathProgramCache]: Analyzing trace with hash -1939776583, now seen corresponding path program 103 times [2021-06-05 07:58:50,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:50,560 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214020375] [2021-06-05 07:58:50,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:50,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:50,698 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:50,698 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:50,699 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214020375] [2021-06-05 07:58:50,699 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214020375] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:50,699 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [302404065] [2021-06-05 07:58:50,699 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:50,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:50,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 21 conjunts are in the unsatisfiable core [2021-06-05 07:58:50,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:50,880 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:50,881 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [302404065] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:50,881 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:50,881 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2021-06-05 07:58:50,881 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001893870] [2021-06-05 07:58:50,881 INFO L462 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-06-05 07:58:50,881 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:50,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-06-05 07:58:50,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=340, Unknown=0, NotChecked=0, Total=420 [2021-06-05 07:58:50,881 INFO L87 Difference]: Start difference. First operand 3303 states and 9283 transitions. Second operand has 21 states, 21 states have (on average 5.095238095238095) internal successors, (107), 21 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:51,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:51,197 INFO L93 Difference]: Finished difference Result 4596 states and 11997 transitions. [2021-06-05 07:58:51,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-05 07:58:51,197 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.095238095238095) internal successors, (107), 21 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-06-05 07:58:51,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:51,202 INFO L225 Difference]: With dead ends: 4596 [2021-06-05 07:58:51,202 INFO L226 Difference]: Without dead ends: 4326 [2021-06-05 07:58:51,202 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 390 ImplicationChecksByTransitivity, 334.7ms TimeCoverageRelationStatistics Valid=467, Invalid=1425, Unknown=0, NotChecked=0, Total=1892 [2021-06-05 07:58:51,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4326 states. [2021-06-05 07:58:51,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4326 to 3303. [2021-06-05 07:58:51,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3303 states, 3302 states have (on average 2.811326468806784) internal successors, (9283), 3302 states have internal predecessors, (9283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:51,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3303 states to 3303 states and 9283 transitions. [2021-06-05 07:58:51,238 INFO L78 Accepts]: Start accepts. Automaton has 3303 states and 9283 transitions. Word has length 105 [2021-06-05 07:58:51,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:51,238 INFO L482 AbstractCegarLoop]: Abstraction has 3303 states and 9283 transitions. [2021-06-05 07:58:51,238 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 5.095238095238095) internal successors, (107), 21 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:51,238 INFO L276 IsEmpty]: Start isEmpty. Operand 3303 states and 9283 transitions. [2021-06-05 07:58:51,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-06-05 07:58:51,240 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:51,240 INFO L521 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:51,441 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111,107 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:51,441 INFO L430 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:51,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:51,441 INFO L82 PathProgramCache]: Analyzing trace with hash 2110113417, now seen corresponding path program 104 times [2021-06-05 07:58:51,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:51,441 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479013755] [2021-06-05 07:58:51,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:51,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:51,603 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:51,603 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:51,603 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479013755] [2021-06-05 07:58:51,603 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479013755] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:51,603 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1913995810] [2021-06-05 07:58:51,603 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 108 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 108 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:51,655 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 07:58:51,655 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:58:51,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 21 conjunts are in the unsatisfiable core [2021-06-05 07:58:51,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:51,798 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:51,798 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1913995810] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:51,798 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:51,798 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 22 [2021-06-05 07:58:51,798 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608311975] [2021-06-05 07:58:51,798 INFO L462 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-06-05 07:58:51,798 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:51,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-06-05 07:58:51,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=384, Unknown=0, NotChecked=0, Total=462 [2021-06-05 07:58:51,799 INFO L87 Difference]: Start difference. First operand 3303 states and 9283 transitions. Second operand has 22 states, 22 states have (on average 4.954545454545454) internal successors, (109), 22 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:52,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:52,175 INFO L93 Difference]: Finished difference Result 4546 states and 11897 transitions. [2021-06-05 07:58:52,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-06-05 07:58:52,176 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.954545454545454) internal successors, (109), 22 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-06-05 07:58:52,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:52,180 INFO L225 Difference]: With dead ends: 4546 [2021-06-05 07:58:52,180 INFO L226 Difference]: Without dead ends: 4276 [2021-06-05 07:58:52,180 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 404 ImplicationChecksByTransitivity, 417.0ms TimeCoverageRelationStatistics Valid=490, Invalid=1580, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 07:58:52,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4276 states. [2021-06-05 07:58:52,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4276 to 3303. [2021-06-05 07:58:52,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3303 states, 3302 states have (on average 2.811326468806784) internal successors, (9283), 3302 states have internal predecessors, (9283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:52,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3303 states to 3303 states and 9283 transitions. [2021-06-05 07:58:52,214 INFO L78 Accepts]: Start accepts. Automaton has 3303 states and 9283 transitions. Word has length 105 [2021-06-05 07:58:52,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:52,215 INFO L482 AbstractCegarLoop]: Abstraction has 3303 states and 9283 transitions. [2021-06-05 07:58:52,215 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 4.954545454545454) internal successors, (109), 22 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:52,215 INFO L276 IsEmpty]: Start isEmpty. Operand 3303 states and 9283 transitions. [2021-06-05 07:58:52,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-06-05 07:58:52,217 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:52,217 INFO L521 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:52,417 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 108 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable112 [2021-06-05 07:58:52,417 INFO L430 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:52,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:52,418 INFO L82 PathProgramCache]: Analyzing trace with hash 1733263095, now seen corresponding path program 105 times [2021-06-05 07:58:52,418 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:52,418 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083736846] [2021-06-05 07:58:52,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:52,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:52,551 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:52,551 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:52,551 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083736846] [2021-06-05 07:58:52,551 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083736846] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:52,551 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [247521126] [2021-06-05 07:58:52,551 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 109 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 109 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:52,609 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-06-05 07:58:52,609 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:58:52,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 21 conjunts are in the unsatisfiable core [2021-06-05 07:58:52,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:52,734 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:52,734 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [247521126] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:52,734 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:52,734 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2021-06-05 07:58:52,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504242607] [2021-06-05 07:58:52,735 INFO L462 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-06-05 07:58:52,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:52,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-06-05 07:58:52,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2021-06-05 07:58:52,735 INFO L87 Difference]: Start difference. First operand 3303 states and 9283 transitions. Second operand has 21 states, 21 states have (on average 5.095238095238095) internal successors, (107), 21 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:53,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:53,085 INFO L93 Difference]: Finished difference Result 4496 states and 11797 transitions. [2021-06-05 07:58:53,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-06-05 07:58:53,085 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.095238095238095) internal successors, (107), 21 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-06-05 07:58:53,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:53,089 INFO L225 Difference]: With dead ends: 4496 [2021-06-05 07:58:53,089 INFO L226 Difference]: Without dead ends: 4226 [2021-06-05 07:58:53,089 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 456 ImplicationChecksByTransitivity, 352.9ms TimeCoverageRelationStatistics Valid=506, Invalid=1564, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 07:58:53,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4226 states. [2021-06-05 07:58:53,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4226 to 3303. [2021-06-05 07:58:53,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3303 states, 3302 states have (on average 2.811326468806784) internal successors, (9283), 3302 states have internal predecessors, (9283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:53,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3303 states to 3303 states and 9283 transitions. [2021-06-05 07:58:53,119 INFO L78 Accepts]: Start accepts. Automaton has 3303 states and 9283 transitions. Word has length 105 [2021-06-05 07:58:53,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:53,119 INFO L482 AbstractCegarLoop]: Abstraction has 3303 states and 9283 transitions. [2021-06-05 07:58:53,119 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 5.095238095238095) internal successors, (107), 21 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:53,119 INFO L276 IsEmpty]: Start isEmpty. Operand 3303 states and 9283 transitions. [2021-06-05 07:58:53,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-06-05 07:58:53,121 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:53,121 INFO L521 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:53,322 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 109 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable113 [2021-06-05 07:58:53,322 INFO L430 AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:53,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:53,322 INFO L82 PathProgramCache]: Analyzing trace with hash -1234948665, now seen corresponding path program 106 times [2021-06-05 07:58:53,322 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:53,322 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874682259] [2021-06-05 07:58:53,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:53,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:53,460 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:53,461 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:53,461 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874682259] [2021-06-05 07:58:53,461 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874682259] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:53,461 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1274302354] [2021-06-05 07:58:53,461 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 110 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 110 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:53,514 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 07:58:53,514 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:58:53,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 21 conjunts are in the unsatisfiable core [2021-06-05 07:58:53,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:53,671 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:53,672 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1274302354] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:53,672 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:53,672 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 22 [2021-06-05 07:58:53,672 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38967221] [2021-06-05 07:58:53,672 INFO L462 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-06-05 07:58:53,672 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:53,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-06-05 07:58:53,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=389, Unknown=0, NotChecked=0, Total=462 [2021-06-05 07:58:53,672 INFO L87 Difference]: Start difference. First operand 3303 states and 9283 transitions. Second operand has 22 states, 22 states have (on average 4.954545454545454) internal successors, (109), 22 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:54,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:54,097 INFO L93 Difference]: Finished difference Result 4446 states and 11697 transitions. [2021-06-05 07:58:54,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-06-05 07:58:54,097 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.954545454545454) internal successors, (109), 22 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-06-05 07:58:54,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:54,101 INFO L225 Difference]: With dead ends: 4446 [2021-06-05 07:58:54,101 INFO L226 Difference]: Without dead ends: 4176 [2021-06-05 07:58:54,101 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 473 ImplicationChecksByTransitivity, 428.8ms TimeCoverageRelationStatistics Valid=531, Invalid=1725, Unknown=0, NotChecked=0, Total=2256 [2021-06-05 07:58:54,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4176 states. [2021-06-05 07:58:54,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4176 to 3303. [2021-06-05 07:58:54,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3303 states, 3302 states have (on average 2.811326468806784) internal successors, (9283), 3302 states have internal predecessors, (9283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:54,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3303 states to 3303 states and 9283 transitions. [2021-06-05 07:58:54,131 INFO L78 Accepts]: Start accepts. Automaton has 3303 states and 9283 transitions. Word has length 105 [2021-06-05 07:58:54,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:54,131 INFO L482 AbstractCegarLoop]: Abstraction has 3303 states and 9283 transitions. [2021-06-05 07:58:54,131 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 4.954545454545454) internal successors, (109), 22 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:54,131 INFO L276 IsEmpty]: Start isEmpty. Operand 3303 states and 9283 transitions. [2021-06-05 07:58:54,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-06-05 07:58:54,134 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:54,134 INFO L521 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:54,334 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 110 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable114 [2021-06-05 07:58:54,334 INFO L430 AbstractCegarLoop]: === Iteration 116 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:54,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:54,334 INFO L82 PathProgramCache]: Analyzing trace with hash -780732491, now seen corresponding path program 107 times [2021-06-05 07:58:54,335 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:54,335 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679426070] [2021-06-05 07:58:54,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:54,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:54,461 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:54,461 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:54,461 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679426070] [2021-06-05 07:58:54,461 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679426070] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:54,461 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [753247761] [2021-06-05 07:58:54,461 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 111 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 111 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:54,516 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2021-06-05 07:58:54,516 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:58:54,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 21 conjunts are in the unsatisfiable core [2021-06-05 07:58:54,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:54,659 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:54,659 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [753247761] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:54,659 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:54,659 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2021-06-05 07:58:54,659 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319860512] [2021-06-05 07:58:54,659 INFO L462 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-06-05 07:58:54,660 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:54,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-06-05 07:58:54,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2021-06-05 07:58:54,660 INFO L87 Difference]: Start difference. First operand 3303 states and 9283 transitions. Second operand has 21 states, 21 states have (on average 5.095238095238095) internal successors, (107), 21 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:55,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:55,042 INFO L93 Difference]: Finished difference Result 4396 states and 11597 transitions. [2021-06-05 07:58:55,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-06-05 07:58:55,042 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.095238095238095) internal successors, (107), 21 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-06-05 07:58:55,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:55,046 INFO L225 Difference]: With dead ends: 4396 [2021-06-05 07:58:55,046 INFO L226 Difference]: Without dead ends: 4126 [2021-06-05 07:58:55,047 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 530 ImplicationChecksByTransitivity, 375.2ms TimeCoverageRelationStatistics Valid=561, Invalid=1695, Unknown=0, NotChecked=0, Total=2256 [2021-06-05 07:58:55,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4126 states. [2021-06-05 07:58:55,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4126 to 3303. [2021-06-05 07:58:55,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3303 states, 3302 states have (on average 2.811326468806784) internal successors, (9283), 3302 states have internal predecessors, (9283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:55,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3303 states to 3303 states and 9283 transitions. [2021-06-05 07:58:55,077 INFO L78 Accepts]: Start accepts. Automaton has 3303 states and 9283 transitions. Word has length 105 [2021-06-05 07:58:55,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:55,077 INFO L482 AbstractCegarLoop]: Abstraction has 3303 states and 9283 transitions. [2021-06-05 07:58:55,077 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 5.095238095238095) internal successors, (107), 21 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:55,077 INFO L276 IsEmpty]: Start isEmpty. Operand 3303 states and 9283 transitions. [2021-06-05 07:58:55,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-06-05 07:58:55,079 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:55,079 INFO L521 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:55,280 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115,111 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:55,280 INFO L430 AbstractCegarLoop]: === Iteration 117 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:55,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:55,281 INFO L82 PathProgramCache]: Analyzing trace with hash 218163845, now seen corresponding path program 108 times [2021-06-05 07:58:55,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:55,281 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140304078] [2021-06-05 07:58:55,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:55,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:55,411 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:55,411 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:55,411 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140304078] [2021-06-05 07:58:55,411 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140304078] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:55,411 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [224751028] [2021-06-05 07:58:55,411 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 112 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 112 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:55,468 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2021-06-05 07:58:55,468 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:58:55,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 21 conjunts are in the unsatisfiable core [2021-06-05 07:58:55,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:55,619 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:55,620 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [224751028] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:55,620 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:55,620 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 22 [2021-06-05 07:58:55,620 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840283627] [2021-06-05 07:58:55,620 INFO L462 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-06-05 07:58:55,620 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:55,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-06-05 07:58:55,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=390, Unknown=0, NotChecked=0, Total=462 [2021-06-05 07:58:55,620 INFO L87 Difference]: Start difference. First operand 3303 states and 9283 transitions. Second operand has 22 states, 22 states have (on average 4.954545454545454) internal successors, (109), 22 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:56,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:56,111 INFO L93 Difference]: Finished difference Result 4346 states and 11497 transitions. [2021-06-05 07:58:56,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-06-05 07:58:56,111 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.954545454545454) internal successors, (109), 22 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-06-05 07:58:56,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:56,116 INFO L225 Difference]: With dead ends: 4346 [2021-06-05 07:58:56,116 INFO L226 Difference]: Without dead ends: 4076 [2021-06-05 07:58:56,116 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 550 ImplicationChecksByTransitivity, 471.6ms TimeCoverageRelationStatistics Valid=588, Invalid=1862, Unknown=0, NotChecked=0, Total=2450 [2021-06-05 07:58:56,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4076 states. [2021-06-05 07:58:56,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4076 to 3303. [2021-06-05 07:58:56,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3303 states, 3302 states have (on average 2.811326468806784) internal successors, (9283), 3302 states have internal predecessors, (9283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:56,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3303 states to 3303 states and 9283 transitions. [2021-06-05 07:58:56,150 INFO L78 Accepts]: Start accepts. Automaton has 3303 states and 9283 transitions. Word has length 105 [2021-06-05 07:58:56,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:56,150 INFO L482 AbstractCegarLoop]: Abstraction has 3303 states and 9283 transitions. [2021-06-05 07:58:56,150 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 4.954545454545454) internal successors, (109), 22 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:56,150 INFO L276 IsEmpty]: Start isEmpty. Operand 3303 states and 9283 transitions. [2021-06-05 07:58:56,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-06-05 07:58:56,152 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:56,152 INFO L521 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:56,352 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 112 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable116 [2021-06-05 07:58:56,353 INFO L430 AbstractCegarLoop]: === Iteration 118 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:56,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:56,353 INFO L82 PathProgramCache]: Analyzing trace with hash -1661164045, now seen corresponding path program 109 times [2021-06-05 07:58:56,353 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:56,353 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092915672] [2021-06-05 07:58:56,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:56,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:56,488 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:56,488 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:56,488 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092915672] [2021-06-05 07:58:56,488 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092915672] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:56,488 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [407217876] [2021-06-05 07:58:56,488 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 113 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 113 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:56,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:56,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 21 conjunts are in the unsatisfiable core [2021-06-05 07:58:56,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:56,677 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:56,677 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [407217876] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:56,677 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:56,677 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2021-06-05 07:58:56,677 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117348918] [2021-06-05 07:58:56,677 INFO L462 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-06-05 07:58:56,677 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:56,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-06-05 07:58:56,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2021-06-05 07:58:56,678 INFO L87 Difference]: Start difference. First operand 3303 states and 9283 transitions. Second operand has 21 states, 21 states have (on average 5.095238095238095) internal successors, (107), 21 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:57,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:57,095 INFO L93 Difference]: Finished difference Result 4296 states and 11397 transitions. [2021-06-05 07:58:57,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-05 07:58:57,095 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.095238095238095) internal successors, (107), 21 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-06-05 07:58:57,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:57,099 INFO L225 Difference]: With dead ends: 4296 [2021-06-05 07:58:57,100 INFO L226 Difference]: Without dead ends: 4026 [2021-06-05 07:58:57,100 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 608 ImplicationChecksByTransitivity, 399.7ms TimeCoverageRelationStatistics Valid=632, Invalid=1818, Unknown=0, NotChecked=0, Total=2450 [2021-06-05 07:58:57,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4026 states. [2021-06-05 07:58:57,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4026 to 3303. [2021-06-05 07:58:57,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3303 states, 3302 states have (on average 2.811326468806784) internal successors, (9283), 3302 states have internal predecessors, (9283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:57,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3303 states to 3303 states and 9283 transitions. [2021-06-05 07:58:57,137 INFO L78 Accepts]: Start accepts. Automaton has 3303 states and 9283 transitions. Word has length 105 [2021-06-05 07:58:57,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:57,137 INFO L482 AbstractCegarLoop]: Abstraction has 3303 states and 9283 transitions. [2021-06-05 07:58:57,137 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 5.095238095238095) internal successors, (107), 21 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:57,137 INFO L276 IsEmpty]: Start isEmpty. Operand 3303 states and 9283 transitions. [2021-06-05 07:58:57,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-06-05 07:58:57,139 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:57,140 INFO L521 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:57,340 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 113 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable117 [2021-06-05 07:58:57,340 INFO L430 AbstractCegarLoop]: === Iteration 119 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:57,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:57,340 INFO L82 PathProgramCache]: Analyzing trace with hash 369155267, now seen corresponding path program 110 times [2021-06-05 07:58:57,340 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:57,340 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642453198] [2021-06-05 07:58:57,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:57,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:57,463 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:57,464 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:57,464 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642453198] [2021-06-05 07:58:57,464 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642453198] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:57,464 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [162547269] [2021-06-05 07:58:57,464 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 114 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 114 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:57,519 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 07:58:57,519 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:58:57,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 21 conjunts are in the unsatisfiable core [2021-06-05 07:58:57,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:57,668 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:57,668 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [162547269] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:57,668 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:57,668 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 22 [2021-06-05 07:58:57,668 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367426350] [2021-06-05 07:58:57,669 INFO L462 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-06-05 07:58:57,669 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:57,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-06-05 07:58:57,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=387, Unknown=0, NotChecked=0, Total=462 [2021-06-05 07:58:57,669 INFO L87 Difference]: Start difference. First operand 3303 states and 9283 transitions. Second operand has 22 states, 22 states have (on average 4.954545454545454) internal successors, (109), 22 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:58,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:58,197 INFO L93 Difference]: Finished difference Result 4246 states and 11297 transitions. [2021-06-05 07:58:58,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-06-05 07:58:58,198 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.954545454545454) internal successors, (109), 22 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-06-05 07:58:58,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:58,201 INFO L225 Difference]: With dead ends: 4246 [2021-06-05 07:58:58,201 INFO L226 Difference]: Without dead ends: 3976 [2021-06-05 07:58:58,202 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 631 ImplicationChecksByTransitivity, 501.2ms TimeCoverageRelationStatistics Valid=661, Invalid=1991, Unknown=0, NotChecked=0, Total=2652 [2021-06-05 07:58:58,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3976 states. [2021-06-05 07:58:58,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3976 to 3303. [2021-06-05 07:58:58,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3303 states, 3302 states have (on average 2.811326468806784) internal successors, (9283), 3302 states have internal predecessors, (9283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:58,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3303 states to 3303 states and 9283 transitions. [2021-06-05 07:58:58,234 INFO L78 Accepts]: Start accepts. Automaton has 3303 states and 9283 transitions. Word has length 105 [2021-06-05 07:58:58,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:58,235 INFO L482 AbstractCegarLoop]: Abstraction has 3303 states and 9283 transitions. [2021-06-05 07:58:58,235 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 4.954545454545454) internal successors, (109), 22 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:58,235 INFO L276 IsEmpty]: Start isEmpty. Operand 3303 states and 9283 transitions. [2021-06-05 07:58:58,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-06-05 07:58:58,237 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:58,237 INFO L521 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:58,437 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 114 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable118 [2021-06-05 07:58:58,437 INFO L430 AbstractCegarLoop]: === Iteration 120 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:58,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:58,438 INFO L82 PathProgramCache]: Analyzing trace with hash 983394737, now seen corresponding path program 111 times [2021-06-05 07:58:58,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:58,438 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013901428] [2021-06-05 07:58:58,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:58,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:58,555 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:58,556 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:58,556 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013901428] [2021-06-05 07:58:58,556 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013901428] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:58,556 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1068945978] [2021-06-05 07:58:58,556 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 115 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 115 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:58,613 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-06-05 07:58:58,613 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:58:58,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 21 conjunts are in the unsatisfiable core [2021-06-05 07:58:58,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:58,733 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:58,734 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1068945978] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:58,734 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:58,734 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2021-06-05 07:58:58,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058448768] [2021-06-05 07:58:58,734 INFO L462 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-06-05 07:58:58,734 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:58,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-06-05 07:58:58,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=340, Unknown=0, NotChecked=0, Total=420 [2021-06-05 07:58:58,734 INFO L87 Difference]: Start difference. First operand 3303 states and 9283 transitions. Second operand has 21 states, 21 states have (on average 5.095238095238095) internal successors, (107), 21 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:59,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:59,183 INFO L93 Difference]: Finished difference Result 4196 states and 11197 transitions. [2021-06-05 07:58:59,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-06-05 07:58:59,183 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.095238095238095) internal successors, (107), 21 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-06-05 07:58:59,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:59,187 INFO L225 Difference]: With dead ends: 4196 [2021-06-05 07:58:59,187 INFO L226 Difference]: Without dead ends: 3926 [2021-06-05 07:58:59,188 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 690 ImplicationChecksByTransitivity, 414.5ms TimeCoverageRelationStatistics Valid=719, Invalid=1933, Unknown=0, NotChecked=0, Total=2652 [2021-06-05 07:58:59,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3926 states. [2021-06-05 07:58:59,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3926 to 3303. [2021-06-05 07:58:59,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3303 states, 3302 states have (on average 2.811326468806784) internal successors, (9283), 3302 states have internal predecessors, (9283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:59,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3303 states to 3303 states and 9283 transitions. [2021-06-05 07:58:59,219 INFO L78 Accepts]: Start accepts. Automaton has 3303 states and 9283 transitions. Word has length 105 [2021-06-05 07:58:59,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:59,219 INFO L482 AbstractCegarLoop]: Abstraction has 3303 states and 9283 transitions. [2021-06-05 07:58:59,219 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 5.095238095238095) internal successors, (107), 21 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:59,219 INFO L276 IsEmpty]: Start isEmpty. Operand 3303 states and 9283 transitions. [2021-06-05 07:58:59,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-06-05 07:58:59,222 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:59,222 INFO L521 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:59,422 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119,115 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:59,422 INFO L430 AbstractCegarLoop]: === Iteration 121 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:59,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:59,422 INFO L82 PathProgramCache]: Analyzing trace with hash -731847551, now seen corresponding path program 112 times [2021-06-05 07:58:59,422 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:59,423 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690654598] [2021-06-05 07:58:59,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:59,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:59,547 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:59,548 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:59,548 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690654598] [2021-06-05 07:58:59,548 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690654598] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:59,548 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1597789225] [2021-06-05 07:58:59,548 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 116 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 116 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:59,610 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 07:58:59,610 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:58:59,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 21 conjunts are in the unsatisfiable core [2021-06-05 07:58:59,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:59,750 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:59,751 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1597789225] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:59,751 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:59,751 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 22 [2021-06-05 07:58:59,751 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807533965] [2021-06-05 07:58:59,751 INFO L462 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-06-05 07:58:59,751 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:59,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-06-05 07:58:59,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=380, Unknown=0, NotChecked=0, Total=462 [2021-06-05 07:58:59,752 INFO L87 Difference]: Start difference. First operand 3303 states and 9283 transitions. Second operand has 22 states, 22 states have (on average 4.954545454545454) internal successors, (109), 22 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:00,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:59:00,324 INFO L93 Difference]: Finished difference Result 4206 states and 11247 transitions. [2021-06-05 07:59:00,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-05 07:59:00,324 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.954545454545454) internal successors, (109), 22 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-06-05 07:59:00,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:59:00,328 INFO L225 Difference]: With dead ends: 4206 [2021-06-05 07:59:00,328 INFO L226 Difference]: Without dead ends: 3936 [2021-06-05 07:59:00,328 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 716 ImplicationChecksByTransitivity, 542.3ms TimeCoverageRelationStatistics Valid=750, Invalid=2112, Unknown=0, NotChecked=0, Total=2862 [2021-06-05 07:59:00,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3936 states. [2021-06-05 07:59:00,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3936 to 3303. [2021-06-05 07:59:00,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3303 states, 3302 states have (on average 2.812840702604482) internal successors, (9288), 3302 states have internal predecessors, (9288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:00,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3303 states to 3303 states and 9288 transitions. [2021-06-05 07:59:00,362 INFO L78 Accepts]: Start accepts. Automaton has 3303 states and 9288 transitions. Word has length 105 [2021-06-05 07:59:00,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:59:00,363 INFO L482 AbstractCegarLoop]: Abstraction has 3303 states and 9288 transitions. [2021-06-05 07:59:00,363 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 4.954545454545454) internal successors, (109), 22 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:00,363 INFO L276 IsEmpty]: Start isEmpty. Operand 3303 states and 9288 transitions. [2021-06-05 07:59:00,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-06-05 07:59:00,365 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:59:00,365 INFO L521 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:59:00,572 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120,116 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:00,573 INFO L430 AbstractCegarLoop]: === Iteration 122 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:59:00,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:59:00,573 INFO L82 PathProgramCache]: Analyzing trace with hash -1764495153, now seen corresponding path program 113 times [2021-06-05 07:59:00,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:59:00,573 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594853863] [2021-06-05 07:59:00,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:59:00,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:59:00,693 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:00,693 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:59:00,693 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594853863] [2021-06-05 07:59:00,693 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594853863] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:00,693 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [144082890] [2021-06-05 07:59:00,693 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 117 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 117 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:00,746 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2021-06-05 07:59:00,746 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:59:00,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 21 conjunts are in the unsatisfiable core [2021-06-05 07:59:00,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:59:00,860 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:00,860 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [144082890] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:00,860 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:59:00,860 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2021-06-05 07:59:00,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639536431] [2021-06-05 07:59:00,860 INFO L462 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-06-05 07:59:00,860 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:59:00,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-06-05 07:59:00,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2021-06-05 07:59:00,861 INFO L87 Difference]: Start difference. First operand 3303 states and 9288 transitions. Second operand has 21 states, 21 states have (on average 5.095238095238095) internal successors, (107), 21 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:01,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:59:01,336 INFO L93 Difference]: Finished difference Result 4948 states and 13371 transitions. [2021-06-05 07:59:01,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-05 07:59:01,337 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.095238095238095) internal successors, (107), 21 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-06-05 07:59:01,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:59:01,341 INFO L225 Difference]: With dead ends: 4948 [2021-06-05 07:59:01,341 INFO L226 Difference]: Without dead ends: 4678 [2021-06-05 07:59:01,341 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 775 ImplicationChecksByTransitivity, 433.2ms TimeCoverageRelationStatistics Valid=823, Invalid=2039, Unknown=0, NotChecked=0, Total=2862 [2021-06-05 07:59:01,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4678 states. [2021-06-05 07:59:01,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4678 to 3483. [2021-06-05 07:59:01,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3483 states, 3482 states have (on average 2.827972429638139) internal successors, (9847), 3482 states have internal predecessors, (9847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:01,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3483 states to 3483 states and 9847 transitions. [2021-06-05 07:59:01,381 INFO L78 Accepts]: Start accepts. Automaton has 3483 states and 9847 transitions. Word has length 105 [2021-06-05 07:59:01,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:59:01,381 INFO L482 AbstractCegarLoop]: Abstraction has 3483 states and 9847 transitions. [2021-06-05 07:59:01,381 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 5.095238095238095) internal successors, (107), 21 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:01,381 INFO L276 IsEmpty]: Start isEmpty. Operand 3483 states and 9847 transitions. [2021-06-05 07:59:01,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-06-05 07:59:01,383 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:59:01,383 INFO L521 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:59:01,583 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121,117 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:01,583 INFO L430 AbstractCegarLoop]: === Iteration 123 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:59:01,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:59:01,584 INFO L82 PathProgramCache]: Analyzing trace with hash -1742151903, now seen corresponding path program 114 times [2021-06-05 07:59:01,584 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:59:01,584 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309936033] [2021-06-05 07:59:01,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:59:01,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:59:01,710 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:01,710 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:59:01,710 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309936033] [2021-06-05 07:59:01,710 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309936033] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:01,710 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [203461403] [2021-06-05 07:59:01,710 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 118 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 118 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:01,768 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2021-06-05 07:59:01,768 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:59:01,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 21 conjunts are in the unsatisfiable core [2021-06-05 07:59:01,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:59:01,894 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:01,894 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [203461403] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:01,895 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:59:01,895 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 22 [2021-06-05 07:59:01,895 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780178754] [2021-06-05 07:59:01,895 INFO L462 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-06-05 07:59:01,895 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:59:01,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-06-05 07:59:01,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=369, Unknown=0, NotChecked=0, Total=462 [2021-06-05 07:59:01,895 INFO L87 Difference]: Start difference. First operand 3483 states and 9847 transitions. Second operand has 22 states, 22 states have (on average 4.909090909090909) internal successors, (108), 22 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:02,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:59:02,537 INFO L93 Difference]: Finished difference Result 4816 states and 13036 transitions. [2021-06-05 07:59:02,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-05 07:59:02,538 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.909090909090909) internal successors, (108), 22 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-06-05 07:59:02,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:59:02,542 INFO L225 Difference]: With dead ends: 4816 [2021-06-05 07:59:02,542 INFO L226 Difference]: Without dead ends: 4241 [2021-06-05 07:59:02,542 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 916 ImplicationChecksByTransitivity, 601.4ms TimeCoverageRelationStatistics Valid=896, Invalid=2526, Unknown=0, NotChecked=0, Total=3422 [2021-06-05 07:59:02,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4241 states. [2021-06-05 07:59:02,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4241 to 2324. [2021-06-05 07:59:02,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2324 states, 2323 states have (on average 2.7361170899698664) internal successors, (6356), 2323 states have internal predecessors, (6356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:02,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2324 states to 2324 states and 6356 transitions. [2021-06-05 07:59:02,568 INFO L78 Accepts]: Start accepts. Automaton has 2324 states and 6356 transitions. Word has length 105 [2021-06-05 07:59:02,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:59:02,568 INFO L482 AbstractCegarLoop]: Abstraction has 2324 states and 6356 transitions. [2021-06-05 07:59:02,568 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 4.909090909090909) internal successors, (108), 22 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:02,568 INFO L276 IsEmpty]: Start isEmpty. Operand 2324 states and 6356 transitions. [2021-06-05 07:59:02,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-06-05 07:59:02,570 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:59:02,570 INFO L521 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:59:02,775 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 118 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable122 [2021-06-05 07:59:02,775 INFO L430 AbstractCegarLoop]: === Iteration 124 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:59:02,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:59:02,775 INFO L82 PathProgramCache]: Analyzing trace with hash 1657780875, now seen corresponding path program 115 times [2021-06-05 07:59:02,775 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:59:02,775 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285952894] [2021-06-05 07:59:02,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:59:02,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:59:02,938 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:02,938 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:59:02,938 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285952894] [2021-06-05 07:59:02,938 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285952894] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:02,938 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1952608047] [2021-06-05 07:59:02,938 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 119 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 119 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:02,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:59:02,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 23 conjunts are in the unsatisfiable core [2021-06-05 07:59:02,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:59:03,153 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:03,154 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1952608047] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:03,154 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:59:03,154 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 25 [2021-06-05 07:59:03,154 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803832806] [2021-06-05 07:59:03,154 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 07:59:03,154 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:59:03,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 07:59:03,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=467, Unknown=0, NotChecked=0, Total=600 [2021-06-05 07:59:03,155 INFO L87 Difference]: Start difference. First operand 2324 states and 6356 transitions. Second operand has 25 states, 25 states have (on average 5.6) internal successors, (140), 25 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:03,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:59:03,541 INFO L93 Difference]: Finished difference Result 3364 states and 8756 transitions. [2021-06-05 07:59:03,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-05 07:59:03,541 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.6) internal successors, (140), 25 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-06-05 07:59:03,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:59:03,544 INFO L225 Difference]: With dead ends: 3364 [2021-06-05 07:59:03,544 INFO L226 Difference]: Without dead ends: 3030 [2021-06-05 07:59:03,544 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 425 ImplicationChecksByTransitivity, 412.9ms TimeCoverageRelationStatistics Valid=572, Invalid=1590, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 07:59:03,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3030 states. [2021-06-05 07:59:03,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3030 to 2409. [2021-06-05 07:59:03,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2409 states, 2408 states have (on average 2.7101328903654487) internal successors, (6526), 2408 states have internal predecessors, (6526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:03,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2409 states to 2409 states and 6526 transitions. [2021-06-05 07:59:03,566 INFO L78 Accepts]: Start accepts. Automaton has 2409 states and 6526 transitions. Word has length 110 [2021-06-05 07:59:03,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:59:03,566 INFO L482 AbstractCegarLoop]: Abstraction has 2409 states and 6526 transitions. [2021-06-05 07:59:03,566 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 5.6) internal successors, (140), 25 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:03,567 INFO L276 IsEmpty]: Start isEmpty. Operand 2409 states and 6526 transitions. [2021-06-05 07:59:03,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-06-05 07:59:03,568 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:59:03,568 INFO L521 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:59:03,768 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 119 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable123 [2021-06-05 07:59:03,769 INFO L430 AbstractCegarLoop]: === Iteration 125 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:59:03,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:59:03,769 INFO L82 PathProgramCache]: Analyzing trace with hash -1067386545, now seen corresponding path program 116 times [2021-06-05 07:59:03,769 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:59:03,769 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698281616] [2021-06-05 07:59:03,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:59:03,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:59:03,933 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:03,933 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:59:03,933 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698281616] [2021-06-05 07:59:03,933 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698281616] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:03,933 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1352594562] [2021-06-05 07:59:03,933 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 120 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 120 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:03,986 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 07:59:03,987 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:59:03,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 22 conjunts are in the unsatisfiable core [2021-06-05 07:59:03,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:59:04,147 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:04,148 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1352594562] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:04,148 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:59:04,148 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2021-06-05 07:59:04,148 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359830972] [2021-06-05 07:59:04,148 INFO L462 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-06-05 07:59:04,148 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:59:04,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-06-05 07:59:04,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=356, Unknown=0, NotChecked=0, Total=462 [2021-06-05 07:59:04,148 INFO L87 Difference]: Start difference. First operand 2409 states and 6526 transitions. Second operand has 22 states, 22 states have (on average 5.090909090909091) internal successors, (112), 22 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:04,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:59:04,450 INFO L93 Difference]: Finished difference Result 4086 states and 10137 transitions. [2021-06-05 07:59:04,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-05 07:59:04,450 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.090909090909091) internal successors, (112), 22 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-06-05 07:59:04,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:59:04,454 INFO L225 Difference]: With dead ends: 4086 [2021-06-05 07:59:04,454 INFO L226 Difference]: Without dead ends: 3816 [2021-06-05 07:59:04,454 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 352.5ms TimeCoverageRelationStatistics Valid=446, Invalid=1194, Unknown=0, NotChecked=0, Total=1640 [2021-06-05 07:59:04,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3816 states. [2021-06-05 07:59:04,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3816 to 2553. [2021-06-05 07:59:04,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2553 states, 2552 states have (on average 2.720611285266458) internal successors, (6943), 2552 states have internal predecessors, (6943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:04,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2553 states to 2553 states and 6943 transitions. [2021-06-05 07:59:04,481 INFO L78 Accepts]: Start accepts. Automaton has 2553 states and 6943 transitions. Word has length 110 [2021-06-05 07:59:04,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:59:04,481 INFO L482 AbstractCegarLoop]: Abstraction has 2553 states and 6943 transitions. [2021-06-05 07:59:04,481 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 5.090909090909091) internal successors, (112), 22 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:04,481 INFO L276 IsEmpty]: Start isEmpty. Operand 2553 states and 6943 transitions. [2021-06-05 07:59:04,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-06-05 07:59:04,483 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:59:04,483 INFO L521 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:59:04,683 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 120 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable124 [2021-06-05 07:59:04,683 INFO L430 AbstractCegarLoop]: === Iteration 126 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:59:04,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:59:04,684 INFO L82 PathProgramCache]: Analyzing trace with hash -1447830497, now seen corresponding path program 117 times [2021-06-05 07:59:04,684 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:59:04,684 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747321288] [2021-06-05 07:59:04,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:59:04,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:59:04,862 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:04,862 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:59:04,862 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747321288] [2021-06-05 07:59:04,863 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747321288] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:04,863 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1764299217] [2021-06-05 07:59:04,863 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 121 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 121 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:04,922 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-06-05 07:59:04,922 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:59:04,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 22 conjunts are in the unsatisfiable core [2021-06-05 07:59:04,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:59:05,069 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:05,070 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1764299217] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:05,070 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:59:05,070 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2021-06-05 07:59:05,070 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620694869] [2021-06-05 07:59:05,070 INFO L462 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-06-05 07:59:05,070 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:59:05,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-06-05 07:59:05,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=404, Unknown=0, NotChecked=0, Total=506 [2021-06-05 07:59:05,071 INFO L87 Difference]: Start difference. First operand 2553 states and 6943 transitions. Second operand has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:05,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:59:05,413 INFO L93 Difference]: Finished difference Result 4046 states and 10132 transitions. [2021-06-05 07:59:05,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-05 07:59:05,414 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-06-05 07:59:05,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:59:05,417 INFO L225 Difference]: With dead ends: 4046 [2021-06-05 07:59:05,417 INFO L226 Difference]: Without dead ends: 3776 [2021-06-05 07:59:05,417 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 334 ImplicationChecksByTransitivity, 402.7ms TimeCoverageRelationStatistics Valid=507, Invalid=1473, Unknown=0, NotChecked=0, Total=1980 [2021-06-05 07:59:05,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3776 states. [2021-06-05 07:59:05,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3776 to 2628. [2021-06-05 07:59:05,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2628 states, 2627 states have (on average 2.7285877426722496) internal successors, (7168), 2627 states have internal predecessors, (7168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:05,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2628 states to 2628 states and 7168 transitions. [2021-06-05 07:59:05,446 INFO L78 Accepts]: Start accepts. Automaton has 2628 states and 7168 transitions. Word has length 110 [2021-06-05 07:59:05,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:59:05,446 INFO L482 AbstractCegarLoop]: Abstraction has 2628 states and 7168 transitions. [2021-06-05 07:59:05,446 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:05,446 INFO L276 IsEmpty]: Start isEmpty. Operand 2628 states and 7168 transitions. [2021-06-05 07:59:05,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-06-05 07:59:05,448 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:59:05,448 INFO L521 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:59:05,649 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 121 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable125 [2021-06-05 07:59:05,649 INFO L430 AbstractCegarLoop]: === Iteration 127 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:59:05,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:59:05,649 INFO L82 PathProgramCache]: Analyzing trace with hash -823455347, now seen corresponding path program 118 times [2021-06-05 07:59:05,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:59:05,649 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801796661] [2021-06-05 07:59:05,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:59:05,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:59:05,798 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:05,798 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:59:05,798 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801796661] [2021-06-05 07:59:05,798 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801796661] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:05,798 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [702089493] [2021-06-05 07:59:05,798 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 122 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 122 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:05,857 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 07:59:05,857 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:59:05,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 22 conjunts are in the unsatisfiable core [2021-06-05 07:59:05,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:59:05,991 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:05,992 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [702089493] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:05,992 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:59:05,992 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2021-06-05 07:59:05,992 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011636146] [2021-06-05 07:59:05,992 INFO L462 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-06-05 07:59:05,992 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:59:05,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-06-05 07:59:05,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=369, Unknown=0, NotChecked=0, Total=462 [2021-06-05 07:59:05,992 INFO L87 Difference]: Start difference. First operand 2628 states and 7168 transitions. Second operand has 22 states, 22 states have (on average 5.090909090909091) internal successors, (112), 22 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:06,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:59:06,310 INFO L93 Difference]: Finished difference Result 4096 states and 10307 transitions. [2021-06-05 07:59:06,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-05 07:59:06,310 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.090909090909091) internal successors, (112), 22 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-06-05 07:59:06,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:59:06,313 INFO L225 Difference]: With dead ends: 4096 [2021-06-05 07:59:06,313 INFO L226 Difference]: Without dead ends: 3826 [2021-06-05 07:59:06,314 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 342.6ms TimeCoverageRelationStatistics Valid=454, Invalid=1352, Unknown=0, NotChecked=0, Total=1806 [2021-06-05 07:59:06,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3826 states. [2021-06-05 07:59:06,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3826 to 2703. [2021-06-05 07:59:06,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2703 states, 2702 states have (on average 2.736121391561806) internal successors, (7393), 2702 states have internal predecessors, (7393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:06,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2703 states to 2703 states and 7393 transitions. [2021-06-05 07:59:06,340 INFO L78 Accepts]: Start accepts. Automaton has 2703 states and 7393 transitions. Word has length 110 [2021-06-05 07:59:06,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:59:06,340 INFO L482 AbstractCegarLoop]: Abstraction has 2703 states and 7393 transitions. [2021-06-05 07:59:06,340 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 5.090909090909091) internal successors, (112), 22 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:06,340 INFO L276 IsEmpty]: Start isEmpty. Operand 2703 states and 7393 transitions. [2021-06-05 07:59:06,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-06-05 07:59:06,342 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:59:06,342 INFO L521 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:59:06,544 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 122 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable126 [2021-06-05 07:59:06,544 INFO L430 AbstractCegarLoop]: === Iteration 128 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:59:06,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:59:06,544 INFO L82 PathProgramCache]: Analyzing trace with hash -14403491, now seen corresponding path program 119 times [2021-06-05 07:59:06,545 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:59:06,545 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080310363] [2021-06-05 07:59:06,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:59:06,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:59:06,718 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:06,718 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:59:06,718 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080310363] [2021-06-05 07:59:06,719 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080310363] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:06,719 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2038482255] [2021-06-05 07:59:06,719 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 123 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 123 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:06,773 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2021-06-05 07:59:06,774 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:59:06,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 22 conjunts are in the unsatisfiable core [2021-06-05 07:59:06,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:59:06,920 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:06,920 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2038482255] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:06,920 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:59:06,920 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2021-06-05 07:59:06,920 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094822603] [2021-06-05 07:59:06,921 INFO L462 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-06-05 07:59:06,921 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:59:06,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-06-05 07:59:06,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=416, Unknown=0, NotChecked=0, Total=506 [2021-06-05 07:59:06,922 INFO L87 Difference]: Start difference. First operand 2703 states and 7393 transitions. Second operand has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:07,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:59:07,337 INFO L93 Difference]: Finished difference Result 4121 states and 10432 transitions. [2021-06-05 07:59:07,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-06-05 07:59:07,338 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-06-05 07:59:07,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:59:07,341 INFO L225 Difference]: With dead ends: 4121 [2021-06-05 07:59:07,341 INFO L226 Difference]: Without dead ends: 3851 [2021-06-05 07:59:07,342 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 395 ImplicationChecksByTransitivity, 434.9ms TimeCoverageRelationStatistics Valid=523, Invalid=1639, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 07:59:07,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3851 states. [2021-06-05 07:59:07,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3851 to 2778. [2021-06-05 07:59:07,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2778 states, 2777 states have (on average 2.7432481094706516) internal successors, (7618), 2777 states have internal predecessors, (7618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:07,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2778 states to 2778 states and 7618 transitions. [2021-06-05 07:59:07,374 INFO L78 Accepts]: Start accepts. Automaton has 2778 states and 7618 transitions. Word has length 110 [2021-06-05 07:59:07,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:59:07,374 INFO L482 AbstractCegarLoop]: Abstraction has 2778 states and 7618 transitions. [2021-06-05 07:59:07,374 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:07,374 INFO L276 IsEmpty]: Start isEmpty. Operand 2778 states and 7618 transitions. [2021-06-05 07:59:07,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-06-05 07:59:07,376 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:59:07,376 INFO L521 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:59:07,578 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127,123 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:07,578 INFO L430 AbstractCegarLoop]: === Iteration 129 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:59:07,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:59:07,578 INFO L82 PathProgramCache]: Analyzing trace with hash -1406353589, now seen corresponding path program 120 times [2021-06-05 07:59:07,578 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:59:07,578 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463980190] [2021-06-05 07:59:07,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:59:07,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:59:07,726 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:07,726 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:59:07,726 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463980190] [2021-06-05 07:59:07,726 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463980190] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:07,726 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [547780576] [2021-06-05 07:59:07,726 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 124 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 124 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:07,786 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2021-06-05 07:59:07,786 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:59:07,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 22 conjunts are in the unsatisfiable core [2021-06-05 07:59:07,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:59:07,919 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:07,919 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [547780576] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:07,919 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:59:07,919 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2021-06-05 07:59:07,919 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923143260] [2021-06-05 07:59:07,919 INFO L462 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-06-05 07:59:07,920 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:59:07,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-06-05 07:59:07,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=378, Unknown=0, NotChecked=0, Total=462 [2021-06-05 07:59:07,920 INFO L87 Difference]: Start difference. First operand 2778 states and 7618 transitions. Second operand has 22 states, 22 states have (on average 5.090909090909091) internal successors, (112), 22 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:08,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:59:08,267 INFO L93 Difference]: Finished difference Result 4146 states and 10557 transitions. [2021-06-05 07:59:08,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-05 07:59:08,267 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.090909090909091) internal successors, (112), 22 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-06-05 07:59:08,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:59:08,271 INFO L225 Difference]: With dead ends: 4146 [2021-06-05 07:59:08,271 INFO L226 Difference]: Without dead ends: 3876 [2021-06-05 07:59:08,272 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 387 ImplicationChecksByTransitivity, 363.3ms TimeCoverageRelationStatistics Valid=478, Invalid=1502, Unknown=0, NotChecked=0, Total=1980 [2021-06-05 07:59:08,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3876 states. [2021-06-05 07:59:08,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3876 to 2853. [2021-06-05 07:59:08,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2853 states, 2852 states have (on average 2.75) internal successors, (7843), 2852 states have internal predecessors, (7843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:08,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2853 states to 2853 states and 7843 transitions. [2021-06-05 07:59:08,314 INFO L78 Accepts]: Start accepts. Automaton has 2853 states and 7843 transitions. Word has length 110 [2021-06-05 07:59:08,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:59:08,314 INFO L482 AbstractCegarLoop]: Abstraction has 2853 states and 7843 transitions. [2021-06-05 07:59:08,314 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 5.090909090909091) internal successors, (112), 22 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:08,315 INFO L276 IsEmpty]: Start isEmpty. Operand 2853 states and 7843 transitions. [2021-06-05 07:59:08,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-06-05 07:59:08,316 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:59:08,317 INFO L521 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:59:08,517 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 124 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable128 [2021-06-05 07:59:08,517 INFO L430 AbstractCegarLoop]: === Iteration 130 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:59:08,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:59:08,517 INFO L82 PathProgramCache]: Analyzing trace with hash -1651430885, now seen corresponding path program 121 times [2021-06-05 07:59:08,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:59:08,517 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328712387] [2021-06-05 07:59:08,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:59:08,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:59:08,671 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:08,671 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:59:08,671 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328712387] [2021-06-05 07:59:08,671 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328712387] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:08,671 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1860062847] [2021-06-05 07:59:08,671 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 125 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 125 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:08,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:59:08,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 22 conjunts are in the unsatisfiable core [2021-06-05 07:59:08,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:59:08,866 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:08,867 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1860062847] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:08,867 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:59:08,867 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2021-06-05 07:59:08,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975432887] [2021-06-05 07:59:08,867 INFO L462 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-06-05 07:59:08,867 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:59:08,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-06-05 07:59:08,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=424, Unknown=0, NotChecked=0, Total=506 [2021-06-05 07:59:08,867 INFO L87 Difference]: Start difference. First operand 2853 states and 7843 transitions. Second operand has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:09,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:59:09,320 INFO L93 Difference]: Finished difference Result 4171 states and 10682 transitions. [2021-06-05 07:59:09,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-06-05 07:59:09,324 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-06-05 07:59:09,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:59:09,329 INFO L225 Difference]: With dead ends: 4171 [2021-06-05 07:59:09,329 INFO L226 Difference]: Without dead ends: 3901 [2021-06-05 07:59:09,329 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 461 ImplicationChecksByTransitivity, 459.3ms TimeCoverageRelationStatistics Valid=555, Invalid=1797, Unknown=0, NotChecked=0, Total=2352 [2021-06-05 07:59:09,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3901 states. [2021-06-05 07:59:09,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3901 to 2928. [2021-06-05 07:59:09,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2928 states, 2927 states have (on average 2.756405876323881) internal successors, (8068), 2927 states have internal predecessors, (8068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:09,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2928 states to 2928 states and 8068 transitions. [2021-06-05 07:59:09,364 INFO L78 Accepts]: Start accepts. Automaton has 2928 states and 8068 transitions. Word has length 110 [2021-06-05 07:59:09,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:59:09,364 INFO L482 AbstractCegarLoop]: Abstraction has 2928 states and 8068 transitions. [2021-06-05 07:59:09,364 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:09,364 INFO L276 IsEmpty]: Start isEmpty. Operand 2928 states and 8068 transitions. [2021-06-05 07:59:09,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-06-05 07:59:09,366 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:59:09,366 INFO L521 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:59:09,567 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 125 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable129 [2021-06-05 07:59:09,567 INFO L430 AbstractCegarLoop]: === Iteration 131 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:59:09,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:59:09,568 INFO L82 PathProgramCache]: Analyzing trace with hash -2028281207, now seen corresponding path program 122 times [2021-06-05 07:59:09,568 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:59:09,568 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064871457] [2021-06-05 07:59:09,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:59:09,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:59:09,708 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:09,708 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:59:09,708 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064871457] [2021-06-05 07:59:09,708 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064871457] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:09,708 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [310851700] [2021-06-05 07:59:09,708 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 126 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 126 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:09,767 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 07:59:09,767 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:59:09,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 22 conjunts are in the unsatisfiable core [2021-06-05 07:59:09,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:59:09,898 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:09,898 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [310851700] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:09,898 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:59:09,898 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2021-06-05 07:59:09,898 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170470506] [2021-06-05 07:59:09,899 INFO L462 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-06-05 07:59:09,899 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:59:09,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-06-05 07:59:09,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=383, Unknown=0, NotChecked=0, Total=462 [2021-06-05 07:59:09,899 INFO L87 Difference]: Start difference. First operand 2928 states and 8068 transitions. Second operand has 22 states, 22 states have (on average 5.090909090909091) internal successors, (112), 22 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:10,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:59:10,277 INFO L93 Difference]: Finished difference Result 4196 states and 10807 transitions. [2021-06-05 07:59:10,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-06-05 07:59:10,277 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.090909090909091) internal successors, (112), 22 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-06-05 07:59:10,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:59:10,281 INFO L225 Difference]: With dead ends: 4196 [2021-06-05 07:59:10,281 INFO L226 Difference]: Without dead ends: 3926 [2021-06-05 07:59:10,281 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 450 ImplicationChecksByTransitivity, 386.0ms TimeCoverageRelationStatistics Valid=518, Invalid=1644, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 07:59:10,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3926 states. [2021-06-05 07:59:10,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3926 to 3003. [2021-06-05 07:59:10,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3003 states, 3002 states have (on average 2.762491672218521) internal successors, (8293), 3002 states have internal predecessors, (8293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:10,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3003 states to 3003 states and 8293 transitions. [2021-06-05 07:59:10,333 INFO L78 Accepts]: Start accepts. Automaton has 3003 states and 8293 transitions. Word has length 110 [2021-06-05 07:59:10,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:59:10,333 INFO L482 AbstractCegarLoop]: Abstraction has 3003 states and 8293 transitions. [2021-06-05 07:59:10,333 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 5.090909090909091) internal successors, (112), 22 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:10,333 INFO L276 IsEmpty]: Start isEmpty. Operand 3003 states and 8293 transitions. [2021-06-05 07:59:10,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-06-05 07:59:10,335 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:59:10,335 INFO L521 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:59:10,536 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130,126 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:10,536 INFO L430 AbstractCegarLoop]: === Iteration 132 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:59:10,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:59:10,537 INFO L82 PathProgramCache]: Analyzing trace with hash -701525671, now seen corresponding path program 123 times [2021-06-05 07:59:10,537 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:59:10,537 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398118720] [2021-06-05 07:59:10,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:59:10,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:59:10,681 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:10,681 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:59:10,681 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398118720] [2021-06-05 07:59:10,681 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398118720] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:10,681 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [368837427] [2021-06-05 07:59:10,681 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 127 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 127 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:10,740 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-06-05 07:59:10,740 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:59:10,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 22 conjunts are in the unsatisfiable core [2021-06-05 07:59:10,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:59:10,881 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:10,881 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [368837427] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:10,881 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:59:10,881 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2021-06-05 07:59:10,881 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303265115] [2021-06-05 07:59:10,881 INFO L462 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-06-05 07:59:10,881 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:59:10,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-06-05 07:59:10,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=428, Unknown=0, NotChecked=0, Total=506 [2021-06-05 07:59:10,882 INFO L87 Difference]: Start difference. First operand 3003 states and 8293 transitions. Second operand has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:11,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:59:11,371 INFO L93 Difference]: Finished difference Result 4221 states and 10932 transitions. [2021-06-05 07:59:11,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-06-05 07:59:11,371 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-06-05 07:59:11,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:59:11,375 INFO L225 Difference]: With dead ends: 4221 [2021-06-05 07:59:11,375 INFO L226 Difference]: Without dead ends: 3951 [2021-06-05 07:59:11,376 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 531 ImplicationChecksByTransitivity, 487.6ms TimeCoverageRelationStatistics Valid=603, Invalid=1947, Unknown=0, NotChecked=0, Total=2550 [2021-06-05 07:59:11,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3951 states. [2021-06-05 07:59:11,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3951 to 3078. [2021-06-05 07:59:11,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3078 states, 3077 states have (on average 2.7682807929801756) internal successors, (8518), 3077 states have internal predecessors, (8518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:11,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3078 states to 3078 states and 8518 transitions. [2021-06-05 07:59:11,412 INFO L78 Accepts]: Start accepts. Automaton has 3078 states and 8518 transitions. Word has length 110 [2021-06-05 07:59:11,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:59:11,412 INFO L482 AbstractCegarLoop]: Abstraction has 3078 states and 8518 transitions. [2021-06-05 07:59:11,412 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:11,412 INFO L276 IsEmpty]: Start isEmpty. Operand 3078 states and 8518 transitions. [2021-06-05 07:59:11,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-06-05 07:59:11,414 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:59:11,414 INFO L521 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:59:11,614 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131,127 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:11,615 INFO L430 AbstractCegarLoop]: === Iteration 133 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:59:11,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:59:11,615 INFO L82 PathProgramCache]: Analyzing trace with hash -247309497, now seen corresponding path program 124 times [2021-06-05 07:59:11,615 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:59:11,615 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342643832] [2021-06-05 07:59:11,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:59:11,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:59:11,746 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:11,746 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:59:11,746 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342643832] [2021-06-05 07:59:11,747 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342643832] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:11,747 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [704332019] [2021-06-05 07:59:11,747 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 128 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 128 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:11,801 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 07:59:11,801 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:59:11,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 22 conjunts are in the unsatisfiable core [2021-06-05 07:59:11,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:59:11,928 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:11,928 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [704332019] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:11,928 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:59:11,928 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2021-06-05 07:59:11,928 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948270638] [2021-06-05 07:59:11,928 INFO L462 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-06-05 07:59:11,928 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:59:11,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-06-05 07:59:11,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=384, Unknown=0, NotChecked=0, Total=462 [2021-06-05 07:59:11,929 INFO L87 Difference]: Start difference. First operand 3078 states and 8518 transitions. Second operand has 22 states, 22 states have (on average 5.090909090909091) internal successors, (112), 22 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:12,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:59:12,336 INFO L93 Difference]: Finished difference Result 4246 states and 11057 transitions. [2021-06-05 07:59:12,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-06-05 07:59:12,336 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.090909090909091) internal successors, (112), 22 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-06-05 07:59:12,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:59:12,340 INFO L225 Difference]: With dead ends: 4246 [2021-06-05 07:59:12,340 INFO L226 Difference]: Without dead ends: 3976 [2021-06-05 07:59:12,340 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 517 ImplicationChecksByTransitivity, 403.4ms TimeCoverageRelationStatistics Valid=574, Invalid=1778, Unknown=0, NotChecked=0, Total=2352 [2021-06-05 07:59:12,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3976 states. [2021-06-05 07:59:12,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3976 to 3153. [2021-06-05 07:59:12,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3153 states, 3152 states have (on average 2.7737944162436547) internal successors, (8743), 3152 states have internal predecessors, (8743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:12,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3153 states to 3153 states and 8743 transitions. [2021-06-05 07:59:12,390 INFO L78 Accepts]: Start accepts. Automaton has 3153 states and 8743 transitions. Word has length 110 [2021-06-05 07:59:12,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:59:12,390 INFO L482 AbstractCegarLoop]: Abstraction has 3153 states and 8743 transitions. [2021-06-05 07:59:12,391 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 5.090909090909091) internal successors, (112), 22 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:12,391 INFO L276 IsEmpty]: Start isEmpty. Operand 3153 states and 8743 transitions. [2021-06-05 07:59:12,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-06-05 07:59:12,393 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:59:12,393 INFO L521 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:59:12,593 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132,128 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:12,593 INFO L430 AbstractCegarLoop]: === Iteration 134 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:59:12,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:59:12,593 INFO L82 PathProgramCache]: Analyzing trace with hash 751586839, now seen corresponding path program 125 times [2021-06-05 07:59:12,594 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:59:12,594 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736092507] [2021-06-05 07:59:12,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:59:12,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:59:12,732 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:12,732 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:59:12,733 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736092507] [2021-06-05 07:59:12,733 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736092507] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:12,733 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1697085987] [2021-06-05 07:59:12,733 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 129 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 129 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:12,793 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2021-06-05 07:59:12,793 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:59:12,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 22 conjunts are in the unsatisfiable core [2021-06-05 07:59:12,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:59:12,934 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:12,934 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1697085987] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:12,934 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:59:12,934 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2021-06-05 07:59:12,934 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94475981] [2021-06-05 07:59:12,934 INFO L462 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-06-05 07:59:12,934 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:59:12,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-06-05 07:59:12,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=428, Unknown=0, NotChecked=0, Total=506 [2021-06-05 07:59:12,935 INFO L87 Difference]: Start difference. First operand 3153 states and 8743 transitions. Second operand has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:13,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:59:13,486 INFO L93 Difference]: Finished difference Result 4271 states and 11182 transitions. [2021-06-05 07:59:13,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-06-05 07:59:13,486 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-06-05 07:59:13,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:59:13,490 INFO L225 Difference]: With dead ends: 4271 [2021-06-05 07:59:13,490 INFO L226 Difference]: Without dead ends: 4001 [2021-06-05 07:59:13,490 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 605 ImplicationChecksByTransitivity, 527.9ms TimeCoverageRelationStatistics Valid=667, Invalid=2089, Unknown=0, NotChecked=0, Total=2756 [2021-06-05 07:59:13,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4001 states. [2021-06-05 07:59:13,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4001 to 3228. [2021-06-05 07:59:13,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3228 states, 3227 states have (on average 2.779051750852185) internal successors, (8968), 3227 states have internal predecessors, (8968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:13,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3228 states to 3228 states and 8968 transitions. [2021-06-05 07:59:13,526 INFO L78 Accepts]: Start accepts. Automaton has 3228 states and 8968 transitions. Word has length 110 [2021-06-05 07:59:13,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:59:13,526 INFO L482 AbstractCegarLoop]: Abstraction has 3228 states and 8968 transitions. [2021-06-05 07:59:13,527 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:13,527 INFO L276 IsEmpty]: Start isEmpty. Operand 3228 states and 8968 transitions. [2021-06-05 07:59:13,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-06-05 07:59:13,529 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:59:13,529 INFO L521 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:59:13,729 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 129 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable133 [2021-06-05 07:59:13,729 INFO L430 AbstractCegarLoop]: === Iteration 135 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:59:13,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:59:13,730 INFO L82 PathProgramCache]: Analyzing trace with hash -1127741051, now seen corresponding path program 126 times [2021-06-05 07:59:13,730 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:59:13,730 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225718734] [2021-06-05 07:59:13,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:59:13,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:59:13,878 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:13,879 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:59:13,879 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225718734] [2021-06-05 07:59:13,879 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225718734] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:13,879 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1589410785] [2021-06-05 07:59:13,879 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 130 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 130 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:13,959 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2021-06-05 07:59:13,960 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:59:13,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 22 conjunts are in the unsatisfiable core [2021-06-05 07:59:13,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:59:14,088 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:14,088 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1589410785] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:14,088 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:59:14,088 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2021-06-05 07:59:14,088 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810643308] [2021-06-05 07:59:14,089 INFO L462 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-06-05 07:59:14,089 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:59:14,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-06-05 07:59:14,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2021-06-05 07:59:14,089 INFO L87 Difference]: Start difference. First operand 3228 states and 8968 transitions. Second operand has 22 states, 22 states have (on average 5.090909090909091) internal successors, (112), 22 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:14,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:59:14,563 INFO L93 Difference]: Finished difference Result 4296 states and 11307 transitions. [2021-06-05 07:59:14,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-05 07:59:14,563 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.090909090909091) internal successors, (112), 22 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-06-05 07:59:14,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:59:14,566 INFO L225 Difference]: With dead ends: 4296 [2021-06-05 07:59:14,566 INFO L226 Difference]: Without dead ends: 4026 [2021-06-05 07:59:14,566 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 588 ImplicationChecksByTransitivity, 441.3ms TimeCoverageRelationStatistics Valid=646, Invalid=1904, Unknown=0, NotChecked=0, Total=2550 [2021-06-05 07:59:14,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4026 states. [2021-06-05 07:59:14,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4026 to 3303. [2021-06-05 07:59:14,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3303 states, 3302 states have (on average 2.784070260448213) internal successors, (9193), 3302 states have internal predecessors, (9193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:14,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3303 states to 3303 states and 9193 transitions. [2021-06-05 07:59:14,600 INFO L78 Accepts]: Start accepts. Automaton has 3303 states and 9193 transitions. Word has length 110 [2021-06-05 07:59:14,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:59:14,600 INFO L482 AbstractCegarLoop]: Abstraction has 3303 states and 9193 transitions. [2021-06-05 07:59:14,600 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 5.090909090909091) internal successors, (112), 22 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:14,601 INFO L276 IsEmpty]: Start isEmpty. Operand 3303 states and 9193 transitions. [2021-06-05 07:59:14,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-06-05 07:59:14,603 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:59:14,603 INFO L521 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:59:14,803 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 130 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable134 [2021-06-05 07:59:14,803 INFO L430 AbstractCegarLoop]: === Iteration 136 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:59:14,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:59:14,804 INFO L82 PathProgramCache]: Analyzing trace with hash 902578261, now seen corresponding path program 127 times [2021-06-05 07:59:14,804 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:59:14,804 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526693776] [2021-06-05 07:59:14,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:59:14,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:59:14,941 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:14,941 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:59:14,941 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526693776] [2021-06-05 07:59:14,941 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526693776] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:14,941 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1151410434] [2021-06-05 07:59:14,941 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 131 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 131 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:14,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:59:14,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 22 conjunts are in the unsatisfiable core [2021-06-05 07:59:14,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:59:15,131 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:15,131 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1151410434] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:15,131 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:59:15,131 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2021-06-05 07:59:15,131 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088604780] [2021-06-05 07:59:15,132 INFO L462 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-06-05 07:59:15,132 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:59:15,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-06-05 07:59:15,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=424, Unknown=0, NotChecked=0, Total=506 [2021-06-05 07:59:15,132 INFO L87 Difference]: Start difference. First operand 3303 states and 9193 transitions. Second operand has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:15,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:59:15,714 INFO L93 Difference]: Finished difference Result 4321 states and 11432 transitions. [2021-06-05 07:59:15,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-05 07:59:15,714 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-06-05 07:59:15,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:59:15,718 INFO L225 Difference]: With dead ends: 4321 [2021-06-05 07:59:15,718 INFO L226 Difference]: Without dead ends: 4051 [2021-06-05 07:59:15,719 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 683 ImplicationChecksByTransitivity, 558.7ms TimeCoverageRelationStatistics Valid=747, Invalid=2223, Unknown=0, NotChecked=0, Total=2970 [2021-06-05 07:59:15,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4051 states. [2021-06-05 07:59:15,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4051 to 3378. [2021-06-05 07:59:15,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3378 states, 3377 states have (on average 2.788865857269766) internal successors, (9418), 3377 states have internal predecessors, (9418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:15,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3378 states to 3378 states and 9418 transitions. [2021-06-05 07:59:15,756 INFO L78 Accepts]: Start accepts. Automaton has 3378 states and 9418 transitions. Word has length 110 [2021-06-05 07:59:15,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:59:15,756 INFO L482 AbstractCegarLoop]: Abstraction has 3378 states and 9418 transitions. [2021-06-05 07:59:15,756 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:15,756 INFO L276 IsEmpty]: Start isEmpty. Operand 3378 states and 9418 transitions. [2021-06-05 07:59:15,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-06-05 07:59:15,758 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:59:15,758 INFO L521 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:59:15,958 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135,131 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:15,959 INFO L430 AbstractCegarLoop]: === Iteration 137 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:59:15,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:59:15,959 INFO L82 PathProgramCache]: Analyzing trace with hash 1516817731, now seen corresponding path program 128 times [2021-06-05 07:59:15,959 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:59:15,959 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195670062] [2021-06-05 07:59:15,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:59:15,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:59:16,091 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:16,091 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:59:16,091 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195670062] [2021-06-05 07:59:16,091 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195670062] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:16,091 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [445735145] [2021-06-05 07:59:16,091 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 132 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 132 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:16,145 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 07:59:16,145 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:59:16,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 22 conjunts are in the unsatisfiable core [2021-06-05 07:59:16,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:59:16,268 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:16,268 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [445735145] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:16,268 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:59:16,268 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2021-06-05 07:59:16,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063284937] [2021-06-05 07:59:16,268 INFO L462 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-06-05 07:59:16,268 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:59:16,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-06-05 07:59:16,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=374, Unknown=0, NotChecked=0, Total=462 [2021-06-05 07:59:16,269 INFO L87 Difference]: Start difference. First operand 3378 states and 9418 transitions. Second operand has 22 states, 22 states have (on average 5.090909090909091) internal successors, (112), 22 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:16,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:59:16,750 INFO L93 Difference]: Finished difference Result 4391 states and 11677 transitions. [2021-06-05 07:59:16,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-06-05 07:59:16,750 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.090909090909091) internal successors, (112), 22 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-06-05 07:59:16,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:59:16,754 INFO L225 Difference]: With dead ends: 4391 [2021-06-05 07:59:16,754 INFO L226 Difference]: Without dead ends: 4121 [2021-06-05 07:59:16,754 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 663 ImplicationChecksByTransitivity, 463.7ms TimeCoverageRelationStatistics Valid=734, Invalid=2022, Unknown=0, NotChecked=0, Total=2756 [2021-06-05 07:59:16,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4121 states. [2021-06-05 07:59:16,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4121 to 3453. [2021-06-05 07:59:16,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3453 states, 3452 states have (on average 2.7977983777520277) internal successors, (9658), 3452 states have internal predecessors, (9658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:16,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3453 states to 3453 states and 9658 transitions. [2021-06-05 07:59:16,790 INFO L78 Accepts]: Start accepts. Automaton has 3453 states and 9658 transitions. Word has length 110 [2021-06-05 07:59:16,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:59:16,790 INFO L482 AbstractCegarLoop]: Abstraction has 3453 states and 9658 transitions. [2021-06-05 07:59:16,790 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 5.090909090909091) internal successors, (112), 22 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:16,790 INFO L276 IsEmpty]: Start isEmpty. Operand 3453 states and 9658 transitions. [2021-06-05 07:59:16,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-06-05 07:59:16,793 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:59:16,793 INFO L521 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:59:16,993 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 132 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable136 [2021-06-05 07:59:16,993 INFO L430 AbstractCegarLoop]: === Iteration 138 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:59:16,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:59:16,994 INFO L82 PathProgramCache]: Analyzing trace with hash -198424557, now seen corresponding path program 129 times [2021-06-05 07:59:16,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:59:16,994 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838284502] [2021-06-05 07:59:16,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:59:16,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:59:17,124 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:17,124 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:59:17,124 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838284502] [2021-06-05 07:59:17,124 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838284502] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:17,125 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [530934729] [2021-06-05 07:59:17,125 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 133 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 133 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:17,184 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-06-05 07:59:17,184 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:59:17,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 22 conjunts are in the unsatisfiable core [2021-06-05 07:59:17,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:59:17,348 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:17,348 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [530934729] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:17,348 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:59:17,348 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2021-06-05 07:59:17,348 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786558353] [2021-06-05 07:59:17,348 INFO L462 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-06-05 07:59:17,348 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:59:17,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-06-05 07:59:17,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=416, Unknown=0, NotChecked=0, Total=506 [2021-06-05 07:59:17,349 INFO L87 Difference]: Start difference. First operand 3453 states and 9658 transitions. Second operand has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:18,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:59:18,101 INFO L93 Difference]: Finished difference Result 4969 states and 13303 transitions. [2021-06-05 07:59:18,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-05 07:59:18,101 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-06-05 07:59:18,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:59:18,105 INFO L225 Difference]: With dead ends: 4969 [2021-06-05 07:59:18,106 INFO L226 Difference]: Without dead ends: 4346 [2021-06-05 07:59:18,106 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 832 ImplicationChecksByTransitivity, 680.0ms TimeCoverageRelationStatistics Valid=866, Invalid=2556, Unknown=0, NotChecked=0, Total=3422 [2021-06-05 07:59:18,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4346 states. [2021-06-05 07:59:18,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4346 to 3528. [2021-06-05 07:59:18,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3528 states, 3527 states have (on average 2.8035157357527645) internal successors, (9888), 3527 states have internal predecessors, (9888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:18,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3528 states to 3528 states and 9888 transitions. [2021-06-05 07:59:18,142 INFO L78 Accepts]: Start accepts. Automaton has 3528 states and 9888 transitions. Word has length 110 [2021-06-05 07:59:18,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:59:18,142 INFO L482 AbstractCegarLoop]: Abstraction has 3528 states and 9888 transitions. [2021-06-05 07:59:18,142 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:18,142 INFO L276 IsEmpty]: Start isEmpty. Operand 3528 states and 9888 transitions. [2021-06-05 07:59:18,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-06-05 07:59:18,145 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:59:18,145 INFO L521 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:59:18,345 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 133 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable137 [2021-06-05 07:59:18,346 INFO L430 AbstractCegarLoop]: === Iteration 139 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:59:18,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:59:18,346 INFO L82 PathProgramCache]: Analyzing trace with hash -1231072159, now seen corresponding path program 130 times [2021-06-05 07:59:18,346 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:59:18,346 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971434840] [2021-06-05 07:59:18,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:59:18,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:59:18,492 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:18,492 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:59:18,492 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971434840] [2021-06-05 07:59:18,492 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971434840] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:18,492 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [319556951] [2021-06-05 07:59:18,492 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 134 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 134 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:18,548 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 07:59:18,548 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:59:18,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 22 conjunts are in the unsatisfiable core [2021-06-05 07:59:18,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:59:18,668 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:18,669 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [319556951] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:18,669 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:59:18,669 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2021-06-05 07:59:18,669 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485991332] [2021-06-05 07:59:18,669 INFO L462 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-06-05 07:59:18,669 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:59:18,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-06-05 07:59:18,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2021-06-05 07:59:18,669 INFO L87 Difference]: Start difference. First operand 3528 states and 9888 transitions. Second operand has 22 states, 22 states have (on average 5.090909090909091) internal successors, (112), 22 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:19,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:59:19,193 INFO L93 Difference]: Finished difference Result 5198 states and 14021 transitions. [2021-06-05 07:59:19,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-05 07:59:19,194 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.090909090909091) internal successors, (112), 22 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-06-05 07:59:19,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:59:19,198 INFO L225 Difference]: With dead ends: 5198 [2021-06-05 07:59:19,198 INFO L226 Difference]: Without dead ends: 4928 [2021-06-05 07:59:19,199 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 741 ImplicationChecksByTransitivity, 487.2ms TimeCoverageRelationStatistics Valid=839, Invalid=2131, Unknown=0, NotChecked=0, Total=2970 [2021-06-05 07:59:19,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4928 states. [2021-06-05 07:59:19,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4928 to 3708. [2021-06-05 07:59:19,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3708 states, 3707 states have (on average 2.8181818181818183) internal successors, (10447), 3707 states have internal predecessors, (10447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:19,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3708 states to 3708 states and 10447 transitions. [2021-06-05 07:59:19,239 INFO L78 Accepts]: Start accepts. Automaton has 3708 states and 10447 transitions. Word has length 110 [2021-06-05 07:59:19,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:59:19,239 INFO L482 AbstractCegarLoop]: Abstraction has 3708 states and 10447 transitions. [2021-06-05 07:59:19,239 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 5.090909090909091) internal successors, (112), 22 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:19,239 INFO L276 IsEmpty]: Start isEmpty. Operand 3708 states and 10447 transitions. [2021-06-05 07:59:19,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-06-05 07:59:19,241 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:59:19,241 INFO L521 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:59:19,445 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 134 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable138 [2021-06-05 07:59:19,445 INFO L430 AbstractCegarLoop]: === Iteration 140 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:59:19,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:59:19,445 INFO L82 PathProgramCache]: Analyzing trace with hash -1208728909, now seen corresponding path program 131 times [2021-06-05 07:59:19,445 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:59:19,445 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125438263] [2021-06-05 07:59:19,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:59:19,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:59:19,574 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:19,574 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:59:19,574 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125438263] [2021-06-05 07:59:19,574 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125438263] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:19,574 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1821616948] [2021-06-05 07:59:19,574 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 135 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 135 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:19,629 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2021-06-05 07:59:19,629 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:59:19,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 22 conjunts are in the unsatisfiable core [2021-06-05 07:59:19,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:59:19,762 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:19,762 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1821616948] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:19,762 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:59:19,762 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2021-06-05 07:59:19,762 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465398219] [2021-06-05 07:59:19,762 INFO L462 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-06-05 07:59:19,763 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:59:19,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-06-05 07:59:19,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=404, Unknown=0, NotChecked=0, Total=506 [2021-06-05 07:59:19,763 INFO L87 Difference]: Start difference. First operand 3708 states and 10447 transitions. Second operand has 23 states, 23 states have (on average 4.913043478260869) internal successors, (113), 23 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:20,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:59:20,475 INFO L93 Difference]: Finished difference Result 5021 states and 13521 transitions. [2021-06-05 07:59:20,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-05 07:59:20,475 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.913043478260869) internal successors, (113), 23 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-06-05 07:59:20,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:59:20,480 INFO L225 Difference]: With dead ends: 5021 [2021-06-05 07:59:20,480 INFO L226 Difference]: Without dead ends: 4446 [2021-06-05 07:59:20,481 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 966 ImplicationChecksByTransitivity, 668.6ms TimeCoverageRelationStatistics Valid=997, Invalid=2785, Unknown=0, NotChecked=0, Total=3782 [2021-06-05 07:59:20,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4446 states. [2021-06-05 07:59:20,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4446 to 2603. [2021-06-05 07:59:20,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2603 states, 2602 states have (on average 2.735588009223674) internal successors, (7118), 2602 states have internal predecessors, (7118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:20,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2603 states to 2603 states and 7118 transitions. [2021-06-05 07:59:20,515 INFO L78 Accepts]: Start accepts. Automaton has 2603 states and 7118 transitions. Word has length 110 [2021-06-05 07:59:20,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:59:20,515 INFO L482 AbstractCegarLoop]: Abstraction has 2603 states and 7118 transitions. [2021-06-05 07:59:20,515 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 4.913043478260869) internal successors, (113), 23 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:20,515 INFO L276 IsEmpty]: Start isEmpty. Operand 2603 states and 7118 transitions. [2021-06-05 07:59:20,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-06-05 07:59:20,517 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:59:20,517 INFO L521 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:59:20,717 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139,135 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:20,717 INFO L430 AbstractCegarLoop]: === Iteration 141 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:59:20,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:59:20,718 INFO L82 PathProgramCache]: Analyzing trace with hash -207372468, now seen corresponding path program 132 times [2021-06-05 07:59:20,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:59:20,718 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721928130] [2021-06-05 07:59:20,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:59:20,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:59:20,887 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:20,887 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:59:20,887 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721928130] [2021-06-05 07:59:20,887 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721928130] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:20,887 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1452372545] [2021-06-05 07:59:20,888 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 136 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 136 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:20,965 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2021-06-05 07:59:20,965 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:59:20,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 23 conjunts are in the unsatisfiable core [2021-06-05 07:59:20,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:59:21,092 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:21,093 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1452372545] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:21,093 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:59:21,093 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2021-06-05 07:59:21,093 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339772205] [2021-06-05 07:59:21,093 INFO L462 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-06-05 07:59:21,093 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:59:21,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-06-05 07:59:21,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2021-06-05 07:59:21,093 INFO L87 Difference]: Start difference. First operand 2603 states and 7118 transitions. Second operand has 22 states, 22 states have (on average 5.2272727272727275) internal successors, (115), 22 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:21,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:59:21,435 INFO L93 Difference]: Finished difference Result 3821 states and 9757 transitions. [2021-06-05 07:59:21,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-05 07:59:21,435 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.2272727272727275) internal successors, (115), 22 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-06-05 07:59:21,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:59:21,438 INFO L225 Difference]: With dead ends: 3821 [2021-06-05 07:59:21,438 INFO L226 Difference]: Without dead ends: 3551 [2021-06-05 07:59:21,439 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 359.6ms TimeCoverageRelationStatistics Valid=479, Invalid=1413, Unknown=0, NotChecked=0, Total=1892 [2021-06-05 07:59:21,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3551 states. [2021-06-05 07:59:21,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3551 to 2678. [2021-06-05 07:59:21,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2678 states, 2677 states have (on average 2.742995890922675) internal successors, (7343), 2677 states have internal predecessors, (7343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:21,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2678 states to 2678 states and 7343 transitions. [2021-06-05 07:59:21,465 INFO L78 Accepts]: Start accepts. Automaton has 2678 states and 7343 transitions. Word has length 115 [2021-06-05 07:59:21,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:59:21,465 INFO L482 AbstractCegarLoop]: Abstraction has 2678 states and 7343 transitions. [2021-06-05 07:59:21,465 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 5.2272727272727275) internal successors, (115), 22 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:21,465 INFO L276 IsEmpty]: Start isEmpty. Operand 2678 states and 7343 transitions. [2021-06-05 07:59:21,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-06-05 07:59:21,467 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:59:21,467 INFO L521 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:59:21,667 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140,136 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:21,667 INFO L430 AbstractCegarLoop]: === Iteration 142 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:59:21,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:59:21,668 INFO L82 PathProgramCache]: Analyzing trace with hash -587816420, now seen corresponding path program 133 times [2021-06-05 07:59:21,668 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:59:21,668 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471617538] [2021-06-05 07:59:21,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:59:21,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:59:21,845 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:21,845 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:59:21,845 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471617538] [2021-06-05 07:59:21,845 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471617538] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:21,845 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [445140106] [2021-06-05 07:59:21,845 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 137 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 137 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:21,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:59:21,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 23 conjunts are in the unsatisfiable core [2021-06-05 07:59:21,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:59:22,059 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:22,059 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [445140106] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:22,060 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:59:22,060 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2021-06-05 07:59:22,060 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107569050] [2021-06-05 07:59:22,060 INFO L462 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-06-05 07:59:22,060 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:59:22,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-06-05 07:59:22,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=411, Unknown=0, NotChecked=0, Total=506 [2021-06-05 07:59:22,060 INFO L87 Difference]: Start difference. First operand 2678 states and 7343 transitions. Second operand has 23 states, 23 states have (on average 5.086956521739131) internal successors, (117), 23 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:22,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:59:22,427 INFO L93 Difference]: Finished difference Result 4241 states and 10672 transitions. [2021-06-05 07:59:22,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-06-05 07:59:22,427 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.086956521739131) internal successors, (117), 23 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-06-05 07:59:22,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:59:22,431 INFO L225 Difference]: With dead ends: 4241 [2021-06-05 07:59:22,431 INFO L226 Difference]: Without dead ends: 3971 [2021-06-05 07:59:22,431 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 409 ImplicationChecksByTransitivity, 416.5ms TimeCoverageRelationStatistics Valid=529, Invalid=1633, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 07:59:22,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3971 states. [2021-06-05 07:59:22,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3971 to 2753. [2021-06-05 07:59:22,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2753 states, 2752 states have (on average 2.75) internal successors, (7568), 2752 states have internal predecessors, (7568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:22,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2753 states to 2753 states and 7568 transitions. [2021-06-05 07:59:22,460 INFO L78 Accepts]: Start accepts. Automaton has 2753 states and 7568 transitions. Word has length 115 [2021-06-05 07:59:22,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:59:22,460 INFO L482 AbstractCegarLoop]: Abstraction has 2753 states and 7568 transitions. [2021-06-05 07:59:22,460 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 5.086956521739131) internal successors, (117), 23 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:22,460 INFO L276 IsEmpty]: Start isEmpty. Operand 2753 states and 7568 transitions. [2021-06-05 07:59:22,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-06-05 07:59:22,462 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:59:22,462 INFO L521 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:59:22,662 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141,137 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:22,663 INFO L430 AbstractCegarLoop]: === Iteration 143 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:59:22,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:59:22,663 INFO L82 PathProgramCache]: Analyzing trace with hash 36558730, now seen corresponding path program 134 times [2021-06-05 07:59:22,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:59:22,663 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090482410] [2021-06-05 07:59:22,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:59:22,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:59:22,853 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:22,853 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:59:22,853 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090482410] [2021-06-05 07:59:22,853 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090482410] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:22,853 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1480372374] [2021-06-05 07:59:22,853 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 138 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 138 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:22,926 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 07:59:22,926 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:59:22,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 23 conjunts are in the unsatisfiable core [2021-06-05 07:59:22,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:59:23,090 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:23,090 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1480372374] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:23,090 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:59:23,090 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2021-06-05 07:59:23,090 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118671535] [2021-06-05 07:59:23,091 INFO L462 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-06-05 07:59:23,091 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:59:23,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-06-05 07:59:23,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=374, Unknown=0, NotChecked=0, Total=462 [2021-06-05 07:59:23,091 INFO L87 Difference]: Start difference. First operand 2753 states and 7568 transitions. Second operand has 22 states, 22 states have (on average 5.2272727272727275) internal successors, (115), 22 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:23,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:59:23,458 INFO L93 Difference]: Finished difference Result 4271 states and 10807 transitions. [2021-06-05 07:59:23,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-06-05 07:59:23,458 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.2272727272727275) internal successors, (115), 22 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-06-05 07:59:23,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:59:23,462 INFO L225 Difference]: With dead ends: 4271 [2021-06-05 07:59:23,462 INFO L226 Difference]: Without dead ends: 4001 [2021-06-05 07:59:23,463 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 452 ImplicationChecksByTransitivity, 409.8ms TimeCoverageRelationStatistics Valid=531, Invalid=1631, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 07:59:23,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4001 states. [2021-06-05 07:59:23,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4001 to 2828. [2021-06-05 07:59:23,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2828 states, 2827 states have (on average 2.75663247258578) internal successors, (7793), 2827 states have internal predecessors, (7793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:23,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2828 states to 2828 states and 7793 transitions. [2021-06-05 07:59:23,492 INFO L78 Accepts]: Start accepts. Automaton has 2828 states and 7793 transitions. Word has length 115 [2021-06-05 07:59:23,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:59:23,492 INFO L482 AbstractCegarLoop]: Abstraction has 2828 states and 7793 transitions. [2021-06-05 07:59:23,492 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 5.2272727272727275) internal successors, (115), 22 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:23,492 INFO L276 IsEmpty]: Start isEmpty. Operand 2828 states and 7793 transitions. [2021-06-05 07:59:23,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-06-05 07:59:23,494 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:59:23,494 INFO L521 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:59:23,694 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 138 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable142 [2021-06-05 07:59:23,695 INFO L430 AbstractCegarLoop]: === Iteration 144 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:59:23,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:59:23,695 INFO L82 PathProgramCache]: Analyzing trace with hash 845610586, now seen corresponding path program 135 times [2021-06-05 07:59:23,695 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:59:23,695 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129362144] [2021-06-05 07:59:23,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:59:23,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:59:23,884 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:23,884 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:59:23,884 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129362144] [2021-06-05 07:59:23,884 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129362144] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:23,885 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [161088063] [2021-06-05 07:59:23,885 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 139 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 139 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:23,944 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-06-05 07:59:23,944 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:59:23,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 23 conjunts are in the unsatisfiable core [2021-06-05 07:59:23,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:59:24,093 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:24,093 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [161088063] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:24,093 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:59:24,093 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2021-06-05 07:59:24,093 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019274088] [2021-06-05 07:59:24,094 INFO L462 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-06-05 07:59:24,094 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:59:24,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-06-05 07:59:24,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2021-06-05 07:59:24,094 INFO L87 Difference]: Start difference. First operand 2828 states and 7793 transitions. Second operand has 23 states, 23 states have (on average 5.086956521739131) internal successors, (117), 23 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:24,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:59:24,522 INFO L93 Difference]: Finished difference Result 4296 states and 10932 transitions. [2021-06-05 07:59:24,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-06-05 07:59:24,522 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.086956521739131) internal successors, (117), 23 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-06-05 07:59:24,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:59:24,526 INFO L225 Difference]: With dead ends: 4296 [2021-06-05 07:59:24,526 INFO L226 Difference]: Without dead ends: 4026 [2021-06-05 07:59:24,526 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 468 ImplicationChecksByTransitivity, 469.5ms TimeCoverageRelationStatistics Valid=553, Invalid=1799, Unknown=0, NotChecked=0, Total=2352 [2021-06-05 07:59:24,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4026 states. [2021-06-05 07:59:24,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4026 to 2903. [2021-06-05 07:59:24,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2903 states, 2902 states have (on average 2.7629221226740177) internal successors, (8018), 2902 states have internal predecessors, (8018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:24,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2903 states to 2903 states and 8018 transitions. [2021-06-05 07:59:24,555 INFO L78 Accepts]: Start accepts. Automaton has 2903 states and 8018 transitions. Word has length 115 [2021-06-05 07:59:24,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:59:24,555 INFO L482 AbstractCegarLoop]: Abstraction has 2903 states and 8018 transitions. [2021-06-05 07:59:24,555 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 5.086956521739131) internal successors, (117), 23 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:24,555 INFO L276 IsEmpty]: Start isEmpty. Operand 2903 states and 8018 transitions. [2021-06-05 07:59:24,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-06-05 07:59:24,557 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:59:24,557 INFO L521 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:59:24,757 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143,139 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:24,758 INFO L430 AbstractCegarLoop]: === Iteration 145 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:59:24,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:59:24,758 INFO L82 PathProgramCache]: Analyzing trace with hash -546339512, now seen corresponding path program 136 times [2021-06-05 07:59:24,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:59:24,758 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480994132] [2021-06-05 07:59:24,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:59:24,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:59:24,911 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:24,911 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:59:24,911 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480994132] [2021-06-05 07:59:24,911 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480994132] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:24,911 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [545766396] [2021-06-05 07:59:24,912 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 140 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 140 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:24,965 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 07:59:24,966 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:59:24,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 23 conjunts are in the unsatisfiable core [2021-06-05 07:59:24,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:59:25,108 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:25,108 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [545766396] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:25,108 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:59:25,108 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2021-06-05 07:59:25,108 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545296752] [2021-06-05 07:59:25,108 INFO L462 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-06-05 07:59:25,108 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:59:25,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-06-05 07:59:25,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2021-06-05 07:59:25,109 INFO L87 Difference]: Start difference. First operand 2903 states and 8018 transitions. Second operand has 22 states, 22 states have (on average 5.2272727272727275) internal successors, (115), 22 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:25,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:59:25,497 INFO L93 Difference]: Finished difference Result 4321 states and 11057 transitions. [2021-06-05 07:59:25,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-06-05 07:59:25,497 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.2272727272727275) internal successors, (115), 22 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-06-05 07:59:25,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:59:25,501 INFO L225 Difference]: With dead ends: 4321 [2021-06-05 07:59:25,501 INFO L226 Difference]: Without dead ends: 4051 [2021-06-05 07:59:25,501 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 521 ImplicationChecksByTransitivity, 399.3ms TimeCoverageRelationStatistics Valid=569, Invalid=1783, Unknown=0, NotChecked=0, Total=2352 [2021-06-05 07:59:25,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4051 states. [2021-06-05 07:59:25,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4051 to 2978. [2021-06-05 07:59:25,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2978 states, 2977 states have (on average 2.7688948605979173) internal successors, (8243), 2977 states have internal predecessors, (8243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:25,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2978 states to 2978 states and 8243 transitions. [2021-06-05 07:59:25,533 INFO L78 Accepts]: Start accepts. Automaton has 2978 states and 8243 transitions. Word has length 115 [2021-06-05 07:59:25,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:59:25,533 INFO L482 AbstractCegarLoop]: Abstraction has 2978 states and 8243 transitions. [2021-06-05 07:59:25,534 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 5.2272727272727275) internal successors, (115), 22 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:25,534 INFO L276 IsEmpty]: Start isEmpty. Operand 2978 states and 8243 transitions. [2021-06-05 07:59:25,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-06-05 07:59:25,536 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:59:25,536 INFO L521 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:59:25,736 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 140 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable144 [2021-06-05 07:59:25,736 INFO L430 AbstractCegarLoop]: === Iteration 146 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:59:25,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:59:25,737 INFO L82 PathProgramCache]: Analyzing trace with hash -791416808, now seen corresponding path program 137 times [2021-06-05 07:59:25,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:59:25,737 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239402811] [2021-06-05 07:59:25,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:59:25,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:59:25,898 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:25,898 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:59:25,898 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239402811] [2021-06-05 07:59:25,898 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239402811] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:25,899 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1953177284] [2021-06-05 07:59:25,899 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 141 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 141 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:25,956 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2021-06-05 07:59:25,957 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:59:25,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 23 conjunts are in the unsatisfiable core [2021-06-05 07:59:25,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:59:26,098 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:26,098 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1953177284] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:26,098 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:59:26,098 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2021-06-05 07:59:26,099 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130462157] [2021-06-05 07:59:26,099 INFO L462 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-06-05 07:59:26,099 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:59:26,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-06-05 07:59:26,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=427, Unknown=0, NotChecked=0, Total=506 [2021-06-05 07:59:26,099 INFO L87 Difference]: Start difference. First operand 2978 states and 8243 transitions. Second operand has 23 states, 23 states have (on average 5.086956521739131) internal successors, (117), 23 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:26,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:59:26,619 INFO L93 Difference]: Finished difference Result 4346 states and 11182 transitions. [2021-06-05 07:59:26,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-06-05 07:59:26,619 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.086956521739131) internal successors, (117), 23 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-06-05 07:59:26,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:59:26,623 INFO L225 Difference]: With dead ends: 4346 [2021-06-05 07:59:26,623 INFO L226 Difference]: Without dead ends: 4076 [2021-06-05 07:59:26,624 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 540 ImplicationChecksByTransitivity, 493.3ms TimeCoverageRelationStatistics Valid=593, Invalid=1957, Unknown=0, NotChecked=0, Total=2550 [2021-06-05 07:59:26,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4076 states. [2021-06-05 07:59:26,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4076 to 3053. [2021-06-05 07:59:26,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3053 states, 3052 states have (on average 2.7745740498034075) internal successors, (8468), 3052 states have internal predecessors, (8468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:26,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3053 states to 3053 states and 8468 transitions. [2021-06-05 07:59:26,656 INFO L78 Accepts]: Start accepts. Automaton has 3053 states and 8468 transitions. Word has length 115 [2021-06-05 07:59:26,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:59:26,656 INFO L482 AbstractCegarLoop]: Abstraction has 3053 states and 8468 transitions. [2021-06-05 07:59:26,656 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 5.086956521739131) internal successors, (117), 23 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:26,656 INFO L276 IsEmpty]: Start isEmpty. Operand 3053 states and 8468 transitions. [2021-06-05 07:59:26,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-06-05 07:59:26,659 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:59:26,659 INFO L521 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:59:26,875 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145,141 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:26,875 INFO L430 AbstractCegarLoop]: === Iteration 147 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:59:26,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:59:26,875 INFO L82 PathProgramCache]: Analyzing trace with hash -1168267130, now seen corresponding path program 138 times [2021-06-05 07:59:26,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:59:26,875 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459094084] [2021-06-05 07:59:26,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:59:26,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:59:27,021 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:27,021 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:59:27,021 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459094084] [2021-06-05 07:59:27,021 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459094084] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:27,021 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [862429926] [2021-06-05 07:59:27,021 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 142 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 142 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:27,081 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2021-06-05 07:59:27,082 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:59:27,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 23 conjunts are in the unsatisfiable core [2021-06-05 07:59:27,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:59:27,223 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:27,224 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [862429926] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:27,224 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:59:27,224 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2021-06-05 07:59:27,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197205601] [2021-06-05 07:59:27,224 INFO L462 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-06-05 07:59:27,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:59:27,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-06-05 07:59:27,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=384, Unknown=0, NotChecked=0, Total=462 [2021-06-05 07:59:27,224 INFO L87 Difference]: Start difference. First operand 3053 states and 8468 transitions. Second operand has 22 states, 22 states have (on average 5.2272727272727275) internal successors, (115), 22 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:27,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:59:27,647 INFO L93 Difference]: Finished difference Result 4371 states and 11307 transitions. [2021-06-05 07:59:27,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-05 07:59:27,647 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.2272727272727275) internal successors, (115), 22 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-06-05 07:59:27,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:59:27,651 INFO L225 Difference]: With dead ends: 4371 [2021-06-05 07:59:27,651 INFO L226 Difference]: Without dead ends: 4101 [2021-06-05 07:59:27,651 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 598 ImplicationChecksByTransitivity, 418.6ms TimeCoverageRelationStatistics Valid=623, Invalid=1927, Unknown=0, NotChecked=0, Total=2550 [2021-06-05 07:59:27,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4101 states. [2021-06-05 07:59:27,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4101 to 3128. [2021-06-05 07:59:27,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3128 states, 3127 states have (on average 2.7799808122801406) internal successors, (8693), 3127 states have internal predecessors, (8693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:27,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3128 states to 3128 states and 8693 transitions. [2021-06-05 07:59:27,685 INFO L78 Accepts]: Start accepts. Automaton has 3128 states and 8693 transitions. Word has length 115 [2021-06-05 07:59:27,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:59:27,685 INFO L482 AbstractCegarLoop]: Abstraction has 3128 states and 8693 transitions. [2021-06-05 07:59:27,685 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 5.2272727272727275) internal successors, (115), 22 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:27,685 INFO L276 IsEmpty]: Start isEmpty. Operand 3128 states and 8693 transitions. [2021-06-05 07:59:27,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-06-05 07:59:27,687 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:59:27,687 INFO L521 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:59:27,888 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 142 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable146 [2021-06-05 07:59:27,888 INFO L430 AbstractCegarLoop]: === Iteration 148 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:59:27,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:59:27,888 INFO L82 PathProgramCache]: Analyzing trace with hash 158488406, now seen corresponding path program 139 times [2021-06-05 07:59:27,888 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:59:27,888 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682732356] [2021-06-05 07:59:27,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:59:27,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:59:28,037 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:28,037 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:59:28,037 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682732356] [2021-06-05 07:59:28,037 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682732356] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:28,037 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1901593368] [2021-06-05 07:59:28,037 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 143 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 143 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:28,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:59:28,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 23 conjunts are in the unsatisfiable core [2021-06-05 07:59:28,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:59:28,223 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:28,223 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1901593368] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:28,223 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:59:28,223 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2021-06-05 07:59:28,223 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957662432] [2021-06-05 07:59:28,223 INFO L462 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-06-05 07:59:28,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:59:28,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-06-05 07:59:28,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=429, Unknown=0, NotChecked=0, Total=506 [2021-06-05 07:59:28,224 INFO L87 Difference]: Start difference. First operand 3128 states and 8693 transitions. Second operand has 23 states, 23 states have (on average 5.086956521739131) internal successors, (117), 23 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:28,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:59:28,743 INFO L93 Difference]: Finished difference Result 4396 states and 11432 transitions. [2021-06-05 07:59:28,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-06-05 07:59:28,744 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.086956521739131) internal successors, (117), 23 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-06-05 07:59:28,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:59:28,748 INFO L225 Difference]: With dead ends: 4396 [2021-06-05 07:59:28,748 INFO L226 Difference]: Without dead ends: 4126 [2021-06-05 07:59:28,748 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 620 ImplicationChecksByTransitivity, 507.7ms TimeCoverageRelationStatistics Valid=649, Invalid=2107, Unknown=0, NotChecked=0, Total=2756 [2021-06-05 07:59:28,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4126 states. [2021-06-05 07:59:28,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4126 to 3203. [2021-06-05 07:59:28,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3203 states, 3202 states have (on average 2.7851342910680823) internal successors, (8918), 3202 states have internal predecessors, (8918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:28,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3203 states to 3203 states and 8918 transitions. [2021-06-05 07:59:28,784 INFO L78 Accepts]: Start accepts. Automaton has 3203 states and 8918 transitions. Word has length 115 [2021-06-05 07:59:28,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:59:28,784 INFO L482 AbstractCegarLoop]: Abstraction has 3203 states and 8918 transitions. [2021-06-05 07:59:28,784 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 5.086956521739131) internal successors, (117), 23 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:28,784 INFO L276 IsEmpty]: Start isEmpty. Operand 3203 states and 8918 transitions. [2021-06-05 07:59:28,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-06-05 07:59:28,787 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:59:28,787 INFO L521 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:59:28,987 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 143 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable147 [2021-06-05 07:59:28,987 INFO L430 AbstractCegarLoop]: === Iteration 149 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:59:28,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:59:28,987 INFO L82 PathProgramCache]: Analyzing trace with hash 612704580, now seen corresponding path program 140 times [2021-06-05 07:59:28,988 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:59:28,988 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072820926] [2021-06-05 07:59:28,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:59:28,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:59:29,130 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:29,130 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:59:29,131 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072820926] [2021-06-05 07:59:29,131 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072820926] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:29,131 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [167909481] [2021-06-05 07:59:29,131 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 144 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 144 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:29,185 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 07:59:29,185 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:59:29,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 23 conjunts are in the unsatisfiable core [2021-06-05 07:59:29,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:59:29,338 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:29,338 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [167909481] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:29,338 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:59:29,338 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2021-06-05 07:59:29,338 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358404019] [2021-06-05 07:59:29,338 INFO L462 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-06-05 07:59:29,338 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:59:29,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-06-05 07:59:29,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=383, Unknown=0, NotChecked=0, Total=462 [2021-06-05 07:59:29,339 INFO L87 Difference]: Start difference. First operand 3203 states and 8918 transitions. Second operand has 22 states, 22 states have (on average 5.2272727272727275) internal successors, (115), 22 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:29,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:59:29,800 INFO L93 Difference]: Finished difference Result 4421 states and 11557 transitions. [2021-06-05 07:59:29,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-06-05 07:59:29,800 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.2272727272727275) internal successors, (115), 22 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-06-05 07:59:29,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:59:29,804 INFO L225 Difference]: With dead ends: 4421 [2021-06-05 07:59:29,804 INFO L226 Difference]: Without dead ends: 4151 [2021-06-05 07:59:29,804 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 679 ImplicationChecksByTransitivity, 440.9ms TimeCoverageRelationStatistics Valid=693, Invalid=2063, Unknown=0, NotChecked=0, Total=2756 [2021-06-05 07:59:29,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4151 states. [2021-06-05 07:59:29,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4151 to 3278. [2021-06-05 07:59:29,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3278 states, 3277 states have (on average 2.790051876716509) internal successors, (9143), 3277 states have internal predecessors, (9143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:29,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3278 states to 3278 states and 9143 transitions. [2021-06-05 07:59:29,839 INFO L78 Accepts]: Start accepts. Automaton has 3278 states and 9143 transitions. Word has length 115 [2021-06-05 07:59:29,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:59:29,839 INFO L482 AbstractCegarLoop]: Abstraction has 3278 states and 9143 transitions. [2021-06-05 07:59:29,839 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 5.2272727272727275) internal successors, (115), 22 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:29,839 INFO L276 IsEmpty]: Start isEmpty. Operand 3278 states and 9143 transitions. [2021-06-05 07:59:29,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-06-05 07:59:29,841 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:59:29,841 INFO L521 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:59:30,042 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148,144 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:30,042 INFO L430 AbstractCegarLoop]: === Iteration 150 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:59:30,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:59:30,042 INFO L82 PathProgramCache]: Analyzing trace with hash 1611600916, now seen corresponding path program 141 times [2021-06-05 07:59:30,042 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:59:30,042 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650878793] [2021-06-05 07:59:30,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:59:30,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:59:30,187 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:30,187 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:59:30,187 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650878793] [2021-06-05 07:59:30,187 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650878793] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:30,187 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1846126462] [2021-06-05 07:59:30,187 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 145 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 145 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:30,250 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-06-05 07:59:30,250 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:59:30,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 23 conjunts are in the unsatisfiable core [2021-06-05 07:59:30,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:59:30,382 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:30,382 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1846126462] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:30,382 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:59:30,383 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2021-06-05 07:59:30,383 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933788633] [2021-06-05 07:59:30,383 INFO L462 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-06-05 07:59:30,383 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:59:30,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-06-05 07:59:30,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=427, Unknown=0, NotChecked=0, Total=506 [2021-06-05 07:59:30,383 INFO L87 Difference]: Start difference. First operand 3278 states and 9143 transitions. Second operand has 23 states, 23 states have (on average 5.086956521739131) internal successors, (117), 23 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:30,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:59:30,950 INFO L93 Difference]: Finished difference Result 4446 states and 11682 transitions. [2021-06-05 07:59:30,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-05 07:59:30,951 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.086956521739131) internal successors, (117), 23 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-06-05 07:59:30,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:59:30,955 INFO L225 Difference]: With dead ends: 4446 [2021-06-05 07:59:30,955 INFO L226 Difference]: Without dead ends: 4176 [2021-06-05 07:59:30,955 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 704 ImplicationChecksByTransitivity, 541.2ms TimeCoverageRelationStatistics Valid=721, Invalid=2249, Unknown=0, NotChecked=0, Total=2970 [2021-06-05 07:59:30,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4176 states. [2021-06-05 07:59:30,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4176 to 3353. [2021-06-05 07:59:30,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3353 states, 3352 states have (on average 2.7947494033412887) internal successors, (9368), 3352 states have internal predecessors, (9368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:30,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3353 states to 3353 states and 9368 transitions. [2021-06-05 07:59:30,991 INFO L78 Accepts]: Start accepts. Automaton has 3353 states and 9368 transitions. Word has length 115 [2021-06-05 07:59:30,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:59:30,991 INFO L482 AbstractCegarLoop]: Abstraction has 3353 states and 9368 transitions. [2021-06-05 07:59:30,991 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 5.086956521739131) internal successors, (117), 23 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:30,991 INFO L276 IsEmpty]: Start isEmpty. Operand 3353 states and 9368 transitions. [2021-06-05 07:59:30,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-06-05 07:59:30,994 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:59:30,994 INFO L521 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:59:31,196 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 145 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable149 [2021-06-05 07:59:31,197 INFO L430 AbstractCegarLoop]: === Iteration 151 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:59:31,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:59:31,197 INFO L82 PathProgramCache]: Analyzing trace with hash -267726974, now seen corresponding path program 142 times [2021-06-05 07:59:31,197 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:59:31,197 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597789792] [2021-06-05 07:59:31,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:59:31,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:59:31,356 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:31,356 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:59:31,356 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597789792] [2021-06-05 07:59:31,356 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597789792] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:31,356 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1581446817] [2021-06-05 07:59:31,356 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 146 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 146 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:31,409 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 07:59:31,410 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:59:31,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 23 conjunts are in the unsatisfiable core [2021-06-05 07:59:31,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:59:31,528 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:31,528 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1581446817] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:31,528 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:59:31,528 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2021-06-05 07:59:31,528 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780947141] [2021-06-05 07:59:31,529 INFO L462 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-06-05 07:59:31,529 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:59:31,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-06-05 07:59:31,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=378, Unknown=0, NotChecked=0, Total=462 [2021-06-05 07:59:31,529 INFO L87 Difference]: Start difference. First operand 3353 states and 9368 transitions. Second operand has 22 states, 22 states have (on average 5.2272727272727275) internal successors, (115), 22 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:32,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:59:32,008 INFO L93 Difference]: Finished difference Result 4471 states and 11807 transitions. [2021-06-05 07:59:32,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-05 07:59:32,009 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.2272727272727275) internal successors, (115), 22 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-06-05 07:59:32,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:59:32,013 INFO L225 Difference]: With dead ends: 4471 [2021-06-05 07:59:32,013 INFO L226 Difference]: Without dead ends: 4201 [2021-06-05 07:59:32,013 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 764 ImplicationChecksByTransitivity, 479.4ms TimeCoverageRelationStatistics Valid=779, Invalid=2191, Unknown=0, NotChecked=0, Total=2970 [2021-06-05 07:59:32,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4201 states. [2021-06-05 07:59:32,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4201 to 3428. [2021-06-05 07:59:32,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3428 states, 3427 states have (on average 2.7992413189378467) internal successors, (9593), 3427 states have internal predecessors, (9593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:32,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3428 states to 3428 states and 9593 transitions. [2021-06-05 07:59:32,052 INFO L78 Accepts]: Start accepts. Automaton has 3428 states and 9593 transitions. Word has length 115 [2021-06-05 07:59:32,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:59:32,052 INFO L482 AbstractCegarLoop]: Abstraction has 3428 states and 9593 transitions. [2021-06-05 07:59:32,052 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 5.2272727272727275) internal successors, (115), 22 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:32,052 INFO L276 IsEmpty]: Start isEmpty. Operand 3428 states and 9593 transitions. [2021-06-05 07:59:32,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-06-05 07:59:32,055 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:59:32,055 INFO L521 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:59:32,255 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150,146 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:32,255 INFO L430 AbstractCegarLoop]: === Iteration 152 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:59:32,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:59:32,256 INFO L82 PathProgramCache]: Analyzing trace with hash 1762592338, now seen corresponding path program 143 times [2021-06-05 07:59:32,256 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:59:32,256 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514160655] [2021-06-05 07:59:32,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:59:32,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:59:32,398 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:32,399 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:59:32,399 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514160655] [2021-06-05 07:59:32,399 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514160655] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:32,399 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1742580685] [2021-06-05 07:59:32,399 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 147 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 147 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:32,454 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2021-06-05 07:59:32,454 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:59:32,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 23 conjunts are in the unsatisfiable core [2021-06-05 07:59:32,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:59:32,585 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:32,586 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1742580685] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:32,586 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:59:32,586 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2021-06-05 07:59:32,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214638062] [2021-06-05 07:59:32,586 INFO L462 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-06-05 07:59:32,586 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:59:32,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-06-05 07:59:32,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2021-06-05 07:59:32,586 INFO L87 Difference]: Start difference. First operand 3428 states and 9593 transitions. Second operand has 23 states, 23 states have (on average 5.086956521739131) internal successors, (117), 23 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:33,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:59:33,195 INFO L93 Difference]: Finished difference Result 4496 states and 11932 transitions. [2021-06-05 07:59:33,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-06-05 07:59:33,195 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.086956521739131) internal successors, (117), 23 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-06-05 07:59:33,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:59:33,199 INFO L225 Difference]: With dead ends: 4496 [2021-06-05 07:59:33,199 INFO L226 Difference]: Without dead ends: 4226 [2021-06-05 07:59:33,200 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 792 ImplicationChecksByTransitivity, 574.4ms TimeCoverageRelationStatistics Valid=809, Invalid=2383, Unknown=0, NotChecked=0, Total=3192 [2021-06-05 07:59:33,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4226 states. [2021-06-05 07:59:33,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4226 to 3503. [2021-06-05 07:59:33,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3503 states, 3502 states have (on average 2.803540833809252) internal successors, (9818), 3502 states have internal predecessors, (9818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:33,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3503 states to 3503 states and 9818 transitions. [2021-06-05 07:59:33,253 INFO L78 Accepts]: Start accepts. Automaton has 3503 states and 9818 transitions. Word has length 115 [2021-06-05 07:59:33,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:59:33,253 INFO L482 AbstractCegarLoop]: Abstraction has 3503 states and 9818 transitions. [2021-06-05 07:59:33,253 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 5.086956521739131) internal successors, (117), 23 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:33,253 INFO L276 IsEmpty]: Start isEmpty. Operand 3503 states and 9818 transitions. [2021-06-05 07:59:33,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-06-05 07:59:33,256 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:59:33,256 INFO L521 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:59:33,456 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151,147 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:33,457 INFO L430 AbstractCegarLoop]: === Iteration 153 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:59:33,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:59:33,457 INFO L82 PathProgramCache]: Analyzing trace with hash -1918135488, now seen corresponding path program 144 times [2021-06-05 07:59:33,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:59:33,457 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901501826] [2021-06-05 07:59:33,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:59:33,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:59:33,615 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:33,615 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:59:33,615 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901501826] [2021-06-05 07:59:33,615 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901501826] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:33,615 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1773941553] [2021-06-05 07:59:33,615 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 148 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 148 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:33,675 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2021-06-05 07:59:33,676 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:59:33,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 23 conjunts are in the unsatisfiable core [2021-06-05 07:59:33,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:59:33,794 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:33,794 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1773941553] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:33,794 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:59:33,794 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2021-06-05 07:59:33,794 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905164427] [2021-06-05 07:59:33,794 INFO L462 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-06-05 07:59:33,794 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:59:33,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-06-05 07:59:33,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=369, Unknown=0, NotChecked=0, Total=462 [2021-06-05 07:59:33,795 INFO L87 Difference]: Start difference. First operand 3503 states and 9818 transitions. Second operand has 22 states, 22 states have (on average 5.2272727272727275) internal successors, (115), 22 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:34,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:59:34,312 INFO L93 Difference]: Finished difference Result 4566 states and 12177 transitions. [2021-06-05 07:59:34,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-05 07:59:34,312 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.2272727272727275) internal successors, (115), 22 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-06-05 07:59:34,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:59:34,316 INFO L225 Difference]: With dead ends: 4566 [2021-06-05 07:59:34,317 INFO L226 Difference]: Without dead ends: 4296 [2021-06-05 07:59:34,317 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 853 ImplicationChecksByTransitivity, 484.2ms TimeCoverageRelationStatistics Valid=881, Invalid=2311, Unknown=0, NotChecked=0, Total=3192 [2021-06-05 07:59:34,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4296 states. [2021-06-05 07:59:34,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4296 to 3578. [2021-06-05 07:59:34,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3578 states, 3577 states have (on average 2.8118535085266982) internal successors, (10058), 3577 states have internal predecessors, (10058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:34,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3578 states to 3578 states and 10058 transitions. [2021-06-05 07:59:34,359 INFO L78 Accepts]: Start accepts. Automaton has 3578 states and 10058 transitions. Word has length 115 [2021-06-05 07:59:34,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:59:34,359 INFO L482 AbstractCegarLoop]: Abstraction has 3578 states and 10058 transitions. [2021-06-05 07:59:34,359 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 5.2272727272727275) internal successors, (115), 22 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:34,359 INFO L276 IsEmpty]: Start isEmpty. Operand 3578 states and 10058 transitions. [2021-06-05 07:59:34,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-06-05 07:59:34,362 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:59:34,362 INFO L521 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:59:34,562 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152,148 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:34,562 INFO L430 AbstractCegarLoop]: === Iteration 154 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:59:34,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:59:34,563 INFO L82 PathProgramCache]: Analyzing trace with hash 661589520, now seen corresponding path program 145 times [2021-06-05 07:59:34,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:59:34,563 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553475811] [2021-06-05 07:59:34,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:59:34,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:59:34,730 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:34,730 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:59:34,730 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553475811] [2021-06-05 07:59:34,730 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553475811] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:34,730 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1401512235] [2021-06-05 07:59:34,730 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 149 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 149 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:34,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:59:34,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 23 conjunts are in the unsatisfiable core [2021-06-05 07:59:34,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:59:34,913 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:34,914 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1401512235] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:34,914 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:59:34,914 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2021-06-05 07:59:34,914 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072052945] [2021-06-05 07:59:34,914 INFO L462 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-06-05 07:59:34,914 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:59:34,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-06-05 07:59:34,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=411, Unknown=0, NotChecked=0, Total=506 [2021-06-05 07:59:34,914 INFO L87 Difference]: Start difference. First operand 3578 states and 10058 transitions. Second operand has 23 states, 23 states have (on average 5.086956521739131) internal successors, (117), 23 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:35,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:59:35,635 INFO L93 Difference]: Finished difference Result 5144 states and 13803 transitions. [2021-06-05 07:59:35,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-06-05 07:59:35,636 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.086956521739131) internal successors, (117), 23 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-06-05 07:59:35,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:59:35,640 INFO L225 Difference]: With dead ends: 5144 [2021-06-05 07:59:35,640 INFO L226 Difference]: Without dead ends: 4521 [2021-06-05 07:59:35,640 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 955 ImplicationChecksByTransitivity, 677.9ms TimeCoverageRelationStatistics Valid=934, Invalid=2726, Unknown=0, NotChecked=0, Total=3660 [2021-06-05 07:59:35,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4521 states. [2021-06-05 07:59:35,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4521 to 3653. [2021-06-05 07:59:35,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3653 states, 3652 states have (on average 2.8170865279299013) internal successors, (10288), 3652 states have internal predecessors, (10288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:35,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3653 states to 3653 states and 10288 transitions. [2021-06-05 07:59:35,677 INFO L78 Accepts]: Start accepts. Automaton has 3653 states and 10288 transitions. Word has length 115 [2021-06-05 07:59:35,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:59:35,677 INFO L482 AbstractCegarLoop]: Abstraction has 3653 states and 10288 transitions. [2021-06-05 07:59:35,677 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 5.086956521739131) internal successors, (117), 23 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:35,677 INFO L276 IsEmpty]: Start isEmpty. Operand 3653 states and 10288 transitions. [2021-06-05 07:59:35,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-06-05 07:59:35,680 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:59:35,680 INFO L521 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:59:35,881 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153,149 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:35,881 INFO L430 AbstractCegarLoop]: === Iteration 155 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:59:35,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:59:35,881 INFO L82 PathProgramCache]: Analyzing trace with hash -371058082, now seen corresponding path program 146 times [2021-06-05 07:59:35,881 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:59:35,881 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99526665] [2021-06-05 07:59:35,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:59:35,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:59:36,020 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:36,021 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:59:36,021 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99526665] [2021-06-05 07:59:36,021 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99526665] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:36,021 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [306308094] [2021-06-05 07:59:36,021 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 150 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 150 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:36,075 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 07:59:36,075 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:59:36,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 23 conjunts are in the unsatisfiable core [2021-06-05 07:59:36,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:59:36,193 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:36,193 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [306308094] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:36,193 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:59:36,193 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2021-06-05 07:59:36,193 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532399625] [2021-06-05 07:59:36,193 INFO L462 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-06-05 07:59:36,194 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:59:36,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-06-05 07:59:36,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=356, Unknown=0, NotChecked=0, Total=462 [2021-06-05 07:59:36,194 INFO L87 Difference]: Start difference. First operand 3653 states and 10288 transitions. Second operand has 22 states, 22 states have (on average 5.2272727272727275) internal successors, (115), 22 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:36,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:59:36,744 INFO L93 Difference]: Finished difference Result 5348 states and 14471 transitions. [2021-06-05 07:59:36,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-05 07:59:36,744 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.2272727272727275) internal successors, (115), 22 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-06-05 07:59:36,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:59:36,750 INFO L225 Difference]: With dead ends: 5348 [2021-06-05 07:59:36,750 INFO L226 Difference]: Without dead ends: 5078 [2021-06-05 07:59:36,750 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 945 ImplicationChecksByTransitivity, 508.6ms TimeCoverageRelationStatistics Valid=1000, Invalid=2422, Unknown=0, NotChecked=0, Total=3422 [2021-06-05 07:59:36,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5078 states. [2021-06-05 07:59:36,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5078 to 3833. [2021-06-05 07:59:36,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3833 states, 3832 states have (on average 2.8306367432150314) internal successors, (10847), 3832 states have internal predecessors, (10847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:36,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3833 states to 3833 states and 10847 transitions. [2021-06-05 07:59:36,793 INFO L78 Accepts]: Start accepts. Automaton has 3833 states and 10847 transitions. Word has length 115 [2021-06-05 07:59:36,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:59:36,793 INFO L482 AbstractCegarLoop]: Abstraction has 3833 states and 10847 transitions. [2021-06-05 07:59:36,793 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 5.2272727272727275) internal successors, (115), 22 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:36,794 INFO L276 IsEmpty]: Start isEmpty. Operand 3833 states and 10847 transitions. [2021-06-05 07:59:36,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-06-05 07:59:36,796 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:59:36,796 INFO L521 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:59:36,997 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 150 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable154 [2021-06-05 07:59:36,997 INFO L430 AbstractCegarLoop]: === Iteration 156 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:59:36,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:59:36,997 INFO L82 PathProgramCache]: Analyzing trace with hash -348714832, now seen corresponding path program 147 times [2021-06-05 07:59:36,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:59:36,997 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460280796] [2021-06-05 07:59:36,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:59:37,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:59:37,139 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:37,139 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:59:37,139 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460280796] [2021-06-05 07:59:37,139 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460280796] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:37,139 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2107147994] [2021-06-05 07:59:37,139 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 151 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 151 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:37,201 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-06-05 07:59:37,201 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:59:37,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 23 conjunts are in the unsatisfiable core [2021-06-05 07:59:37,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:59:37,342 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:37,343 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2107147994] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:37,343 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:59:37,343 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 24 [2021-06-05 07:59:37,343 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036534658] [2021-06-05 07:59:37,343 INFO L462 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-06-05 07:59:37,343 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:59:37,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-06-05 07:59:37,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2021-06-05 07:59:37,343 INFO L87 Difference]: Start difference. First operand 3833 states and 10847 transitions. Second operand has 24 states, 24 states have (on average 4.916666666666667) internal successors, (118), 24 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:38,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:59:38,093 INFO L93 Difference]: Finished difference Result 5216 states and 14136 transitions. [2021-06-05 07:59:38,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-06-05 07:59:38,093 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.916666666666667) internal successors, (118), 24 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-06-05 07:59:38,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:59:38,098 INFO L225 Difference]: With dead ends: 5216 [2021-06-05 07:59:38,098 INFO L226 Difference]: Without dead ends: 4641 [2021-06-05 07:59:38,099 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1135 ImplicationChecksByTransitivity, 705.1ms TimeCoverageRelationStatistics Valid=1100, Invalid=3060, Unknown=0, NotChecked=0, Total=4160 [2021-06-05 07:59:38,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4641 states. [2021-06-05 07:59:38,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4641 to 2524. [2021-06-05 07:59:38,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2524 states, 2523 states have (on average 2.737217598097503) internal successors, (6906), 2523 states have internal predecessors, (6906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:38,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2524 states to 2524 states and 6906 transitions. [2021-06-05 07:59:38,129 INFO L78 Accepts]: Start accepts. Automaton has 2524 states and 6906 transitions. Word has length 115 [2021-06-05 07:59:38,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:59:38,129 INFO L482 AbstractCegarLoop]: Abstraction has 2524 states and 6906 transitions. [2021-06-05 07:59:38,129 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 4.916666666666667) internal successors, (118), 24 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:38,129 INFO L276 IsEmpty]: Start isEmpty. Operand 2524 states and 6906 transitions. [2021-06-05 07:59:38,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-06-05 07:59:38,131 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:59:38,131 INFO L521 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:59:38,331 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 151 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable155 [2021-06-05 07:59:38,331 INFO L430 AbstractCegarLoop]: === Iteration 157 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:59:38,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:59:38,332 INFO L82 PathProgramCache]: Analyzing trace with hash 1146705884, now seen corresponding path program 148 times [2021-06-05 07:59:38,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:59:38,332 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274558197] [2021-06-05 07:59:38,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:59:38,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:59:38,520 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:38,520 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:59:38,520 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274558197] [2021-06-05 07:59:38,520 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274558197] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:38,520 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [237456410] [2021-06-05 07:59:38,520 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 152 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 152 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:38,575 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 07:59:38,575 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:59:38,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-05 07:59:38,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:59:38,769 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:38,769 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [237456410] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:38,769 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:59:38,769 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 27 [2021-06-05 07:59:38,769 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813722534] [2021-06-05 07:59:38,769 INFO L462 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-06-05 07:59:38,770 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:59:38,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-06-05 07:59:38,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=546, Unknown=0, NotChecked=0, Total=702 [2021-06-05 07:59:38,770 INFO L87 Difference]: Start difference. First operand 2524 states and 6906 transitions. Second operand has 27 states, 27 states have (on average 5.555555555555555) internal successors, (150), 27 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:39,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:59:39,161 INFO L93 Difference]: Finished difference Result 3614 states and 9406 transitions. [2021-06-05 07:59:39,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-06-05 07:59:39,162 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 5.555555555555555) internal successors, (150), 27 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2021-06-05 07:59:39,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:59:39,165 INFO L225 Difference]: With dead ends: 3614 [2021-06-05 07:59:39,165 INFO L226 Difference]: Without dead ends: 3280 [2021-06-05 07:59:39,165 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 507 ImplicationChecksByTransitivity, 463.7ms TimeCoverageRelationStatistics Valid=680, Invalid=1870, Unknown=0, NotChecked=0, Total=2550 [2021-06-05 07:59:39,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3280 states. [2021-06-05 07:59:39,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3280 to 2609. [2021-06-05 07:59:39,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2609 states, 2608 states have (on average 2.71319018404908) internal successors, (7076), 2608 states have internal predecessors, (7076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:39,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2609 states to 2609 states and 7076 transitions. [2021-06-05 07:59:39,190 INFO L78 Accepts]: Start accepts. Automaton has 2609 states and 7076 transitions. Word has length 120 [2021-06-05 07:59:39,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:59:39,190 INFO L482 AbstractCegarLoop]: Abstraction has 2609 states and 7076 transitions. [2021-06-05 07:59:39,190 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 5.555555555555555) internal successors, (150), 27 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:39,190 INFO L276 IsEmpty]: Start isEmpty. Operand 2609 states and 7076 transitions. [2021-06-05 07:59:39,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-06-05 07:59:39,192 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:59:39,192 INFO L521 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:59:39,392 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 152 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable156 [2021-06-05 07:59:39,392 INFO L430 AbstractCegarLoop]: === Iteration 158 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:59:39,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:59:39,392 INFO L82 PathProgramCache]: Analyzing trace with hash 51245472, now seen corresponding path program 149 times [2021-06-05 07:59:39,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:59:39,393 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635768625] [2021-06-05 07:59:39,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:59:39,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:59:39,593 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:39,593 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:59:39,593 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635768625] [2021-06-05 07:59:39,593 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635768625] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:39,593 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [675372321] [2021-06-05 07:59:39,593 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 153 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 153 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:39,649 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2021-06-05 07:59:39,649 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:59:39,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-05 07:59:39,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:59:39,799 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:39,799 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [675372321] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:39,799 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:59:39,799 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2021-06-05 07:59:39,799 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430823292] [2021-06-05 07:59:39,799 INFO L462 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-06-05 07:59:39,800 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:59:39,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-06-05 07:59:39,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=425, Unknown=0, NotChecked=0, Total=552 [2021-06-05 07:59:39,800 INFO L87 Difference]: Start difference. First operand 2609 states and 7076 transitions. Second operand has 24 states, 24 states have (on average 5.083333333333333) internal successors, (122), 24 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:40,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:59:40,116 INFO L93 Difference]: Finished difference Result 4436 states and 10987 transitions. [2021-06-05 07:59:40,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-05 07:59:40,117 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.083333333333333) internal successors, (122), 24 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2021-06-05 07:59:40,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:59:40,121 INFO L225 Difference]: With dead ends: 4436 [2021-06-05 07:59:40,121 INFO L226 Difference]: Without dead ends: 4166 [2021-06-05 07:59:40,121 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 334 ImplicationChecksByTransitivity, 401.4ms TimeCoverageRelationStatistics Valid=543, Invalid=1437, Unknown=0, NotChecked=0, Total=1980 [2021-06-05 07:59:40,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4166 states. [2021-06-05 07:59:40,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4166 to 2753. [2021-06-05 07:59:40,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2753 states, 2752 states have (on average 2.722747093023256) internal successors, (7493), 2752 states have internal predecessors, (7493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:40,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2753 states to 2753 states and 7493 transitions. [2021-06-05 07:59:40,148 INFO L78 Accepts]: Start accepts. Automaton has 2753 states and 7493 transitions. Word has length 120 [2021-06-05 07:59:40,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:59:40,149 INFO L482 AbstractCegarLoop]: Abstraction has 2753 states and 7493 transitions. [2021-06-05 07:59:40,149 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 5.083333333333333) internal successors, (122), 24 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:40,149 INFO L276 IsEmpty]: Start isEmpty. Operand 2753 states and 7493 transitions. [2021-06-05 07:59:40,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-06-05 07:59:40,150 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:59:40,150 INFO L521 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:59:40,351 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 153 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable157 [2021-06-05 07:59:40,351 INFO L430 AbstractCegarLoop]: === Iteration 159 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:59:40,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:59:40,351 INFO L82 PathProgramCache]: Analyzing trace with hash -847277968, now seen corresponding path program 150 times [2021-06-05 07:59:40,351 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:59:40,351 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449479284] [2021-06-05 07:59:40,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:59:40,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:59:40,546 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:40,547 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:59:40,547 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449479284] [2021-06-05 07:59:40,547 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449479284] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:40,547 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [918793400] [2021-06-05 07:59:40,547 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 154 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 154 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:40,608 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2021-06-05 07:59:40,608 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:59:40,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-05 07:59:40,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:59:40,768 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:40,768 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [918793400] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:40,768 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:59:40,768 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 25 [2021-06-05 07:59:40,768 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217663891] [2021-06-05 07:59:40,768 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 07:59:40,768 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:59:40,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 07:59:40,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=478, Unknown=0, NotChecked=0, Total=600 [2021-06-05 07:59:40,769 INFO L87 Difference]: Start difference. First operand 2753 states and 7493 transitions. Second operand has 25 states, 25 states have (on average 4.96) internal successors, (124), 25 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:41,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:59:41,152 INFO L93 Difference]: Finished difference Result 4396 states and 10982 transitions. [2021-06-05 07:59:41,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-06-05 07:59:41,152 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.96) internal successors, (124), 25 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2021-06-05 07:59:41,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:59:41,156 INFO L225 Difference]: With dead ends: 4396 [2021-06-05 07:59:41,156 INFO L226 Difference]: Without dead ends: 4126 [2021-06-05 07:59:41,157 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 402 ImplicationChecksByTransitivity, 458.2ms TimeCoverageRelationStatistics Valid=608, Invalid=1744, Unknown=0, NotChecked=0, Total=2352 [2021-06-05 07:59:41,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4126 states. [2021-06-05 07:59:41,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4126 to 2828. [2021-06-05 07:59:41,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2828 states, 2827 states have (on average 2.73010258224266) internal successors, (7718), 2827 states have internal predecessors, (7718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:41,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2828 states to 2828 states and 7718 transitions. [2021-06-05 07:59:41,185 INFO L78 Accepts]: Start accepts. Automaton has 2828 states and 7718 transitions. Word has length 120 [2021-06-05 07:59:41,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:59:41,186 INFO L482 AbstractCegarLoop]: Abstraction has 2828 states and 7718 transitions. [2021-06-05 07:59:41,186 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 4.96) internal successors, (124), 25 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:41,186 INFO L276 IsEmpty]: Start isEmpty. Operand 2828 states and 7718 transitions. [2021-06-05 07:59:41,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-06-05 07:59:41,187 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:59:41,188 INFO L521 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:59:41,388 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 154 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable158 [2021-06-05 07:59:41,388 INFO L430 AbstractCegarLoop]: === Iteration 160 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:59:41,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:59:41,388 INFO L82 PathProgramCache]: Analyzing trace with hash 1832735838, now seen corresponding path program 151 times [2021-06-05 07:59:41,389 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:59:41,389 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389458610] [2021-06-05 07:59:41,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:59:41,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:59:41,582 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:41,582 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:59:41,582 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389458610] [2021-06-05 07:59:41,582 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389458610] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:41,582 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [161932248] [2021-06-05 07:59:41,582 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 155 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 155 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:41,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:59:41,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-05 07:59:41,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:59:41,782 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:41,782 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [161932248] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:41,782 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:59:41,782 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2021-06-05 07:59:41,782 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883819587] [2021-06-05 07:59:41,783 INFO L462 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-06-05 07:59:41,783 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:59:41,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-06-05 07:59:41,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2021-06-05 07:59:41,783 INFO L87 Difference]: Start difference. First operand 2828 states and 7718 transitions. Second operand has 24 states, 24 states have (on average 5.083333333333333) internal successors, (122), 24 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:42,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:59:42,131 INFO L93 Difference]: Finished difference Result 4446 states and 11157 transitions. [2021-06-05 07:59:42,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-05 07:59:42,132 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.083333333333333) internal successors, (122), 24 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2021-06-05 07:59:42,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:59:42,136 INFO L225 Difference]: With dead ends: 4446 [2021-06-05 07:59:42,136 INFO L226 Difference]: Without dead ends: 4176 [2021-06-05 07:59:42,136 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 395 ImplicationChecksByTransitivity, 418.8ms TimeCoverageRelationStatistics Valid=549, Invalid=1613, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 07:59:42,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4176 states. [2021-06-05 07:59:42,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4176 to 2903. [2021-06-05 07:59:42,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2903 states, 2902 states have (on average 2.7370778773259823) internal successors, (7943), 2902 states have internal predecessors, (7943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:42,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2903 states to 2903 states and 7943 transitions. [2021-06-05 07:59:42,166 INFO L78 Accepts]: Start accepts. Automaton has 2903 states and 7943 transitions. Word has length 120 [2021-06-05 07:59:42,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:59:42,166 INFO L482 AbstractCegarLoop]: Abstraction has 2903 states and 7943 transitions. [2021-06-05 07:59:42,166 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 5.083333333333333) internal successors, (122), 24 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:42,166 INFO L276 IsEmpty]: Start isEmpty. Operand 2903 states and 7943 transitions. [2021-06-05 07:59:42,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-06-05 07:59:42,168 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:59:42,168 INFO L521 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:59:42,369 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 155 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable159 [2021-06-05 07:59:42,369 INFO L430 AbstractCegarLoop]: === Iteration 161 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:59:42,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:59:42,369 INFO L82 PathProgramCache]: Analyzing trace with hash 1452291886, now seen corresponding path program 152 times [2021-06-05 07:59:42,369 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:59:42,369 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611602115] [2021-06-05 07:59:42,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:59:42,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:59:42,553 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:42,554 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:59:42,554 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611602115] [2021-06-05 07:59:42,554 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611602115] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:42,554 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1179439277] [2021-06-05 07:59:42,554 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 156 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 156 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:42,610 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 07:59:42,610 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:59:42,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-05 07:59:42,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:59:42,774 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:42,774 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1179439277] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:42,774 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:59:42,774 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 25 [2021-06-05 07:59:42,774 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061341795] [2021-06-05 07:59:42,775 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 07:59:42,775 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:59:42,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 07:59:42,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=492, Unknown=0, NotChecked=0, Total=600 [2021-06-05 07:59:42,775 INFO L87 Difference]: Start difference. First operand 2903 states and 7943 transitions. Second operand has 25 states, 25 states have (on average 4.96) internal successors, (124), 25 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:43,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:59:43,229 INFO L93 Difference]: Finished difference Result 4471 states and 11282 transitions. [2021-06-05 07:59:43,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-06-05 07:59:43,230 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.96) internal successors, (124), 25 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2021-06-05 07:59:43,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:59:43,234 INFO L225 Difference]: With dead ends: 4471 [2021-06-05 07:59:43,234 INFO L226 Difference]: Without dead ends: 4201 [2021-06-05 07:59:43,234 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 469 ImplicationChecksByTransitivity, 495.2ms TimeCoverageRelationStatistics Valid=622, Invalid=1928, Unknown=0, NotChecked=0, Total=2550 [2021-06-05 07:59:43,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4201 states. [2021-06-05 07:59:43,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4201 to 2978. [2021-06-05 07:59:43,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2978 states, 2977 states have (on average 2.7437017131340276) internal successors, (8168), 2977 states have internal predecessors, (8168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:43,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2978 states to 2978 states and 8168 transitions. [2021-06-05 07:59:43,265 INFO L78 Accepts]: Start accepts. Automaton has 2978 states and 8168 transitions. Word has length 120 [2021-06-05 07:59:43,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:59:43,266 INFO L482 AbstractCegarLoop]: Abstraction has 2978 states and 8168 transitions. [2021-06-05 07:59:43,266 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 4.96) internal successors, (124), 25 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:43,266 INFO L276 IsEmpty]: Start isEmpty. Operand 2978 states and 8168 transitions. [2021-06-05 07:59:43,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-06-05 07:59:43,268 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:59:43,268 INFO L521 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:59:43,468 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160,156 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:43,468 INFO L430 AbstractCegarLoop]: === Iteration 162 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:59:43,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:59:43,469 INFO L82 PathProgramCache]: Analyzing trace with hash 2076667036, now seen corresponding path program 153 times [2021-06-05 07:59:43,469 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:59:43,469 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069324224] [2021-06-05 07:59:43,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:59:43,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:59:43,653 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:43,654 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:59:43,654 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069324224] [2021-06-05 07:59:43,654 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069324224] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:43,654 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [842874212] [2021-06-05 07:59:43,654 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 157 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 157 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:43,715 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-06-05 07:59:43,716 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:59:43,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-05 07:59:43,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:59:43,860 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:43,860 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [842874212] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:43,860 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:59:43,860 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2021-06-05 07:59:43,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264191017] [2021-06-05 07:59:43,860 INFO L462 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-06-05 07:59:43,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:59:43,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-06-05 07:59:43,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=451, Unknown=0, NotChecked=0, Total=552 [2021-06-05 07:59:43,861 INFO L87 Difference]: Start difference. First operand 2978 states and 8168 transitions. Second operand has 24 states, 24 states have (on average 5.083333333333333) internal successors, (122), 24 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:44,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:59:44,255 INFO L93 Difference]: Finished difference Result 4496 states and 11407 transitions. [2021-06-05 07:59:44,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-06-05 07:59:44,255 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.083333333333333) internal successors, (122), 24 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2021-06-05 07:59:44,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:59:44,259 INFO L225 Difference]: With dead ends: 4496 [2021-06-05 07:59:44,259 INFO L226 Difference]: Without dead ends: 4226 [2021-06-05 07:59:44,260 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 460 ImplicationChecksByTransitivity, 436.5ms TimeCoverageRelationStatistics Valid=571, Invalid=1781, Unknown=0, NotChecked=0, Total=2352 [2021-06-05 07:59:44,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4226 states. [2021-06-05 07:59:44,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4226 to 3053. [2021-06-05 07:59:44,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3053 states, 3052 states have (on average 2.75) internal successors, (8393), 3052 states have internal predecessors, (8393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:44,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3053 states to 3053 states and 8393 transitions. [2021-06-05 07:59:44,292 INFO L78 Accepts]: Start accepts. Automaton has 3053 states and 8393 transitions. Word has length 120 [2021-06-05 07:59:44,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:59:44,292 INFO L482 AbstractCegarLoop]: Abstraction has 3053 states and 8393 transitions. [2021-06-05 07:59:44,292 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 5.083333333333333) internal successors, (122), 24 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:44,292 INFO L276 IsEmpty]: Start isEmpty. Operand 3053 states and 8393 transitions. [2021-06-05 07:59:44,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-06-05 07:59:44,294 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:59:44,294 INFO L521 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:59:44,496 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161,157 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:44,496 INFO L430 AbstractCegarLoop]: === Iteration 163 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:59:44,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:59:44,497 INFO L82 PathProgramCache]: Analyzing trace with hash -1409248404, now seen corresponding path program 154 times [2021-06-05 07:59:44,497 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:59:44,497 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580892655] [2021-06-05 07:59:44,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:59:44,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:59:44,694 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:44,695 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:59:44,695 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580892655] [2021-06-05 07:59:44,695 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580892655] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:44,695 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [98105342] [2021-06-05 07:59:44,695 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 158 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 158 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:44,762 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 07:59:44,763 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:59:44,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-05 07:59:44,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:59:44,935 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:44,935 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [98105342] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:44,935 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:59:44,936 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 25 [2021-06-05 07:59:44,936 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851490402] [2021-06-05 07:59:44,936 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 07:59:44,936 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:59:44,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 07:59:44,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=502, Unknown=0, NotChecked=0, Total=600 [2021-06-05 07:59:44,936 INFO L87 Difference]: Start difference. First operand 3053 states and 8393 transitions. Second operand has 25 states, 25 states have (on average 4.96) internal successors, (124), 25 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:45,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:59:45,448 INFO L93 Difference]: Finished difference Result 4521 states and 11532 transitions. [2021-06-05 07:59:45,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-06-05 07:59:45,448 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.96) internal successors, (124), 25 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2021-06-05 07:59:45,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:59:45,452 INFO L225 Difference]: With dead ends: 4521 [2021-06-05 07:59:45,452 INFO L226 Difference]: Without dead ends: 4251 [2021-06-05 07:59:45,452 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 541 ImplicationChecksByTransitivity, 554.6ms TimeCoverageRelationStatistics Valid=652, Invalid=2104, Unknown=0, NotChecked=0, Total=2756 [2021-06-05 07:59:45,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4251 states. [2021-06-05 07:59:45,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4251 to 3128. [2021-06-05 07:59:45,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3128 states, 3127 states have (on average 2.7559961624560283) internal successors, (8618), 3127 states have internal predecessors, (8618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:45,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3128 states to 3128 states and 8618 transitions. [2021-06-05 07:59:45,484 INFO L78 Accepts]: Start accepts. Automaton has 3128 states and 8618 transitions. Word has length 120 [2021-06-05 07:59:45,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:59:45,484 INFO L482 AbstractCegarLoop]: Abstraction has 3128 states and 8618 transitions. [2021-06-05 07:59:45,484 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 4.96) internal successors, (124), 25 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:45,485 INFO L276 IsEmpty]: Start isEmpty. Operand 3128 states and 8618 transitions. [2021-06-05 07:59:45,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-06-05 07:59:45,487 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:59:45,487 INFO L521 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:59:45,687 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162,158 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:45,687 INFO L430 AbstractCegarLoop]: === Iteration 164 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:59:45,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:59:45,688 INFO L82 PathProgramCache]: Analyzing trace with hash 1493768794, now seen corresponding path program 155 times [2021-06-05 07:59:45,688 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:59:45,688 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47567153] [2021-06-05 07:59:45,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:59:45,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:59:45,882 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:45,882 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:59:45,882 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47567153] [2021-06-05 07:59:45,882 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47567153] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:45,882 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1121813210] [2021-06-05 07:59:45,882 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 159 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 159 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:45,938 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2021-06-05 07:59:45,938 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:59:45,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-05 07:59:45,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:59:46,081 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:46,081 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1121813210] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:46,081 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:59:46,081 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2021-06-05 07:59:46,081 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223994107] [2021-06-05 07:59:46,081 INFO L462 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-06-05 07:59:46,081 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:59:46,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-06-05 07:59:46,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=458, Unknown=0, NotChecked=0, Total=552 [2021-06-05 07:59:46,082 INFO L87 Difference]: Start difference. First operand 3128 states and 8618 transitions. Second operand has 24 states, 24 states have (on average 5.083333333333333) internal successors, (122), 24 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:46,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:59:46,502 INFO L93 Difference]: Finished difference Result 4546 states and 11657 transitions. [2021-06-05 07:59:46,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-06-05 07:59:46,503 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.083333333333333) internal successors, (122), 24 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2021-06-05 07:59:46,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:59:46,507 INFO L225 Difference]: With dead ends: 4546 [2021-06-05 07:59:46,507 INFO L226 Difference]: Without dead ends: 4276 [2021-06-05 07:59:46,507 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 529 ImplicationChecksByTransitivity, 442.2ms TimeCoverageRelationStatistics Valid=609, Invalid=1941, Unknown=0, NotChecked=0, Total=2550 [2021-06-05 07:59:46,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4276 states. [2021-06-05 07:59:46,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4276 to 3203. [2021-06-05 07:59:46,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3203 states, 3202 states have (on average 2.7617114303560273) internal successors, (8843), 3202 states have internal predecessors, (8843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:46,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3203 states to 3203 states and 8843 transitions. [2021-06-05 07:59:46,541 INFO L78 Accepts]: Start accepts. Automaton has 3203 states and 8843 transitions. Word has length 120 [2021-06-05 07:59:46,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:59:46,541 INFO L482 AbstractCegarLoop]: Abstraction has 3203 states and 8843 transitions. [2021-06-05 07:59:46,541 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 5.083333333333333) internal successors, (122), 24 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:46,541 INFO L276 IsEmpty]: Start isEmpty. Operand 3203 states and 8843 transitions. [2021-06-05 07:59:46,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-06-05 07:59:46,543 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:59:46,543 INFO L521 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:59:46,743 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163,159 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:46,744 INFO L430 AbstractCegarLoop]: === Iteration 165 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:59:46,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:59:46,744 INFO L82 PathProgramCache]: Analyzing trace with hash 1248691498, now seen corresponding path program 156 times [2021-06-05 07:59:46,744 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:59:46,744 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033823667] [2021-06-05 07:59:46,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:59:46,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:59:46,915 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:46,915 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:59:46,915 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033823667] [2021-06-05 07:59:46,915 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033823667] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:46,915 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [886749257] [2021-06-05 07:59:46,915 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 160 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 160 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:46,977 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2021-06-05 07:59:46,978 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:59:46,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-05 07:59:46,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:59:47,135 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:47,135 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [886749257] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:47,135 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:59:47,135 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 25 [2021-06-05 07:59:47,135 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965340405] [2021-06-05 07:59:47,135 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 07:59:47,135 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:59:47,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 07:59:47,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=508, Unknown=0, NotChecked=0, Total=600 [2021-06-05 07:59:47,136 INFO L87 Difference]: Start difference. First operand 3203 states and 8843 transitions. Second operand has 25 states, 25 states have (on average 4.96) internal successors, (124), 25 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:47,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:59:47,719 INFO L93 Difference]: Finished difference Result 4571 states and 11782 transitions. [2021-06-05 07:59:47,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-06-05 07:59:47,719 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.96) internal successors, (124), 25 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2021-06-05 07:59:47,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:59:47,722 INFO L225 Difference]: With dead ends: 4571 [2021-06-05 07:59:47,722 INFO L226 Difference]: Without dead ends: 4301 [2021-06-05 07:59:47,723 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 617 ImplicationChecksByTransitivity, 576.4ms TimeCoverageRelationStatistics Valid=698, Invalid=2272, Unknown=0, NotChecked=0, Total=2970 [2021-06-05 07:59:47,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4301 states. [2021-06-05 07:59:47,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4301 to 3278. [2021-06-05 07:59:47,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3278 states, 3277 states have (on average 2.767165090021361) internal successors, (9068), 3277 states have internal predecessors, (9068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:47,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3278 states to 3278 states and 9068 transitions. [2021-06-05 07:59:47,758 INFO L78 Accepts]: Start accepts. Automaton has 3278 states and 9068 transitions. Word has length 120 [2021-06-05 07:59:47,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:59:47,759 INFO L482 AbstractCegarLoop]: Abstraction has 3278 states and 9068 transitions. [2021-06-05 07:59:47,759 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 4.96) internal successors, (124), 25 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:47,759 INFO L276 IsEmpty]: Start isEmpty. Operand 3278 states and 9068 transitions. [2021-06-05 07:59:47,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-06-05 07:59:47,761 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:59:47,761 INFO L521 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:59:47,961 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164,160 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:47,962 INFO L430 AbstractCegarLoop]: === Iteration 166 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:59:47,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:59:47,962 INFO L82 PathProgramCache]: Analyzing trace with hash 871841176, now seen corresponding path program 157 times [2021-06-05 07:59:47,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:59:47,962 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127649931] [2021-06-05 07:59:47,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:59:47,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:59:48,123 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:48,123 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:59:48,123 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127649931] [2021-06-05 07:59:48,123 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127649931] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:48,123 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1580392586] [2021-06-05 07:59:48,123 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 161 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 161 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:48,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:59:48,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-05 07:59:48,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:59:48,320 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:48,320 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1580392586] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:48,320 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:59:48,320 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2021-06-05 07:59:48,320 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40981379] [2021-06-05 07:59:48,320 INFO L462 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-06-05 07:59:48,320 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:59:48,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-06-05 07:59:48,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=461, Unknown=0, NotChecked=0, Total=552 [2021-06-05 07:59:48,321 INFO L87 Difference]: Start difference. First operand 3278 states and 9068 transitions. Second operand has 24 states, 24 states have (on average 5.083333333333333) internal successors, (122), 24 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:48,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:59:48,805 INFO L93 Difference]: Finished difference Result 4596 states and 11907 transitions. [2021-06-05 07:59:48,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-05 07:59:48,806 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.083333333333333) internal successors, (122), 24 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2021-06-05 07:59:48,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:59:48,810 INFO L225 Difference]: With dead ends: 4596 [2021-06-05 07:59:48,810 INFO L226 Difference]: Without dead ends: 4326 [2021-06-05 07:59:48,811 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 602 ImplicationChecksByTransitivity, 469.8ms TimeCoverageRelationStatistics Valid=663, Invalid=2093, Unknown=0, NotChecked=0, Total=2756 [2021-06-05 07:59:48,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4326 states. [2021-06-05 07:59:48,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4326 to 3353. [2021-06-05 07:59:48,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3353 states, 3352 states have (on average 2.7723747016706444) internal successors, (9293), 3352 states have internal predecessors, (9293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:48,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3353 states to 3353 states and 9293 transitions. [2021-06-05 07:59:48,850 INFO L78 Accepts]: Start accepts. Automaton has 3353 states and 9293 transitions. Word has length 120 [2021-06-05 07:59:48,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:59:48,851 INFO L482 AbstractCegarLoop]: Abstraction has 3353 states and 9293 transitions. [2021-06-05 07:59:48,851 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 5.083333333333333) internal successors, (122), 24 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:48,851 INFO L276 IsEmpty]: Start isEmpty. Operand 3353 states and 9293 transitions. [2021-06-05 07:59:48,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-06-05 07:59:48,853 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:59:48,853 INFO L521 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:59:49,053 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165,161 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:49,053 INFO L430 AbstractCegarLoop]: === Iteration 167 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:59:49,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:59:49,054 INFO L82 PathProgramCache]: Analyzing trace with hash -2096370584, now seen corresponding path program 158 times [2021-06-05 07:59:49,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:59:49,054 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193246218] [2021-06-05 07:59:49,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:59:49,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:59:49,219 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:49,219 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:59:49,219 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193246218] [2021-06-05 07:59:49,219 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193246218] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:49,219 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1129836120] [2021-06-05 07:59:49,219 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 162 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 162 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:49,274 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 07:59:49,275 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:59:49,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-05 07:59:49,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:59:49,429 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:49,429 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1129836120] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:49,429 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:59:49,429 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 25 [2021-06-05 07:59:49,429 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433958395] [2021-06-05 07:59:49,429 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 07:59:49,429 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:59:49,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 07:59:49,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=510, Unknown=0, NotChecked=0, Total=600 [2021-06-05 07:59:49,430 INFO L87 Difference]: Start difference. First operand 3353 states and 9293 transitions. Second operand has 25 states, 25 states have (on average 4.96) internal successors, (124), 25 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:50,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:59:50,022 INFO L93 Difference]: Finished difference Result 4621 states and 12032 transitions. [2021-06-05 07:59:50,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-05 07:59:50,022 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.96) internal successors, (124), 25 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2021-06-05 07:59:50,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:59:50,026 INFO L225 Difference]: With dead ends: 4621 [2021-06-05 07:59:50,026 INFO L226 Difference]: Without dead ends: 4351 [2021-06-05 07:59:50,027 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 697 ImplicationChecksByTransitivity, 589.1ms TimeCoverageRelationStatistics Valid=760, Invalid=2432, Unknown=0, NotChecked=0, Total=3192 [2021-06-05 07:59:50,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4351 states. [2021-06-05 07:59:50,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4351 to 3428. [2021-06-05 07:59:50,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3428 states, 3427 states have (on average 2.7773562882988037) internal successors, (9518), 3427 states have internal predecessors, (9518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:50,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3428 states to 3428 states and 9518 transitions. [2021-06-05 07:59:50,063 INFO L78 Accepts]: Start accepts. Automaton has 3428 states and 9518 transitions. Word has length 120 [2021-06-05 07:59:50,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:59:50,063 INFO L482 AbstractCegarLoop]: Abstraction has 3428 states and 9518 transitions. [2021-06-05 07:59:50,063 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 4.96) internal successors, (124), 25 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:50,063 INFO L276 IsEmpty]: Start isEmpty. Operand 3428 states and 9518 transitions. [2021-06-05 07:59:50,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-06-05 07:59:50,065 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:59:50,066 INFO L521 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:59:50,268 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166,162 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:50,269 INFO L430 AbstractCegarLoop]: === Iteration 168 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:59:50,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:59:50,269 INFO L82 PathProgramCache]: Analyzing trace with hash -1642154410, now seen corresponding path program 159 times [2021-06-05 07:59:50,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:59:50,269 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375072124] [2021-06-05 07:59:50,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:59:50,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:59:50,432 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:50,432 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:59:50,432 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375072124] [2021-06-05 07:59:50,433 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375072124] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:50,433 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1668236941] [2021-06-05 07:59:50,433 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 163 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 163 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:50,495 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-06-05 07:59:50,495 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:59:50,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-05 07:59:50,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:59:50,645 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:50,646 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1668236941] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:50,646 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:59:50,646 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2021-06-05 07:59:50,646 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655768176] [2021-06-05 07:59:50,646 INFO L462 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-06-05 07:59:50,646 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:59:50,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-06-05 07:59:50,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=460, Unknown=0, NotChecked=0, Total=552 [2021-06-05 07:59:50,647 INFO L87 Difference]: Start difference. First operand 3428 states and 9518 transitions. Second operand has 24 states, 24 states have (on average 5.083333333333333) internal successors, (122), 24 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:51,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:59:51,166 INFO L93 Difference]: Finished difference Result 4646 states and 12157 transitions. [2021-06-05 07:59:51,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-06-05 07:59:51,166 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.083333333333333) internal successors, (122), 24 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2021-06-05 07:59:51,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:59:51,170 INFO L225 Difference]: With dead ends: 4646 [2021-06-05 07:59:51,170 INFO L226 Difference]: Without dead ends: 4376 [2021-06-05 07:59:51,171 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 679 ImplicationChecksByTransitivity, 496.1ms TimeCoverageRelationStatistics Valid=733, Invalid=2237, Unknown=0, NotChecked=0, Total=2970 [2021-06-05 07:59:51,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4376 states. [2021-06-05 07:59:51,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4376 to 3503. [2021-06-05 07:59:51,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3503 states, 3502 states have (on average 2.7821245002855512) internal successors, (9743), 3502 states have internal predecessors, (9743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:51,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3503 states to 3503 states and 9743 transitions. [2021-06-05 07:59:51,222 INFO L78 Accepts]: Start accepts. Automaton has 3503 states and 9743 transitions. Word has length 120 [2021-06-05 07:59:51,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:59:51,223 INFO L482 AbstractCegarLoop]: Abstraction has 3503 states and 9743 transitions. [2021-06-05 07:59:51,223 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 5.083333333333333) internal successors, (122), 24 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:51,223 INFO L276 IsEmpty]: Start isEmpty. Operand 3503 states and 9743 transitions. [2021-06-05 07:59:51,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-06-05 07:59:51,225 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:59:51,225 INFO L521 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:59:51,426 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 163 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable167 [2021-06-05 07:59:51,426 INFO L430 AbstractCegarLoop]: === Iteration 169 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:59:51,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:59:51,426 INFO L82 PathProgramCache]: Analyzing trace with hash -643258074, now seen corresponding path program 160 times [2021-06-05 07:59:51,426 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:59:51,426 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947207029] [2021-06-05 07:59:51,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:59:51,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:59:51,583 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:51,583 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:59:51,583 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947207029] [2021-06-05 07:59:51,583 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947207029] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:51,583 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [722162502] [2021-06-05 07:59:51,583 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 164 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 164 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:51,638 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 07:59:51,638 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:59:51,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-05 07:59:51,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:59:51,811 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:51,812 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [722162502] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:51,812 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:59:51,812 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 25 [2021-06-05 07:59:51,812 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158272245] [2021-06-05 07:59:51,812 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 07:59:51,812 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:59:51,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 07:59:51,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=508, Unknown=0, NotChecked=0, Total=600 [2021-06-05 07:59:51,813 INFO L87 Difference]: Start difference. First operand 3503 states and 9743 transitions. Second operand has 25 states, 25 states have (on average 4.96) internal successors, (124), 25 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:52,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:59:52,463 INFO L93 Difference]: Finished difference Result 4671 states and 12282 transitions. [2021-06-05 07:59:52,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-06-05 07:59:52,463 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.96) internal successors, (124), 25 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2021-06-05 07:59:52,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:59:52,467 INFO L225 Difference]: With dead ends: 4671 [2021-06-05 07:59:52,467 INFO L226 Difference]: Without dead ends: 4401 [2021-06-05 07:59:52,468 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 781 ImplicationChecksByTransitivity, 623.0ms TimeCoverageRelationStatistics Valid=838, Invalid=2584, Unknown=0, NotChecked=0, Total=3422 [2021-06-05 07:59:52,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4401 states. [2021-06-05 07:59:52,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4401 to 3578. [2021-06-05 07:59:52,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3578 states, 3577 states have (on average 2.786692759295499) internal successors, (9968), 3577 states have internal predecessors, (9968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:52,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3578 states to 3578 states and 9968 transitions. [2021-06-05 07:59:52,506 INFO L78 Accepts]: Start accepts. Automaton has 3578 states and 9968 transitions. Word has length 120 [2021-06-05 07:59:52,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:59:52,506 INFO L482 AbstractCegarLoop]: Abstraction has 3578 states and 9968 transitions. [2021-06-05 07:59:52,506 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 4.96) internal successors, (124), 25 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:52,506 INFO L276 IsEmpty]: Start isEmpty. Operand 3578 states and 9968 transitions. [2021-06-05 07:59:52,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-06-05 07:59:52,509 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:59:52,509 INFO L521 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:59:52,709 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 164 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable168 [2021-06-05 07:59:52,709 INFO L430 AbstractCegarLoop]: === Iteration 170 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:59:52,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:59:52,709 INFO L82 PathProgramCache]: Analyzing trace with hash 1772381332, now seen corresponding path program 161 times [2021-06-05 07:59:52,710 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:59:52,710 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119262659] [2021-06-05 07:59:52,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:59:52,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:59:52,860 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:52,860 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:59:52,860 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119262659] [2021-06-05 07:59:52,860 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119262659] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:52,860 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [65435221] [2021-06-05 07:59:52,860 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 165 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 165 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:52,916 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2021-06-05 07:59:52,916 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:59:52,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-05 07:59:52,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:59:53,052 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:53,052 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [65435221] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:53,052 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:59:53,052 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2021-06-05 07:59:53,052 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398789347] [2021-06-05 07:59:53,052 INFO L462 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-06-05 07:59:53,052 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:59:53,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-06-05 07:59:53,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=455, Unknown=0, NotChecked=0, Total=552 [2021-06-05 07:59:53,053 INFO L87 Difference]: Start difference. First operand 3578 states and 9968 transitions. Second operand has 24 states, 24 states have (on average 5.083333333333333) internal successors, (122), 24 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:53,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:59:53,610 INFO L93 Difference]: Finished difference Result 4696 states and 12407 transitions. [2021-06-05 07:59:53,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-05 07:59:53,610 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.083333333333333) internal successors, (122), 24 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2021-06-05 07:59:53,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:59:53,615 INFO L225 Difference]: With dead ends: 4696 [2021-06-05 07:59:53,615 INFO L226 Difference]: Without dead ends: 4426 [2021-06-05 07:59:53,615 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 760 ImplicationChecksByTransitivity, 519.6ms TimeCoverageRelationStatistics Valid=819, Invalid=2373, Unknown=0, NotChecked=0, Total=3192 [2021-06-05 07:59:53,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4426 states. [2021-06-05 07:59:53,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4426 to 3653. [2021-06-05 07:59:53,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3653 states, 3652 states have (on average 2.7910733844468782) internal successors, (10193), 3652 states have internal predecessors, (10193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:53,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3653 states to 3653 states and 10193 transitions. [2021-06-05 07:59:53,682 INFO L78 Accepts]: Start accepts. Automaton has 3653 states and 10193 transitions. Word has length 120 [2021-06-05 07:59:53,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:59:53,682 INFO L482 AbstractCegarLoop]: Abstraction has 3653 states and 10193 transitions. [2021-06-05 07:59:53,682 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 5.083333333333333) internal successors, (122), 24 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:53,682 INFO L276 IsEmpty]: Start isEmpty. Operand 3653 states and 10193 transitions. [2021-06-05 07:59:53,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-06-05 07:59:53,685 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:59:53,685 INFO L521 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:59:53,885 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 165 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable169 [2021-06-05 07:59:53,885 INFO L430 AbstractCegarLoop]: === Iteration 171 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:59:53,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:59:53,886 INFO L82 PathProgramCache]: Analyzing trace with hash -492266652, now seen corresponding path program 162 times [2021-06-05 07:59:53,886 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:59:53,886 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215305591] [2021-06-05 07:59:53,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:59:53,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:59:54,058 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:54,058 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:59:54,059 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215305591] [2021-06-05 07:59:54,059 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215305591] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:54,059 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [785822407] [2021-06-05 07:59:54,059 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 166 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 166 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:54,121 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2021-06-05 07:59:54,121 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:59:54,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-05 07:59:54,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:59:54,271 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:54,271 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [785822407] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:54,271 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:59:54,271 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 25 [2021-06-05 07:59:54,271 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670477249] [2021-06-05 07:59:54,272 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 07:59:54,272 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:59:54,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 07:59:54,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=502, Unknown=0, NotChecked=0, Total=600 [2021-06-05 07:59:54,272 INFO L87 Difference]: Start difference. First operand 3653 states and 10193 transitions. Second operand has 25 states, 25 states have (on average 4.96) internal successors, (124), 25 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:55,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:59:55,001 INFO L93 Difference]: Finished difference Result 4721 states and 12532 transitions. [2021-06-05 07:59:55,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-05 07:59:55,002 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.96) internal successors, (124), 25 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2021-06-05 07:59:55,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:59:55,009 INFO L225 Difference]: With dead ends: 4721 [2021-06-05 07:59:55,009 INFO L226 Difference]: Without dead ends: 4451 [2021-06-05 07:59:55,010 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 869 ImplicationChecksByTransitivity, 681.4ms TimeCoverageRelationStatistics Valid=932, Invalid=2728, Unknown=0, NotChecked=0, Total=3660 [2021-06-05 07:59:55,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4451 states. [2021-06-05 07:59:55,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4451 to 3728. [2021-06-05 07:59:55,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3728 states, 3727 states have (on average 2.795277703246579) internal successors, (10418), 3727 states have internal predecessors, (10418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:55,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3728 states to 3728 states and 10418 transitions. [2021-06-05 07:59:55,054 INFO L78 Accepts]: Start accepts. Automaton has 3728 states and 10418 transitions. Word has length 120 [2021-06-05 07:59:55,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:59:55,055 INFO L482 AbstractCegarLoop]: Abstraction has 3728 states and 10418 transitions. [2021-06-05 07:59:55,055 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 4.96) internal successors, (124), 25 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:55,055 INFO L276 IsEmpty]: Start isEmpty. Operand 3728 states and 10418 transitions. [2021-06-05 07:59:55,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-06-05 07:59:55,058 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:59:55,058 INFO L521 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:59:55,258 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170,166 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:55,258 INFO L430 AbstractCegarLoop]: === Iteration 172 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:59:55,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:59:55,258 INFO L82 PathProgramCache]: Analyzing trace with hash 121972818, now seen corresponding path program 163 times [2021-06-05 07:59:55,258 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:59:55,259 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659647732] [2021-06-05 07:59:55,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:59:55,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:59:55,409 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:55,409 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:59:55,409 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659647732] [2021-06-05 07:59:55,410 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659647732] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:55,410 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1269897330] [2021-06-05 07:59:55,410 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 167 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 167 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:55,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:59:55,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-05 07:59:55,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:59:55,597 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:55,598 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1269897330] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:55,598 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:59:55,598 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2021-06-05 07:59:55,598 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316461715] [2021-06-05 07:59:55,598 INFO L462 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-06-05 07:59:55,598 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:59:55,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-06-05 07:59:55,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=446, Unknown=0, NotChecked=0, Total=552 [2021-06-05 07:59:55,599 INFO L87 Difference]: Start difference. First operand 3728 states and 10418 transitions. Second operand has 24 states, 24 states have (on average 5.083333333333333) internal successors, (122), 24 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:56,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:59:56,191 INFO L93 Difference]: Finished difference Result 4791 states and 12777 transitions. [2021-06-05 07:59:56,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-05 07:59:56,192 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.083333333333333) internal successors, (122), 24 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2021-06-05 07:59:56,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:59:56,196 INFO L225 Difference]: With dead ends: 4791 [2021-06-05 07:59:56,196 INFO L226 Difference]: Without dead ends: 4521 [2021-06-05 07:59:56,196 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 845 ImplicationChecksByTransitivity, 546.3ms TimeCoverageRelationStatistics Valid=921, Invalid=2501, Unknown=0, NotChecked=0, Total=3422 [2021-06-05 07:59:56,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4521 states. [2021-06-05 07:59:56,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4521 to 3803. [2021-06-05 07:59:56,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3803 states, 3802 states have (on average 2.8032614413466597) internal successors, (10658), 3802 states have internal predecessors, (10658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:56,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3803 states to 3803 states and 10658 transitions. [2021-06-05 07:59:56,241 INFO L78 Accepts]: Start accepts. Automaton has 3803 states and 10658 transitions. Word has length 120 [2021-06-05 07:59:56,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:59:56,241 INFO L482 AbstractCegarLoop]: Abstraction has 3803 states and 10658 transitions. [2021-06-05 07:59:56,241 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 5.083333333333333) internal successors, (122), 24 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:56,241 INFO L276 IsEmpty]: Start isEmpty. Operand 3803 states and 10658 transitions. [2021-06-05 07:59:56,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-06-05 07:59:56,244 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:59:56,244 INFO L521 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:59:56,444 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 167 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable171 [2021-06-05 07:59:56,444 INFO L430 AbstractCegarLoop]: === Iteration 173 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:59:56,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:59:56,445 INFO L82 PathProgramCache]: Analyzing trace with hash -1593269470, now seen corresponding path program 164 times [2021-06-05 07:59:56,445 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:59:56,445 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010991043] [2021-06-05 07:59:56,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:59:56,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:59:56,598 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:56,598 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:59:56,598 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010991043] [2021-06-05 07:59:56,598 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010991043] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:56,598 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1481512294] [2021-06-05 07:59:56,598 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 168 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 168 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:56,654 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 07:59:56,654 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:59:56,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-05 07:59:56,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:59:56,802 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:56,802 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1481512294] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:56,802 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:59:56,802 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 25 [2021-06-05 07:59:56,802 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079146322] [2021-06-05 07:59:56,802 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 07:59:56,802 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:59:56,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 07:59:56,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=492, Unknown=0, NotChecked=0, Total=600 [2021-06-05 07:59:56,803 INFO L87 Difference]: Start difference. First operand 3803 states and 10658 transitions. Second operand has 25 states, 25 states have (on average 4.96) internal successors, (124), 25 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:57,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:59:57,583 INFO L93 Difference]: Finished difference Result 5369 states and 14403 transitions. [2021-06-05 07:59:57,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-06-05 07:59:57,584 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.96) internal successors, (124), 25 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2021-06-05 07:59:57,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:59:57,589 INFO L225 Difference]: With dead ends: 5369 [2021-06-05 07:59:57,589 INFO L226 Difference]: Without dead ends: 4746 [2021-06-05 07:59:57,589 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1036 ImplicationChecksByTransitivity, 731.0ms TimeCoverageRelationStatistics Valid=1065, Invalid=3095, Unknown=0, NotChecked=0, Total=4160 [2021-06-05 07:59:57,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4746 states. [2021-06-05 07:59:57,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4746 to 3878. [2021-06-05 07:59:57,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3878 states, 3877 states have (on average 2.8083569770441064) internal successors, (10888), 3877 states have internal predecessors, (10888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:57,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3878 states to 3878 states and 10888 transitions. [2021-06-05 07:59:57,629 INFO L78 Accepts]: Start accepts. Automaton has 3878 states and 10888 transitions. Word has length 120 [2021-06-05 07:59:57,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:59:57,629 INFO L482 AbstractCegarLoop]: Abstraction has 3878 states and 10888 transitions. [2021-06-05 07:59:57,629 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 4.96) internal successors, (124), 25 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:57,629 INFO L276 IsEmpty]: Start isEmpty. Operand 3878 states and 10888 transitions. [2021-06-05 07:59:57,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-06-05 07:59:57,632 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:59:57,632 INFO L521 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:59:57,836 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172,168 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:57,837 INFO L430 AbstractCegarLoop]: === Iteration 174 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:59:57,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:59:57,837 INFO L82 PathProgramCache]: Analyzing trace with hash 1669050224, now seen corresponding path program 165 times [2021-06-05 07:59:57,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:59:57,837 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387959646] [2021-06-05 07:59:57,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:59:57,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:59:58,006 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:58,006 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:59:58,006 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387959646] [2021-06-05 07:59:58,006 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387959646] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:58,006 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1218613122] [2021-06-05 07:59:58,006 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 169 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 169 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:58,068 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-06-05 07:59:58,068 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:59:58,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-05 07:59:58,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:59:58,203 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:58,203 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1218613122] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:58,203 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:59:58,203 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2021-06-05 07:59:58,203 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350612853] [2021-06-05 07:59:58,203 INFO L462 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-06-05 07:59:58,203 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:59:58,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-06-05 07:59:58,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=433, Unknown=0, NotChecked=0, Total=552 [2021-06-05 07:59:58,204 INFO L87 Difference]: Start difference. First operand 3878 states and 10888 transitions. Second operand has 24 states, 24 states have (on average 5.083333333333333) internal successors, (122), 24 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:58,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:59:58,806 INFO L93 Difference]: Finished difference Result 5598 states and 15121 transitions. [2021-06-05 07:59:58,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-05 07:59:58,806 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.083333333333333) internal successors, (122), 24 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2021-06-05 07:59:58,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:59:58,811 INFO L225 Difference]: With dead ends: 5598 [2021-06-05 07:59:58,811 INFO L226 Difference]: Without dead ends: 5328 [2021-06-05 07:59:58,812 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 933 ImplicationChecksByTransitivity, 593.0ms TimeCoverageRelationStatistics Valid=1040, Invalid=2620, Unknown=0, NotChecked=0, Total=3660 [2021-06-05 07:59:58,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5328 states. [2021-06-05 07:59:58,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5328 to 4058. [2021-06-05 07:59:58,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4058 states, 4057 states have (on average 2.82154301207789) internal successors, (11447), 4057 states have internal predecessors, (11447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:58,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4058 states to 4058 states and 11447 transitions. [2021-06-05 07:59:58,852 INFO L78 Accepts]: Start accepts. Automaton has 4058 states and 11447 transitions. Word has length 120 [2021-06-05 07:59:58,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:59:58,852 INFO L482 AbstractCegarLoop]: Abstraction has 4058 states and 11447 transitions. [2021-06-05 07:59:58,852 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 5.083333333333333) internal successors, (122), 24 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:58,852 INFO L276 IsEmpty]: Start isEmpty. Operand 4058 states and 11447 transitions. [2021-06-05 07:59:58,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-06-05 07:59:58,855 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:59:58,855 INFO L521 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:59:59,055 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173,169 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:59,056 INFO L430 AbstractCegarLoop]: === Iteration 175 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:59:59,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:59:59,056 INFO L82 PathProgramCache]: Analyzing trace with hash 1691393474, now seen corresponding path program 166 times [2021-06-05 07:59:59,056 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:59:59,056 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346838804] [2021-06-05 07:59:59,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:59:59,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:59:59,205 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:59,205 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:59:59,205 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346838804] [2021-06-05 07:59:59,205 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346838804] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:59,205 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [612998410] [2021-06-05 07:59:59,206 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 170 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 170 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:59,260 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 07:59:59,260 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:59:59,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-05 07:59:59,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:59:59,393 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:59,394 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [612998410] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:59,394 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:59:59,394 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2021-06-05 07:59:59,394 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831240747] [2021-06-05 07:59:59,394 INFO L462 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-06-05 07:59:59,394 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:59:59,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-06-05 07:59:59,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=433, Unknown=0, NotChecked=0, Total=552 [2021-06-05 07:59:59,394 INFO L87 Difference]: Start difference. First operand 4058 states and 11447 transitions. Second operand has 24 states, 24 states have (on average 5.083333333333333) internal successors, (122), 24 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:00,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:00:00,154 INFO L93 Difference]: Finished difference Result 5085 states and 13821 transitions. [2021-06-05 08:00:00,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-05 08:00:00,154 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.083333333333333) internal successors, (122), 24 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2021-06-05 08:00:00,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:00:00,158 INFO L225 Difference]: With dead ends: 5085 [2021-06-05 08:00:00,158 INFO L226 Difference]: Without dead ends: 4506 [2021-06-05 08:00:00,158 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1023 ImplicationChecksByTransitivity, 728.1ms TimeCoverageRelationStatistics Valid=1146, Invalid=2886, Unknown=0, NotChecked=0, Total=4032 [2021-06-05 08:00:00,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4506 states. [2021-06-05 08:00:00,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4506 to 2713. [2021-06-05 08:00:00,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2713 states, 2712 states have (on average 2.7389380530973453) internal successors, (7428), 2712 states have internal predecessors, (7428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:00,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2713 states to 2713 states and 7428 transitions. [2021-06-05 08:00:00,185 INFO L78 Accepts]: Start accepts. Automaton has 2713 states and 7428 transitions. Word has length 120 [2021-06-05 08:00:00,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:00:00,185 INFO L482 AbstractCegarLoop]: Abstraction has 2713 states and 7428 transitions. [2021-06-05 08:00:00,186 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 5.083333333333333) internal successors, (122), 24 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:00,186 INFO L276 IsEmpty]: Start isEmpty. Operand 2713 states and 7428 transitions. [2021-06-05 08:00:00,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-06-05 08:00:00,187 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:00:00,187 INFO L521 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:00:00,388 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174,170 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:00,388 INFO L430 AbstractCegarLoop]: === Iteration 176 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:00:00,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:00:00,388 INFO L82 PathProgramCache]: Analyzing trace with hash -1352458403, now seen corresponding path program 167 times [2021-06-05 08:00:00,388 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:00:00,388 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616176510] [2021-06-05 08:00:00,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:00:00,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:00:00,582 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:00,582 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:00:00,582 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616176510] [2021-06-05 08:00:00,582 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616176510] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:00,582 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965895674] [2021-06-05 08:00:00,582 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 171 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 171 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:00,639 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2021-06-05 08:00:00,639 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:00:00,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-05 08:00:00,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:00:00,779 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:00,779 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1965895674] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:00,779 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:00:00,780 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2021-06-05 08:00:00,780 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543032813] [2021-06-05 08:00:00,780 INFO L462 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-06-05 08:00:00,780 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:00:00,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-06-05 08:00:00,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=433, Unknown=0, NotChecked=0, Total=552 [2021-06-05 08:00:00,780 INFO L87 Difference]: Start difference. First operand 2713 states and 7428 transitions. Second operand has 24 states, 24 states have (on average 5.208333333333333) internal successors, (125), 24 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:01,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:00:01,149 INFO L93 Difference]: Finished difference Result 4031 states and 10267 transitions. [2021-06-05 08:00:01,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-06-05 08:00:01,149 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.208333333333333) internal successors, (125), 24 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2021-06-05 08:00:01,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:00:01,153 INFO L225 Difference]: With dead ends: 4031 [2021-06-05 08:00:01,153 INFO L226 Difference]: Without dead ends: 3761 [2021-06-05 08:00:01,153 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 408 ImplicationChecksByTransitivity, 419.7ms TimeCoverageRelationStatistics Valid=578, Invalid=1678, Unknown=0, NotChecked=0, Total=2256 [2021-06-05 08:00:01,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3761 states. [2021-06-05 08:00:01,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3761 to 2788. [2021-06-05 08:00:01,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2788 states, 2787 states have (on average 2.7459634015069967) internal successors, (7653), 2787 states have internal predecessors, (7653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:01,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2788 states to 2788 states and 7653 transitions. [2021-06-05 08:00:01,183 INFO L78 Accepts]: Start accepts. Automaton has 2788 states and 7653 transitions. Word has length 125 [2021-06-05 08:00:01,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:00:01,183 INFO L482 AbstractCegarLoop]: Abstraction has 2788 states and 7653 transitions. [2021-06-05 08:00:01,183 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 5.208333333333333) internal successors, (125), 24 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:01,183 INFO L276 IsEmpty]: Start isEmpty. Operand 2788 states and 7653 transitions. [2021-06-05 08:00:01,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-06-05 08:00:01,185 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:00:01,185 INFO L521 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:00:01,385 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 171 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable175 [2021-06-05 08:00:01,385 INFO L430 AbstractCegarLoop]: === Iteration 177 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:00:01,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:00:01,386 INFO L82 PathProgramCache]: Analyzing trace with hash 2043985453, now seen corresponding path program 168 times [2021-06-05 08:00:01,386 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:00:01,386 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222106955] [2021-06-05 08:00:01,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:00:01,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:00:01,613 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:01,613 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:00:01,613 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222106955] [2021-06-05 08:00:01,613 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222106955] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:01,613 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1075555312] [2021-06-05 08:00:01,614 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 172 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 172 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:01,677 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2021-06-05 08:00:01,677 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:00:01,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-05 08:00:01,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:00:01,831 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:01,832 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1075555312] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:01,832 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:00:01,832 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2021-06-05 08:00:01,832 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26105771] [2021-06-05 08:00:01,832 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 08:00:01,832 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:00:01,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 08:00:01,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=486, Unknown=0, NotChecked=0, Total=600 [2021-06-05 08:00:01,832 INFO L87 Difference]: Start difference. First operand 2788 states and 7653 transitions. Second operand has 25 states, 25 states have (on average 5.08) internal successors, (127), 25 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:02,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:00:02,267 INFO L93 Difference]: Finished difference Result 4501 states and 11282 transitions. [2021-06-05 08:00:02,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-06-05 08:00:02,267 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.08) internal successors, (127), 25 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2021-06-05 08:00:02,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:00:02,271 INFO L225 Difference]: With dead ends: 4501 [2021-06-05 08:00:02,271 INFO L226 Difference]: Without dead ends: 4231 [2021-06-05 08:00:02,272 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 486 ImplicationChecksByTransitivity, 506.0ms TimeCoverageRelationStatistics Valid=631, Invalid=1919, Unknown=0, NotChecked=0, Total=2550 [2021-06-05 08:00:02,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4231 states. [2021-06-05 08:00:02,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4231 to 2863. [2021-06-05 08:00:02,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2863 states, 2862 states have (on average 2.752620545073375) internal successors, (7878), 2862 states have internal predecessors, (7878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:02,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2863 states to 2863 states and 7878 transitions. [2021-06-05 08:00:02,305 INFO L78 Accepts]: Start accepts. Automaton has 2863 states and 7878 transitions. Word has length 125 [2021-06-05 08:00:02,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:00:02,305 INFO L482 AbstractCegarLoop]: Abstraction has 2863 states and 7878 transitions. [2021-06-05 08:00:02,305 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 5.08) internal successors, (127), 25 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:02,305 INFO L276 IsEmpty]: Start isEmpty. Operand 2863 states and 7878 transitions. [2021-06-05 08:00:02,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-06-05 08:00:02,308 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:00:02,308 INFO L521 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:00:02,518 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176,172 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:02,518 INFO L430 AbstractCegarLoop]: === Iteration 178 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:00:02,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:00:02,519 INFO L82 PathProgramCache]: Analyzing trace with hash 429031963, now seen corresponding path program 169 times [2021-06-05 08:00:02,519 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:00:02,519 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54354823] [2021-06-05 08:00:02,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:00:02,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:00:02,709 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:02,709 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:00:02,709 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54354823] [2021-06-05 08:00:02,709 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54354823] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:02,709 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [616249692] [2021-06-05 08:00:02,709 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 173 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 173 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:02,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:00:02,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-05 08:00:02,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:00:02,906 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:02,906 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [616249692] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:02,906 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:00:02,906 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2021-06-05 08:00:02,906 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496057782] [2021-06-05 08:00:02,906 INFO L462 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-06-05 08:00:02,906 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:00:02,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-06-05 08:00:02,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=446, Unknown=0, NotChecked=0, Total=552 [2021-06-05 08:00:02,907 INFO L87 Difference]: Start difference. First operand 2863 states and 7878 transitions. Second operand has 24 states, 24 states have (on average 5.208333333333333) internal successors, (125), 24 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:03,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:00:03,310 INFO L93 Difference]: Finished difference Result 4531 states and 11417 transitions. [2021-06-05 08:00:03,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-06-05 08:00:03,310 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.208333333333333) internal successors, (125), 24 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2021-06-05 08:00:03,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:00:03,314 INFO L225 Difference]: With dead ends: 4531 [2021-06-05 08:00:03,314 INFO L226 Difference]: Without dead ends: 4261 [2021-06-05 08:00:03,315 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 534 ImplicationChecksByTransitivity, 443.6ms TimeCoverageRelationStatistics Valid=631, Invalid=1919, Unknown=0, NotChecked=0, Total=2550 [2021-06-05 08:00:03,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4261 states. [2021-06-05 08:00:03,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4261 to 2938. [2021-06-05 08:00:03,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2938 states, 2937 states have (on average 2.758937691521961) internal successors, (8103), 2937 states have internal predecessors, (8103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:03,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2938 states to 2938 states and 8103 transitions. [2021-06-05 08:00:03,351 INFO L78 Accepts]: Start accepts. Automaton has 2938 states and 8103 transitions. Word has length 125 [2021-06-05 08:00:03,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:00:03,351 INFO L482 AbstractCegarLoop]: Abstraction has 2938 states and 8103 transitions. [2021-06-05 08:00:03,351 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 5.208333333333333) internal successors, (125), 24 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:03,351 INFO L276 IsEmpty]: Start isEmpty. Operand 2938 states and 8103 transitions. [2021-06-05 08:00:03,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-06-05 08:00:03,353 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:00:03,353 INFO L521 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:00:03,553 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 173 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable177 [2021-06-05 08:00:03,553 INFO L430 AbstractCegarLoop]: === Iteration 179 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:00:03,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:00:03,554 INFO L82 PathProgramCache]: Analyzing trace with hash 48588011, now seen corresponding path program 170 times [2021-06-05 08:00:03,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:00:03,554 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176013658] [2021-06-05 08:00:03,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:00:03,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:00:03,750 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:03,750 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:00:03,750 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176013658] [2021-06-05 08:00:03,750 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176013658] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:03,750 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [822124163] [2021-06-05 08:00:03,750 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 174 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 174 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:03,807 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 08:00:03,807 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:00:03,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-05 08:00:03,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:00:03,961 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:03,961 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [822124163] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:03,961 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:00:03,961 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2021-06-05 08:00:03,961 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525584571] [2021-06-05 08:00:03,979 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 08:00:03,979 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:00:03,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 08:00:03,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=498, Unknown=0, NotChecked=0, Total=600 [2021-06-05 08:00:03,980 INFO L87 Difference]: Start difference. First operand 2938 states and 8103 transitions. Second operand has 25 states, 25 states have (on average 5.08) internal successors, (127), 25 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:04,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:00:04,459 INFO L93 Difference]: Finished difference Result 4556 states and 11542 transitions. [2021-06-05 08:00:04,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-06-05 08:00:04,459 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.08) internal successors, (127), 25 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2021-06-05 08:00:04,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:00:04,464 INFO L225 Difference]: With dead ends: 4556 [2021-06-05 08:00:04,464 INFO L226 Difference]: Without dead ends: 4286 [2021-06-05 08:00:04,464 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 551 ImplicationChecksByTransitivity, 517.5ms TimeCoverageRelationStatistics Valid=653, Invalid=2103, Unknown=0, NotChecked=0, Total=2756 [2021-06-05 08:00:04,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4286 states. [2021-06-05 08:00:04,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4286 to 3013. [2021-06-05 08:00:04,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3013 states, 3012 states have (on average 2.764940239043825) internal successors, (8328), 3012 states have internal predecessors, (8328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:04,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3013 states to 3013 states and 8328 transitions. [2021-06-05 08:00:04,502 INFO L78 Accepts]: Start accepts. Automaton has 3013 states and 8328 transitions. Word has length 125 [2021-06-05 08:00:04,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:00:04,503 INFO L482 AbstractCegarLoop]: Abstraction has 3013 states and 8328 transitions. [2021-06-05 08:00:04,503 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 5.08) internal successors, (127), 25 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:04,503 INFO L276 IsEmpty]: Start isEmpty. Operand 3013 states and 8328 transitions. [2021-06-05 08:00:04,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-06-05 08:00:04,505 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:00:04,505 INFO L521 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:00:04,706 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 174 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable178 [2021-06-05 08:00:04,706 INFO L430 AbstractCegarLoop]: === Iteration 180 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:00:04,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:00:04,706 INFO L82 PathProgramCache]: Analyzing trace with hash 672963161, now seen corresponding path program 171 times [2021-06-05 08:00:04,706 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:00:04,706 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534438891] [2021-06-05 08:00:04,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:00:04,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:00:04,888 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:04,888 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:00:04,888 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534438891] [2021-06-05 08:00:04,888 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534438891] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:04,888 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2092914898] [2021-06-05 08:00:04,888 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 175 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 175 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:04,953 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-06-05 08:00:04,953 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:00:04,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-05 08:00:04,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:00:05,088 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:05,088 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2092914898] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:05,088 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:00:05,088 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2021-06-05 08:00:05,088 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061018631] [2021-06-05 08:00:05,088 INFO L462 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-06-05 08:00:05,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:00:05,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-06-05 08:00:05,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=455, Unknown=0, NotChecked=0, Total=552 [2021-06-05 08:00:05,089 INFO L87 Difference]: Start difference. First operand 3013 states and 8328 transitions. Second operand has 24 states, 24 states have (on average 5.208333333333333) internal successors, (125), 24 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:05,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:00:05,540 INFO L93 Difference]: Finished difference Result 4581 states and 11667 transitions. [2021-06-05 08:00:05,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-05 08:00:05,540 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.208333333333333) internal successors, (125), 24 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2021-06-05 08:00:05,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:00:05,545 INFO L225 Difference]: With dead ends: 4581 [2021-06-05 08:00:05,545 INFO L226 Difference]: Without dead ends: 4311 [2021-06-05 08:00:05,545 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 609 ImplicationChecksByTransitivity, 467.0ms TimeCoverageRelationStatistics Valid=667, Invalid=2089, Unknown=0, NotChecked=0, Total=2756 [2021-06-05 08:00:05,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4311 states. [2021-06-05 08:00:05,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4311 to 3088. [2021-06-05 08:00:05,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3088 states, 3087 states have (on average 2.770651117589893) internal successors, (8553), 3087 states have internal predecessors, (8553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:05,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3088 states to 3088 states and 8553 transitions. [2021-06-05 08:00:05,587 INFO L78 Accepts]: Start accepts. Automaton has 3088 states and 8553 transitions. Word has length 125 [2021-06-05 08:00:05,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:00:05,587 INFO L482 AbstractCegarLoop]: Abstraction has 3088 states and 8553 transitions. [2021-06-05 08:00:05,587 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 5.208333333333333) internal successors, (125), 24 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:05,587 INFO L276 IsEmpty]: Start isEmpty. Operand 3088 states and 8553 transitions. [2021-06-05 08:00:05,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-06-05 08:00:05,589 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:00:05,590 INFO L521 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:00:05,790 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 175 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable179 [2021-06-05 08:00:05,790 INFO L430 AbstractCegarLoop]: === Iteration 181 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:00:05,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:00:05,791 INFO L82 PathProgramCache]: Analyzing trace with hash 1482015017, now seen corresponding path program 172 times [2021-06-05 08:00:05,791 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:00:05,791 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387997823] [2021-06-05 08:00:05,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:00:05,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:00:05,985 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:05,985 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:00:05,986 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387997823] [2021-06-05 08:00:05,986 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387997823] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:05,986 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [379686197] [2021-06-05 08:00:05,986 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 176 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 176 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:06,043 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 08:00:06,043 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:00:06,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-05 08:00:06,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:00:06,228 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:06,228 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [379686197] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:06,228 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:00:06,228 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2021-06-05 08:00:06,228 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778218326] [2021-06-05 08:00:06,228 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 08:00:06,228 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:00:06,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 08:00:06,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=506, Unknown=0, NotChecked=0, Total=600 [2021-06-05 08:00:06,229 INFO L87 Difference]: Start difference. First operand 3088 states and 8553 transitions. Second operand has 25 states, 25 states have (on average 5.08) internal successors, (127), 25 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:06,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:00:06,786 INFO L93 Difference]: Finished difference Result 4606 states and 11792 transitions. [2021-06-05 08:00:06,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-06-05 08:00:06,786 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.08) internal successors, (127), 25 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2021-06-05 08:00:06,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:00:06,791 INFO L225 Difference]: With dead ends: 4606 [2021-06-05 08:00:06,791 INFO L226 Difference]: Without dead ends: 4336 [2021-06-05 08:00:06,791 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 629 ImplicationChecksByTransitivity, 556.7ms TimeCoverageRelationStatistics Valid=691, Invalid=2279, Unknown=0, NotChecked=0, Total=2970 [2021-06-05 08:00:06,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4336 states. [2021-06-05 08:00:06,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4336 to 3163. [2021-06-05 08:00:06,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3163 states, 3162 states have (on average 2.7760910815939277) internal successors, (8778), 3162 states have internal predecessors, (8778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:06,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3163 states to 3163 states and 8778 transitions. [2021-06-05 08:00:06,847 INFO L78 Accepts]: Start accepts. Automaton has 3163 states and 8778 transitions. Word has length 125 [2021-06-05 08:00:06,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:00:06,847 INFO L482 AbstractCegarLoop]: Abstraction has 3163 states and 8778 transitions. [2021-06-05 08:00:06,847 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 5.08) internal successors, (127), 25 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:06,848 INFO L276 IsEmpty]: Start isEmpty. Operand 3163 states and 8778 transitions. [2021-06-05 08:00:06,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-06-05 08:00:06,851 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:00:06,851 INFO L521 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:00:07,068 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 176 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable180 [2021-06-05 08:00:07,068 INFO L430 AbstractCegarLoop]: === Iteration 182 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:00:07,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:00:07,068 INFO L82 PathProgramCache]: Analyzing trace with hash 90064919, now seen corresponding path program 173 times [2021-06-05 08:00:07,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:00:07,069 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753201207] [2021-06-05 08:00:07,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:00:07,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:00:07,243 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:07,243 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:00:07,243 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753201207] [2021-06-05 08:00:07,243 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753201207] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:07,243 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1788271278] [2021-06-05 08:00:07,243 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 177 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 177 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:07,301 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2021-06-05 08:00:07,301 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:00:07,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-05 08:00:07,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:00:07,438 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:07,439 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1788271278] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:07,439 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:00:07,439 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2021-06-05 08:00:07,439 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110744364] [2021-06-05 08:00:07,439 INFO L462 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-06-05 08:00:07,439 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:00:07,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-06-05 08:00:07,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=460, Unknown=0, NotChecked=0, Total=552 [2021-06-05 08:00:07,440 INFO L87 Difference]: Start difference. First operand 3163 states and 8778 transitions. Second operand has 24 states, 24 states have (on average 5.208333333333333) internal successors, (125), 24 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:07,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:00:07,935 INFO L93 Difference]: Finished difference Result 4631 states and 11917 transitions. [2021-06-05 08:00:07,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-06-05 08:00:07,935 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.208333333333333) internal successors, (125), 24 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2021-06-05 08:00:07,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:00:07,939 INFO L225 Difference]: With dead ends: 4631 [2021-06-05 08:00:07,939 INFO L226 Difference]: Without dead ends: 4361 [2021-06-05 08:00:07,940 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 692 ImplicationChecksByTransitivity, 488.7ms TimeCoverageRelationStatistics Valid=719, Invalid=2251, Unknown=0, NotChecked=0, Total=2970 [2021-06-05 08:00:07,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4361 states. [2021-06-05 08:00:07,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4361 to 3238. [2021-06-05 08:00:07,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3238 states, 3237 states have (on average 2.7812789620018536) internal successors, (9003), 3237 states have internal predecessors, (9003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:07,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3238 states to 3238 states and 9003 transitions. [2021-06-05 08:00:07,979 INFO L78 Accepts]: Start accepts. Automaton has 3238 states and 9003 transitions. Word has length 125 [2021-06-05 08:00:07,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:00:07,979 INFO L482 AbstractCegarLoop]: Abstraction has 3238 states and 9003 transitions. [2021-06-05 08:00:07,979 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 5.208333333333333) internal successors, (125), 24 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:07,979 INFO L276 IsEmpty]: Start isEmpty. Operand 3238 states and 9003 transitions. [2021-06-05 08:00:07,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-06-05 08:00:07,981 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:00:07,981 INFO L521 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:00:08,182 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181,177 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:08,182 INFO L430 AbstractCegarLoop]: === Iteration 183 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:00:08,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:00:08,182 INFO L82 PathProgramCache]: Analyzing trace with hash -155012377, now seen corresponding path program 174 times [2021-06-05 08:00:08,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:00:08,182 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707714686] [2021-06-05 08:00:08,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:00:08,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:00:08,415 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:08,415 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:00:08,415 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707714686] [2021-06-05 08:00:08,416 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707714686] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:08,416 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1543130222] [2021-06-05 08:00:08,416 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 178 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 178 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:08,486 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2021-06-05 08:00:08,486 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:00:08,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-05 08:00:08,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:00:08,660 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:08,661 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1543130222] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:08,661 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:00:08,661 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2021-06-05 08:00:08,661 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174596695] [2021-06-05 08:00:08,661 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 08:00:08,661 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:00:08,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 08:00:08,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=510, Unknown=0, NotChecked=0, Total=600 [2021-06-05 08:00:08,662 INFO L87 Difference]: Start difference. First operand 3238 states and 9003 transitions. Second operand has 25 states, 25 states have (on average 5.08) internal successors, (127), 25 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:09,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:00:09,353 INFO L93 Difference]: Finished difference Result 4656 states and 12042 transitions. [2021-06-05 08:00:09,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-05 08:00:09,353 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.08) internal successors, (127), 25 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2021-06-05 08:00:09,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:00:09,358 INFO L225 Difference]: With dead ends: 4656 [2021-06-05 08:00:09,358 INFO L226 Difference]: Without dead ends: 4386 [2021-06-05 08:00:09,359 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 715 ImplicationChecksByTransitivity, 679.5ms TimeCoverageRelationStatistics Valid=745, Invalid=2447, Unknown=0, NotChecked=0, Total=3192 [2021-06-05 08:00:09,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4386 states. [2021-06-05 08:00:09,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4386 to 3313. [2021-06-05 08:00:09,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3313 states, 3312 states have (on average 2.786231884057971) internal successors, (9228), 3312 states have internal predecessors, (9228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:09,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3313 states to 3313 states and 9228 transitions. [2021-06-05 08:00:09,405 INFO L78 Accepts]: Start accepts. Automaton has 3313 states and 9228 transitions. Word has length 125 [2021-06-05 08:00:09,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:00:09,405 INFO L482 AbstractCegarLoop]: Abstraction has 3313 states and 9228 transitions. [2021-06-05 08:00:09,405 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 5.08) internal successors, (127), 25 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:09,405 INFO L276 IsEmpty]: Start isEmpty. Operand 3313 states and 9228 transitions. [2021-06-05 08:00:09,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-06-05 08:00:09,408 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:00:09,408 INFO L521 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:00:09,608 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 178 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable182 [2021-06-05 08:00:09,608 INFO L430 AbstractCegarLoop]: === Iteration 184 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:00:09,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:00:09,609 INFO L82 PathProgramCache]: Analyzing trace with hash -531862699, now seen corresponding path program 175 times [2021-06-05 08:00:09,609 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:00:09,609 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014305415] [2021-06-05 08:00:09,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:00:09,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:00:09,785 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:09,786 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:00:09,786 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014305415] [2021-06-05 08:00:09,786 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014305415] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:09,786 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [528153183] [2021-06-05 08:00:09,786 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 179 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 179 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:09,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:00:09,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-05 08:00:09,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:00:09,980 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:09,981 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [528153183] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:09,981 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:00:09,981 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2021-06-05 08:00:09,981 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950120993] [2021-06-05 08:00:09,981 INFO L462 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-06-05 08:00:09,981 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:00:09,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-06-05 08:00:09,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=461, Unknown=0, NotChecked=0, Total=552 [2021-06-05 08:00:09,981 INFO L87 Difference]: Start difference. First operand 3313 states and 9228 transitions. Second operand has 24 states, 24 states have (on average 5.208333333333333) internal successors, (125), 24 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:10,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:00:10,518 INFO L93 Difference]: Finished difference Result 4681 states and 12167 transitions. [2021-06-05 08:00:10,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-05 08:00:10,518 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.208333333333333) internal successors, (125), 24 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2021-06-05 08:00:10,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:00:10,523 INFO L225 Difference]: With dead ends: 4681 [2021-06-05 08:00:10,523 INFO L226 Difference]: Without dead ends: 4411 [2021-06-05 08:00:10,523 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 779 ImplicationChecksByTransitivity, 517.8ms TimeCoverageRelationStatistics Valid=787, Invalid=2405, Unknown=0, NotChecked=0, Total=3192 [2021-06-05 08:00:10,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4411 states. [2021-06-05 08:00:10,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4411 to 3388. [2021-06-05 08:00:10,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3388 states, 3387 states have (on average 2.7909654561558903) internal successors, (9453), 3387 states have internal predecessors, (9453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:10,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3388 states to 3388 states and 9453 transitions. [2021-06-05 08:00:10,568 INFO L78 Accepts]: Start accepts. Automaton has 3388 states and 9453 transitions. Word has length 125 [2021-06-05 08:00:10,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:00:10,568 INFO L482 AbstractCegarLoop]: Abstraction has 3388 states and 9453 transitions. [2021-06-05 08:00:10,568 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 5.208333333333333) internal successors, (125), 24 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:10,568 INFO L276 IsEmpty]: Start isEmpty. Operand 3388 states and 9453 transitions. [2021-06-05 08:00:10,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-06-05 08:00:10,570 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:00:10,570 INFO L521 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:00:10,771 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183,179 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:10,771 INFO L430 AbstractCegarLoop]: === Iteration 185 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:00:10,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:00:10,771 INFO L82 PathProgramCache]: Analyzing trace with hash 794892837, now seen corresponding path program 176 times [2021-06-05 08:00:10,771 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:00:10,771 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237890879] [2021-06-05 08:00:10,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:00:10,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:00:10,968 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:10,968 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:00:10,968 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237890879] [2021-06-05 08:00:10,968 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237890879] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:10,968 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1477479498] [2021-06-05 08:00:10,968 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 180 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 180 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:11,026 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 08:00:11,027 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:00:11,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-05 08:00:11,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:00:11,175 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:11,175 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1477479498] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:11,176 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:00:11,176 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2021-06-05 08:00:11,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338514972] [2021-06-05 08:00:11,176 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 08:00:11,176 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:00:11,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 08:00:11,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=510, Unknown=0, NotChecked=0, Total=600 [2021-06-05 08:00:11,176 INFO L87 Difference]: Start difference. First operand 3388 states and 9453 transitions. Second operand has 25 states, 25 states have (on average 5.08) internal successors, (127), 25 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:11,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:00:11,816 INFO L93 Difference]: Finished difference Result 4706 states and 12292 transitions. [2021-06-05 08:00:11,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-06-05 08:00:11,817 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.08) internal successors, (127), 25 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2021-06-05 08:00:11,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:00:11,822 INFO L225 Difference]: With dead ends: 4706 [2021-06-05 08:00:11,822 INFO L226 Difference]: Without dead ends: 4436 [2021-06-05 08:00:11,822 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 805 ImplicationChecksByTransitivity, 639.8ms TimeCoverageRelationStatistics Valid=815, Invalid=2607, Unknown=0, NotChecked=0, Total=3422 [2021-06-05 08:00:11,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4436 states. [2021-06-05 08:00:11,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4436 to 3463. [2021-06-05 08:00:11,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3463 states, 3462 states have (on average 2.7954939341421143) internal successors, (9678), 3462 states have internal predecessors, (9678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:11,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3463 states to 3463 states and 9678 transitions. [2021-06-05 08:00:11,868 INFO L78 Accepts]: Start accepts. Automaton has 3463 states and 9678 transitions. Word has length 125 [2021-06-05 08:00:11,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:00:11,868 INFO L482 AbstractCegarLoop]: Abstraction has 3463 states and 9678 transitions. [2021-06-05 08:00:11,868 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 5.08) internal successors, (127), 25 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:11,868 INFO L276 IsEmpty]: Start isEmpty. Operand 3463 states and 9678 transitions. [2021-06-05 08:00:11,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-06-05 08:00:11,871 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:00:11,871 INFO L521 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:00:12,072 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184,180 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:12,072 INFO L430 AbstractCegarLoop]: === Iteration 186 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:00:12,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:00:12,072 INFO L82 PathProgramCache]: Analyzing trace with hash 1249109011, now seen corresponding path program 177 times [2021-06-05 08:00:12,072 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:00:12,072 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764073066] [2021-06-05 08:00:12,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:00:12,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:00:12,246 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:12,246 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:00:12,246 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764073066] [2021-06-05 08:00:12,246 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764073066] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:12,246 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1083272550] [2021-06-05 08:00:12,246 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 181 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 181 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:12,312 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-06-05 08:00:12,313 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:00:12,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-05 08:00:12,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:00:12,447 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:12,447 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1083272550] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:12,447 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:00:12,447 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2021-06-05 08:00:12,447 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138391773] [2021-06-05 08:00:12,447 INFO L462 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-06-05 08:00:12,447 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:00:12,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-06-05 08:00:12,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=458, Unknown=0, NotChecked=0, Total=552 [2021-06-05 08:00:12,448 INFO L87 Difference]: Start difference. First operand 3463 states and 9678 transitions. Second operand has 24 states, 24 states have (on average 5.208333333333333) internal successors, (125), 24 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:13,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:00:13,036 INFO L93 Difference]: Finished difference Result 4731 states and 12417 transitions. [2021-06-05 08:00:13,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-05 08:00:13,036 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.208333333333333) internal successors, (125), 24 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2021-06-05 08:00:13,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:00:13,042 INFO L225 Difference]: With dead ends: 4731 [2021-06-05 08:00:13,042 INFO L226 Difference]: Without dead ends: 4461 [2021-06-05 08:00:13,042 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 870 ImplicationChecksByTransitivity, 548.8ms TimeCoverageRelationStatistics Valid=871, Invalid=2551, Unknown=0, NotChecked=0, Total=3422 [2021-06-05 08:00:13,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4461 states. [2021-06-05 08:00:13,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4461 to 3538. [2021-06-05 08:00:13,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3538 states, 3537 states have (on average 2.799830364715861) internal successors, (9903), 3537 states have internal predecessors, (9903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:13,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3538 states to 3538 states and 9903 transitions. [2021-06-05 08:00:13,095 INFO L78 Accepts]: Start accepts. Automaton has 3538 states and 9903 transitions. Word has length 125 [2021-06-05 08:00:13,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:00:13,095 INFO L482 AbstractCegarLoop]: Abstraction has 3538 states and 9903 transitions. [2021-06-05 08:00:13,095 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 5.208333333333333) internal successors, (125), 24 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:13,095 INFO L276 IsEmpty]: Start isEmpty. Operand 3538 states and 9903 transitions. [2021-06-05 08:00:13,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-06-05 08:00:13,099 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:00:13,099 INFO L521 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:00:13,299 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185,181 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:13,299 INFO L430 AbstractCegarLoop]: === Iteration 187 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:00:13,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:00:13,300 INFO L82 PathProgramCache]: Analyzing trace with hash -2046961949, now seen corresponding path program 178 times [2021-06-05 08:00:13,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:00:13,300 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209867170] [2021-06-05 08:00:13,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:00:13,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:00:13,499 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:13,499 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:00:13,499 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209867170] [2021-06-05 08:00:13,499 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209867170] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:13,499 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [342023769] [2021-06-05 08:00:13,500 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 182 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 182 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:13,558 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 08:00:13,558 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:00:13,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-05 08:00:13,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:00:13,732 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:13,732 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [342023769] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:13,732 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:00:13,733 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2021-06-05 08:00:13,733 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337773776] [2021-06-05 08:00:13,733 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 08:00:13,733 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:00:13,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 08:00:13,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=506, Unknown=0, NotChecked=0, Total=600 [2021-06-05 08:00:13,733 INFO L87 Difference]: Start difference. First operand 3538 states and 9903 transitions. Second operand has 25 states, 25 states have (on average 5.08) internal successors, (127), 25 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:14,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:00:14,481 INFO L93 Difference]: Finished difference Result 4756 states and 12542 transitions. [2021-06-05 08:00:14,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-05 08:00:14,481 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.08) internal successors, (127), 25 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2021-06-05 08:00:14,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:00:14,486 INFO L225 Difference]: With dead ends: 4756 [2021-06-05 08:00:14,486 INFO L226 Difference]: Without dead ends: 4486 [2021-06-05 08:00:14,486 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 899 ImplicationChecksByTransitivity, 729.0ms TimeCoverageRelationStatistics Valid=901, Invalid=2759, Unknown=0, NotChecked=0, Total=3660 [2021-06-05 08:00:14,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4486 states. [2021-06-05 08:00:14,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4486 to 3613. [2021-06-05 08:00:14,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3613 states, 3612 states have (on average 2.8039867109634553) internal successors, (10128), 3612 states have internal predecessors, (10128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:14,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3613 states to 3613 states and 10128 transitions. [2021-06-05 08:00:14,535 INFO L78 Accepts]: Start accepts. Automaton has 3613 states and 10128 transitions. Word has length 125 [2021-06-05 08:00:14,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:00:14,536 INFO L482 AbstractCegarLoop]: Abstraction has 3613 states and 10128 transitions. [2021-06-05 08:00:14,536 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 5.08) internal successors, (127), 25 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:14,536 INFO L276 IsEmpty]: Start isEmpty. Operand 3613 states and 10128 transitions. [2021-06-05 08:00:14,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-06-05 08:00:14,539 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:00:14,539 INFO L521 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:00:14,739 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186,182 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:14,740 INFO L430 AbstractCegarLoop]: === Iteration 188 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:00:14,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:00:14,740 INFO L82 PathProgramCache]: Analyzing trace with hash 368677457, now seen corresponding path program 179 times [2021-06-05 08:00:14,740 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:00:14,740 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384030972] [2021-06-05 08:00:14,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:00:14,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:00:14,925 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:14,926 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:00:14,926 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384030972] [2021-06-05 08:00:14,926 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384030972] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:14,926 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [690526725] [2021-06-05 08:00:14,926 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 183 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 183 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:15,002 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2021-06-05 08:00:15,002 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:00:15,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-05 08:00:15,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:00:15,161 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:15,162 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [690526725] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:15,162 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:00:15,162 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2021-06-05 08:00:15,162 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803221440] [2021-06-05 08:00:15,162 INFO L462 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-06-05 08:00:15,162 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:00:15,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-06-05 08:00:15,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=451, Unknown=0, NotChecked=0, Total=552 [2021-06-05 08:00:15,163 INFO L87 Difference]: Start difference. First operand 3613 states and 10128 transitions. Second operand has 24 states, 24 states have (on average 5.208333333333333) internal successors, (125), 24 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:15,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:00:15,841 INFO L93 Difference]: Finished difference Result 4781 states and 12667 transitions. [2021-06-05 08:00:15,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-05 08:00:15,842 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.208333333333333) internal successors, (125), 24 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2021-06-05 08:00:15,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:00:15,847 INFO L225 Difference]: With dead ends: 4781 [2021-06-05 08:00:15,848 INFO L226 Difference]: Without dead ends: 4511 [2021-06-05 08:00:15,848 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 965 ImplicationChecksByTransitivity, 612.5ms TimeCoverageRelationStatistics Valid=971, Invalid=2689, Unknown=0, NotChecked=0, Total=3660 [2021-06-05 08:00:15,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4511 states. [2021-06-05 08:00:15,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4511 to 3688. [2021-06-05 08:00:15,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3688 states, 3687 states have (on average 2.807973962571196) internal successors, (10353), 3687 states have internal predecessors, (10353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:15,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3688 states to 3688 states and 10353 transitions. [2021-06-05 08:00:15,902 INFO L78 Accepts]: Start accepts. Automaton has 3688 states and 10353 transitions. Word has length 125 [2021-06-05 08:00:15,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:00:15,902 INFO L482 AbstractCegarLoop]: Abstraction has 3688 states and 10353 transitions. [2021-06-05 08:00:15,902 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 5.208333333333333) internal successors, (125), 24 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:15,902 INFO L276 IsEmpty]: Start isEmpty. Operand 3688 states and 10353 transitions. [2021-06-05 08:00:15,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-06-05 08:00:15,905 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:00:15,905 INFO L521 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:00:16,106 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 183 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable187 [2021-06-05 08:00:16,106 INFO L430 AbstractCegarLoop]: === Iteration 189 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:00:16,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:00:16,106 INFO L82 PathProgramCache]: Analyzing trace with hash -1895970527, now seen corresponding path program 180 times [2021-06-05 08:00:16,106 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:00:16,106 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505003936] [2021-06-05 08:00:16,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:00:16,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:00:16,305 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:16,305 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:00:16,305 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505003936] [2021-06-05 08:00:16,305 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505003936] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:16,305 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [634016602] [2021-06-05 08:00:16,305 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 184 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 184 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:16,372 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2021-06-05 08:00:16,372 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:00:16,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-05 08:00:16,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:00:16,521 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:16,521 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [634016602] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:16,521 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:00:16,521 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2021-06-05 08:00:16,522 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053954181] [2021-06-05 08:00:16,522 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 08:00:16,522 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:00:16,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 08:00:16,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=498, Unknown=0, NotChecked=0, Total=600 [2021-06-05 08:00:16,522 INFO L87 Difference]: Start difference. First operand 3688 states and 10353 transitions. Second operand has 25 states, 25 states have (on average 5.08) internal successors, (127), 25 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:17,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:00:17,277 INFO L93 Difference]: Finished difference Result 4806 states and 12792 transitions. [2021-06-05 08:00:17,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-06-05 08:00:17,277 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.08) internal successors, (127), 25 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2021-06-05 08:00:17,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:00:17,282 INFO L225 Difference]: With dead ends: 4806 [2021-06-05 08:00:17,282 INFO L226 Difference]: Without dead ends: 4536 [2021-06-05 08:00:17,283 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 997 ImplicationChecksByTransitivity, 710.3ms TimeCoverageRelationStatistics Valid=1003, Invalid=2903, Unknown=0, NotChecked=0, Total=3906 [2021-06-05 08:00:17,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4536 states. [2021-06-05 08:00:17,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4536 to 3763. [2021-06-05 08:00:17,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3763 states, 3762 states have (on average 2.8118022328548644) internal successors, (10578), 3762 states have internal predecessors, (10578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:17,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3763 states to 3763 states and 10578 transitions. [2021-06-05 08:00:17,340 INFO L78 Accepts]: Start accepts. Automaton has 3763 states and 10578 transitions. Word has length 125 [2021-06-05 08:00:17,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:00:17,341 INFO L482 AbstractCegarLoop]: Abstraction has 3763 states and 10578 transitions. [2021-06-05 08:00:17,341 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 5.08) internal successors, (127), 25 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:17,341 INFO L276 IsEmpty]: Start isEmpty. Operand 3763 states and 10578 transitions. [2021-06-05 08:00:17,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-06-05 08:00:17,345 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:00:17,345 INFO L521 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:00:17,548 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 184 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable188 [2021-06-05 08:00:17,548 INFO L430 AbstractCegarLoop]: === Iteration 190 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:00:17,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:00:17,548 INFO L82 PathProgramCache]: Analyzing trace with hash -1281731057, now seen corresponding path program 181 times [2021-06-05 08:00:17,549 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:00:17,549 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481353873] [2021-06-05 08:00:17,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:00:17,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:00:17,714 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:17,714 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:00:17,714 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481353873] [2021-06-05 08:00:17,714 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481353873] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:17,714 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [546359743] [2021-06-05 08:00:17,714 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 185 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 185 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:17,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:00:17,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-05 08:00:17,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:00:17,903 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:17,903 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [546359743] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:17,903 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:00:17,903 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2021-06-05 08:00:17,903 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790842835] [2021-06-05 08:00:17,904 INFO L462 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-06-05 08:00:17,904 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:00:17,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-06-05 08:00:17,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2021-06-05 08:00:17,904 INFO L87 Difference]: Start difference. First operand 3763 states and 10578 transitions. Second operand has 24 states, 24 states have (on average 5.208333333333333) internal successors, (125), 24 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:18,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:00:18,594 INFO L93 Difference]: Finished difference Result 4831 states and 12917 transitions. [2021-06-05 08:00:18,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-05 08:00:18,594 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.208333333333333) internal successors, (125), 24 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2021-06-05 08:00:18,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:00:18,600 INFO L225 Difference]: With dead ends: 4831 [2021-06-05 08:00:18,600 INFO L226 Difference]: Without dead ends: 4561 [2021-06-05 08:00:18,601 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1064 ImplicationChecksByTransitivity, 633.5ms TimeCoverageRelationStatistics Valid=1087, Invalid=2819, Unknown=0, NotChecked=0, Total=3906 [2021-06-05 08:00:18,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4561 states. [2021-06-05 08:00:18,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4561 to 3838. [2021-06-05 08:00:18,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3838 states, 3837 states have (on average 2.815480844409695) internal successors, (10803), 3837 states have internal predecessors, (10803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:18,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3838 states to 3838 states and 10803 transitions. [2021-06-05 08:00:18,696 INFO L78 Accepts]: Start accepts. Automaton has 3838 states and 10803 transitions. Word has length 125 [2021-06-05 08:00:18,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:00:18,696 INFO L482 AbstractCegarLoop]: Abstraction has 3838 states and 10803 transitions. [2021-06-05 08:00:18,696 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 5.208333333333333) internal successors, (125), 24 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:18,696 INFO L276 IsEmpty]: Start isEmpty. Operand 3838 states and 10803 transitions. [2021-06-05 08:00:18,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-06-05 08:00:18,701 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:00:18,701 INFO L521 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:00:18,910 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 185 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable189 [2021-06-05 08:00:18,910 INFO L430 AbstractCegarLoop]: === Iteration 191 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:00:18,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:00:18,910 INFO L82 PathProgramCache]: Analyzing trace with hash 1297993951, now seen corresponding path program 182 times [2021-06-05 08:00:18,911 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:00:18,911 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618093457] [2021-06-05 08:00:18,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:00:18,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:00:19,079 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:19,079 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:00:19,079 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618093457] [2021-06-05 08:00:19,079 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618093457] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:19,079 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1411864981] [2021-06-05 08:00:19,079 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 186 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 186 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:19,138 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 08:00:19,138 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:00:19,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-05 08:00:19,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:00:19,282 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:19,283 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1411864981] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:19,283 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:00:19,283 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2021-06-05 08:00:19,283 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905939791] [2021-06-05 08:00:19,283 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 08:00:19,283 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:00:19,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 08:00:19,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=486, Unknown=0, NotChecked=0, Total=600 [2021-06-05 08:00:19,284 INFO L87 Difference]: Start difference. First operand 3838 states and 10803 transitions. Second operand has 25 states, 25 states have (on average 5.08) internal successors, (127), 25 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:20,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:00:20,101 INFO L93 Difference]: Finished difference Result 4916 states and 13207 transitions. [2021-06-05 08:00:20,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-06-05 08:00:20,101 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.08) internal successors, (127), 25 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2021-06-05 08:00:20,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:00:20,107 INFO L225 Difference]: With dead ends: 4916 [2021-06-05 08:00:20,107 INFO L226 Difference]: Without dead ends: 4646 [2021-06-05 08:00:20,108 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1099 ImplicationChecksByTransitivity, 753.8ms TimeCoverageRelationStatistics Valid=1121, Invalid=3039, Unknown=0, NotChecked=0, Total=4160 [2021-06-05 08:00:20,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4646 states. [2021-06-05 08:00:20,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4646 to 3913. [2021-06-05 08:00:20,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3913 states, 3912 states have (on average 2.8241308793456033) internal successors, (11048), 3912 states have internal predecessors, (11048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:20,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3913 states to 3913 states and 11048 transitions. [2021-06-05 08:00:20,160 INFO L78 Accepts]: Start accepts. Automaton has 3913 states and 11048 transitions. Word has length 125 [2021-06-05 08:00:20,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:00:20,160 INFO L482 AbstractCegarLoop]: Abstraction has 3913 states and 11048 transitions. [2021-06-05 08:00:20,160 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 5.08) internal successors, (127), 25 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:20,160 INFO L276 IsEmpty]: Start isEmpty. Operand 3913 states and 11048 transitions. [2021-06-05 08:00:20,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-06-05 08:00:20,164 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:00:20,164 INFO L521 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:00:20,368 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190,186 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:20,369 INFO L430 AbstractCegarLoop]: === Iteration 192 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:00:20,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:00:20,369 INFO L82 PathProgramCache]: Analyzing trace with hash 265346349, now seen corresponding path program 183 times [2021-06-05 08:00:20,369 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:00:20,369 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870323580] [2021-06-05 08:00:20,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:00:20,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:00:20,536 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:20,536 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:00:20,536 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870323580] [2021-06-05 08:00:20,536 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870323580] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:20,536 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [904073431] [2021-06-05 08:00:20,536 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 187 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 187 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:20,602 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-06-05 08:00:20,602 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:00:20,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-05 08:00:20,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:00:20,731 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:20,731 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [904073431] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:20,731 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:00:20,731 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2021-06-05 08:00:20,731 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584189345] [2021-06-05 08:00:20,731 INFO L462 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-06-05 08:00:20,732 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:00:20,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-06-05 08:00:20,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=425, Unknown=0, NotChecked=0, Total=552 [2021-06-05 08:00:20,732 INFO L87 Difference]: Start difference. First operand 3913 states and 11048 transitions. Second operand has 24 states, 24 states have (on average 5.208333333333333) internal successors, (125), 24 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:21,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:00:21,409 INFO L93 Difference]: Finished difference Result 5658 states and 15331 transitions. [2021-06-05 08:00:21,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-06-05 08:00:21,409 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.208333333333333) internal successors, (125), 24 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2021-06-05 08:00:21,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:00:21,415 INFO L225 Difference]: With dead ends: 5658 [2021-06-05 08:00:21,415 INFO L226 Difference]: Without dead ends: 5388 [2021-06-05 08:00:21,415 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1166 ImplicationChecksByTransitivity, 631.9ms TimeCoverageRelationStatistics Valid=1220, Invalid=2940, Unknown=0, NotChecked=0, Total=4160 [2021-06-05 08:00:21,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5388 states. [2021-06-05 08:00:21,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5388 to 4093. [2021-06-05 08:00:21,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4093 states, 4092 states have (on average 2.8365102639296187) internal successors, (11607), 4092 states have internal predecessors, (11607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:21,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4093 states to 4093 states and 11607 transitions. [2021-06-05 08:00:21,467 INFO L78 Accepts]: Start accepts. Automaton has 4093 states and 11607 transitions. Word has length 125 [2021-06-05 08:00:21,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:00:21,467 INFO L482 AbstractCegarLoop]: Abstraction has 4093 states and 11607 transitions. [2021-06-05 08:00:21,467 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 5.208333333333333) internal successors, (125), 24 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:21,468 INFO L276 IsEmpty]: Start isEmpty. Operand 4093 states and 11607 transitions. [2021-06-05 08:00:21,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-06-05 08:00:21,471 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:00:21,472 INFO L521 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:00:21,672 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191,187 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:21,673 INFO L430 AbstractCegarLoop]: === Iteration 193 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:00:21,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:00:21,673 INFO L82 PathProgramCache]: Analyzing trace with hash 287689599, now seen corresponding path program 184 times [2021-06-05 08:00:21,673 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:00:21,673 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602674417] [2021-06-05 08:00:21,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:00:21,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:00:21,838 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:21,838 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:00:21,838 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602674417] [2021-06-05 08:00:21,838 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602674417] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:21,838 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [297909083] [2021-06-05 08:00:21,838 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 188 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 188 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:21,896 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 08:00:21,896 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:00:21,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-05 08:00:21,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:00:22,042 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:22,042 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [297909083] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:22,042 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:00:22,043 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2021-06-05 08:00:22,043 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035186492] [2021-06-05 08:00:22,043 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 08:00:22,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:00:22,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 08:00:22,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=470, Unknown=0, NotChecked=0, Total=600 [2021-06-05 08:00:22,043 INFO L87 Difference]: Start difference. First operand 4093 states and 11607 transitions. Second operand has 25 states, 25 states have (on average 5.08) internal successors, (127), 25 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:22,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:00:22,875 INFO L93 Difference]: Finished difference Result 5120 states and 13981 transitions. [2021-06-05 08:00:22,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-06-05 08:00:22,876 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.08) internal successors, (127), 25 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2021-06-05 08:00:22,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:00:22,881 INFO L225 Difference]: With dead ends: 5120 [2021-06-05 08:00:22,881 INFO L226 Difference]: Without dead ends: 4631 [2021-06-05 08:00:22,882 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1205 ImplicationChecksByTransitivity, 771.4ms TimeCoverageRelationStatistics Valid=1258, Invalid=3164, Unknown=0, NotChecked=0, Total=4422 [2021-06-05 08:00:22,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4631 states. [2021-06-05 08:00:22,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4631 to 2634. [2021-06-05 08:00:22,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2634 states, 2633 states have (on average 2.7406000759589824) internal successors, (7216), 2633 states have internal predecessors, (7216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:22,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2634 states to 2634 states and 7216 transitions. [2021-06-05 08:00:22,919 INFO L78 Accepts]: Start accepts. Automaton has 2634 states and 7216 transitions. Word has length 125 [2021-06-05 08:00:22,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:00:22,919 INFO L482 AbstractCegarLoop]: Abstraction has 2634 states and 7216 transitions. [2021-06-05 08:00:22,919 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 5.08) internal successors, (127), 25 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:22,919 INFO L276 IsEmpty]: Start isEmpty. Operand 2634 states and 7216 transitions. [2021-06-05 08:00:22,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-06-05 08:00:22,921 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:00:22,921 INFO L521 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:00:23,121 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192,188 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:23,122 INFO L430 AbstractCegarLoop]: === Iteration 194 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:00:23,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:00:23,122 INFO L82 PathProgramCache]: Analyzing trace with hash -325106707, now seen corresponding path program 185 times [2021-06-05 08:00:23,122 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:00:23,122 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706687080] [2021-06-05 08:00:23,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:00:23,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:00:23,389 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:23,389 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:00:23,389 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706687080] [2021-06-05 08:00:23,389 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706687080] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:23,389 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2032901529] [2021-06-05 08:00:23,389 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 189 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 189 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:23,468 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2021-06-05 08:00:23,468 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:00:23,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 08:00:23,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:00:23,670 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:23,670 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2032901529] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:23,670 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:00:23,670 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 28 [2021-06-05 08:00:23,671 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76992962] [2021-06-05 08:00:23,671 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-06-05 08:00:23,671 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:00:23,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-06-05 08:00:23,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=588, Unknown=0, NotChecked=0, Total=756 [2021-06-05 08:00:23,671 INFO L87 Difference]: Start difference. First operand 2634 states and 7216 transitions. Second operand has 28 states, 28 states have (on average 5.642857142857143) internal successors, (158), 28 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:24,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:00:24,160 INFO L93 Difference]: Finished difference Result 3774 states and 9816 transitions. [2021-06-05 08:00:24,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-06-05 08:00:24,160 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.642857142857143) internal successors, (158), 28 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2021-06-05 08:00:24,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:00:24,164 INFO L225 Difference]: With dead ends: 3774 [2021-06-05 08:00:24,164 INFO L226 Difference]: Without dead ends: 3440 [2021-06-05 08:00:24,164 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 573 ImplicationChecksByTransitivity, 603.7ms TimeCoverageRelationStatistics Valid=760, Invalid=2102, Unknown=0, NotChecked=0, Total=2862 [2021-06-05 08:00:24,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3440 states. [2021-06-05 08:00:24,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3440 to 2719. [2021-06-05 08:00:24,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2719 states, 2718 states have (on average 2.717439293598234) internal successors, (7386), 2718 states have internal predecessors, (7386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:24,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2719 states to 2719 states and 7386 transitions. [2021-06-05 08:00:24,195 INFO L78 Accepts]: Start accepts. Automaton has 2719 states and 7386 transitions. Word has length 130 [2021-06-05 08:00:24,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:00:24,195 INFO L482 AbstractCegarLoop]: Abstraction has 2719 states and 7386 transitions. [2021-06-05 08:00:24,195 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 5.642857142857143) internal successors, (158), 28 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:24,195 INFO L276 IsEmpty]: Start isEmpty. Operand 2719 states and 7386 transitions. [2021-06-05 08:00:24,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-06-05 08:00:24,198 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:00:24,198 INFO L521 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:00:24,398 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193,189 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:24,398 INFO L430 AbstractCegarLoop]: === Iteration 195 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:00:24,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:00:24,399 INFO L82 PathProgramCache]: Analyzing trace with hash -2008975183, now seen corresponding path program 186 times [2021-06-05 08:00:24,399 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:00:24,399 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477916924] [2021-06-05 08:00:24,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:00:24,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:00:24,640 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:24,640 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:00:24,640 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477916924] [2021-06-05 08:00:24,640 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477916924] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:24,640 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [148359792] [2021-06-05 08:00:24,640 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 190 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 190 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:24,711 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2021-06-05 08:00:24,712 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:00:24,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 08:00:24,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:00:24,880 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:24,880 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [148359792] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:24,880 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:00:24,880 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2021-06-05 08:00:24,880 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17045785] [2021-06-05 08:00:24,885 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 08:00:24,885 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:00:24,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 08:00:24,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=462, Unknown=0, NotChecked=0, Total=600 [2021-06-05 08:00:24,886 INFO L87 Difference]: Start difference. First operand 2719 states and 7386 transitions. Second operand has 25 states, 25 states have (on average 5.2) internal successors, (130), 25 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:25,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:00:25,275 INFO L93 Difference]: Finished difference Result 4696 states and 11597 transitions. [2021-06-05 08:00:25,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-05 08:00:25,275 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.2) internal successors, (130), 25 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2021-06-05 08:00:25,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:00:25,280 INFO L225 Difference]: With dead ends: 4696 [2021-06-05 08:00:25,281 INFO L226 Difference]: Without dead ends: 4426 [2021-06-05 08:00:25,281 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 390 ImplicationChecksByTransitivity, 447.5ms TimeCoverageRelationStatistics Valid=616, Invalid=1640, Unknown=0, NotChecked=0, Total=2256 [2021-06-05 08:00:25,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4426 states. [2021-06-05 08:00:25,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4426 to 2863. [2021-06-05 08:00:25,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2863 states, 2862 states have (on average 2.7264150943396226) internal successors, (7803), 2862 states have internal predecessors, (7803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:25,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2863 states to 2863 states and 7803 transitions. [2021-06-05 08:00:25,321 INFO L78 Accepts]: Start accepts. Automaton has 2863 states and 7803 transitions. Word has length 130 [2021-06-05 08:00:25,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:00:25,321 INFO L482 AbstractCegarLoop]: Abstraction has 2863 states and 7803 transitions. [2021-06-05 08:00:25,321 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 5.2) internal successors, (130), 25 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:25,321 INFO L276 IsEmpty]: Start isEmpty. Operand 2863 states and 7803 transitions. [2021-06-05 08:00:25,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-06-05 08:00:25,324 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:00:25,324 INFO L521 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:00:25,524 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 190 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable194 [2021-06-05 08:00:25,524 INFO L430 AbstractCegarLoop]: === Iteration 196 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:00:25,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:00:25,525 INFO L82 PathProgramCache]: Analyzing trace with hash -644426879, now seen corresponding path program 187 times [2021-06-05 08:00:25,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:00:25,525 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301744740] [2021-06-05 08:00:25,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:00:25,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:00:25,765 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:25,765 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:00:25,766 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301744740] [2021-06-05 08:00:25,766 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301744740] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:25,766 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2103655887] [2021-06-05 08:00:25,766 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 191 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 191 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:25,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:00:25,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 08:00:25,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:00:25,986 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:25,987 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2103655887] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:25,987 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:00:25,987 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 26 [2021-06-05 08:00:25,987 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282696390] [2021-06-05 08:00:25,987 INFO L462 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-06-05 08:00:25,987 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:00:25,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-06-05 08:00:25,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=518, Unknown=0, NotChecked=0, Total=650 [2021-06-05 08:00:25,988 INFO L87 Difference]: Start difference. First operand 2863 states and 7803 transitions. Second operand has 26 states, 26 states have (on average 5.076923076923077) internal successors, (132), 26 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:26,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:00:26,444 INFO L93 Difference]: Finished difference Result 4656 states and 11592 transitions. [2021-06-05 08:00:26,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-06-05 08:00:26,444 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.076923076923077) internal successors, (132), 26 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2021-06-05 08:00:26,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:00:26,449 INFO L225 Difference]: With dead ends: 4656 [2021-06-05 08:00:26,449 INFO L226 Difference]: Without dead ends: 4386 [2021-06-05 08:00:26,449 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 465 ImplicationChecksByTransitivity, 521.5ms TimeCoverageRelationStatistics Valid=683, Invalid=1969, Unknown=0, NotChecked=0, Total=2652 [2021-06-05 08:00:26,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4386 states. [2021-06-05 08:00:26,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4386 to 2938. [2021-06-05 08:00:26,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2938 states, 2937 states have (on average 2.7334014300306437) internal successors, (8028), 2937 states have internal predecessors, (8028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:26,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2938 states to 2938 states and 8028 transitions. [2021-06-05 08:00:26,495 INFO L78 Accepts]: Start accepts. Automaton has 2938 states and 8028 transitions. Word has length 130 [2021-06-05 08:00:26,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:00:26,496 INFO L482 AbstractCegarLoop]: Abstraction has 2938 states and 8028 transitions. [2021-06-05 08:00:26,496 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 5.076923076923077) internal successors, (132), 26 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:26,496 INFO L276 IsEmpty]: Start isEmpty. Operand 2938 states and 8028 transitions. [2021-06-05 08:00:26,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-06-05 08:00:26,498 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:00:26,498 INFO L521 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:00:26,698 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195,191 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:26,698 INFO L430 AbstractCegarLoop]: === Iteration 197 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:00:26,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:00:26,699 INFO L82 PathProgramCache]: Analyzing trace with hash 1373308399, now seen corresponding path program 188 times [2021-06-05 08:00:26,699 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:00:26,699 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46959959] [2021-06-05 08:00:26,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:00:26,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:00:26,919 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:26,919 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:00:26,919 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46959959] [2021-06-05 08:00:26,919 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46959959] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:26,919 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1099600569] [2021-06-05 08:00:26,919 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 192 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 192 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:26,978 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 08:00:26,978 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:00:26,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 08:00:26,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:00:27,126 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:27,126 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1099600569] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:27,126 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:00:27,126 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2021-06-05 08:00:27,126 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129601791] [2021-06-05 08:00:27,126 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 08:00:27,126 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:00:27,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 08:00:27,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=478, Unknown=0, NotChecked=0, Total=600 [2021-06-05 08:00:27,127 INFO L87 Difference]: Start difference. First operand 2938 states and 8028 transitions. Second operand has 25 states, 25 states have (on average 5.2) internal successors, (130), 25 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:27,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:00:27,535 INFO L93 Difference]: Finished difference Result 4706 states and 11767 transitions. [2021-06-05 08:00:27,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-06-05 08:00:27,535 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.2) internal successors, (130), 25 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2021-06-05 08:00:27,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:00:27,540 INFO L225 Difference]: With dead ends: 4706 [2021-06-05 08:00:27,540 INFO L226 Difference]: Without dead ends: 4436 [2021-06-05 08:00:27,540 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 454 ImplicationChecksByTransitivity, 470.4ms TimeCoverageRelationStatistics Valid=621, Invalid=1829, Unknown=0, NotChecked=0, Total=2450 [2021-06-05 08:00:27,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4436 states. [2021-06-05 08:00:27,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4436 to 3013. [2021-06-05 08:00:27,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3013 states, 3012 states have (on average 2.74003984063745) internal successors, (8253), 3012 states have internal predecessors, (8253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:27,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3013 states to 3013 states and 8253 transitions. [2021-06-05 08:00:27,577 INFO L78 Accepts]: Start accepts. Automaton has 3013 states and 8253 transitions. Word has length 130 [2021-06-05 08:00:27,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:00:27,577 INFO L482 AbstractCegarLoop]: Abstraction has 3013 states and 8253 transitions. [2021-06-05 08:00:27,577 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 5.2) internal successors, (130), 25 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:27,577 INFO L276 IsEmpty]: Start isEmpty. Operand 3013 states and 8253 transitions. [2021-06-05 08:00:27,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-06-05 08:00:27,579 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:00:27,579 INFO L521 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:00:27,780 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196,192 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:27,780 INFO L430 AbstractCegarLoop]: === Iteration 198 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:00:27,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:00:27,780 INFO L82 PathProgramCache]: Analyzing trace with hash 474784959, now seen corresponding path program 189 times [2021-06-05 08:00:27,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:00:27,781 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768419200] [2021-06-05 08:00:27,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:00:27,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:00:28,005 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:28,005 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:00:28,005 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768419200] [2021-06-05 08:00:28,005 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768419200] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:28,005 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1903770240] [2021-06-05 08:00:28,005 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 193 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 193 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:28,071 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2021-06-05 08:00:28,071 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:00:28,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 08:00:28,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:00:28,233 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:28,233 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1903770240] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:28,233 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:00:28,233 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 26 [2021-06-05 08:00:28,233 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197979386] [2021-06-05 08:00:28,233 INFO L462 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-06-05 08:00:28,233 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:00:28,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-06-05 08:00:28,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=533, Unknown=0, NotChecked=0, Total=650 [2021-06-05 08:00:28,234 INFO L87 Difference]: Start difference. First operand 3013 states and 8253 transitions. Second operand has 26 states, 26 states have (on average 5.076923076923077) internal successors, (132), 26 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:28,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:00:28,738 INFO L93 Difference]: Finished difference Result 4731 states and 11892 transitions. [2021-06-05 08:00:28,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-06-05 08:00:28,738 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.076923076923077) internal successors, (132), 26 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2021-06-05 08:00:28,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:00:28,743 INFO L225 Difference]: With dead ends: 4731 [2021-06-05 08:00:28,744 INFO L226 Difference]: Without dead ends: 4461 [2021-06-05 08:00:28,744 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 535 ImplicationChecksByTransitivity, 560.5ms TimeCoverageRelationStatistics Valid=696, Invalid=2166, Unknown=0, NotChecked=0, Total=2862 [2021-06-05 08:00:28,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4461 states. [2021-06-05 08:00:28,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4461 to 3088. [2021-06-05 08:00:28,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3088 states, 3087 states have (on average 2.746355685131195) internal successors, (8478), 3087 states have internal predecessors, (8478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:28,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3088 states to 3088 states and 8478 transitions. [2021-06-05 08:00:28,784 INFO L78 Accepts]: Start accepts. Automaton has 3088 states and 8478 transitions. Word has length 130 [2021-06-05 08:00:28,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:00:28,784 INFO L482 AbstractCegarLoop]: Abstraction has 3088 states and 8478 transitions. [2021-06-05 08:00:28,784 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 5.076923076923077) internal successors, (132), 26 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:28,784 INFO L276 IsEmpty]: Start isEmpty. Operand 3088 states and 8478 transitions. [2021-06-05 08:00:28,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-06-05 08:00:28,786 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:00:28,786 INFO L521 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:00:28,987 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197,193 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:28,987 INFO L430 AbstractCegarLoop]: === Iteration 199 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:00:28,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:00:28,987 INFO L82 PathProgramCache]: Analyzing trace with hash -1140168531, now seen corresponding path program 190 times [2021-06-05 08:00:28,987 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:00:28,987 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293708067] [2021-06-05 08:00:28,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:00:28,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:00:29,207 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:29,207 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:00:29,207 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293708067] [2021-06-05 08:00:29,207 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293708067] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:29,208 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [191251519] [2021-06-05 08:00:29,208 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 194 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 194 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:29,266 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 08:00:29,266 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:00:29,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 08:00:29,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:00:29,414 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:29,414 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [191251519] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:29,414 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:00:29,414 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2021-06-05 08:00:29,414 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917742278] [2021-06-05 08:00:29,415 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 08:00:29,415 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:00:29,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 08:00:29,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=490, Unknown=0, NotChecked=0, Total=600 [2021-06-05 08:00:29,415 INFO L87 Difference]: Start difference. First operand 3088 states and 8478 transitions. Second operand has 25 states, 25 states have (on average 5.2) internal successors, (130), 25 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:29,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:00:29,869 INFO L93 Difference]: Finished difference Result 4756 states and 12017 transitions. [2021-06-05 08:00:29,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-06-05 08:00:29,870 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.2) internal successors, (130), 25 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2021-06-05 08:00:29,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:00:29,874 INFO L225 Difference]: With dead ends: 4756 [2021-06-05 08:00:29,874 INFO L226 Difference]: Without dead ends: 4486 [2021-06-05 08:00:29,874 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 522 ImplicationChecksByTransitivity, 503.2ms TimeCoverageRelationStatistics Valid=642, Invalid=2010, Unknown=0, NotChecked=0, Total=2652 [2021-06-05 08:00:29,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4486 states. [2021-06-05 08:00:29,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4486 to 3163. [2021-06-05 08:00:29,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3163 states, 3162 states have (on average 2.752371916508539) internal successors, (8703), 3162 states have internal predecessors, (8703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:29,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3163 states to 3163 states and 8703 transitions. [2021-06-05 08:00:29,910 INFO L78 Accepts]: Start accepts. Automaton has 3163 states and 8703 transitions. Word has length 130 [2021-06-05 08:00:29,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:00:29,910 INFO L482 AbstractCegarLoop]: Abstraction has 3163 states and 8703 transitions. [2021-06-05 08:00:29,910 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 5.2) internal successors, (130), 25 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:29,910 INFO L276 IsEmpty]: Start isEmpty. Operand 3163 states and 8703 transitions. [2021-06-05 08:00:29,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-06-05 08:00:29,912 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:00:29,912 INFO L521 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:00:30,113 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198,194 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:30,113 INFO L430 AbstractCegarLoop]: === Iteration 200 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:00:30,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:00:30,113 INFO L82 PathProgramCache]: Analyzing trace with hash -1520612483, now seen corresponding path program 191 times [2021-06-05 08:00:30,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:00:30,113 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528229593] [2021-06-05 08:00:30,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:00:30,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:00:30,322 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:30,323 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:00:30,323 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528229593] [2021-06-05 08:00:30,323 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528229593] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:30,323 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1463955420] [2021-06-05 08:00:30,323 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 195 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 195 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:30,384 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2021-06-05 08:00:30,384 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:00:30,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 08:00:30,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:00:30,545 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:30,546 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1463955420] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:30,546 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:00:30,546 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 26 [2021-06-05 08:00:30,546 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454471588] [2021-06-05 08:00:30,546 INFO L462 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-06-05 08:00:30,546 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:00:30,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-06-05 08:00:30,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=544, Unknown=0, NotChecked=0, Total=650 [2021-06-05 08:00:30,547 INFO L87 Difference]: Start difference. First operand 3163 states and 8703 transitions. Second operand has 26 states, 26 states have (on average 5.076923076923077) internal successors, (132), 26 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:31,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:00:31,109 INFO L93 Difference]: Finished difference Result 4781 states and 12142 transitions. [2021-06-05 08:00:31,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-06-05 08:00:31,110 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.076923076923077) internal successors, (132), 26 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2021-06-05 08:00:31,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:00:31,115 INFO L225 Difference]: With dead ends: 4781 [2021-06-05 08:00:31,115 INFO L226 Difference]: Without dead ends: 4511 [2021-06-05 08:00:31,115 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 610 ImplicationChecksByTransitivity, 588.4ms TimeCoverageRelationStatistics Valid=725, Invalid=2355, Unknown=0, NotChecked=0, Total=3080 [2021-06-05 08:00:31,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4511 states. [2021-06-05 08:00:31,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4511 to 3238. [2021-06-05 08:00:31,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3238 states, 3237 states have (on average 2.7581093605189992) internal successors, (8928), 3237 states have internal predecessors, (8928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:31,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3238 states to 3238 states and 8928 transitions. [2021-06-05 08:00:31,157 INFO L78 Accepts]: Start accepts. Automaton has 3238 states and 8928 transitions. Word has length 130 [2021-06-05 08:00:31,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:00:31,157 INFO L482 AbstractCegarLoop]: Abstraction has 3238 states and 8928 transitions. [2021-06-05 08:00:31,157 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 5.076923076923077) internal successors, (132), 26 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:31,157 INFO L276 IsEmpty]: Start isEmpty. Operand 3238 states and 8928 transitions. [2021-06-05 08:00:31,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-06-05 08:00:31,160 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:00:31,160 INFO L521 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:00:31,360 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 195 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable199 [2021-06-05 08:00:31,360 INFO L430 AbstractCegarLoop]: === Iteration 201 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:00:31,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:00:31,361 INFO L82 PathProgramCache]: Analyzing trace with hash -896237333, now seen corresponding path program 192 times [2021-06-05 08:00:31,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:00:31,361 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844176834] [2021-06-05 08:00:31,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:00:31,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:00:31,576 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:31,576 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:00:31,576 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844176834] [2021-06-05 08:00:31,576 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844176834] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:31,576 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2024119581] [2021-06-05 08:00:31,576 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 196 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 196 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:31,642 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2021-06-05 08:00:31,643 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:00:31,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 08:00:31,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:00:31,793 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:31,793 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2024119581] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:31,793 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:00:31,794 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2021-06-05 08:00:31,794 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391402010] [2021-06-05 08:00:31,794 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 08:00:31,794 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:00:31,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 08:00:31,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=498, Unknown=0, NotChecked=0, Total=600 [2021-06-05 08:00:31,794 INFO L87 Difference]: Start difference. First operand 3238 states and 8928 transitions. Second operand has 25 states, 25 states have (on average 5.2) internal successors, (130), 25 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:32,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:00:32,274 INFO L93 Difference]: Finished difference Result 4806 states and 12267 transitions. [2021-06-05 08:00:32,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-05 08:00:32,275 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.2) internal successors, (130), 25 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2021-06-05 08:00:32,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:00:32,279 INFO L225 Difference]: With dead ends: 4806 [2021-06-05 08:00:32,279 INFO L226 Difference]: Without dead ends: 4536 [2021-06-05 08:00:32,280 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 594 ImplicationChecksByTransitivity, 524.2ms TimeCoverageRelationStatistics Valid=679, Invalid=2183, Unknown=0, NotChecked=0, Total=2862 [2021-06-05 08:00:32,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4536 states. [2021-06-05 08:00:32,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4536 to 3313. [2021-06-05 08:00:32,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3313 states, 3312 states have (on average 2.7635869565217392) internal successors, (9153), 3312 states have internal predecessors, (9153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:32,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3313 states to 3313 states and 9153 transitions. [2021-06-05 08:00:32,321 INFO L78 Accepts]: Start accepts. Automaton has 3313 states and 9153 transitions. Word has length 130 [2021-06-05 08:00:32,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:00:32,321 INFO L482 AbstractCegarLoop]: Abstraction has 3313 states and 9153 transitions. [2021-06-05 08:00:32,321 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 5.2) internal successors, (130), 25 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:32,322 INFO L276 IsEmpty]: Start isEmpty. Operand 3313 states and 9153 transitions. [2021-06-05 08:00:32,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-06-05 08:00:32,324 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:00:32,324 INFO L521 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:00:32,525 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 196 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable200 [2021-06-05 08:00:32,525 INFO L430 AbstractCegarLoop]: === Iteration 202 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:00:32,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:00:32,526 INFO L82 PathProgramCache]: Analyzing trace with hash -87185477, now seen corresponding path program 193 times [2021-06-05 08:00:32,526 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:00:32,526 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967608021] [2021-06-05 08:00:32,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:00:32,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:00:32,727 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:32,727 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:00:32,727 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967608021] [2021-06-05 08:00:32,727 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967608021] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:32,727 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1629793295] [2021-06-05 08:00:32,727 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 197 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 197 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:32,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:00:32,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 08:00:32,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:00:32,942 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:32,942 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1629793295] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:32,942 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:00:32,942 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 26 [2021-06-05 08:00:32,942 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98524442] [2021-06-05 08:00:32,942 INFO L462 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-06-05 08:00:32,942 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:00:32,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-06-05 08:00:32,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=551, Unknown=0, NotChecked=0, Total=650 [2021-06-05 08:00:32,943 INFO L87 Difference]: Start difference. First operand 3313 states and 9153 transitions. Second operand has 26 states, 26 states have (on average 5.076923076923077) internal successors, (132), 26 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:33,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:00:33,574 INFO L93 Difference]: Finished difference Result 4831 states and 12392 transitions. [2021-06-05 08:00:33,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-05 08:00:33,574 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.076923076923077) internal successors, (132), 26 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2021-06-05 08:00:33,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:00:33,579 INFO L225 Difference]: With dead ends: 4831 [2021-06-05 08:00:33,579 INFO L226 Difference]: Without dead ends: 4561 [2021-06-05 08:00:33,580 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 689 ImplicationChecksByTransitivity, 631.6ms TimeCoverageRelationStatistics Valid=770, Invalid=2536, Unknown=0, NotChecked=0, Total=3306 [2021-06-05 08:00:33,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4561 states. [2021-06-05 08:00:33,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4561 to 3388. [2021-06-05 08:00:33,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3388 states, 3387 states have (on average 2.7688219663418954) internal successors, (9378), 3387 states have internal predecessors, (9378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:33,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3388 states to 3388 states and 9378 transitions. [2021-06-05 08:00:33,623 INFO L78 Accepts]: Start accepts. Automaton has 3388 states and 9378 transitions. Word has length 130 [2021-06-05 08:00:33,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:00:33,623 INFO L482 AbstractCegarLoop]: Abstraction has 3388 states and 9378 transitions. [2021-06-05 08:00:33,623 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 5.076923076923077) internal successors, (132), 26 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:33,623 INFO L276 IsEmpty]: Start isEmpty. Operand 3388 states and 9378 transitions. [2021-06-05 08:00:33,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-06-05 08:00:33,626 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:00:33,626 INFO L521 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:00:33,826 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 197 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable201 [2021-06-05 08:00:33,826 INFO L430 AbstractCegarLoop]: === Iteration 203 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:00:33,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:00:33,827 INFO L82 PathProgramCache]: Analyzing trace with hash -1479135575, now seen corresponding path program 194 times [2021-06-05 08:00:33,827 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:00:33,827 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973333088] [2021-06-05 08:00:33,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:00:33,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:00:34,059 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:34,059 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:00:34,059 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973333088] [2021-06-05 08:00:34,059 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973333088] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:34,059 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [660651409] [2021-06-05 08:00:34,059 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 198 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 198 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:34,131 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 08:00:34,131 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:00:34,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 08:00:34,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:00:34,277 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:34,277 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [660651409] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:34,277 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:00:34,277 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2021-06-05 08:00:34,277 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127548496] [2021-06-05 08:00:34,277 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 08:00:34,277 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:00:34,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 08:00:34,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=502, Unknown=0, NotChecked=0, Total=600 [2021-06-05 08:00:34,278 INFO L87 Difference]: Start difference. First operand 3388 states and 9378 transitions. Second operand has 25 states, 25 states have (on average 5.2) internal successors, (130), 25 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:34,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:00:34,839 INFO L93 Difference]: Finished difference Result 4856 states and 12517 transitions. [2021-06-05 08:00:34,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-06-05 08:00:34,839 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.2) internal successors, (130), 25 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2021-06-05 08:00:34,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:00:34,844 INFO L225 Difference]: With dead ends: 4856 [2021-06-05 08:00:34,844 INFO L226 Difference]: Without dead ends: 4586 [2021-06-05 08:00:34,845 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 670 ImplicationChecksByTransitivity, 581.2ms TimeCoverageRelationStatistics Valid=732, Invalid=2348, Unknown=0, NotChecked=0, Total=3080 [2021-06-05 08:00:34,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4586 states. [2021-06-05 08:00:34,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4586 to 3463. [2021-06-05 08:00:34,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3463 states, 3462 states have (on average 2.7738301559792027) internal successors, (9603), 3462 states have internal predecessors, (9603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:34,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3463 states to 3463 states and 9603 transitions. [2021-06-05 08:00:34,887 INFO L78 Accepts]: Start accepts. Automaton has 3463 states and 9603 transitions. Word has length 130 [2021-06-05 08:00:34,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:00:34,887 INFO L482 AbstractCegarLoop]: Abstraction has 3463 states and 9603 transitions. [2021-06-05 08:00:34,887 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 5.2) internal successors, (130), 25 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:34,887 INFO L276 IsEmpty]: Start isEmpty. Operand 3463 states and 9603 transitions. [2021-06-05 08:00:34,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-06-05 08:00:34,890 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:00:34,890 INFO L521 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:00:35,090 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 198 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable202 [2021-06-05 08:00:35,091 INFO L430 AbstractCegarLoop]: === Iteration 204 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:00:35,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:00:35,091 INFO L82 PathProgramCache]: Analyzing trace with hash -1724212871, now seen corresponding path program 195 times [2021-06-05 08:00:35,091 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:00:35,091 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394055041] [2021-06-05 08:00:35,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:00:35,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:00:35,283 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:35,283 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:00:35,283 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394055041] [2021-06-05 08:00:35,283 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394055041] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:35,283 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [202738485] [2021-06-05 08:00:35,283 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 199 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 199 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:35,350 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2021-06-05 08:00:35,350 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:00:35,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 08:00:35,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:00:35,504 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:35,505 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [202738485] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:35,505 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:00:35,505 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 26 [2021-06-05 08:00:35,505 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072546492] [2021-06-05 08:00:35,505 INFO L462 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-06-05 08:00:35,505 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:00:35,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-06-05 08:00:35,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=554, Unknown=0, NotChecked=0, Total=650 [2021-06-05 08:00:35,506 INFO L87 Difference]: Start difference. First operand 3463 states and 9603 transitions. Second operand has 26 states, 26 states have (on average 5.076923076923077) internal successors, (132), 26 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:36,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:00:36,184 INFO L93 Difference]: Finished difference Result 4881 states and 12642 transitions. [2021-06-05 08:00:36,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-06-05 08:00:36,184 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.076923076923077) internal successors, (132), 26 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2021-06-05 08:00:36,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:00:36,189 INFO L225 Difference]: With dead ends: 4881 [2021-06-05 08:00:36,189 INFO L226 Difference]: Without dead ends: 4611 [2021-06-05 08:00:36,190 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 772 ImplicationChecksByTransitivity, 664.3ms TimeCoverageRelationStatistics Valid=831, Invalid=2709, Unknown=0, NotChecked=0, Total=3540 [2021-06-05 08:00:36,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4611 states. [2021-06-05 08:00:36,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4611 to 3538. [2021-06-05 08:00:36,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3538 states, 3537 states have (on average 2.7786259541984735) internal successors, (9828), 3537 states have internal predecessors, (9828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:36,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3538 states to 3538 states and 9828 transitions. [2021-06-05 08:00:36,234 INFO L78 Accepts]: Start accepts. Automaton has 3538 states and 9828 transitions. Word has length 130 [2021-06-05 08:00:36,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:00:36,235 INFO L482 AbstractCegarLoop]: Abstraction has 3538 states and 9828 transitions. [2021-06-05 08:00:36,235 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 5.076923076923077) internal successors, (132), 26 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:36,235 INFO L276 IsEmpty]: Start isEmpty. Operand 3538 states and 9828 transitions. [2021-06-05 08:00:36,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-06-05 08:00:36,238 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:00:36,238 INFO L521 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:00:36,438 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203,199 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:36,438 INFO L430 AbstractCegarLoop]: === Iteration 205 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:00:36,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:00:36,439 INFO L82 PathProgramCache]: Analyzing trace with hash -2101063193, now seen corresponding path program 196 times [2021-06-05 08:00:36,439 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:00:36,439 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286945479] [2021-06-05 08:00:36,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:00:36,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:00:36,642 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:36,642 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:00:36,642 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286945479] [2021-06-05 08:00:36,642 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286945479] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:36,642 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1053196033] [2021-06-05 08:00:36,642 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 200 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 200 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:36,701 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 08:00:36,701 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:00:36,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 08:00:36,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:00:36,842 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:36,843 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1053196033] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:36,843 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:00:36,843 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2021-06-05 08:00:36,843 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589085487] [2021-06-05 08:00:36,843 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 08:00:36,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:00:36,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 08:00:36,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=502, Unknown=0, NotChecked=0, Total=600 [2021-06-05 08:00:36,843 INFO L87 Difference]: Start difference. First operand 3538 states and 9828 transitions. Second operand has 25 states, 25 states have (on average 5.2) internal successors, (130), 25 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:37,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:00:37,419 INFO L93 Difference]: Finished difference Result 4906 states and 12767 transitions. [2021-06-05 08:00:37,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-05 08:00:37,419 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.2) internal successors, (130), 25 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2021-06-05 08:00:37,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:00:37,426 INFO L225 Difference]: With dead ends: 4906 [2021-06-05 08:00:37,426 INFO L226 Difference]: Without dead ends: 4636 [2021-06-05 08:00:37,426 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 750 ImplicationChecksByTransitivity, 573.3ms TimeCoverageRelationStatistics Valid=801, Invalid=2505, Unknown=0, NotChecked=0, Total=3306 [2021-06-05 08:00:37,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4636 states. [2021-06-05 08:00:37,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4636 to 3613. [2021-06-05 08:00:37,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3613 states, 3612 states have (on average 2.7832225913621262) internal successors, (10053), 3612 states have internal predecessors, (10053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:37,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3613 states to 3613 states and 10053 transitions. [2021-06-05 08:00:37,483 INFO L78 Accepts]: Start accepts. Automaton has 3613 states and 10053 transitions. Word has length 130 [2021-06-05 08:00:37,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:00:37,483 INFO L482 AbstractCegarLoop]: Abstraction has 3613 states and 10053 transitions. [2021-06-05 08:00:37,483 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 5.2) internal successors, (130), 25 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:37,483 INFO L276 IsEmpty]: Start isEmpty. Operand 3613 states and 10053 transitions. [2021-06-05 08:00:37,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-06-05 08:00:37,487 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:00:37,487 INFO L521 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:00:37,705 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 200 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable204 [2021-06-05 08:00:37,705 INFO L430 AbstractCegarLoop]: === Iteration 206 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:00:37,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:00:37,705 INFO L82 PathProgramCache]: Analyzing trace with hash -774307657, now seen corresponding path program 197 times [2021-06-05 08:00:37,706 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:00:37,706 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618187344] [2021-06-05 08:00:37,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:00:37,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:00:37,946 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:37,946 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:00:37,946 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618187344] [2021-06-05 08:00:37,946 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618187344] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:37,946 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1862622463] [2021-06-05 08:00:37,947 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 201 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 201 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:38,018 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2021-06-05 08:00:38,019 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:00:38,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 08:00:38,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:00:38,184 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:38,185 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1862622463] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:38,185 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:00:38,185 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 26 [2021-06-05 08:00:38,185 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423537713] [2021-06-05 08:00:38,185 INFO L462 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-06-05 08:00:38,185 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:00:38,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-06-05 08:00:38,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=553, Unknown=0, NotChecked=0, Total=650 [2021-06-05 08:00:38,186 INFO L87 Difference]: Start difference. First operand 3613 states and 10053 transitions. Second operand has 26 states, 26 states have (on average 5.076923076923077) internal successors, (132), 26 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:38,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:00:38,916 INFO L93 Difference]: Finished difference Result 4931 states and 12892 transitions. [2021-06-05 08:00:38,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-05 08:00:38,916 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.076923076923077) internal successors, (132), 26 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2021-06-05 08:00:38,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:00:38,921 INFO L225 Difference]: With dead ends: 4931 [2021-06-05 08:00:38,921 INFO L226 Difference]: Without dead ends: 4661 [2021-06-05 08:00:38,922 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 859 ImplicationChecksByTransitivity, 748.7ms TimeCoverageRelationStatistics Valid=908, Invalid=2874, Unknown=0, NotChecked=0, Total=3782 [2021-06-05 08:00:38,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4661 states. [2021-06-05 08:00:38,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4661 to 3688. [2021-06-05 08:00:38,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3688 states, 3687 states have (on average 2.787632221318145) internal successors, (10278), 3687 states have internal predecessors, (10278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:38,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3688 states to 3688 states and 10278 transitions. [2021-06-05 08:00:38,968 INFO L78 Accepts]: Start accepts. Automaton has 3688 states and 10278 transitions. Word has length 130 [2021-06-05 08:00:38,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:00:38,968 INFO L482 AbstractCegarLoop]: Abstraction has 3688 states and 10278 transitions. [2021-06-05 08:00:38,969 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 5.076923076923077) internal successors, (132), 26 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:38,969 INFO L276 IsEmpty]: Start isEmpty. Operand 3688 states and 10278 transitions. [2021-06-05 08:00:38,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-06-05 08:00:38,994 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:00:38,994 INFO L521 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:00:39,195 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205,201 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:39,195 INFO L430 AbstractCegarLoop]: === Iteration 207 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:00:39,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:00:39,196 INFO L82 PathProgramCache]: Analyzing trace with hash -320091483, now seen corresponding path program 198 times [2021-06-05 08:00:39,196 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:00:39,196 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199649833] [2021-06-05 08:00:39,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:00:39,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:00:39,377 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:39,377 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:00:39,377 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199649833] [2021-06-05 08:00:39,377 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199649833] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:39,377 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1367409829] [2021-06-05 08:00:39,377 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 202 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 202 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:39,444 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2021-06-05 08:00:39,444 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:00:39,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 08:00:39,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:00:39,579 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:39,580 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1367409829] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:39,580 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:00:39,580 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2021-06-05 08:00:39,580 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127561721] [2021-06-05 08:00:39,580 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 08:00:39,580 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:00:39,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 08:00:39,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=498, Unknown=0, NotChecked=0, Total=600 [2021-06-05 08:00:39,581 INFO L87 Difference]: Start difference. First operand 3688 states and 10278 transitions. Second operand has 25 states, 25 states have (on average 5.2) internal successors, (130), 25 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:40,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:00:40,189 INFO L93 Difference]: Finished difference Result 4956 states and 13017 transitions. [2021-06-05 08:00:40,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-05 08:00:40,189 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.2) internal successors, (130), 25 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2021-06-05 08:00:40,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:00:40,194 INFO L225 Difference]: With dead ends: 4956 [2021-06-05 08:00:40,195 INFO L226 Difference]: Without dead ends: 4686 [2021-06-05 08:00:40,195 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 834 ImplicationChecksByTransitivity, 578.8ms TimeCoverageRelationStatistics Valid=886, Invalid=2654, Unknown=0, NotChecked=0, Total=3540 [2021-06-05 08:00:40,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4686 states. [2021-06-05 08:00:40,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4686 to 3763. [2021-06-05 08:00:40,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3763 states, 3762 states have (on average 2.791866028708134) internal successors, (10503), 3762 states have internal predecessors, (10503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:40,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3763 states to 3763 states and 10503 transitions. [2021-06-05 08:00:40,243 INFO L78 Accepts]: Start accepts. Automaton has 3763 states and 10503 transitions. Word has length 130 [2021-06-05 08:00:40,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:00:40,243 INFO L482 AbstractCegarLoop]: Abstraction has 3763 states and 10503 transitions. [2021-06-05 08:00:40,243 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 5.2) internal successors, (130), 25 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:40,243 INFO L276 IsEmpty]: Start isEmpty. Operand 3763 states and 10503 transitions. [2021-06-05 08:00:40,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-06-05 08:00:40,246 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:00:40,246 INFO L521 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:00:40,447 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 202 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable206 [2021-06-05 08:00:40,447 INFO L430 AbstractCegarLoop]: === Iteration 208 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:00:40,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:00:40,447 INFO L82 PathProgramCache]: Analyzing trace with hash 678804853, now seen corresponding path program 199 times [2021-06-05 08:00:40,447 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:00:40,447 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234653958] [2021-06-05 08:00:40,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:00:40,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:00:40,626 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:40,627 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:00:40,627 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234653958] [2021-06-05 08:00:40,627 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234653958] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:40,627 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [980414868] [2021-06-05 08:00:40,627 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 203 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 203 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:40,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:00:40,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 08:00:40,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:00:40,839 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:40,839 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [980414868] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:40,839 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:00:40,839 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 26 [2021-06-05 08:00:40,839 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370822798] [2021-06-05 08:00:40,839 INFO L462 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-06-05 08:00:40,840 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:00:40,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-06-05 08:00:40,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=548, Unknown=0, NotChecked=0, Total=650 [2021-06-05 08:00:40,840 INFO L87 Difference]: Start difference. First operand 3763 states and 10503 transitions. Second operand has 26 states, 26 states have (on average 5.076923076923077) internal successors, (132), 26 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:41,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:00:41,634 INFO L93 Difference]: Finished difference Result 4981 states and 13142 transitions. [2021-06-05 08:00:41,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-06-05 08:00:41,634 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.076923076923077) internal successors, (132), 26 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2021-06-05 08:00:41,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:00:41,638 INFO L225 Difference]: With dead ends: 4981 [2021-06-05 08:00:41,638 INFO L226 Difference]: Without dead ends: 4711 [2021-06-05 08:00:41,638 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 950 ImplicationChecksByTransitivity, 742.4ms TimeCoverageRelationStatistics Valid=1001, Invalid=3031, Unknown=0, NotChecked=0, Total=4032 [2021-06-05 08:00:41,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4711 states. [2021-06-05 08:00:41,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4711 to 3838. [2021-06-05 08:00:41,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3838 states, 3837 states have (on average 2.7959343236903833) internal successors, (10728), 3837 states have internal predecessors, (10728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:41,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3838 states to 3838 states and 10728 transitions. [2021-06-05 08:00:41,682 INFO L78 Accepts]: Start accepts. Automaton has 3838 states and 10728 transitions. Word has length 130 [2021-06-05 08:00:41,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:00:41,682 INFO L482 AbstractCegarLoop]: Abstraction has 3838 states and 10728 transitions. [2021-06-05 08:00:41,682 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 5.076923076923077) internal successors, (132), 26 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:41,682 INFO L276 IsEmpty]: Start isEmpty. Operand 3838 states and 10728 transitions. [2021-06-05 08:00:41,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-06-05 08:00:41,685 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:00:41,685 INFO L521 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:00:41,886 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207,203 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:41,886 INFO L430 AbstractCegarLoop]: === Iteration 209 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:00:41,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:00:41,886 INFO L82 PathProgramCache]: Analyzing trace with hash -1200523037, now seen corresponding path program 200 times [2021-06-05 08:00:41,886 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:00:41,886 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403928330] [2021-06-05 08:00:41,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:00:41,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:00:42,070 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:42,070 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:00:42,070 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403928330] [2021-06-05 08:00:42,070 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403928330] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:42,070 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [730139745] [2021-06-05 08:00:42,070 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 204 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 204 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:42,129 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 08:00:42,130 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:00:42,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 08:00:42,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:00:42,268 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:42,268 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [730139745] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:42,268 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:00:42,269 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2021-06-05 08:00:42,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441381531] [2021-06-05 08:00:42,269 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 08:00:42,269 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:00:42,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 08:00:42,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=490, Unknown=0, NotChecked=0, Total=600 [2021-06-05 08:00:42,269 INFO L87 Difference]: Start difference. First operand 3838 states and 10728 transitions. Second operand has 25 states, 25 states have (on average 5.2) internal successors, (130), 25 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:42,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:00:42,941 INFO L93 Difference]: Finished difference Result 5006 states and 13267 transitions. [2021-06-05 08:00:42,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-05 08:00:42,942 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.2) internal successors, (130), 25 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2021-06-05 08:00:42,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:00:42,947 INFO L225 Difference]: With dead ends: 5006 [2021-06-05 08:00:42,947 INFO L226 Difference]: Without dead ends: 4736 [2021-06-05 08:00:42,948 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 922 ImplicationChecksByTransitivity, 603.5ms TimeCoverageRelationStatistics Valid=987, Invalid=2795, Unknown=0, NotChecked=0, Total=3782 [2021-06-05 08:00:42,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4736 states. [2021-06-05 08:00:42,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4736 to 3913. [2021-06-05 08:00:42,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3913 states, 3912 states have (on average 2.7998466257668713) internal successors, (10953), 3912 states have internal predecessors, (10953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:43,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3913 states to 3913 states and 10953 transitions. [2021-06-05 08:00:43,000 INFO L78 Accepts]: Start accepts. Automaton has 3913 states and 10953 transitions. Word has length 130 [2021-06-05 08:00:43,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:00:43,000 INFO L482 AbstractCegarLoop]: Abstraction has 3913 states and 10953 transitions. [2021-06-05 08:00:43,000 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 5.2) internal successors, (130), 25 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:43,000 INFO L276 IsEmpty]: Start isEmpty. Operand 3913 states and 10953 transitions. [2021-06-05 08:00:43,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-06-05 08:00:43,003 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:00:43,003 INFO L521 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:00:43,203 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208,204 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:43,204 INFO L430 AbstractCegarLoop]: === Iteration 210 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:00:43,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:00:43,204 INFO L82 PathProgramCache]: Analyzing trace with hash 829796275, now seen corresponding path program 201 times [2021-06-05 08:00:43,204 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:00:43,204 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846705605] [2021-06-05 08:00:43,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:00:43,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:00:43,383 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:43,383 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:00:43,383 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846705605] [2021-06-05 08:00:43,383 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846705605] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:43,383 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [12463967] [2021-06-05 08:00:43,383 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 205 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 205 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:43,451 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2021-06-05 08:00:43,451 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:00:43,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 08:00:43,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:00:43,601 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:43,602 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [12463967] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:43,602 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:00:43,602 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 26 [2021-06-05 08:00:43,602 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105191690] [2021-06-05 08:00:43,602 INFO L462 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-06-05 08:00:43,602 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:00:43,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-06-05 08:00:43,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=539, Unknown=0, NotChecked=0, Total=650 [2021-06-05 08:00:43,603 INFO L87 Difference]: Start difference. First operand 3913 states and 10953 transitions. Second operand has 26 states, 26 states have (on average 5.076923076923077) internal successors, (132), 26 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:44,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:00:44,443 INFO L93 Difference]: Finished difference Result 5031 states and 13392 transitions. [2021-06-05 08:00:44,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-06-05 08:00:44,444 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.076923076923077) internal successors, (132), 26 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2021-06-05 08:00:44,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:00:44,448 INFO L225 Difference]: With dead ends: 5031 [2021-06-05 08:00:44,449 INFO L226 Difference]: Without dead ends: 4761 [2021-06-05 08:00:44,449 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1045 ImplicationChecksByTransitivity, 787.4ms TimeCoverageRelationStatistics Valid=1110, Invalid=3180, Unknown=0, NotChecked=0, Total=4290 [2021-06-05 08:00:44,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4761 states. [2021-06-05 08:00:44,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4761 to 3988. [2021-06-05 08:00:44,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3988 states, 3987 states have (on average 2.8036117381489842) internal successors, (11178), 3987 states have internal predecessors, (11178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:44,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3988 states to 3988 states and 11178 transitions. [2021-06-05 08:00:44,506 INFO L78 Accepts]: Start accepts. Automaton has 3988 states and 11178 transitions. Word has length 130 [2021-06-05 08:00:44,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:00:44,506 INFO L482 AbstractCegarLoop]: Abstraction has 3988 states and 11178 transitions. [2021-06-05 08:00:44,506 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 5.076923076923077) internal successors, (132), 26 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:44,506 INFO L276 IsEmpty]: Start isEmpty. Operand 3988 states and 11178 transitions. [2021-06-05 08:00:44,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-06-05 08:00:44,510 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:00:44,510 INFO L521 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:00:44,710 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209,205 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:44,710 INFO L430 AbstractCegarLoop]: === Iteration 211 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:00:44,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:00:44,711 INFO L82 PathProgramCache]: Analyzing trace with hash 1444035745, now seen corresponding path program 202 times [2021-06-05 08:00:44,711 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:00:44,711 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563370786] [2021-06-05 08:00:44,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:00:44,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:00:44,885 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:44,886 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:00:44,886 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563370786] [2021-06-05 08:00:44,886 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563370786] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:44,886 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1508860534] [2021-06-05 08:00:44,886 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 206 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 206 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:44,945 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 08:00:44,945 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:00:44,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 08:00:44,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:00:45,081 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:45,081 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1508860534] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:45,081 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:00:45,082 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2021-06-05 08:00:45,082 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125934572] [2021-06-05 08:00:45,082 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 08:00:45,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:00:45,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 08:00:45,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=478, Unknown=0, NotChecked=0, Total=600 [2021-06-05 08:00:45,082 INFO L87 Difference]: Start difference. First operand 3988 states and 11178 transitions. Second operand has 25 states, 25 states have (on average 5.2) internal successors, (130), 25 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:45,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:00:45,787 INFO L93 Difference]: Finished difference Result 5056 states and 13517 transitions. [2021-06-05 08:00:45,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-05 08:00:45,787 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.2) internal successors, (130), 25 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2021-06-05 08:00:45,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:00:45,793 INFO L225 Difference]: With dead ends: 5056 [2021-06-05 08:00:45,793 INFO L226 Difference]: Without dead ends: 4786 [2021-06-05 08:00:45,793 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1014 ImplicationChecksByTransitivity, 636.8ms TimeCoverageRelationStatistics Valid=1104, Invalid=2928, Unknown=0, NotChecked=0, Total=4032 [2021-06-05 08:00:45,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4786 states. [2021-06-05 08:00:45,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4786 to 4063. [2021-06-05 08:00:45,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4063 states, 4062 states have (on average 2.807237813884786) internal successors, (11403), 4062 states have internal predecessors, (11403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:45,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4063 states to 4063 states and 11403 transitions. [2021-06-05 08:00:45,848 INFO L78 Accepts]: Start accepts. Automaton has 4063 states and 11403 transitions. Word has length 130 [2021-06-05 08:00:45,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:00:45,848 INFO L482 AbstractCegarLoop]: Abstraction has 4063 states and 11403 transitions. [2021-06-05 08:00:45,848 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 5.2) internal successors, (130), 25 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:45,848 INFO L276 IsEmpty]: Start isEmpty. Operand 4063 states and 11403 transitions. [2021-06-05 08:00:45,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-06-05 08:00:45,851 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:00:45,851 INFO L521 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:00:46,052 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 206 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable210 [2021-06-05 08:00:46,052 INFO L430 AbstractCegarLoop]: === Iteration 212 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:00:46,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:00:46,052 INFO L82 PathProgramCache]: Analyzing trace with hash -271206543, now seen corresponding path program 203 times [2021-06-05 08:00:46,052 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:00:46,052 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490308540] [2021-06-05 08:00:46,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:00:46,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:00:46,229 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:46,229 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:00:46,229 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490308540] [2021-06-05 08:00:46,229 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490308540] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:46,229 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1681187882] [2021-06-05 08:00:46,229 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 207 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 207 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:46,289 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2021-06-05 08:00:46,290 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:00:46,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 08:00:46,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:00:46,437 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:46,437 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1681187882] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:46,437 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:00:46,437 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 26 [2021-06-05 08:00:46,437 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789771310] [2021-06-05 08:00:46,437 INFO L462 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-06-05 08:00:46,438 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:00:46,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-06-05 08:00:46,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=526, Unknown=0, NotChecked=0, Total=650 [2021-06-05 08:00:46,438 INFO L87 Difference]: Start difference. First operand 4063 states and 11403 transitions. Second operand has 26 states, 26 states have (on average 5.076923076923077) internal successors, (132), 26 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:47,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:00:47,332 INFO L93 Difference]: Finished difference Result 5141 states and 13807 transitions. [2021-06-05 08:00:47,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-06-05 08:00:47,332 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.076923076923077) internal successors, (132), 26 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2021-06-05 08:00:47,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:00:47,338 INFO L225 Difference]: With dead ends: 5141 [2021-06-05 08:00:47,338 INFO L226 Difference]: Without dead ends: 4871 [2021-06-05 08:00:47,339 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1144 ImplicationChecksByTransitivity, 824.0ms TimeCoverageRelationStatistics Valid=1235, Invalid=3321, Unknown=0, NotChecked=0, Total=4556 [2021-06-05 08:00:47,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4871 states. [2021-06-05 08:00:47,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4871 to 4138. [2021-06-05 08:00:47,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4138 states, 4137 states have (on average 2.8155668358714045) internal successors, (11648), 4137 states have internal predecessors, (11648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:47,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4138 states to 4138 states and 11648 transitions. [2021-06-05 08:00:47,392 INFO L78 Accepts]: Start accepts. Automaton has 4138 states and 11648 transitions. Word has length 130 [2021-06-05 08:00:47,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:00:47,392 INFO L482 AbstractCegarLoop]: Abstraction has 4138 states and 11648 transitions. [2021-06-05 08:00:47,392 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 5.076923076923077) internal successors, (132), 26 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:47,392 INFO L276 IsEmpty]: Start isEmpty. Operand 4138 states and 11648 transitions. [2021-06-05 08:00:47,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-06-05 08:00:47,396 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:00:47,396 INFO L521 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:00:47,596 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 207 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable211 [2021-06-05 08:00:47,596 INFO L430 AbstractCegarLoop]: === Iteration 213 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:00:47,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:00:47,597 INFO L82 PathProgramCache]: Analyzing trace with hash -1303854145, now seen corresponding path program 204 times [2021-06-05 08:00:47,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:00:47,597 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626854307] [2021-06-05 08:00:47,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:00:47,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:00:47,776 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:47,776 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:00:47,776 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626854307] [2021-06-05 08:00:47,776 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626854307] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:47,776 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [241915380] [2021-06-05 08:00:47,776 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 208 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 208 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:47,843 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2021-06-05 08:00:47,843 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:00:47,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 08:00:47,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:00:47,976 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:47,976 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [241915380] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:47,976 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:00:47,976 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2021-06-05 08:00:47,976 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609396785] [2021-06-05 08:00:47,976 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 08:00:47,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:00:47,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 08:00:47,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=462, Unknown=0, NotChecked=0, Total=600 [2021-06-05 08:00:47,977 INFO L87 Difference]: Start difference. First operand 4138 states and 11648 transitions. Second operand has 25 states, 25 states have (on average 5.2) internal successors, (130), 25 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:48,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:00:48,707 INFO L93 Difference]: Finished difference Result 5908 states and 15981 transitions. [2021-06-05 08:00:48,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-06-05 08:00:48,707 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.2) internal successors, (130), 25 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2021-06-05 08:00:48,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:00:48,713 INFO L225 Difference]: With dead ends: 5908 [2021-06-05 08:00:48,713 INFO L226 Difference]: Without dead ends: 5638 [2021-06-05 08:00:48,714 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1109 ImplicationChecksByTransitivity, 675.8ms TimeCoverageRelationStatistics Valid=1238, Invalid=3052, Unknown=0, NotChecked=0, Total=4290 [2021-06-05 08:00:48,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5638 states. [2021-06-05 08:00:48,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5638 to 4318. [2021-06-05 08:00:48,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4318 states, 4317 states have (on average 2.8276580958999307) internal successors, (12207), 4317 states have internal predecessors, (12207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:48,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4318 states to 4318 states and 12207 transitions. [2021-06-05 08:00:48,767 INFO L78 Accepts]: Start accepts. Automaton has 4318 states and 12207 transitions. Word has length 130 [2021-06-05 08:00:48,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:00:48,767 INFO L482 AbstractCegarLoop]: Abstraction has 4318 states and 12207 transitions. [2021-06-05 08:00:48,767 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 5.2) internal successors, (130), 25 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:48,767 INFO L276 IsEmpty]: Start isEmpty. Operand 4318 states and 12207 transitions. [2021-06-05 08:00:48,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-06-05 08:00:48,771 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:00:48,771 INFO L521 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:00:48,971 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 208 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable212 [2021-06-05 08:00:48,972 INFO L430 AbstractCegarLoop]: === Iteration 214 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:00:48,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:00:48,972 INFO L82 PathProgramCache]: Analyzing trace with hash -1281510895, now seen corresponding path program 205 times [2021-06-05 08:00:48,972 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:00:48,972 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387850553] [2021-06-05 08:00:48,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:00:48,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:00:49,173 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:49,173 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:00:49,173 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387850553] [2021-06-05 08:00:49,173 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387850553] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:49,173 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [818966941] [2021-06-05 08:00:49,173 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 209 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 209 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:49,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:00:49,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 08:00:49,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:00:49,393 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:49,393 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [818966941] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:49,393 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:00:49,393 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 27 [2021-06-05 08:00:49,393 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725645427] [2021-06-05 08:00:49,393 INFO L462 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-06-05 08:00:49,393 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:00:49,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-06-05 08:00:49,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=558, Unknown=0, NotChecked=0, Total=702 [2021-06-05 08:00:49,394 INFO L87 Difference]: Start difference. First operand 4318 states and 12207 transitions. Second operand has 27 states, 27 states have (on average 4.925925925925926) internal successors, (133), 27 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:50,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:00:50,372 INFO L93 Difference]: Finished difference Result 5851 states and 15841 transitions. [2021-06-05 08:00:50,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-06-05 08:00:50,372 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.925925925925926) internal successors, (133), 27 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2021-06-05 08:00:50,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:00:50,379 INFO L225 Difference]: With dead ends: 5851 [2021-06-05 08:00:50,379 INFO L226 Difference]: Without dead ends: 5276 [2021-06-05 08:00:50,380 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1424 ImplicationChecksByTransitivity, 933.8ms TimeCoverageRelationStatistics Valid=1449, Invalid=3953, Unknown=0, NotChecked=0, Total=5402 [2021-06-05 08:00:50,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5276 states. [2021-06-05 08:00:50,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5276 to 4353. [2021-06-05 08:00:50,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4353 states, 4352 states have (on average 2.8223805147058822) internal successors, (12283), 4352 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 08:00:50,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4353 states to 4353 states and 12283 transitions. [2021-06-05 08:00:50,433 INFO L78 Accepts]: Start accepts. Automaton has 4353 states and 12283 transitions. Word has length 130 [2021-06-05 08:00:50,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:00:50,433 INFO L482 AbstractCegarLoop]: Abstraction has 4353 states and 12283 transitions. [2021-06-05 08:00:50,433 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 4.925925925925926) internal successors, (133), 27 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:50,433 INFO L276 IsEmpty]: Start isEmpty. Operand 4353 states and 12283 transitions. [2021-06-05 08:00:50,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-06-05 08:00:50,436 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:00:50,436 INFO L521 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:00:50,637 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 209 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable213 [2021-06-05 08:00:50,637 INFO L430 AbstractCegarLoop]: === Iteration 215 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:00:50,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:00:50,637 INFO L82 PathProgramCache]: Analyzing trace with hash -1365615058, now seen corresponding path program 206 times [2021-06-05 08:00:50,637 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:00:50,637 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553961898] [2021-06-05 08:00:50,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:00:50,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:00:50,864 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:50,865 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:00:50,865 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553961898] [2021-06-05 08:00:50,865 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553961898] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:50,865 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [949019] [2021-06-05 08:00:50,865 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 210 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 210 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:50,924 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 08:00:50,924 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:00:50,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 08:00:50,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:00:51,079 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:51,079 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [949019] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:51,079 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:00:51,079 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 26 [2021-06-05 08:00:51,080 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349654989] [2021-06-05 08:00:51,080 INFO L462 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-06-05 08:00:51,080 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:00:51,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-06-05 08:00:51,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=509, Unknown=0, NotChecked=0, Total=650 [2021-06-05 08:00:51,080 INFO L87 Difference]: Start difference. First operand 4353 states and 12283 transitions. Second operand has 26 states, 26 states have (on average 5.1923076923076925) internal successors, (135), 26 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:51,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:00:51,554 INFO L93 Difference]: Finished difference Result 5696 states and 15097 transitions. [2021-06-05 08:00:51,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-06-05 08:00:51,554 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.1923076923076925) internal successors, (135), 26 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 135 [2021-06-05 08:00:51,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:00:51,559 INFO L225 Difference]: With dead ends: 5696 [2021-06-05 08:00:51,559 INFO L226 Difference]: Without dead ends: 5426 [2021-06-05 08:00:51,559 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 482 ImplicationChecksByTransitivity, 510.1ms TimeCoverageRelationStatistics Valid=687, Invalid=1965, Unknown=0, NotChecked=0, Total=2652 [2021-06-05 08:00:51,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5426 states. [2021-06-05 08:00:51,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5426 to 4353. [2021-06-05 08:00:51,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4353 states, 4352 states have (on average 2.8223805147058822) internal successors, (12283), 4352 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 08:00:51,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4353 states to 4353 states and 12283 transitions. [2021-06-05 08:00:51,605 INFO L78 Accepts]: Start accepts. Automaton has 4353 states and 12283 transitions. Word has length 135 [2021-06-05 08:00:51,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:00:51,606 INFO L482 AbstractCegarLoop]: Abstraction has 4353 states and 12283 transitions. [2021-06-05 08:00:51,606 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 5.1923076923076925) internal successors, (135), 26 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:51,606 INFO L276 IsEmpty]: Start isEmpty. Operand 4353 states and 12283 transitions. [2021-06-05 08:00:51,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-06-05 08:00:51,609 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:00:51,609 INFO L521 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:00:51,809 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 210 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable214 [2021-06-05 08:00:51,810 INFO L430 AbstractCegarLoop]: === Iteration 216 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:00:51,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:00:51,810 INFO L82 PathProgramCache]: Analyzing trace with hash -1066754, now seen corresponding path program 207 times [2021-06-05 08:00:51,810 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:00:51,810 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817676325] [2021-06-05 08:00:51,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:00:51,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:00:52,054 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:52,054 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:00:52,054 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817676325] [2021-06-05 08:00:52,054 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817676325] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:52,054 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1509155615] [2021-06-05 08:00:52,054 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 211 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 211 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:52,121 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2021-06-05 08:00:52,121 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:00:52,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 08:00:52,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:00:52,302 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:52,302 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1509155615] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:52,302 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:00:52,302 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 27 [2021-06-05 08:00:52,302 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778926748] [2021-06-05 08:00:52,302 INFO L462 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-06-05 08:00:52,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:00:52,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-06-05 08:00:52,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=567, Unknown=0, NotChecked=0, Total=702 [2021-06-05 08:00:52,303 INFO L87 Difference]: Start difference. First operand 4353 states and 12283 transitions. Second operand has 27 states, 27 states have (on average 5.074074074074074) internal successors, (137), 27 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:52,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:00:52,792 INFO L93 Difference]: Finished difference Result 6141 states and 15987 transitions. [2021-06-05 08:00:52,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-06-05 08:00:52,792 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 5.074074074074074) internal successors, (137), 27 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 135 [2021-06-05 08:00:52,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:00:52,798 INFO L225 Difference]: With dead ends: 6141 [2021-06-05 08:00:52,799 INFO L226 Difference]: Without dead ends: 5871 [2021-06-05 08:00:52,799 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 569 ImplicationChecksByTransitivity, 548.7ms TimeCoverageRelationStatistics Valid=743, Invalid=2227, Unknown=0, NotChecked=0, Total=2970 [2021-06-05 08:00:52,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5871 states. [2021-06-05 08:00:52,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5871 to 4353. [2021-06-05 08:00:52,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4353 states, 4352 states have (on average 2.8223805147058822) internal successors, (12283), 4352 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 08:00:52,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4353 states to 4353 states and 12283 transitions. [2021-06-05 08:00:52,853 INFO L78 Accepts]: Start accepts. Automaton has 4353 states and 12283 transitions. Word has length 135 [2021-06-05 08:00:52,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:00:52,853 INFO L482 AbstractCegarLoop]: Abstraction has 4353 states and 12283 transitions. [2021-06-05 08:00:52,853 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 5.074074074074074) internal successors, (137), 27 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:52,853 INFO L276 IsEmpty]: Start isEmpty. Operand 4353 states and 12283 transitions. [2021-06-05 08:00:52,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-06-05 08:00:52,857 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:00:52,857 INFO L521 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:00:53,057 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215,211 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:53,058 INFO L430 AbstractCegarLoop]: === Iteration 217 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:00:53,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:00:53,058 INFO L82 PathProgramCache]: Analyzing trace with hash 2016668524, now seen corresponding path program 208 times [2021-06-05 08:00:53,058 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:00:53,058 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239033672] [2021-06-05 08:00:53,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:00:53,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:00:53,275 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:53,275 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:00:53,276 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239033672] [2021-06-05 08:00:53,276 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239033672] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:53,276 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2124834749] [2021-06-05 08:00:53,276 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 212 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 212 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:53,335 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 08:00:53,336 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:00:53,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 08:00:53,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:00:53,487 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:53,487 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2124834749] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:53,487 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:00:53,487 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 26 [2021-06-05 08:00:53,487 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096300563] [2021-06-05 08:00:53,488 INFO L462 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-06-05 08:00:53,488 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:00:53,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-06-05 08:00:53,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=524, Unknown=0, NotChecked=0, Total=650 [2021-06-05 08:00:53,488 INFO L87 Difference]: Start difference. First operand 4353 states and 12283 transitions. Second operand has 26 states, 26 states have (on average 5.1923076923076925) internal successors, (135), 26 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:53,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:00:53,973 INFO L93 Difference]: Finished difference Result 6096 states and 15897 transitions. [2021-06-05 08:00:53,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-05 08:00:53,974 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.1923076923076925) internal successors, (135), 26 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 135 [2021-06-05 08:00:53,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:00:53,980 INFO L225 Difference]: With dead ends: 6096 [2021-06-05 08:00:53,980 INFO L226 Difference]: Without dead ends: 5826 [2021-06-05 08:00:53,980 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 622 ImplicationChecksByTransitivity, 531.4ms TimeCoverageRelationStatistics Valid=741, Invalid=2229, Unknown=0, NotChecked=0, Total=2970 [2021-06-05 08:00:53,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5826 states. [2021-06-05 08:00:54,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5826 to 4353. [2021-06-05 08:00:54,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4353 states, 4352 states have (on average 2.8223805147058822) internal successors, (12283), 4352 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 08:00:54,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4353 states to 4353 states and 12283 transitions. [2021-06-05 08:00:54,033 INFO L78 Accepts]: Start accepts. Automaton has 4353 states and 12283 transitions. Word has length 135 [2021-06-05 08:00:54,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:00:54,033 INFO L482 AbstractCegarLoop]: Abstraction has 4353 states and 12283 transitions. [2021-06-05 08:00:54,033 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 5.1923076923076925) internal successors, (135), 26 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:54,033 INFO L276 IsEmpty]: Start isEmpty. Operand 4353 states and 12283 transitions. [2021-06-05 08:00:54,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-06-05 08:00:54,037 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:00:54,037 INFO L521 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:00:54,237 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 212 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable216 [2021-06-05 08:00:54,238 INFO L430 AbstractCegarLoop]: === Iteration 218 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:00:54,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:00:54,238 INFO L82 PathProgramCache]: Analyzing trace with hash 1118145084, now seen corresponding path program 209 times [2021-06-05 08:00:54,238 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:00:54,238 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407227099] [2021-06-05 08:00:54,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:00:54,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:00:54,466 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:54,466 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:00:54,466 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407227099] [2021-06-05 08:00:54,466 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407227099] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:54,466 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1147335084] [2021-06-05 08:00:54,466 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 213 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 213 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:54,527 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2021-06-05 08:00:54,528 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:00:54,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 08:00:54,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:00:54,697 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:54,697 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1147335084] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:54,697 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:00:54,697 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 27 [2021-06-05 08:00:54,697 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771282286] [2021-06-05 08:00:54,697 INFO L462 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-06-05 08:00:54,697 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:00:54,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-06-05 08:00:54,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=581, Unknown=0, NotChecked=0, Total=702 [2021-06-05 08:00:54,698 INFO L87 Difference]: Start difference. First operand 4353 states and 12283 transitions. Second operand has 27 states, 27 states have (on average 5.074074074074074) internal successors, (137), 27 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:55,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:00:55,269 INFO L93 Difference]: Finished difference Result 6046 states and 15797 transitions. [2021-06-05 08:00:55,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-06-05 08:00:55,269 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 5.074074074074074) internal successors, (137), 27 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 135 [2021-06-05 08:00:55,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:00:55,275 INFO L225 Difference]: With dead ends: 6046 [2021-06-05 08:00:55,275 INFO L226 Difference]: Without dead ends: 5776 [2021-06-05 08:00:55,276 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 640 ImplicationChecksByTransitivity, 587.9ms TimeCoverageRelationStatistics Valid=763, Invalid=2429, Unknown=0, NotChecked=0, Total=3192 [2021-06-05 08:00:55,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5776 states. [2021-06-05 08:00:55,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5776 to 4353. [2021-06-05 08:00:55,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4353 states, 4352 states have (on average 2.8223805147058822) internal successors, (12283), 4352 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 08:00:55,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4353 states to 4353 states and 12283 transitions. [2021-06-05 08:00:55,326 INFO L78 Accepts]: Start accepts. Automaton has 4353 states and 12283 transitions. Word has length 135 [2021-06-05 08:00:55,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:00:55,326 INFO L482 AbstractCegarLoop]: Abstraction has 4353 states and 12283 transitions. [2021-06-05 08:00:55,326 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 5.074074074074074) internal successors, (137), 27 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:55,326 INFO L276 IsEmpty]: Start isEmpty. Operand 4353 states and 12283 transitions. [2021-06-05 08:00:55,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-06-05 08:00:55,330 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:00:55,330 INFO L521 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:00:55,530 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217,213 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:55,531 INFO L430 AbstractCegarLoop]: === Iteration 219 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:00:55,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:00:55,531 INFO L82 PathProgramCache]: Analyzing trace with hash -496808406, now seen corresponding path program 210 times [2021-06-05 08:00:55,531 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:00:55,531 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295534489] [2021-06-05 08:00:55,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:00:55,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:00:55,780 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:55,780 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:00:55,781 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295534489] [2021-06-05 08:00:55,781 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295534489] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:55,781 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1298456081] [2021-06-05 08:00:55,781 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 214 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 214 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:55,858 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2021-06-05 08:00:55,859 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:00:55,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 08:00:55,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:00:56,006 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:56,007 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1298456081] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:56,007 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:00:56,007 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 26 [2021-06-05 08:00:56,007 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558539486] [2021-06-05 08:00:56,007 INFO L462 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-06-05 08:00:56,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:00:56,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-06-05 08:00:56,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=535, Unknown=0, NotChecked=0, Total=650 [2021-06-05 08:00:56,008 INFO L87 Difference]: Start difference. First operand 4353 states and 12283 transitions. Second operand has 26 states, 26 states have (on average 5.1923076923076925) internal successors, (135), 26 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:56,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:00:56,538 INFO L93 Difference]: Finished difference Result 5996 states and 15697 transitions. [2021-06-05 08:00:56,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-06-05 08:00:56,538 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.1923076923076925) internal successors, (135), 26 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 135 [2021-06-05 08:00:56,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:00:56,543 INFO L225 Difference]: With dead ends: 5996 [2021-06-05 08:00:56,543 INFO L226 Difference]: Without dead ends: 5726 [2021-06-05 08:00:56,544 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 703 ImplicationChecksByTransitivity, 575.9ms TimeCoverageRelationStatistics Valid=775, Invalid=2417, Unknown=0, NotChecked=0, Total=3192 [2021-06-05 08:00:56,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5726 states. [2021-06-05 08:00:56,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5726 to 4353. [2021-06-05 08:00:56,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4353 states, 4352 states have (on average 2.8223805147058822) internal successors, (12283), 4352 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 08:00:56,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4353 states to 4353 states and 12283 transitions. [2021-06-05 08:00:56,594 INFO L78 Accepts]: Start accepts. Automaton has 4353 states and 12283 transitions. Word has length 135 [2021-06-05 08:00:56,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:00:56,594 INFO L482 AbstractCegarLoop]: Abstraction has 4353 states and 12283 transitions. [2021-06-05 08:00:56,594 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 5.1923076923076925) internal successors, (135), 26 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:56,594 INFO L276 IsEmpty]: Start isEmpty. Operand 4353 states and 12283 transitions. [2021-06-05 08:00:56,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-06-05 08:00:56,597 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:00:56,597 INFO L521 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:00:56,798 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218,214 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:56,798 INFO L430 AbstractCegarLoop]: === Iteration 220 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:00:56,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:00:56,798 INFO L82 PathProgramCache]: Analyzing trace with hash -877252358, now seen corresponding path program 211 times [2021-06-05 08:00:56,799 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:00:56,799 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843845170] [2021-06-05 08:00:56,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:00:56,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:00:57,019 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:57,019 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:00:57,019 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843845170] [2021-06-05 08:00:57,019 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843845170] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:57,019 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2120718504] [2021-06-05 08:00:57,019 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 215 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 215 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:57,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:00:57,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 08:00:57,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:00:57,243 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:57,244 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2120718504] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:57,244 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:00:57,244 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 27 [2021-06-05 08:00:57,244 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683374388] [2021-06-05 08:00:57,244 INFO L462 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-06-05 08:00:57,244 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:00:57,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-06-05 08:00:57,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=591, Unknown=0, NotChecked=0, Total=702 [2021-06-05 08:00:57,245 INFO L87 Difference]: Start difference. First operand 4353 states and 12283 transitions. Second operand has 27 states, 27 states have (on average 5.074074074074074) internal successors, (137), 27 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:57,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:00:57,848 INFO L93 Difference]: Finished difference Result 5946 states and 15597 transitions. [2021-06-05 08:00:57,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-05 08:00:57,849 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 5.074074074074074) internal successors, (137), 27 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 135 [2021-06-05 08:00:57,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:00:57,855 INFO L225 Difference]: With dead ends: 5946 [2021-06-05 08:00:57,855 INFO L226 Difference]: Without dead ends: 5676 [2021-06-05 08:00:57,856 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 724 ImplicationChecksByTransitivity, 623.2ms TimeCoverageRelationStatistics Valid=799, Invalid=2623, Unknown=0, NotChecked=0, Total=3422 [2021-06-05 08:00:57,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5676 states. [2021-06-05 08:00:57,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5676 to 4353. [2021-06-05 08:00:57,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4353 states, 4352 states have (on average 2.8223805147058822) internal successors, (12283), 4352 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 08:00:57,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4353 states to 4353 states and 12283 transitions. [2021-06-05 08:00:57,911 INFO L78 Accepts]: Start accepts. Automaton has 4353 states and 12283 transitions. Word has length 135 [2021-06-05 08:00:57,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:00:57,911 INFO L482 AbstractCegarLoop]: Abstraction has 4353 states and 12283 transitions. [2021-06-05 08:00:57,912 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 5.074074074074074) internal successors, (137), 27 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:57,912 INFO L276 IsEmpty]: Start isEmpty. Operand 4353 states and 12283 transitions. [2021-06-05 08:00:57,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-06-05 08:00:57,916 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:00:57,916 INFO L521 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:00:58,116 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219,215 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:58,116 INFO L430 AbstractCegarLoop]: === Iteration 221 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:00:58,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:00:58,116 INFO L82 PathProgramCache]: Analyzing trace with hash -252877208, now seen corresponding path program 212 times [2021-06-05 08:00:58,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:00:58,117 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804157033] [2021-06-05 08:00:58,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:00:58,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:00:58,321 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:58,321 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:00:58,321 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804157033] [2021-06-05 08:00:58,321 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804157033] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:58,321 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1231174101] [2021-06-05 08:00:58,321 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 216 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 216 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:58,382 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 08:00:58,382 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:00:58,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 08:00:58,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:00:58,530 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:58,530 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1231174101] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:58,530 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:00:58,530 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 26 [2021-06-05 08:00:58,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095094180] [2021-06-05 08:00:58,530 INFO L462 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-06-05 08:00:58,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:00:58,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-06-05 08:00:58,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=542, Unknown=0, NotChecked=0, Total=650 [2021-06-05 08:00:58,531 INFO L87 Difference]: Start difference. First operand 4353 states and 12283 transitions. Second operand has 26 states, 26 states have (on average 5.1923076923076925) internal successors, (135), 26 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:59,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:00:59,093 INFO L93 Difference]: Finished difference Result 5896 states and 15497 transitions. [2021-06-05 08:00:59,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-05 08:00:59,093 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.1923076923076925) internal successors, (135), 26 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 135 [2021-06-05 08:00:59,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:00:59,099 INFO L225 Difference]: With dead ends: 5896 [2021-06-05 08:00:59,099 INFO L226 Difference]: Without dead ends: 5626 [2021-06-05 08:00:59,099 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 792 ImplicationChecksByTransitivity, 568.8ms TimeCoverageRelationStatistics Valid=825, Invalid=2597, Unknown=0, NotChecked=0, Total=3422 [2021-06-05 08:00:59,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5626 states. [2021-06-05 08:00:59,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5626 to 4353. [2021-06-05 08:00:59,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4353 states, 4352 states have (on average 2.8223805147058822) internal successors, (12283), 4352 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 08:00:59,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4353 states to 4353 states and 12283 transitions. [2021-06-05 08:00:59,150 INFO L78 Accepts]: Start accepts. Automaton has 4353 states and 12283 transitions. Word has length 135 [2021-06-05 08:00:59,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:00:59,151 INFO L482 AbstractCegarLoop]: Abstraction has 4353 states and 12283 transitions. [2021-06-05 08:00:59,151 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 5.1923076923076925) internal successors, (135), 26 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:59,151 INFO L276 IsEmpty]: Start isEmpty. Operand 4353 states and 12283 transitions. [2021-06-05 08:00:59,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-06-05 08:00:59,154 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:00:59,154 INFO L521 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:00:59,355 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220,216 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:59,355 INFO L430 AbstractCegarLoop]: === Iteration 222 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:00:59,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:00:59,355 INFO L82 PathProgramCache]: Analyzing trace with hash 556174648, now seen corresponding path program 213 times [2021-06-05 08:00:59,355 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:00:59,355 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855557392] [2021-06-05 08:00:59,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:00:59,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:00:59,572 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:59,572 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:00:59,572 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855557392] [2021-06-05 08:00:59,572 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855557392] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:59,572 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1232168752] [2021-06-05 08:00:59,572 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 217 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 217 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:59,640 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2021-06-05 08:00:59,640 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:00:59,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 08:00:59,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:00:59,800 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:59,800 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1232168752] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:59,800 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:00:59,800 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 27 [2021-06-05 08:00:59,800 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780713562] [2021-06-05 08:00:59,801 INFO L462 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-06-05 08:00:59,801 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:00:59,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-06-05 08:00:59,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=597, Unknown=0, NotChecked=0, Total=702 [2021-06-05 08:00:59,801 INFO L87 Difference]: Start difference. First operand 4353 states and 12283 transitions. Second operand has 27 states, 27 states have (on average 5.074074074074074) internal successors, (137), 27 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:00,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:01:00,460 INFO L93 Difference]: Finished difference Result 5846 states and 15397 transitions. [2021-06-05 08:01:00,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-06-05 08:01:00,460 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 5.074074074074074) internal successors, (137), 27 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 135 [2021-06-05 08:01:00,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:01:00,466 INFO L225 Difference]: With dead ends: 5846 [2021-06-05 08:01:00,467 INFO L226 Difference]: Without dead ends: 5576 [2021-06-05 08:01:00,467 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 816 ImplicationChecksByTransitivity, 657.9ms TimeCoverageRelationStatistics Valid=851, Invalid=2809, Unknown=0, NotChecked=0, Total=3660 [2021-06-05 08:01:00,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5576 states. [2021-06-05 08:01:00,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5576 to 4353. [2021-06-05 08:01:00,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4353 states, 4352 states have (on average 2.8223805147058822) internal successors, (12283), 4352 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 08:01:00,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4353 states to 4353 states and 12283 transitions. [2021-06-05 08:01:00,515 INFO L78 Accepts]: Start accepts. Automaton has 4353 states and 12283 transitions. Word has length 135 [2021-06-05 08:01:00,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:01:00,516 INFO L482 AbstractCegarLoop]: Abstraction has 4353 states and 12283 transitions. [2021-06-05 08:01:00,516 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 5.074074074074074) internal successors, (137), 27 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:00,516 INFO L276 IsEmpty]: Start isEmpty. Operand 4353 states and 12283 transitions. [2021-06-05 08:01:00,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-06-05 08:01:00,519 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:01:00,519 INFO L521 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:01:00,719 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 217 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable221 [2021-06-05 08:01:00,720 INFO L430 AbstractCegarLoop]: === Iteration 223 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:01:00,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:01:00,720 INFO L82 PathProgramCache]: Analyzing trace with hash -835775450, now seen corresponding path program 214 times [2021-06-05 08:01:00,720 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:01:00,720 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415966690] [2021-06-05 08:01:00,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:01:00,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:01:00,917 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:00,917 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:01:00,917 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415966690] [2021-06-05 08:01:00,917 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415966690] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:00,917 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1558919260] [2021-06-05 08:01:00,917 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 218 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 218 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:01:00,978 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 08:01:00,978 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:01:00,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 08:01:00,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:01:01,124 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:01,124 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1558919260] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:01,124 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:01:01,124 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 26 [2021-06-05 08:01:01,124 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844801302] [2021-06-05 08:01:01,125 INFO L462 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-06-05 08:01:01,125 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:01:01,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-06-05 08:01:01,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=545, Unknown=0, NotChecked=0, Total=650 [2021-06-05 08:01:01,125 INFO L87 Difference]: Start difference. First operand 4353 states and 12283 transitions. Second operand has 26 states, 26 states have (on average 5.1923076923076925) internal successors, (135), 26 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:01,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:01:01,748 INFO L93 Difference]: Finished difference Result 5796 states and 15297 transitions. [2021-06-05 08:01:01,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-05 08:01:01,748 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.1923076923076925) internal successors, (135), 26 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 135 [2021-06-05 08:01:01,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:01:01,754 INFO L225 Difference]: With dead ends: 5796 [2021-06-05 08:01:01,755 INFO L226 Difference]: Without dead ends: 5526 [2021-06-05 08:01:01,755 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 885 ImplicationChecksByTransitivity, 598.1ms TimeCoverageRelationStatistics Valid=891, Invalid=2769, Unknown=0, NotChecked=0, Total=3660 [2021-06-05 08:01:01,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5526 states. [2021-06-05 08:01:01,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5526 to 4353. [2021-06-05 08:01:01,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4353 states, 4352 states have (on average 2.8223805147058822) internal successors, (12283), 4352 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 08:01:01,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4353 states to 4353 states and 12283 transitions. [2021-06-05 08:01:01,805 INFO L78 Accepts]: Start accepts. Automaton has 4353 states and 12283 transitions. Word has length 135 [2021-06-05 08:01:01,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:01:01,805 INFO L482 AbstractCegarLoop]: Abstraction has 4353 states and 12283 transitions. [2021-06-05 08:01:01,806 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 5.1923076923076925) internal successors, (135), 26 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:01,806 INFO L276 IsEmpty]: Start isEmpty. Operand 4353 states and 12283 transitions. [2021-06-05 08:01:01,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-06-05 08:01:01,809 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:01:01,809 INFO L521 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:01:02,009 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 218 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable222 [2021-06-05 08:01:02,010 INFO L430 AbstractCegarLoop]: === Iteration 224 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:01:02,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:01:02,010 INFO L82 PathProgramCache]: Analyzing trace with hash -1080852746, now seen corresponding path program 215 times [2021-06-05 08:01:02,010 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:01:02,010 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172591604] [2021-06-05 08:01:02,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:01:02,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:01:02,247 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:02,247 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:01:02,247 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172591604] [2021-06-05 08:01:02,247 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172591604] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:02,247 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1818136375] [2021-06-05 08:01:02,247 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 219 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 219 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:01:02,329 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2021-06-05 08:01:02,329 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:01:02,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 08:01:02,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:01:02,491 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:02,491 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1818136375] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:02,491 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:01:02,491 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 27 [2021-06-05 08:01:02,491 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223938922] [2021-06-05 08:01:02,491 INFO L462 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-06-05 08:01:02,491 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:01:02,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-06-05 08:01:02,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=599, Unknown=0, NotChecked=0, Total=702 [2021-06-05 08:01:02,492 INFO L87 Difference]: Start difference. First operand 4353 states and 12283 transitions. Second operand has 27 states, 27 states have (on average 5.074074074074074) internal successors, (137), 27 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:03,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:01:03,188 INFO L93 Difference]: Finished difference Result 5746 states and 15197 transitions. [2021-06-05 08:01:03,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-05 08:01:03,188 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 5.074074074074074) internal successors, (137), 27 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 135 [2021-06-05 08:01:03,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:01:03,194 INFO L225 Difference]: With dead ends: 5746 [2021-06-05 08:01:03,194 INFO L226 Difference]: Without dead ends: 5476 [2021-06-05 08:01:03,195 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 912 ImplicationChecksByTransitivity, 716.4ms TimeCoverageRelationStatistics Valid=919, Invalid=2987, Unknown=0, NotChecked=0, Total=3906 [2021-06-05 08:01:03,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5476 states. [2021-06-05 08:01:03,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5476 to 4353. [2021-06-05 08:01:03,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4353 states, 4352 states have (on average 2.8223805147058822) internal successors, (12283), 4352 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 08:01:03,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4353 states to 4353 states and 12283 transitions. [2021-06-05 08:01:03,246 INFO L78 Accepts]: Start accepts. Automaton has 4353 states and 12283 transitions. Word has length 135 [2021-06-05 08:01:03,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:01:03,247 INFO L482 AbstractCegarLoop]: Abstraction has 4353 states and 12283 transitions. [2021-06-05 08:01:03,247 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 5.074074074074074) internal successors, (137), 27 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:03,247 INFO L276 IsEmpty]: Start isEmpty. Operand 4353 states and 12283 transitions. [2021-06-05 08:01:03,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-06-05 08:01:03,251 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:01:03,251 INFO L521 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:01:03,451 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 219 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable223 [2021-06-05 08:01:03,451 INFO L430 AbstractCegarLoop]: === Iteration 225 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:01:03,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:01:03,451 INFO L82 PathProgramCache]: Analyzing trace with hash -1457703068, now seen corresponding path program 216 times [2021-06-05 08:01:03,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:01:03,452 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369292204] [2021-06-05 08:01:03,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:01:03,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:01:03,679 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:03,680 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:01:03,680 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369292204] [2021-06-05 08:01:03,680 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369292204] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:03,680 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1393620185] [2021-06-05 08:01:03,680 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 220 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 220 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:01:03,764 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2021-06-05 08:01:03,765 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:01:03,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 08:01:03,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:01:03,967 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:03,967 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1393620185] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:03,967 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:01:03,967 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 26 [2021-06-05 08:01:03,967 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868545763] [2021-06-05 08:01:03,967 INFO L462 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-06-05 08:01:03,968 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:01:03,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-06-05 08:01:03,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=544, Unknown=0, NotChecked=0, Total=650 [2021-06-05 08:01:03,968 INFO L87 Difference]: Start difference. First operand 4353 states and 12283 transitions. Second operand has 26 states, 26 states have (on average 5.1923076923076925) internal successors, (135), 26 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:04,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:01:04,614 INFO L93 Difference]: Finished difference Result 5696 states and 15097 transitions. [2021-06-05 08:01:04,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-05 08:01:04,614 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.1923076923076925) internal successors, (135), 26 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 135 [2021-06-05 08:01:04,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:01:04,620 INFO L225 Difference]: With dead ends: 5696 [2021-06-05 08:01:04,620 INFO L226 Difference]: Without dead ends: 5426 [2021-06-05 08:01:04,620 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 982 ImplicationChecksByTransitivity, 649.3ms TimeCoverageRelationStatistics Valid=973, Invalid=2933, Unknown=0, NotChecked=0, Total=3906 [2021-06-05 08:01:04,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5426 states. [2021-06-05 08:01:04,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5426 to 4353. [2021-06-05 08:01:04,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4353 states, 4352 states have (on average 2.8223805147058822) internal successors, (12283), 4352 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 08:01:04,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4353 states to 4353 states and 12283 transitions. [2021-06-05 08:01:04,667 INFO L78 Accepts]: Start accepts. Automaton has 4353 states and 12283 transitions. Word has length 135 [2021-06-05 08:01:04,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:01:04,667 INFO L482 AbstractCegarLoop]: Abstraction has 4353 states and 12283 transitions. [2021-06-05 08:01:04,667 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 5.1923076923076925) internal successors, (135), 26 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:04,668 INFO L276 IsEmpty]: Start isEmpty. Operand 4353 states and 12283 transitions. [2021-06-05 08:01:04,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-06-05 08:01:04,671 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:01:04,671 INFO L521 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:01:04,872 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 220 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable224 [2021-06-05 08:01:04,873 INFO L430 AbstractCegarLoop]: === Iteration 226 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:01:04,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:01:04,873 INFO L82 PathProgramCache]: Analyzing trace with hash -130947532, now seen corresponding path program 217 times [2021-06-05 08:01:04,873 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:01:04,873 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142384993] [2021-06-05 08:01:04,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:01:04,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:01:05,074 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:05,074 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:01:05,074 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142384993] [2021-06-05 08:01:05,074 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142384993] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:05,074 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [837309036] [2021-06-05 08:01:05,074 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 221 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 221 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:01:05,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:01:05,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 08:01:05,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:01:05,290 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:05,290 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [837309036] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:05,290 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:01:05,290 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 27 [2021-06-05 08:01:05,290 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483711788] [2021-06-05 08:01:05,290 INFO L462 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-06-05 08:01:05,290 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:01:05,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-06-05 08:01:05,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=597, Unknown=0, NotChecked=0, Total=702 [2021-06-05 08:01:05,291 INFO L87 Difference]: Start difference. First operand 4353 states and 12283 transitions. Second operand has 27 states, 27 states have (on average 5.074074074074074) internal successors, (137), 27 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:06,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:01:06,034 INFO L93 Difference]: Finished difference Result 5646 states and 14997 transitions. [2021-06-05 08:01:06,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-06-05 08:01:06,034 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 5.074074074074074) internal successors, (137), 27 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 135 [2021-06-05 08:01:06,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:01:06,040 INFO L225 Difference]: With dead ends: 5646 [2021-06-05 08:01:06,040 INFO L226 Difference]: Without dead ends: 5376 [2021-06-05 08:01:06,041 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1012 ImplicationChecksByTransitivity, 720.9ms TimeCoverageRelationStatistics Valid=1003, Invalid=3157, Unknown=0, NotChecked=0, Total=4160 [2021-06-05 08:01:06,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5376 states. [2021-06-05 08:01:06,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5376 to 4353. [2021-06-05 08:01:06,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4353 states, 4352 states have (on average 2.8223805147058822) internal successors, (12283), 4352 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 08:01:06,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4353 states to 4353 states and 12283 transitions. [2021-06-05 08:01:06,104 INFO L78 Accepts]: Start accepts. Automaton has 4353 states and 12283 transitions. Word has length 135 [2021-06-05 08:01:06,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:01:06,105 INFO L482 AbstractCegarLoop]: Abstraction has 4353 states and 12283 transitions. [2021-06-05 08:01:06,105 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 5.074074074074074) internal successors, (137), 27 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:06,105 INFO L276 IsEmpty]: Start isEmpty. Operand 4353 states and 12283 transitions. [2021-06-05 08:01:06,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-06-05 08:01:06,108 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:01:06,108 INFO L521 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:01:06,309 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable225,221 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:01:06,309 INFO L430 AbstractCegarLoop]: === Iteration 227 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:01:06,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:01:06,309 INFO L82 PathProgramCache]: Analyzing trace with hash 323268642, now seen corresponding path program 218 times [2021-06-05 08:01:06,309 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:01:06,309 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078303939] [2021-06-05 08:01:06,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:01:06,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:01:06,522 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:06,522 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:01:06,522 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078303939] [2021-06-05 08:01:06,522 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078303939] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:06,522 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1370345966] [2021-06-05 08:01:06,522 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 222 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 222 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:01:06,581 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 08:01:06,581 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:01:06,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 08:01:06,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:01:06,724 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:06,724 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1370345966] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:06,724 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:01:06,724 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 26 [2021-06-05 08:01:06,724 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279020100] [2021-06-05 08:01:06,724 INFO L462 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-06-05 08:01:06,725 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:01:06,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-06-05 08:01:06,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=539, Unknown=0, NotChecked=0, Total=650 [2021-06-05 08:01:06,725 INFO L87 Difference]: Start difference. First operand 4353 states and 12283 transitions. Second operand has 26 states, 26 states have (on average 5.1923076923076925) internal successors, (135), 26 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:07,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:01:07,364 INFO L93 Difference]: Finished difference Result 5596 states and 14897 transitions. [2021-06-05 08:01:07,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-05 08:01:07,364 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.1923076923076925) internal successors, (135), 26 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 135 [2021-06-05 08:01:07,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:01:07,371 INFO L225 Difference]: With dead ends: 5596 [2021-06-05 08:01:07,371 INFO L226 Difference]: Without dead ends: 5326 [2021-06-05 08:01:07,371 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1083 ImplicationChecksByTransitivity, 616.2ms TimeCoverageRelationStatistics Valid=1071, Invalid=3089, Unknown=0, NotChecked=0, Total=4160 [2021-06-05 08:01:07,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5326 states. [2021-06-05 08:01:07,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5326 to 4353. [2021-06-05 08:01:07,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4353 states, 4352 states have (on average 2.8223805147058822) internal successors, (12283), 4352 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 08:01:07,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4353 states to 4353 states and 12283 transitions. [2021-06-05 08:01:07,421 INFO L78 Accepts]: Start accepts. Automaton has 4353 states and 12283 transitions. Word has length 135 [2021-06-05 08:01:07,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:01:07,421 INFO L482 AbstractCegarLoop]: Abstraction has 4353 states and 12283 transitions. [2021-06-05 08:01:07,421 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 5.1923076923076925) internal successors, (135), 26 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:07,421 INFO L276 IsEmpty]: Start isEmpty. Operand 4353 states and 12283 transitions. [2021-06-05 08:01:07,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-06-05 08:01:07,425 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:01:07,425 INFO L521 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:01:07,625 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 222 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable226 [2021-06-05 08:01:07,625 INFO L430 AbstractCegarLoop]: === Iteration 228 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:01:07,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:01:07,625 INFO L82 PathProgramCache]: Analyzing trace with hash 1322164978, now seen corresponding path program 219 times [2021-06-05 08:01:07,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:01:07,626 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752602050] [2021-06-05 08:01:07,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:01:07,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:01:07,819 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:07,819 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:01:07,819 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752602050] [2021-06-05 08:01:07,819 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752602050] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:07,820 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [532238071] [2021-06-05 08:01:07,820 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 223 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 223 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:01:07,887 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2021-06-05 08:01:07,887 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:01:07,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 08:01:07,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:01:08,051 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:08,051 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [532238071] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:08,051 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:01:08,052 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 27 [2021-06-05 08:01:08,052 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353170661] [2021-06-05 08:01:08,052 INFO L462 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-06-05 08:01:08,052 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:01:08,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-06-05 08:01:08,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=591, Unknown=0, NotChecked=0, Total=702 [2021-06-05 08:01:08,052 INFO L87 Difference]: Start difference. First operand 4353 states and 12283 transitions. Second operand has 27 states, 27 states have (on average 5.074074074074074) internal successors, (137), 27 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:08,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:01:08,873 INFO L93 Difference]: Finished difference Result 5546 states and 14797 transitions. [2021-06-05 08:01:08,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-06-05 08:01:08,874 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 5.074074074074074) internal successors, (137), 27 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 135 [2021-06-05 08:01:08,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:01:08,879 INFO L225 Difference]: With dead ends: 5546 [2021-06-05 08:01:08,879 INFO L226 Difference]: Without dead ends: 5276 [2021-06-05 08:01:08,879 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1116 ImplicationChecksByTransitivity, 777.3ms TimeCoverageRelationStatistics Valid=1103, Invalid=3319, Unknown=0, NotChecked=0, Total=4422 [2021-06-05 08:01:08,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5276 states. [2021-06-05 08:01:08,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5276 to 4353. [2021-06-05 08:01:08,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4353 states, 4352 states have (on average 2.8223805147058822) internal successors, (12283), 4352 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 08:01:08,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4353 states to 4353 states and 12283 transitions. [2021-06-05 08:01:08,929 INFO L78 Accepts]: Start accepts. Automaton has 4353 states and 12283 transitions. Word has length 135 [2021-06-05 08:01:08,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:01:08,930 INFO L482 AbstractCegarLoop]: Abstraction has 4353 states and 12283 transitions. [2021-06-05 08:01:08,930 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 5.074074074074074) internal successors, (137), 27 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:08,930 INFO L276 IsEmpty]: Start isEmpty. Operand 4353 states and 12283 transitions. [2021-06-05 08:01:08,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-06-05 08:01:08,934 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:01:08,934 INFO L521 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:01:09,134 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable227,223 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:01:09,134 INFO L430 AbstractCegarLoop]: === Iteration 229 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:01:09,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:01:09,135 INFO L82 PathProgramCache]: Analyzing trace with hash -557162912, now seen corresponding path program 220 times [2021-06-05 08:01:09,135 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:01:09,135 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057210499] [2021-06-05 08:01:09,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:01:09,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:01:09,329 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:09,330 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:01:09,330 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057210499] [2021-06-05 08:01:09,330 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057210499] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:09,330 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [196113652] [2021-06-05 08:01:09,330 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 224 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 224 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:01:09,388 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 08:01:09,389 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:01:09,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 08:01:09,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:01:09,530 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:09,531 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [196113652] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:09,531 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:01:09,531 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 26 [2021-06-05 08:01:09,531 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694870052] [2021-06-05 08:01:09,531 INFO L462 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-06-05 08:01:09,531 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:01:09,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-06-05 08:01:09,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=530, Unknown=0, NotChecked=0, Total=650 [2021-06-05 08:01:09,531 INFO L87 Difference]: Start difference. First operand 4353 states and 12283 transitions. Second operand has 26 states, 26 states have (on average 5.1923076923076925) internal successors, (135), 26 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:10,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:01:10,221 INFO L93 Difference]: Finished difference Result 5496 states and 14697 transitions. [2021-06-05 08:01:10,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-06-05 08:01:10,222 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.1923076923076925) internal successors, (135), 26 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 135 [2021-06-05 08:01:10,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:01:10,227 INFO L225 Difference]: With dead ends: 5496 [2021-06-05 08:01:10,228 INFO L226 Difference]: Without dead ends: 5226 [2021-06-05 08:01:10,228 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1188 ImplicationChecksByTransitivity, 651.3ms TimeCoverageRelationStatistics Valid=1185, Invalid=3237, Unknown=0, NotChecked=0, Total=4422 [2021-06-05 08:01:10,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5226 states. [2021-06-05 08:01:10,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5226 to 4353. [2021-06-05 08:01:10,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4353 states, 4352 states have (on average 2.8223805147058822) internal successors, (12283), 4352 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 08:01:10,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4353 states to 4353 states and 12283 transitions. [2021-06-05 08:01:10,280 INFO L78 Accepts]: Start accepts. Automaton has 4353 states and 12283 transitions. Word has length 135 [2021-06-05 08:01:10,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:01:10,281 INFO L482 AbstractCegarLoop]: Abstraction has 4353 states and 12283 transitions. [2021-06-05 08:01:10,281 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 5.1923076923076925) internal successors, (135), 26 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:10,281 INFO L276 IsEmpty]: Start isEmpty. Operand 4353 states and 12283 transitions. [2021-06-05 08:01:10,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-06-05 08:01:10,284 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:01:10,284 INFO L521 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:01:10,485 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 224 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable228 [2021-06-05 08:01:10,485 INFO L430 AbstractCegarLoop]: === Iteration 230 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:01:10,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:01:10,485 INFO L82 PathProgramCache]: Analyzing trace with hash 1473156400, now seen corresponding path program 221 times [2021-06-05 08:01:10,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:01:10,486 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355363432] [2021-06-05 08:01:10,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:01:10,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:01:10,673 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:10,673 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:01:10,673 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355363432] [2021-06-05 08:01:10,673 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355363432] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:10,673 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1240963573] [2021-06-05 08:01:10,673 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 225 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 225 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:01:10,734 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2021-06-05 08:01:10,734 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:01:10,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 08:01:10,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:01:10,892 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:10,892 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1240963573] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:10,892 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:01:10,892 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 27 [2021-06-05 08:01:10,892 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400335143] [2021-06-05 08:01:10,892 INFO L462 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-06-05 08:01:10,892 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:01:10,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-06-05 08:01:10,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=581, Unknown=0, NotChecked=0, Total=702 [2021-06-05 08:01:10,893 INFO L87 Difference]: Start difference. First operand 4353 states and 12283 transitions. Second operand has 27 states, 27 states have (on average 5.074074074074074) internal successors, (137), 27 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:11,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:01:11,743 INFO L93 Difference]: Finished difference Result 5446 states and 14597 transitions. [2021-06-05 08:01:11,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-06-05 08:01:11,743 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 5.074074074074074) internal successors, (137), 27 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 135 [2021-06-05 08:01:11,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:01:11,749 INFO L225 Difference]: With dead ends: 5446 [2021-06-05 08:01:11,749 INFO L226 Difference]: Without dead ends: 5176 [2021-06-05 08:01:11,750 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1224 ImplicationChecksByTransitivity, 812.2ms TimeCoverageRelationStatistics Valid=1219, Invalid=3473, Unknown=0, NotChecked=0, Total=4692 [2021-06-05 08:01:11,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5176 states. [2021-06-05 08:01:11,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5176 to 4353. [2021-06-05 08:01:11,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4353 states, 4352 states have (on average 2.8223805147058822) internal successors, (12283), 4352 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 08:01:11,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4353 states to 4353 states and 12283 transitions. [2021-06-05 08:01:11,800 INFO L78 Accepts]: Start accepts. Automaton has 4353 states and 12283 transitions. Word has length 135 [2021-06-05 08:01:11,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:01:11,800 INFO L482 AbstractCegarLoop]: Abstraction has 4353 states and 12283 transitions. [2021-06-05 08:01:11,800 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 5.074074074074074) internal successors, (137), 27 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:11,800 INFO L276 IsEmpty]: Start isEmpty. Operand 4353 states and 12283 transitions. [2021-06-05 08:01:11,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-06-05 08:01:11,804 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:01:11,804 INFO L521 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:01:12,004 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable229,225 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:01:12,004 INFO L430 AbstractCegarLoop]: === Iteration 231 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:01:12,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:01:12,005 INFO L82 PathProgramCache]: Analyzing trace with hash 2087395870, now seen corresponding path program 222 times [2021-06-05 08:01:12,005 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:01:12,005 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498512807] [2021-06-05 08:01:12,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:01:12,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:01:12,187 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:12,187 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:01:12,187 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498512807] [2021-06-05 08:01:12,187 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498512807] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:12,187 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1699741542] [2021-06-05 08:01:12,188 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 226 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 226 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:01:12,255 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2021-06-05 08:01:12,255 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:01:12,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 08:01:12,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:01:12,395 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:12,395 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1699741542] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:12,396 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:01:12,396 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 26 [2021-06-05 08:01:12,396 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482477993] [2021-06-05 08:01:12,396 INFO L462 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-06-05 08:01:12,396 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:01:12,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-06-05 08:01:12,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=517, Unknown=0, NotChecked=0, Total=650 [2021-06-05 08:01:12,396 INFO L87 Difference]: Start difference. First operand 4353 states and 12283 transitions. Second operand has 26 states, 26 states have (on average 5.1923076923076925) internal successors, (135), 26 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:13,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:01:13,117 INFO L93 Difference]: Finished difference Result 5396 states and 14497 transitions. [2021-06-05 08:01:13,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-06-05 08:01:13,117 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.1923076923076925) internal successors, (135), 26 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 135 [2021-06-05 08:01:13,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:01:13,123 INFO L225 Difference]: With dead ends: 5396 [2021-06-05 08:01:13,123 INFO L226 Difference]: Without dead ends: 5126 [2021-06-05 08:01:13,124 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1297 ImplicationChecksByTransitivity, 673.7ms TimeCoverageRelationStatistics Valid=1315, Invalid=3377, Unknown=0, NotChecked=0, Total=4692 [2021-06-05 08:01:13,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5126 states. [2021-06-05 08:01:13,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5126 to 4353. [2021-06-05 08:01:13,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4353 states, 4352 states have (on average 2.8223805147058822) internal successors, (12283), 4352 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 08:01:13,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4353 states to 4353 states and 12283 transitions. [2021-06-05 08:01:13,174 INFO L78 Accepts]: Start accepts. Automaton has 4353 states and 12283 transitions. Word has length 135 [2021-06-05 08:01:13,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:01:13,174 INFO L482 AbstractCegarLoop]: Abstraction has 4353 states and 12283 transitions. [2021-06-05 08:01:13,174 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 5.1923076923076925) internal successors, (135), 26 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:13,175 INFO L276 IsEmpty]: Start isEmpty. Operand 4353 states and 12283 transitions. [2021-06-05 08:01:13,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-06-05 08:01:13,178 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:01:13,178 INFO L521 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:01:13,378 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable230,226 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:01:13,379 INFO L430 AbstractCegarLoop]: === Iteration 232 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:01:13,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:01:13,379 INFO L82 PathProgramCache]: Analyzing trace with hash 372153582, now seen corresponding path program 223 times [2021-06-05 08:01:13,379 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:01:13,379 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881879729] [2021-06-05 08:01:13,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:01:13,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:01:13,565 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:13,565 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:01:13,565 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881879729] [2021-06-05 08:01:13,566 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881879729] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:13,566 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1207831546] [2021-06-05 08:01:13,566 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 227 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 227 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:01:13,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:01:13,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 08:01:13,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:01:13,801 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:13,801 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1207831546] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:13,801 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:01:13,801 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 27 [2021-06-05 08:01:13,801 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977452880] [2021-06-05 08:01:13,801 INFO L462 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-06-05 08:01:13,801 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:01:13,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-06-05 08:01:13,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=567, Unknown=0, NotChecked=0, Total=702 [2021-06-05 08:01:13,802 INFO L87 Difference]: Start difference. First operand 4353 states and 12283 transitions. Second operand has 27 states, 27 states have (on average 5.074074074074074) internal successors, (137), 27 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:14,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:01:14,695 INFO L93 Difference]: Finished difference Result 5406 states and 14547 transitions. [2021-06-05 08:01:14,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-06-05 08:01:14,695 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 5.074074074074074) internal successors, (137), 27 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 135 [2021-06-05 08:01:14,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:01:14,701 INFO L225 Difference]: With dead ends: 5406 [2021-06-05 08:01:14,701 INFO L226 Difference]: Without dead ends: 5136 [2021-06-05 08:01:14,702 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1336 ImplicationChecksByTransitivity, 840.0ms TimeCoverageRelationStatistics Valid=1351, Invalid=3619, Unknown=0, NotChecked=0, Total=4970 [2021-06-05 08:01:14,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5136 states. [2021-06-05 08:01:14,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5136 to 4353. [2021-06-05 08:01:14,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4353 states, 4352 states have (on average 2.823529411764706) internal successors, (12288), 4352 states have internal predecessors, (12288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:14,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4353 states to 4353 states and 12288 transitions. [2021-06-05 08:01:14,751 INFO L78 Accepts]: Start accepts. Automaton has 4353 states and 12288 transitions. Word has length 135 [2021-06-05 08:01:14,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:01:14,751 INFO L482 AbstractCegarLoop]: Abstraction has 4353 states and 12288 transitions. [2021-06-05 08:01:14,751 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 5.074074074074074) internal successors, (137), 27 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:14,751 INFO L276 IsEmpty]: Start isEmpty. Operand 4353 states and 12288 transitions. [2021-06-05 08:01:14,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-06-05 08:01:14,755 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:01:14,755 INFO L521 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:01:14,955 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable231,227 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:01:14,955 INFO L430 AbstractCegarLoop]: === Iteration 233 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:01:14,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:01:14,956 INFO L82 PathProgramCache]: Analyzing trace with hash -660494020, now seen corresponding path program 224 times [2021-06-05 08:01:14,956 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:01:14,956 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574242099] [2021-06-05 08:01:14,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:01:14,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:01:15,152 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:15,152 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:01:15,152 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574242099] [2021-06-05 08:01:15,152 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574242099] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:15,152 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1513454247] [2021-06-05 08:01:15,152 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 228 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 228 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:01:15,211 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 08:01:15,212 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:01:15,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 08:01:15,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:01:15,358 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:15,358 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1513454247] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:15,358 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:01:15,358 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 26 [2021-06-05 08:01:15,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440089464] [2021-06-05 08:01:15,359 INFO L462 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-06-05 08:01:15,359 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:01:15,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-06-05 08:01:15,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=500, Unknown=0, NotChecked=0, Total=650 [2021-06-05 08:01:15,359 INFO L87 Difference]: Start difference. First operand 4353 states and 12288 transitions. Second operand has 26 states, 26 states have (on average 5.1923076923076925) internal successors, (135), 26 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:16,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:01:16,133 INFO L93 Difference]: Finished difference Result 6148 states and 16671 transitions. [2021-06-05 08:01:16,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-06-05 08:01:16,133 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.1923076923076925) internal successors, (135), 26 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 135 [2021-06-05 08:01:16,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:01:16,138 INFO L225 Difference]: With dead ends: 6148 [2021-06-05 08:01:16,138 INFO L226 Difference]: Without dead ends: 5878 [2021-06-05 08:01:16,139 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1409 ImplicationChecksByTransitivity, 706.7ms TimeCoverageRelationStatistics Valid=1462, Invalid=3508, Unknown=0, NotChecked=0, Total=4970 [2021-06-05 08:01:16,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5878 states. [2021-06-05 08:01:16,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5878 to 4533. [2021-06-05 08:01:16,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4533 states, 4532 states have (on average 2.834730803177405) internal successors, (12847), 4532 states have internal predecessors, (12847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:16,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4533 states to 4533 states and 12847 transitions. [2021-06-05 08:01:16,192 INFO L78 Accepts]: Start accepts. Automaton has 4533 states and 12847 transitions. Word has length 135 [2021-06-05 08:01:16,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:01:16,192 INFO L482 AbstractCegarLoop]: Abstraction has 4533 states and 12847 transitions. [2021-06-05 08:01:16,193 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 5.1923076923076925) internal successors, (135), 26 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:16,193 INFO L276 IsEmpty]: Start isEmpty. Operand 4533 states and 12847 transitions. [2021-06-05 08:01:16,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-06-05 08:01:16,196 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:01:16,196 INFO L521 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:01:16,396 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable232,228 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:01:16,397 INFO L430 AbstractCegarLoop]: === Iteration 234 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:01:16,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:01:16,397 INFO L82 PathProgramCache]: Analyzing trace with hash -638150770, now seen corresponding path program 225 times [2021-06-05 08:01:16,397 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:01:16,397 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457726789] [2021-06-05 08:01:16,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:01:16,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:01:16,587 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:16,587 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:01:16,587 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457726789] [2021-06-05 08:01:16,587 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457726789] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:16,587 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [35900842] [2021-06-05 08:01:16,587 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 229 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 229 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:01:16,655 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2021-06-05 08:01:16,655 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:01:16,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 08:01:16,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:01:16,816 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:16,816 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [35900842] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:16,817 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:01:16,817 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 28 [2021-06-05 08:01:16,817 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428487088] [2021-06-05 08:01:16,817 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-06-05 08:01:16,817 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:01:16,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-06-05 08:01:16,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=600, Unknown=0, NotChecked=0, Total=756 [2021-06-05 08:01:16,817 INFO L87 Difference]: Start difference. First operand 4533 states and 12847 transitions. Second operand has 28 states, 28 states have (on average 4.928571428571429) internal successors, (138), 28 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:17,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:01:17,792 INFO L93 Difference]: Finished difference Result 6016 states and 16336 transitions. [2021-06-05 08:01:17,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-06-05 08:01:17,792 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.928571428571429) internal successors, (138), 28 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 135 [2021-06-05 08:01:17,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:01:17,799 INFO L225 Difference]: With dead ends: 6016 [2021-06-05 08:01:17,799 INFO L226 Difference]: Without dead ends: 5441 [2021-06-05 08:01:17,800 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1639 ImplicationChecksByTransitivity, 924.7ms TimeCoverageRelationStatistics Valid=1574, Invalid=4278, Unknown=0, NotChecked=0, Total=5852 [2021-06-05 08:01:17,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5441 states. [2021-06-05 08:01:17,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5441 to 2924. [2021-06-05 08:01:17,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2924 states, 2923 states have (on average 2.738966814916182) internal successors, (8006), 2923 states have internal predecessors, (8006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:17,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2924 states to 2924 states and 8006 transitions. [2021-06-05 08:01:17,842 INFO L78 Accepts]: Start accepts. Automaton has 2924 states and 8006 transitions. Word has length 135 [2021-06-05 08:01:17,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:01:17,842 INFO L482 AbstractCegarLoop]: Abstraction has 2924 states and 8006 transitions. [2021-06-05 08:01:17,842 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 4.928571428571429) internal successors, (138), 28 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:17,843 INFO L276 IsEmpty]: Start isEmpty. Operand 2924 states and 8006 transitions. [2021-06-05 08:01:17,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-06-05 08:01:17,845 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:01:17,845 INFO L521 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:01:18,048 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 229 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable233 [2021-06-05 08:01:18,049 INFO L430 AbstractCegarLoop]: === Iteration 235 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:01:18,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:01:18,049 INFO L82 PathProgramCache]: Analyzing trace with hash 2057178814, now seen corresponding path program 226 times [2021-06-05 08:01:18,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:01:18,049 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704600624] [2021-06-05 08:01:18,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:01:18,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:01:18,293 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:18,293 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:01:18,293 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704600624] [2021-06-05 08:01:18,293 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704600624] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:18,293 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [92041564] [2021-06-05 08:01:18,293 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 230 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 230 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:01:18,352 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 08:01:18,353 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:01:18,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-05 08:01:18,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:01:18,586 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:18,586 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [92041564] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:18,586 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:01:18,587 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 31 [2021-06-05 08:01:18,587 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018608726] [2021-06-05 08:01:18,587 INFO L462 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-06-05 08:01:18,587 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:01:18,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-06-05 08:01:18,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=722, Unknown=0, NotChecked=0, Total=930 [2021-06-05 08:01:18,587 INFO L87 Difference]: Start difference. First operand 2924 states and 8006 transitions. Second operand has 31 states, 31 states have (on average 5.483870967741935) internal successors, (170), 31 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:19,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:01:19,098 INFO L93 Difference]: Finished difference Result 4114 states and 10706 transitions. [2021-06-05 08:01:19,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-06-05 08:01:19,098 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.483870967741935) internal successors, (170), 31 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2021-06-05 08:01:19,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:01:19,103 INFO L225 Difference]: With dead ends: 4114 [2021-06-05 08:01:19,103 INFO L226 Difference]: Without dead ends: 3780 [2021-06-05 08:01:19,103 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 692 ImplicationChecksByTransitivity, 606.6ms TimeCoverageRelationStatistics Valid=926, Invalid=2496, Unknown=0, NotChecked=0, Total=3422 [2021-06-05 08:01:19,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3780 states. [2021-06-05 08:01:19,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3780 to 3009. [2021-06-05 08:01:19,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3009 states, 3008 states have (on average 2.7180851063829787) internal successors, (8176), 3008 states have internal predecessors, (8176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:19,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3009 states to 3009 states and 8176 transitions. [2021-06-05 08:01:19,138 INFO L78 Accepts]: Start accepts. Automaton has 3009 states and 8176 transitions. Word has length 140 [2021-06-05 08:01:19,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:01:19,138 INFO L482 AbstractCegarLoop]: Abstraction has 3009 states and 8176 transitions. [2021-06-05 08:01:19,138 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 5.483870967741935) internal successors, (170), 31 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:19,138 INFO L276 IsEmpty]: Start isEmpty. Operand 3009 states and 8176 transitions. [2021-06-05 08:01:19,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-06-05 08:01:19,141 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:01:19,141 INFO L521 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:01:19,341 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 230 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable234 [2021-06-05 08:01:19,341 INFO L430 AbstractCegarLoop]: === Iteration 236 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:01:19,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:01:19,342 INFO L82 PathProgramCache]: Analyzing trace with hash -416801150, now seen corresponding path program 227 times [2021-06-05 08:01:19,342 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:01:19,342 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107444070] [2021-06-05 08:01:19,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:01:19,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:01:19,589 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:19,589 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:01:19,590 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107444070] [2021-06-05 08:01:19,590 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107444070] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:19,590 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1779210933] [2021-06-05 08:01:19,590 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 231 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 231 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:01:19,651 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2021-06-05 08:01:19,651 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:01:19,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 28 conjunts are in the unsatisfiable core [2021-06-05 08:01:19,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:01:19,842 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:19,842 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1779210933] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:19,842 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:01:19,842 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 28 [2021-06-05 08:01:19,842 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687976669] [2021-06-05 08:01:19,843 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-06-05 08:01:19,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:01:19,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-06-05 08:01:19,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=581, Unknown=0, NotChecked=0, Total=756 [2021-06-05 08:01:19,843 INFO L87 Difference]: Start difference. First operand 3009 states and 8176 transitions. Second operand has 28 states, 28 states have (on average 5.071428571428571) internal successors, (142), 28 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:20,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:01:20,300 INFO L93 Difference]: Finished difference Result 5136 states and 12687 transitions. [2021-06-05 08:01:20,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-06-05 08:01:20,301 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.071428571428571) internal successors, (142), 28 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2021-06-05 08:01:20,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:01:20,306 INFO L225 Difference]: With dead ends: 5136 [2021-06-05 08:01:20,306 INFO L226 Difference]: Without dead ends: 4866 [2021-06-05 08:01:20,306 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 474 ImplicationChecksByTransitivity, 544.0ms TimeCoverageRelationStatistics Valid=767, Invalid=1989, Unknown=0, NotChecked=0, Total=2756 [2021-06-05 08:01:20,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4866 states. [2021-06-05 08:01:20,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4866 to 3153. [2021-06-05 08:01:20,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3153 states, 3152 states have (on average 2.7262055837563453) internal successors, (8593), 3152 states have internal predecessors, (8593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:20,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3153 states to 3153 states and 8593 transitions. [2021-06-05 08:01:20,343 INFO L78 Accepts]: Start accepts. Automaton has 3153 states and 8593 transitions. Word has length 140 [2021-06-05 08:01:20,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:01:20,343 INFO L482 AbstractCegarLoop]: Abstraction has 3153 states and 8593 transitions. [2021-06-05 08:01:20,343 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 5.071428571428571) internal successors, (142), 28 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:20,343 INFO L276 IsEmpty]: Start isEmpty. Operand 3153 states and 8593 transitions. [2021-06-05 08:01:20,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-06-05 08:01:20,345 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:01:20,346 INFO L521 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:01:20,546 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 231 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable235 [2021-06-05 08:01:20,546 INFO L430 AbstractCegarLoop]: === Iteration 237 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:01:20,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:01:20,546 INFO L82 PathProgramCache]: Analyzing trace with hash -1293535918, now seen corresponding path program 228 times [2021-06-05 08:01:20,547 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:01:20,547 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332431689] [2021-06-05 08:01:20,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:01:20,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:01:20,804 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:20,804 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:01:20,804 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332431689] [2021-06-05 08:01:20,804 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332431689] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:20,804 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1997169500] [2021-06-05 08:01:20,804 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 232 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 232 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:01:20,888 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2021-06-05 08:01:20,888 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:01:20,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 28 conjunts are in the unsatisfiable core [2021-06-05 08:01:20,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:01:21,100 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:21,100 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1997169500] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:21,101 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:01:21,101 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 29 [2021-06-05 08:01:21,101 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402415222] [2021-06-05 08:01:21,101 INFO L462 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-06-05 08:01:21,101 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:01:21,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-06-05 08:01:21,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=644, Unknown=0, NotChecked=0, Total=812 [2021-06-05 08:01:21,101 INFO L87 Difference]: Start difference. First operand 3153 states and 8593 transitions. Second operand has 29 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 29 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:21,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:01:21,600 INFO L93 Difference]: Finished difference Result 5096 states and 12682 transitions. [2021-06-05 08:01:21,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-06-05 08:01:21,601 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 29 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2021-06-05 08:01:21,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:01:21,606 INFO L225 Difference]: With dead ends: 5096 [2021-06-05 08:01:21,606 INFO L226 Difference]: Without dead ends: 4826 [2021-06-05 08:01:21,606 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 556 ImplicationChecksByTransitivity, 606.2ms TimeCoverageRelationStatistics Valid=840, Invalid=2352, Unknown=0, NotChecked=0, Total=3192 [2021-06-05 08:01:21,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4826 states. [2021-06-05 08:01:21,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4826 to 3228. [2021-06-05 08:01:21,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3228 states, 3227 states have (on average 2.732568949488689) internal successors, (8818), 3227 states have internal predecessors, (8818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:21,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3228 states to 3228 states and 8818 transitions. [2021-06-05 08:01:21,650 INFO L78 Accepts]: Start accepts. Automaton has 3228 states and 8818 transitions. Word has length 140 [2021-06-05 08:01:21,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:01:21,650 INFO L482 AbstractCegarLoop]: Abstraction has 3228 states and 8818 transitions. [2021-06-05 08:01:21,650 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 29 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:21,650 INFO L276 IsEmpty]: Start isEmpty. Operand 3228 states and 8818 transitions. [2021-06-05 08:01:21,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-06-05 08:01:21,653 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:01:21,653 INFO L521 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:01:21,853 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable236,232 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:01:21,853 INFO L430 AbstractCegarLoop]: === Iteration 238 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:01:21,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:01:21,854 INFO L82 PathProgramCache]: Analyzing trace with hash 1264105024, now seen corresponding path program 229 times [2021-06-05 08:01:21,854 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:01:21,854 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991655783] [2021-06-05 08:01:21,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:01:21,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:01:22,107 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:22,107 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:01:22,107 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991655783] [2021-06-05 08:01:22,107 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991655783] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:22,107 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [494617351] [2021-06-05 08:01:22,108 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 233 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 233 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:01:22,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:01:22,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 28 conjunts are in the unsatisfiable core [2021-06-05 08:01:22,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:01:22,338 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:22,339 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [494617351] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:22,339 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:01:22,339 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 28 [2021-06-05 08:01:22,339 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710507376] [2021-06-05 08:01:22,339 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-06-05 08:01:22,339 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:01:22,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-06-05 08:01:22,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=600, Unknown=0, NotChecked=0, Total=756 [2021-06-05 08:01:22,339 INFO L87 Difference]: Start difference. First operand 3228 states and 8818 transitions. Second operand has 28 states, 28 states have (on average 5.071428571428571) internal successors, (142), 28 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:22,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:01:22,817 INFO L93 Difference]: Finished difference Result 5146 states and 12857 transitions. [2021-06-05 08:01:22,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-06-05 08:01:22,818 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.071428571428571) internal successors, (142), 28 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2021-06-05 08:01:22,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:01:22,823 INFO L225 Difference]: With dead ends: 5146 [2021-06-05 08:01:22,823 INFO L226 Difference]: Without dead ends: 4876 [2021-06-05 08:01:22,823 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 547 ImplicationChecksByTransitivity, 556.5ms TimeCoverageRelationStatistics Valid=769, Invalid=2201, Unknown=0, NotChecked=0, Total=2970 [2021-06-05 08:01:22,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4876 states. [2021-06-05 08:01:22,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4876 to 3303. [2021-06-05 08:01:22,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3303 states, 3302 states have (on average 2.7386432465172623) internal successors, (9043), 3302 states have internal predecessors, (9043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:22,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3303 states to 3303 states and 9043 transitions. [2021-06-05 08:01:22,861 INFO L78 Accepts]: Start accepts. Automaton has 3303 states and 9043 transitions. Word has length 140 [2021-06-05 08:01:22,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:01:22,861 INFO L482 AbstractCegarLoop]: Abstraction has 3303 states and 9043 transitions. [2021-06-05 08:01:22,861 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 5.071428571428571) internal successors, (142), 28 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:22,861 INFO L276 IsEmpty]: Start isEmpty. Operand 3303 states and 9043 transitions. [2021-06-05 08:01:22,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-06-05 08:01:22,864 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:01:22,864 INFO L521 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:01:23,064 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 233 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable237 [2021-06-05 08:01:23,064 INFO L430 AbstractCegarLoop]: === Iteration 239 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:01:23,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:01:23,065 INFO L82 PathProgramCache]: Analyzing trace with hash -1666313968, now seen corresponding path program 230 times [2021-06-05 08:01:23,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:01:23,065 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67156051] [2021-06-05 08:01:23,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:01:23,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:01:23,317 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:23,317 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:01:23,317 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67156051] [2021-06-05 08:01:23,318 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67156051] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:23,318 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [111817872] [2021-06-05 08:01:23,318 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 234 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 234 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:01:23,388 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 08:01:23,388 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:01:23,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 28 conjunts are in the unsatisfiable core [2021-06-05 08:01:23,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:01:23,599 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:23,599 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [111817872] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:23,599 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:01:23,600 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 29 [2021-06-05 08:01:23,600 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869619522] [2021-06-05 08:01:23,600 INFO L462 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-06-05 08:01:23,600 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:01:23,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-06-05 08:01:23,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=662, Unknown=0, NotChecked=0, Total=812 [2021-06-05 08:01:23,600 INFO L87 Difference]: Start difference. First operand 3303 states and 9043 transitions. Second operand has 29 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 29 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:24,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:01:24,142 INFO L93 Difference]: Finished difference Result 5171 states and 12982 transitions. [2021-06-05 08:01:24,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-06-05 08:01:24,143 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 29 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2021-06-05 08:01:24,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:01:24,148 INFO L225 Difference]: With dead ends: 5171 [2021-06-05 08:01:24,148 INFO L226 Difference]: Without dead ends: 4901 [2021-06-05 08:01:24,148 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 635 ImplicationChecksByTransitivity, 636.2ms TimeCoverageRelationStatistics Valid=850, Invalid=2572, Unknown=0, NotChecked=0, Total=3422 [2021-06-05 08:01:24,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4901 states. [2021-06-05 08:01:24,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4901 to 3378. [2021-06-05 08:01:24,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3378 states, 3377 states have (on average 2.744447734675748) internal successors, (9268), 3377 states have internal predecessors, (9268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:24,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3378 states to 3378 states and 9268 transitions. [2021-06-05 08:01:24,185 INFO L78 Accepts]: Start accepts. Automaton has 3378 states and 9268 transitions. Word has length 140 [2021-06-05 08:01:24,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:01:24,185 INFO L482 AbstractCegarLoop]: Abstraction has 3378 states and 9268 transitions. [2021-06-05 08:01:24,185 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 29 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:24,185 INFO L276 IsEmpty]: Start isEmpty. Operand 3378 states and 9268 transitions. [2021-06-05 08:01:24,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-06-05 08:01:24,187 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:01:24,188 INFO L521 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:01:24,388 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable238,234 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:01:24,388 INFO L430 AbstractCegarLoop]: === Iteration 240 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:01:24,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:01:24,388 INFO L82 PathProgramCache]: Analyzing trace with hash 351421310, now seen corresponding path program 231 times [2021-06-05 08:01:24,389 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:01:24,389 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628694986] [2021-06-05 08:01:24,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:01:24,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:01:24,698 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:24,699 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:01:24,699 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628694986] [2021-06-05 08:01:24,699 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628694986] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:24,699 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1145608358] [2021-06-05 08:01:24,699 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 235 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 235 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:01:24,792 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2021-06-05 08:01:24,792 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:01:24,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 28 conjunts are in the unsatisfiable core [2021-06-05 08:01:24,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:01:24,969 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:24,969 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1145608358] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:24,969 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:01:24,969 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 28 [2021-06-05 08:01:24,969 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234791790] [2021-06-05 08:01:24,969 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-06-05 08:01:24,969 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:01:24,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-06-05 08:01:24,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=615, Unknown=0, NotChecked=0, Total=756 [2021-06-05 08:01:24,970 INFO L87 Difference]: Start difference. First operand 3378 states and 9268 transitions. Second operand has 28 states, 28 states have (on average 5.071428571428571) internal successors, (142), 28 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:25,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:01:25,467 INFO L93 Difference]: Finished difference Result 5196 states and 13107 transitions. [2021-06-05 08:01:25,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-05 08:01:25,468 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.071428571428571) internal successors, (142), 28 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2021-06-05 08:01:25,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:01:25,473 INFO L225 Difference]: With dead ends: 5196 [2021-06-05 08:01:25,473 INFO L226 Difference]: Without dead ends: 4926 [2021-06-05 08:01:25,473 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 624 ImplicationChecksByTransitivity, 635.4ms TimeCoverageRelationStatistics Valid=787, Invalid=2405, Unknown=0, NotChecked=0, Total=3192 [2021-06-05 08:01:25,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4926 states. [2021-06-05 08:01:25,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4926 to 3453. [2021-06-05 08:01:25,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3453 states, 3452 states have (on average 2.75) internal successors, (9493), 3452 states have internal predecessors, (9493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:25,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3453 states to 3453 states and 9493 transitions. [2021-06-05 08:01:25,514 INFO L78 Accepts]: Start accepts. Automaton has 3453 states and 9493 transitions. Word has length 140 [2021-06-05 08:01:25,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:01:25,514 INFO L482 AbstractCegarLoop]: Abstraction has 3453 states and 9493 transitions. [2021-06-05 08:01:25,514 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 5.071428571428571) internal successors, (142), 28 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:25,514 INFO L276 IsEmpty]: Start isEmpty. Operand 3453 states and 9493 transitions. [2021-06-05 08:01:25,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-06-05 08:01:25,517 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:01:25,517 INFO L521 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:01:25,718 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 235 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable239 [2021-06-05 08:01:25,718 INFO L430 AbstractCegarLoop]: === Iteration 241 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:01:25,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:01:25,718 INFO L82 PathProgramCache]: Analyzing trace with hash -547102130, now seen corresponding path program 232 times [2021-06-05 08:01:25,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:01:25,718 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115376351] [2021-06-05 08:01:25,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:01:25,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:01:25,959 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:25,959 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:01:25,959 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115376351] [2021-06-05 08:01:25,959 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115376351] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:25,959 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [162437514] [2021-06-05 08:01:25,959 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 236 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 236 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:01:26,019 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 08:01:26,019 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:01:26,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 28 conjunts are in the unsatisfiable core [2021-06-05 08:01:26,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:01:26,229 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:26,229 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [162437514] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:26,229 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:01:26,229 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 29 [2021-06-05 08:01:26,229 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306776623] [2021-06-05 08:01:26,230 INFO L462 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-06-05 08:01:26,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:01:26,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-06-05 08:01:26,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=676, Unknown=0, NotChecked=0, Total=812 [2021-06-05 08:01:26,230 INFO L87 Difference]: Start difference. First operand 3453 states and 9493 transitions. Second operand has 29 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 29 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:26,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:01:26,842 INFO L93 Difference]: Finished difference Result 5221 states and 13232 transitions. [2021-06-05 08:01:26,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-05 08:01:26,842 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 29 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2021-06-05 08:01:26,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:01:26,847 INFO L225 Difference]: With dead ends: 5221 [2021-06-05 08:01:26,847 INFO L226 Difference]: Without dead ends: 4951 [2021-06-05 08:01:26,847 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 719 ImplicationChecksByTransitivity, 679.9ms TimeCoverageRelationStatistics Valid=876, Invalid=2784, Unknown=0, NotChecked=0, Total=3660 [2021-06-05 08:01:26,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4951 states. [2021-06-05 08:01:26,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4951 to 3528. [2021-06-05 08:01:26,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3528 states, 3527 states have (on average 2.755316132690672) internal successors, (9718), 3527 states have internal predecessors, (9718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:26,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3528 states to 3528 states and 9718 transitions. [2021-06-05 08:01:26,887 INFO L78 Accepts]: Start accepts. Automaton has 3528 states and 9718 transitions. Word has length 140 [2021-06-05 08:01:26,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:01:26,887 INFO L482 AbstractCegarLoop]: Abstraction has 3528 states and 9718 transitions. [2021-06-05 08:01:26,887 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 29 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:26,887 INFO L276 IsEmpty]: Start isEmpty. Operand 3528 states and 9718 transitions. [2021-06-05 08:01:26,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-06-05 08:01:26,890 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:01:26,890 INFO L521 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:01:27,090 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable240,236 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:01:27,091 INFO L430 AbstractCegarLoop]: === Iteration 242 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:01:27,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:01:27,091 INFO L82 PathProgramCache]: Analyzing trace with hash 2132911676, now seen corresponding path program 233 times [2021-06-05 08:01:27,091 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:01:27,091 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199068286] [2021-06-05 08:01:27,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:01:27,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:01:27,312 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:27,313 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:01:27,313 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199068286] [2021-06-05 08:01:27,313 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199068286] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:27,313 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1354687095] [2021-06-05 08:01:27,313 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 237 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 237 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:01:27,374 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2021-06-05 08:01:27,375 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:01:27,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 28 conjunts are in the unsatisfiable core [2021-06-05 08:01:27,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:01:27,545 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:27,545 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1354687095] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:27,545 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:01:27,545 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 28 [2021-06-05 08:01:27,545 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473965283] [2021-06-05 08:01:27,545 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-06-05 08:01:27,545 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:01:27,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-06-05 08:01:27,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=626, Unknown=0, NotChecked=0, Total=756 [2021-06-05 08:01:27,546 INFO L87 Difference]: Start difference. First operand 3528 states and 9718 transitions. Second operand has 28 states, 28 states have (on average 5.071428571428571) internal successors, (142), 28 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:28,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:01:28,083 INFO L93 Difference]: Finished difference Result 5246 states and 13357 transitions. [2021-06-05 08:01:28,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-06-05 08:01:28,083 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.071428571428571) internal successors, (142), 28 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2021-06-05 08:01:28,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:01:28,089 INFO L225 Difference]: With dead ends: 5246 [2021-06-05 08:01:28,089 INFO L226 Difference]: Without dead ends: 4976 [2021-06-05 08:01:28,089 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 705 ImplicationChecksByTransitivity, 586.4ms TimeCoverageRelationStatistics Valid=821, Invalid=2601, Unknown=0, NotChecked=0, Total=3422 [2021-06-05 08:01:28,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4976 states. [2021-06-05 08:01:28,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4976 to 3603. [2021-06-05 08:01:28,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3603 states, 3602 states have (on average 2.7604108828428653) internal successors, (9943), 3602 states have internal predecessors, (9943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:28,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3603 states to 3603 states and 9943 transitions. [2021-06-05 08:01:28,134 INFO L78 Accepts]: Start accepts. Automaton has 3603 states and 9943 transitions. Word has length 140 [2021-06-05 08:01:28,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:01:28,134 INFO L482 AbstractCegarLoop]: Abstraction has 3603 states and 9943 transitions. [2021-06-05 08:01:28,135 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 5.071428571428571) internal successors, (142), 28 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:28,135 INFO L276 IsEmpty]: Start isEmpty. Operand 3603 states and 9943 transitions. [2021-06-05 08:01:28,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-06-05 08:01:28,138 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:01:28,138 INFO L521 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:01:28,338 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable241,237 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:01:28,338 INFO L430 AbstractCegarLoop]: === Iteration 243 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:01:28,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:01:28,339 INFO L82 PathProgramCache]: Analyzing trace with hash 1752467724, now seen corresponding path program 234 times [2021-06-05 08:01:28,339 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:01:28,339 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133931050] [2021-06-05 08:01:28,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:01:28,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:01:28,590 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:28,590 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:01:28,590 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133931050] [2021-06-05 08:01:28,590 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133931050] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:28,591 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1482501031] [2021-06-05 08:01:28,591 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 238 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 238 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:01:28,659 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2021-06-05 08:01:28,659 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:01:28,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 28 conjunts are in the unsatisfiable core [2021-06-05 08:01:28,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:01:28,843 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:28,843 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1482501031] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:28,843 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:01:28,843 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 29 [2021-06-05 08:01:28,843 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66440112] [2021-06-05 08:01:28,843 INFO L462 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-06-05 08:01:28,844 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:01:28,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-06-05 08:01:28,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=686, Unknown=0, NotChecked=0, Total=812 [2021-06-05 08:01:28,844 INFO L87 Difference]: Start difference. First operand 3603 states and 9943 transitions. Second operand has 29 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 29 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:29,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:01:29,537 INFO L93 Difference]: Finished difference Result 5271 states and 13482 transitions. [2021-06-05 08:01:29,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-06-05 08:01:29,537 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 29 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2021-06-05 08:01:29,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:01:29,543 INFO L225 Difference]: With dead ends: 5271 [2021-06-05 08:01:29,543 INFO L226 Difference]: Without dead ends: 5001 [2021-06-05 08:01:29,543 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 807 ImplicationChecksByTransitivity, 737.5ms TimeCoverageRelationStatistics Valid=918, Invalid=2988, Unknown=0, NotChecked=0, Total=3906 [2021-06-05 08:01:29,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5001 states. [2021-06-05 08:01:29,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5001 to 3678. [2021-06-05 08:01:29,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3678 states, 3677 states have (on average 2.7652977971172152) internal successors, (10168), 3677 states have internal predecessors, (10168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:29,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3678 states to 3678 states and 10168 transitions. [2021-06-05 08:01:29,586 INFO L78 Accepts]: Start accepts. Automaton has 3678 states and 10168 transitions. Word has length 140 [2021-06-05 08:01:29,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:01:29,586 INFO L482 AbstractCegarLoop]: Abstraction has 3678 states and 10168 transitions. [2021-06-05 08:01:29,586 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 29 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:29,586 INFO L276 IsEmpty]: Start isEmpty. Operand 3678 states and 10168 transitions. [2021-06-05 08:01:29,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-06-05 08:01:29,589 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:01:29,589 INFO L521 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:01:29,789 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable242,238 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:01:29,789 INFO L430 AbstractCegarLoop]: === Iteration 244 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:01:29,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:01:29,790 INFO L82 PathProgramCache]: Analyzing trace with hash -1918124422, now seen corresponding path program 235 times [2021-06-05 08:01:29,790 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:01:29,790 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580908147] [2021-06-05 08:01:29,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:01:29,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:01:30,008 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:30,009 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:01:30,009 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580908147] [2021-06-05 08:01:30,009 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580908147] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:30,009 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [170989761] [2021-06-05 08:01:30,009 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 239 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 239 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:01:30,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:01:30,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 28 conjunts are in the unsatisfiable core [2021-06-05 08:01:30,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:01:30,234 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:30,234 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [170989761] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:30,234 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:01:30,234 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 28 [2021-06-05 08:01:30,234 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802335952] [2021-06-05 08:01:30,235 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-06-05 08:01:30,235 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:01:30,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-06-05 08:01:30,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=633, Unknown=0, NotChecked=0, Total=756 [2021-06-05 08:01:30,235 INFO L87 Difference]: Start difference. First operand 3678 states and 10168 transitions. Second operand has 28 states, 28 states have (on average 5.071428571428571) internal successors, (142), 28 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:30,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:01:30,800 INFO L93 Difference]: Finished difference Result 5296 states and 13607 transitions. [2021-06-05 08:01:30,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-05 08:01:30,800 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.071428571428571) internal successors, (142), 28 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2021-06-05 08:01:30,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:01:30,823 INFO L225 Difference]: With dead ends: 5296 [2021-06-05 08:01:30,823 INFO L226 Difference]: Without dead ends: 5026 [2021-06-05 08:01:30,823 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 790 ImplicationChecksByTransitivity, 607.5ms TimeCoverageRelationStatistics Valid=871, Invalid=2789, Unknown=0, NotChecked=0, Total=3660 [2021-06-05 08:01:30,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5026 states. [2021-06-05 08:01:30,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5026 to 3753. [2021-06-05 08:01:30,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3753 states, 3752 states have (on average 2.76998933901919) internal successors, (10393), 3752 states have internal predecessors, (10393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:30,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3753 states to 3753 states and 10393 transitions. [2021-06-05 08:01:30,866 INFO L78 Accepts]: Start accepts. Automaton has 3753 states and 10393 transitions. Word has length 140 [2021-06-05 08:01:30,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:01:30,866 INFO L482 AbstractCegarLoop]: Abstraction has 3753 states and 10393 transitions. [2021-06-05 08:01:30,866 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 5.071428571428571) internal successors, (142), 28 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:30,866 INFO L276 IsEmpty]: Start isEmpty. Operand 3753 states and 10393 transitions. [2021-06-05 08:01:30,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-06-05 08:01:30,869 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:01:30,869 INFO L521 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:01:31,069 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 239 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable243 [2021-06-05 08:01:31,070 INFO L430 AbstractCegarLoop]: === Iteration 245 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:01:31,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:01:31,070 INFO L82 PathProgramCache]: Analyzing trace with hash -1109072566, now seen corresponding path program 236 times [2021-06-05 08:01:31,070 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:01:31,070 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157900178] [2021-06-05 08:01:31,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:01:31,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:01:31,292 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:31,292 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:01:31,292 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157900178] [2021-06-05 08:01:31,292 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157900178] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:31,293 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [62644813] [2021-06-05 08:01:31,293 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 240 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 240 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:01:31,353 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 08:01:31,353 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:01:31,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 28 conjunts are in the unsatisfiable core [2021-06-05 08:01:31,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:01:31,535 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:31,536 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [62644813] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:31,536 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:01:31,536 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 29 [2021-06-05 08:01:31,536 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994484538] [2021-06-05 08:01:31,536 INFO L462 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-06-05 08:01:31,536 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:01:31,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-06-05 08:01:31,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=692, Unknown=0, NotChecked=0, Total=812 [2021-06-05 08:01:31,536 INFO L87 Difference]: Start difference. First operand 3753 states and 10393 transitions. Second operand has 29 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 29 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:32,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:01:32,250 INFO L93 Difference]: Finished difference Result 5321 states and 13732 transitions. [2021-06-05 08:01:32,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-05 08:01:32,250 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 29 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2021-06-05 08:01:32,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:01:32,256 INFO L225 Difference]: With dead ends: 5321 [2021-06-05 08:01:32,256 INFO L226 Difference]: Without dead ends: 5051 [2021-06-05 08:01:32,256 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 899 ImplicationChecksByTransitivity, 740.8ms TimeCoverageRelationStatistics Valid=976, Invalid=3184, Unknown=0, NotChecked=0, Total=4160 [2021-06-05 08:01:32,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5051 states. [2021-06-05 08:01:32,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5051 to 3828. [2021-06-05 08:01:32,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3828 states, 3827 states have (on average 2.7744969950352756) internal successors, (10618), 3827 states have internal predecessors, (10618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:32,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3828 states to 3828 states and 10618 transitions. [2021-06-05 08:01:32,306 INFO L78 Accepts]: Start accepts. Automaton has 3828 states and 10618 transitions. Word has length 140 [2021-06-05 08:01:32,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:01:32,306 INFO L482 AbstractCegarLoop]: Abstraction has 3828 states and 10618 transitions. [2021-06-05 08:01:32,307 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 29 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:32,307 INFO L276 IsEmpty]: Start isEmpty. Operand 3828 states and 10618 transitions. [2021-06-05 08:01:32,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-06-05 08:01:32,310 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:01:32,310 INFO L521 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:01:32,510 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 240 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable244 [2021-06-05 08:01:32,510 INFO L430 AbstractCegarLoop]: === Iteration 246 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:01:32,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:01:32,511 INFO L82 PathProgramCache]: Analyzing trace with hash 1793944632, now seen corresponding path program 237 times [2021-06-05 08:01:32,511 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:01:32,511 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329206924] [2021-06-05 08:01:32,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:01:32,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:01:32,760 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:32,760 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:01:32,761 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329206924] [2021-06-05 08:01:32,761 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329206924] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:32,761 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1520006994] [2021-06-05 08:01:32,761 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 241 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 241 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:01:32,836 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2021-06-05 08:01:32,836 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:01:32,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 28 conjunts are in the unsatisfiable core [2021-06-05 08:01:32,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:01:33,005 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:33,005 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1520006994] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:33,005 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:01:33,006 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 28 [2021-06-05 08:01:33,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848363392] [2021-06-05 08:01:33,006 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-06-05 08:01:33,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:01:33,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-06-05 08:01:33,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=636, Unknown=0, NotChecked=0, Total=756 [2021-06-05 08:01:33,006 INFO L87 Difference]: Start difference. First operand 3828 states and 10618 transitions. Second operand has 28 states, 28 states have (on average 5.071428571428571) internal successors, (142), 28 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:33,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:01:33,662 INFO L93 Difference]: Finished difference Result 5346 states and 13857 transitions. [2021-06-05 08:01:33,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-05 08:01:33,663 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.071428571428571) internal successors, (142), 28 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2021-06-05 08:01:33,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:01:33,667 INFO L225 Difference]: With dead ends: 5346 [2021-06-05 08:01:33,667 INFO L226 Difference]: Without dead ends: 5076 [2021-06-05 08:01:33,668 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 879 ImplicationChecksByTransitivity, 670.6ms TimeCoverageRelationStatistics Valid=937, Invalid=2969, Unknown=0, NotChecked=0, Total=3906 [2021-06-05 08:01:33,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5076 states. [2021-06-05 08:01:33,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5076 to 3903. [2021-06-05 08:01:33,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3903 states, 3902 states have (on average 2.7788313685289596) internal successors, (10843), 3902 states have internal predecessors, (10843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:33,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3903 states to 3903 states and 10843 transitions. [2021-06-05 08:01:33,719 INFO L78 Accepts]: Start accepts. Automaton has 3903 states and 10843 transitions. Word has length 140 [2021-06-05 08:01:33,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:01:33,720 INFO L482 AbstractCegarLoop]: Abstraction has 3903 states and 10843 transitions. [2021-06-05 08:01:33,720 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 5.071428571428571) internal successors, (142), 28 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:33,720 INFO L276 IsEmpty]: Start isEmpty. Operand 3903 states and 10843 transitions. [2021-06-05 08:01:33,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-06-05 08:01:33,723 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:01:33,723 INFO L521 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:01:33,923 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 241 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable245 [2021-06-05 08:01:33,923 INFO L430 AbstractCegarLoop]: === Iteration 247 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:01:33,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:01:33,924 INFO L82 PathProgramCache]: Analyzing trace with hash 1548867336, now seen corresponding path program 238 times [2021-06-05 08:01:33,924 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:01:33,924 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387653389] [2021-06-05 08:01:33,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:01:33,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:01:34,174 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:34,174 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:01:34,174 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387653389] [2021-06-05 08:01:34,174 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387653389] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:34,174 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1826681160] [2021-06-05 08:01:34,175 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 242 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 242 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:01:34,232 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 08:01:34,232 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:01:34,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 28 conjunts are in the unsatisfiable core [2021-06-05 08:01:34,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:01:34,437 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:34,438 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1826681160] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:34,438 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:01:34,438 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 29 [2021-06-05 08:01:34,438 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026385397] [2021-06-05 08:01:34,438 INFO L462 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-06-05 08:01:34,438 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:01:34,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-06-05 08:01:34,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=694, Unknown=0, NotChecked=0, Total=812 [2021-06-05 08:01:34,438 INFO L87 Difference]: Start difference. First operand 3903 states and 10843 transitions. Second operand has 29 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 29 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:35,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:01:35,208 INFO L93 Difference]: Finished difference Result 5371 states and 13982 transitions. [2021-06-05 08:01:35,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-06-05 08:01:35,208 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 29 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2021-06-05 08:01:35,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:01:35,213 INFO L225 Difference]: With dead ends: 5371 [2021-06-05 08:01:35,213 INFO L226 Difference]: Without dead ends: 5101 [2021-06-05 08:01:35,214 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 995 ImplicationChecksByTransitivity, 805.0ms TimeCoverageRelationStatistics Valid=1050, Invalid=3372, Unknown=0, NotChecked=0, Total=4422 [2021-06-05 08:01:35,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5101 states. [2021-06-05 08:01:35,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5101 to 3978. [2021-06-05 08:01:35,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3978 states, 3977 states have (on average 2.783002263012321) internal successors, (11068), 3977 states have internal predecessors, (11068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:35,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3978 states to 3978 states and 11068 transitions. [2021-06-05 08:01:35,265 INFO L78 Accepts]: Start accepts. Automaton has 3978 states and 11068 transitions. Word has length 140 [2021-06-05 08:01:35,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:01:35,265 INFO L482 AbstractCegarLoop]: Abstraction has 3978 states and 11068 transitions. [2021-06-05 08:01:35,265 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 29 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:35,265 INFO L276 IsEmpty]: Start isEmpty. Operand 3978 states and 11068 transitions. [2021-06-05 08:01:35,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-06-05 08:01:35,269 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:01:35,269 INFO L521 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:01:35,469 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 242 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable246 [2021-06-05 08:01:35,469 INFO L430 AbstractCegarLoop]: === Iteration 248 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:01:35,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:01:35,470 INFO L82 PathProgramCache]: Analyzing trace with hash 1172017014, now seen corresponding path program 239 times [2021-06-05 08:01:35,470 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:01:35,470 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670097625] [2021-06-05 08:01:35,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:01:35,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:01:35,674 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:35,675 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:01:35,675 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670097625] [2021-06-05 08:01:35,675 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670097625] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:35,675 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [582539387] [2021-06-05 08:01:35,675 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 243 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 243 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:01:35,734 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2021-06-05 08:01:35,734 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:01:35,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 28 conjunts are in the unsatisfiable core [2021-06-05 08:01:35,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:01:35,922 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:35,923 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [582539387] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:35,923 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:01:35,923 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 28 [2021-06-05 08:01:35,923 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012111809] [2021-06-05 08:01:35,923 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-06-05 08:01:35,923 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:01:35,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-06-05 08:01:35,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=635, Unknown=0, NotChecked=0, Total=756 [2021-06-05 08:01:35,923 INFO L87 Difference]: Start difference. First operand 3978 states and 11068 transitions. Second operand has 28 states, 28 states have (on average 5.071428571428571) internal successors, (142), 28 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:36,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:01:36,591 INFO L93 Difference]: Finished difference Result 5396 states and 14107 transitions. [2021-06-05 08:01:36,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-05 08:01:36,592 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.071428571428571) internal successors, (142), 28 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2021-06-05 08:01:36,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:01:36,597 INFO L225 Difference]: With dead ends: 5396 [2021-06-05 08:01:36,597 INFO L226 Difference]: Without dead ends: 5126 [2021-06-05 08:01:36,597 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 972 ImplicationChecksByTransitivity, 659.7ms TimeCoverageRelationStatistics Valid=1019, Invalid=3141, Unknown=0, NotChecked=0, Total=4160 [2021-06-05 08:01:36,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5126 states. [2021-06-05 08:01:36,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5126 to 4053. [2021-06-05 08:01:36,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4053 states, 4052 states have (on average 2.7870187561697928) internal successors, (11293), 4052 states have internal predecessors, (11293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:36,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4053 states to 4053 states and 11293 transitions. [2021-06-05 08:01:36,645 INFO L78 Accepts]: Start accepts. Automaton has 4053 states and 11293 transitions. Word has length 140 [2021-06-05 08:01:36,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:01:36,645 INFO L482 AbstractCegarLoop]: Abstraction has 4053 states and 11293 transitions. [2021-06-05 08:01:36,645 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 5.071428571428571) internal successors, (142), 28 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:36,645 INFO L276 IsEmpty]: Start isEmpty. Operand 4053 states and 11293 transitions. [2021-06-05 08:01:36,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-06-05 08:01:36,648 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:01:36,648 INFO L521 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:01:36,848 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 243 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable247 [2021-06-05 08:01:36,849 INFO L430 AbstractCegarLoop]: === Iteration 249 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:01:36,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:01:36,849 INFO L82 PathProgramCache]: Analyzing trace with hash -1796194746, now seen corresponding path program 240 times [2021-06-05 08:01:36,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:01:36,849 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332262514] [2021-06-05 08:01:36,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:01:36,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:01:37,057 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:37,057 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:01:37,057 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332262514] [2021-06-05 08:01:37,057 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332262514] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:37,057 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [971376932] [2021-06-05 08:01:37,058 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 244 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 244 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:01:37,131 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2021-06-05 08:01:37,131 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:01:37,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 28 conjunts are in the unsatisfiable core [2021-06-05 08:01:37,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:01:37,314 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:37,314 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [971376932] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:37,314 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:01:37,314 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 29 [2021-06-05 08:01:37,314 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21069977] [2021-06-05 08:01:37,314 INFO L462 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-06-05 08:01:37,314 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:01:37,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-06-05 08:01:37,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=692, Unknown=0, NotChecked=0, Total=812 [2021-06-05 08:01:37,315 INFO L87 Difference]: Start difference. First operand 4053 states and 11293 transitions. Second operand has 29 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 29 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:38,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:01:38,314 INFO L93 Difference]: Finished difference Result 5421 states and 14232 transitions. [2021-06-05 08:01:38,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-06-05 08:01:38,314 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 29 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2021-06-05 08:01:38,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:01:38,320 INFO L225 Difference]: With dead ends: 5421 [2021-06-05 08:01:38,320 INFO L226 Difference]: Without dead ends: 5151 [2021-06-05 08:01:38,321 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1095 ImplicationChecksByTransitivity, 950.0ms TimeCoverageRelationStatistics Valid=1140, Invalid=3552, Unknown=0, NotChecked=0, Total=4692 [2021-06-05 08:01:38,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5151 states. [2021-06-05 08:01:38,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5151 to 4128. [2021-06-05 08:01:38,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4128 states, 4127 states have (on average 2.790889265810516) internal successors, (11518), 4127 states have internal predecessors, (11518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:38,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4128 states to 4128 states and 11518 transitions. [2021-06-05 08:01:38,386 INFO L78 Accepts]: Start accepts. Automaton has 4128 states and 11518 transitions. Word has length 140 [2021-06-05 08:01:38,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:01:38,386 INFO L482 AbstractCegarLoop]: Abstraction has 4128 states and 11518 transitions. [2021-06-05 08:01:38,387 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 29 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:38,387 INFO L276 IsEmpty]: Start isEmpty. Operand 4128 states and 11518 transitions. [2021-06-05 08:01:38,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-06-05 08:01:38,390 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:01:38,390 INFO L521 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:01:38,590 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable248,244 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:01:38,591 INFO L430 AbstractCegarLoop]: === Iteration 250 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:01:38,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:01:38,591 INFO L82 PathProgramCache]: Analyzing trace with hash -1341978572, now seen corresponding path program 241 times [2021-06-05 08:01:38,591 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:01:38,591 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020068222] [2021-06-05 08:01:38,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:01:38,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:01:38,792 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:38,792 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:01:38,792 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020068222] [2021-06-05 08:01:38,792 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020068222] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:38,792 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1439025710] [2021-06-05 08:01:38,792 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 245 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 245 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:01:38,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:01:38,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 28 conjunts are in the unsatisfiable core [2021-06-05 08:01:38,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:01:39,036 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:39,037 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1439025710] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:39,037 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:01:39,037 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 28 [2021-06-05 08:01:39,037 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830767911] [2021-06-05 08:01:39,037 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-06-05 08:01:39,037 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:01:39,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-06-05 08:01:39,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=630, Unknown=0, NotChecked=0, Total=756 [2021-06-05 08:01:39,038 INFO L87 Difference]: Start difference. First operand 4128 states and 11518 transitions. Second operand has 28 states, 28 states have (on average 5.071428571428571) internal successors, (142), 28 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:39,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:01:39,860 INFO L93 Difference]: Finished difference Result 5446 states and 14357 transitions. [2021-06-05 08:01:39,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-05 08:01:39,860 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.071428571428571) internal successors, (142), 28 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2021-06-05 08:01:39,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:01:39,866 INFO L225 Difference]: With dead ends: 5446 [2021-06-05 08:01:39,866 INFO L226 Difference]: Without dead ends: 5176 [2021-06-05 08:01:39,867 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1069 ImplicationChecksByTransitivity, 734.7ms TimeCoverageRelationStatistics Valid=1117, Invalid=3305, Unknown=0, NotChecked=0, Total=4422 [2021-06-05 08:01:39,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5176 states. [2021-06-05 08:01:39,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5176 to 4203. [2021-06-05 08:01:39,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4203 states, 4202 states have (on average 2.7946216087577342) internal successors, (11743), 4202 states have internal predecessors, (11743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:39,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4203 states to 4203 states and 11743 transitions. [2021-06-05 08:01:39,916 INFO L78 Accepts]: Start accepts. Automaton has 4203 states and 11743 transitions. Word has length 140 [2021-06-05 08:01:39,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:01:39,917 INFO L482 AbstractCegarLoop]: Abstraction has 4203 states and 11743 transitions. [2021-06-05 08:01:39,917 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 5.071428571428571) internal successors, (142), 28 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:39,917 INFO L276 IsEmpty]: Start isEmpty. Operand 4203 states and 11743 transitions. [2021-06-05 08:01:39,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-06-05 08:01:39,920 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:01:39,920 INFO L521 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:01:40,124 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 245 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable249 [2021-06-05 08:01:40,125 INFO L430 AbstractCegarLoop]: === Iteration 251 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:01:40,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:01:40,125 INFO L82 PathProgramCache]: Analyzing trace with hash -343082236, now seen corresponding path program 242 times [2021-06-05 08:01:40,125 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:01:40,125 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780789841] [2021-06-05 08:01:40,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:01:40,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:01:40,326 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:40,326 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:01:40,326 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780789841] [2021-06-05 08:01:40,326 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780789841] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:40,326 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [579214150] [2021-06-05 08:01:40,326 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 246 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 246 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:01:40,384 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 08:01:40,384 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:01:40,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 28 conjunts are in the unsatisfiable core [2021-06-05 08:01:40,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:01:40,558 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:40,558 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [579214150] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:40,558 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:01:40,558 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 29 [2021-06-05 08:01:40,558 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939488166] [2021-06-05 08:01:40,559 INFO L462 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-06-05 08:01:40,559 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:01:40,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-06-05 08:01:40,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=686, Unknown=0, NotChecked=0, Total=812 [2021-06-05 08:01:40,559 INFO L87 Difference]: Start difference. First operand 4203 states and 11743 transitions. Second operand has 29 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 29 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:41,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:01:41,472 INFO L93 Difference]: Finished difference Result 5471 states and 14482 transitions. [2021-06-05 08:01:41,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-06-05 08:01:41,472 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 29 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2021-06-05 08:01:41,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:01:41,477 INFO L225 Difference]: With dead ends: 5471 [2021-06-05 08:01:41,477 INFO L226 Difference]: Without dead ends: 5201 [2021-06-05 08:01:41,478 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1199 ImplicationChecksByTransitivity, 866.9ms TimeCoverageRelationStatistics Valid=1246, Invalid=3724, Unknown=0, NotChecked=0, Total=4970 [2021-06-05 08:01:41,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5201 states. [2021-06-05 08:01:41,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5201 to 4278. [2021-06-05 08:01:41,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4278 states, 4277 states have (on average 2.7982230535422024) internal successors, (11968), 4277 states have internal predecessors, (11968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:41,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4278 states to 4278 states and 11968 transitions. [2021-06-05 08:01:41,526 INFO L78 Accepts]: Start accepts. Automaton has 4278 states and 11968 transitions. Word has length 140 [2021-06-05 08:01:41,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:01:41,526 INFO L482 AbstractCegarLoop]: Abstraction has 4278 states and 11968 transitions. [2021-06-05 08:01:41,527 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 29 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:41,527 INFO L276 IsEmpty]: Start isEmpty. Operand 4278 states and 11968 transitions. [2021-06-05 08:01:41,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-06-05 08:01:41,530 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:01:41,530 INFO L521 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:01:41,730 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable250,246 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:01:41,730 INFO L430 AbstractCegarLoop]: === Iteration 252 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:01:41,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:01:41,730 INFO L82 PathProgramCache]: Analyzing trace with hash 2072557170, now seen corresponding path program 243 times [2021-06-05 08:01:41,731 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:01:41,731 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731890182] [2021-06-05 08:01:41,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:01:41,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:01:41,936 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:41,937 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:01:41,937 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731890182] [2021-06-05 08:01:41,937 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731890182] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:41,937 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1839355427] [2021-06-05 08:01:41,937 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 247 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 247 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:01:42,005 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2021-06-05 08:01:42,006 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:01:42,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 28 conjunts are in the unsatisfiable core [2021-06-05 08:01:42,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:01:42,164 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:42,164 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1839355427] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:42,164 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:01:42,164 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 28 [2021-06-05 08:01:42,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806335635] [2021-06-05 08:01:42,164 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-06-05 08:01:42,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:01:42,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-06-05 08:01:42,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=621, Unknown=0, NotChecked=0, Total=756 [2021-06-05 08:01:42,165 INFO L87 Difference]: Start difference. First operand 4278 states and 11968 transitions. Second operand has 28 states, 28 states have (on average 5.071428571428571) internal successors, (142), 28 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:42,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:01:42,903 INFO L93 Difference]: Finished difference Result 5496 states and 14607 transitions. [2021-06-05 08:01:42,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-06-05 08:01:42,904 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.071428571428571) internal successors, (142), 28 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2021-06-05 08:01:42,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:01:42,909 INFO L225 Difference]: With dead ends: 5496 [2021-06-05 08:01:42,909 INFO L226 Difference]: Without dead ends: 5226 [2021-06-05 08:01:42,910 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1170 ImplicationChecksByTransitivity, 716.1ms TimeCoverageRelationStatistics Valid=1231, Invalid=3461, Unknown=0, NotChecked=0, Total=4692 [2021-06-05 08:01:42,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5226 states. [2021-06-05 08:01:42,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5226 to 4353. [2021-06-05 08:01:42,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4353 states, 4352 states have (on average 2.801700367647059) internal successors, (12193), 4352 states have internal predecessors, (12193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:42,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4353 states to 4353 states and 12193 transitions. [2021-06-05 08:01:42,958 INFO L78 Accepts]: Start accepts. Automaton has 4353 states and 12193 transitions. Word has length 140 [2021-06-05 08:01:42,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:01:42,959 INFO L482 AbstractCegarLoop]: Abstraction has 4353 states and 12193 transitions. [2021-06-05 08:01:42,959 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 5.071428571428571) internal successors, (142), 28 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:42,959 INFO L276 IsEmpty]: Start isEmpty. Operand 4353 states and 12193 transitions. [2021-06-05 08:01:42,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-06-05 08:01:42,962 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:01:42,962 INFO L521 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:01:43,162 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable251,247 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:01:43,162 INFO L430 AbstractCegarLoop]: === Iteration 253 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:01:43,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:01:43,163 INFO L82 PathProgramCache]: Analyzing trace with hash -192090814, now seen corresponding path program 244 times [2021-06-05 08:01:43,163 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:01:43,163 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671165769] [2021-06-05 08:01:43,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:01:43,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:01:43,385 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:43,385 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:01:43,385 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671165769] [2021-06-05 08:01:43,385 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671165769] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:43,385 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [803249542] [2021-06-05 08:01:43,385 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 248 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 248 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:01:43,444 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 08:01:43,444 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:01:43,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 28 conjunts are in the unsatisfiable core [2021-06-05 08:01:43,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:01:43,632 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:43,632 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [803249542] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:43,632 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:01:43,632 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 29 [2021-06-05 08:01:43,632 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690948830] [2021-06-05 08:01:43,632 INFO L462 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-06-05 08:01:43,633 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:01:43,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-06-05 08:01:43,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=676, Unknown=0, NotChecked=0, Total=812 [2021-06-05 08:01:43,633 INFO L87 Difference]: Start difference. First operand 4353 states and 12193 transitions. Second operand has 29 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 29 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:44,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:01:44,597 INFO L93 Difference]: Finished difference Result 5521 states and 14732 transitions. [2021-06-05 08:01:44,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-06-05 08:01:44,598 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 29 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2021-06-05 08:01:44,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:01:44,604 INFO L225 Difference]: With dead ends: 5521 [2021-06-05 08:01:44,605 INFO L226 Difference]: Without dead ends: 5251 [2021-06-05 08:01:44,605 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1307 ImplicationChecksByTransitivity, 932.6ms TimeCoverageRelationStatistics Valid=1368, Invalid=3888, Unknown=0, NotChecked=0, Total=5256 [2021-06-05 08:01:44,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5251 states. [2021-06-05 08:01:44,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5251 to 4428. [2021-06-05 08:01:44,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4428 states, 4427 states have (on average 2.805059859950305) internal successors, (12418), 4427 states have internal predecessors, (12418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:44,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4428 states to 4428 states and 12418 transitions. [2021-06-05 08:01:44,661 INFO L78 Accepts]: Start accepts. Automaton has 4428 states and 12418 transitions. Word has length 140 [2021-06-05 08:01:44,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:01:44,661 INFO L482 AbstractCegarLoop]: Abstraction has 4428 states and 12418 transitions. [2021-06-05 08:01:44,661 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 29 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:44,661 INFO L276 IsEmpty]: Start isEmpty. Operand 4428 states and 12418 transitions. [2021-06-05 08:01:44,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-06-05 08:01:44,664 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:01:44,665 INFO L521 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:01:44,865 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable252,248 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:01:44,865 INFO L430 AbstractCegarLoop]: === Iteration 254 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:01:44,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:01:44,865 INFO L82 PathProgramCache]: Analyzing trace with hash 422148656, now seen corresponding path program 245 times [2021-06-05 08:01:44,866 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:01:44,866 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284174807] [2021-06-05 08:01:44,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:01:44,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:01:45,127 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:45,127 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:01:45,127 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284174807] [2021-06-05 08:01:45,127 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284174807] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:45,127 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1515610168] [2021-06-05 08:01:45,127 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 249 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 249 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:01:45,189 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2021-06-05 08:01:45,190 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:01:45,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 28 conjunts are in the unsatisfiable core [2021-06-05 08:01:45,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:01:45,347 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:45,348 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1515610168] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:45,348 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:01:45,348 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 28 [2021-06-05 08:01:45,348 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650853325] [2021-06-05 08:01:45,348 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-06-05 08:01:45,348 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:01:45,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-06-05 08:01:45,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=608, Unknown=0, NotChecked=0, Total=756 [2021-06-05 08:01:45,349 INFO L87 Difference]: Start difference. First operand 4428 states and 12418 transitions. Second operand has 28 states, 28 states have (on average 5.071428571428571) internal successors, (142), 28 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:46,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:01:46,146 INFO L93 Difference]: Finished difference Result 5591 states and 14977 transitions. [2021-06-05 08:01:46,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-06-05 08:01:46,147 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.071428571428571) internal successors, (142), 28 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2021-06-05 08:01:46,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:01:46,152 INFO L225 Difference]: With dead ends: 5591 [2021-06-05 08:01:46,152 INFO L226 Difference]: Without dead ends: 5321 [2021-06-05 08:01:46,153 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1275 ImplicationChecksByTransitivity, 798.4ms TimeCoverageRelationStatistics Valid=1361, Invalid=3609, Unknown=0, NotChecked=0, Total=4970 [2021-06-05 08:01:46,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5321 states. [2021-06-05 08:01:46,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5321 to 4503. [2021-06-05 08:01:46,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4503 states, 4502 states have (on average 2.8116392714349177) internal successors, (12658), 4502 states have internal predecessors, (12658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:46,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4503 states to 4503 states and 12658 transitions. [2021-06-05 08:01:46,210 INFO L78 Accepts]: Start accepts. Automaton has 4503 states and 12658 transitions. Word has length 140 [2021-06-05 08:01:46,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:01:46,210 INFO L482 AbstractCegarLoop]: Abstraction has 4503 states and 12658 transitions. [2021-06-05 08:01:46,210 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 5.071428571428571) internal successors, (142), 28 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:46,210 INFO L276 IsEmpty]: Start isEmpty. Operand 4503 states and 12658 transitions. [2021-06-05 08:01:46,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-06-05 08:01:46,214 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:01:46,214 INFO L521 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:01:46,414 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable253,249 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:01:46,414 INFO L430 AbstractCegarLoop]: === Iteration 255 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:01:46,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:01:46,415 INFO L82 PathProgramCache]: Analyzing trace with hash -1293093632, now seen corresponding path program 246 times [2021-06-05 08:01:46,415 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:01:46,415 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531028788] [2021-06-05 08:01:46,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:01:46,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:01:46,614 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:46,615 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:01:46,615 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531028788] [2021-06-05 08:01:46,615 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531028788] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:46,615 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [566743542] [2021-06-05 08:01:46,615 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 250 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 250 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:01:46,684 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2021-06-05 08:01:46,684 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:01:46,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 28 conjunts are in the unsatisfiable core [2021-06-05 08:01:46,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:01:46,853 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:46,853 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [566743542] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:46,853 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:01:46,853 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 29 [2021-06-05 08:01:46,853 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648537352] [2021-06-05 08:01:46,854 INFO L462 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-06-05 08:01:46,854 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:01:46,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-06-05 08:01:46,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=662, Unknown=0, NotChecked=0, Total=812 [2021-06-05 08:01:46,854 INFO L87 Difference]: Start difference. First operand 4503 states and 12658 transitions. Second operand has 29 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 29 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:47,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:01:47,918 INFO L93 Difference]: Finished difference Result 6169 states and 16603 transitions. [2021-06-05 08:01:47,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-06-05 08:01:47,918 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 29 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2021-06-05 08:01:47,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:01:47,925 INFO L225 Difference]: With dead ends: 6169 [2021-06-05 08:01:47,925 INFO L226 Difference]: Without dead ends: 5546 [2021-06-05 08:01:47,926 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1510 ImplicationChecksByTransitivity, 986.4ms TimeCoverageRelationStatistics Valid=1529, Invalid=4323, Unknown=0, NotChecked=0, Total=5852 [2021-06-05 08:01:47,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5546 states. [2021-06-05 08:01:47,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5546 to 4578. [2021-06-05 08:01:47,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4578 states, 4577 states have (on average 2.815818221542495) internal successors, (12888), 4577 states have internal predecessors, (12888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:47,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4578 states to 4578 states and 12888 transitions. [2021-06-05 08:01:47,982 INFO L78 Accepts]: Start accepts. Automaton has 4578 states and 12888 transitions. Word has length 140 [2021-06-05 08:01:47,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:01:47,983 INFO L482 AbstractCegarLoop]: Abstraction has 4578 states and 12888 transitions. [2021-06-05 08:01:47,983 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 29 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:47,983 INFO L276 IsEmpty]: Start isEmpty. Operand 4578 states and 12888 transitions. [2021-06-05 08:01:47,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-06-05 08:01:47,988 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:01:47,988 INFO L521 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:01:48,189 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 250 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable254 [2021-06-05 08:01:48,189 INFO L430 AbstractCegarLoop]: === Iteration 256 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:01:48,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:01:48,190 INFO L82 PathProgramCache]: Analyzing trace with hash 1969226062, now seen corresponding path program 247 times [2021-06-05 08:01:48,190 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:01:48,190 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446833613] [2021-06-05 08:01:48,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:01:48,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:01:48,424 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:48,424 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:01:48,424 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446833613] [2021-06-05 08:01:48,424 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446833613] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:48,424 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2120305179] [2021-06-05 08:01:48,424 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 251 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 251 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:01:48,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:01:48,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 28 conjunts are in the unsatisfiable core [2021-06-05 08:01:48,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:01:48,647 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:48,648 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2120305179] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:48,648 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:01:48,648 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 28 [2021-06-05 08:01:48,648 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288782947] [2021-06-05 08:01:48,648 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-06-05 08:01:48,648 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:01:48,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-06-05 08:01:48,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=591, Unknown=0, NotChecked=0, Total=756 [2021-06-05 08:01:48,649 INFO L87 Difference]: Start difference. First operand 4578 states and 12888 transitions. Second operand has 28 states, 28 states have (on average 5.071428571428571) internal successors, (142), 28 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:49,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:01:49,466 INFO L93 Difference]: Finished difference Result 6398 states and 17321 transitions. [2021-06-05 08:01:49,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-06-05 08:01:49,467 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.071428571428571) internal successors, (142), 28 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2021-06-05 08:01:49,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:01:49,474 INFO L225 Difference]: With dead ends: 6398 [2021-06-05 08:01:49,474 INFO L226 Difference]: Without dead ends: 6128 [2021-06-05 08:01:49,475 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1383 ImplicationChecksByTransitivity, 807.2ms TimeCoverageRelationStatistics Valid=1508, Invalid=3748, Unknown=0, NotChecked=0, Total=5256 [2021-06-05 08:01:49,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6128 states. [2021-06-05 08:01:49,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6128 to 4758. [2021-06-05 08:01:49,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4758 states, 4757 states have (on average 2.8267815850325837) internal successors, (13447), 4757 states have internal predecessors, (13447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:49,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4758 states to 4758 states and 13447 transitions. [2021-06-05 08:01:49,546 INFO L78 Accepts]: Start accepts. Automaton has 4758 states and 13447 transitions. Word has length 140 [2021-06-05 08:01:49,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:01:49,547 INFO L482 AbstractCegarLoop]: Abstraction has 4758 states and 13447 transitions. [2021-06-05 08:01:49,547 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 5.071428571428571) internal successors, (142), 28 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:49,547 INFO L276 IsEmpty]: Start isEmpty. Operand 4758 states and 13447 transitions. [2021-06-05 08:01:49,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-06-05 08:01:49,552 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:01:49,552 INFO L521 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:01:49,753 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 251 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable255 [2021-06-05 08:01:49,754 INFO L430 AbstractCegarLoop]: === Iteration 257 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:01:49,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:01:49,754 INFO L82 PathProgramCache]: Analyzing trace with hash 1991569312, now seen corresponding path program 248 times [2021-06-05 08:01:49,754 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:01:49,754 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507763559] [2021-06-05 08:01:49,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:01:49,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:01:49,952 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:49,952 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:01:49,952 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507763559] [2021-06-05 08:01:49,953 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507763559] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:49,953 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [380640250] [2021-06-05 08:01:49,953 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 252 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 252 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:01:50,012 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 08:01:50,012 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:01:50,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 28 conjunts are in the unsatisfiable core [2021-06-05 08:01:50,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:01:50,176 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:50,176 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [380640250] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:50,176 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:01:50,176 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 29 [2021-06-05 08:01:50,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227898905] [2021-06-05 08:01:50,177 INFO L462 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-06-05 08:01:50,177 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:01:50,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-06-05 08:01:50,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=644, Unknown=0, NotChecked=0, Total=812 [2021-06-05 08:01:50,177 INFO L87 Difference]: Start difference. First operand 4758 states and 13447 transitions. Second operand has 29 states, 29 states have (on average 4.931034482758621) internal successors, (143), 29 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:51,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:01:51,270 INFO L93 Difference]: Finished difference Result 6221 states and 16821 transitions. [2021-06-05 08:01:51,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-06-05 08:01:51,271 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.931034482758621) internal successors, (143), 29 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2021-06-05 08:01:51,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:01:51,277 INFO L225 Difference]: With dead ends: 6221 [2021-06-05 08:01:51,277 INFO L226 Difference]: Without dead ends: 5646 [2021-06-05 08:01:51,277 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1686 ImplicationChecksByTransitivity, 1058.2ms TimeCoverageRelationStatistics Valid=1708, Invalid=4612, Unknown=0, NotChecked=0, Total=6320 [2021-06-05 08:01:51,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5646 states. [2021-06-05 08:01:51,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5646 to 3203. [2021-06-05 08:01:51,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3203 states, 3202 states have (on average 2.7382885696439727) internal successors, (8768), 3202 states have internal predecessors, (8768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:51,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3203 states to 3203 states and 8768 transitions. [2021-06-05 08:01:51,323 INFO L78 Accepts]: Start accepts. Automaton has 3203 states and 8768 transitions. Word has length 140 [2021-06-05 08:01:51,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:01:51,323 INFO L482 AbstractCegarLoop]: Abstraction has 3203 states and 8768 transitions. [2021-06-05 08:01:51,323 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 4.931034482758621) internal successors, (143), 29 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:51,323 INFO L276 IsEmpty]: Start isEmpty. Operand 3203 states and 8768 transitions. [2021-06-05 08:01:51,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-06-05 08:01:51,325 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:01:51,325 INFO L521 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:01:51,527 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 252 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable256 [2021-06-05 08:01:51,527 INFO L430 AbstractCegarLoop]: === Iteration 258 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:01:51,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:01:51,527 INFO L82 PathProgramCache]: Analyzing trace with hash 1192364991, now seen corresponding path program 249 times [2021-06-05 08:01:51,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:01:51,528 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068700922] [2021-06-05 08:01:51,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:01:51,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:01:51,795 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:51,795 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:01:51,795 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068700922] [2021-06-05 08:01:51,795 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068700922] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:51,795 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [301469643] [2021-06-05 08:01:51,795 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 253 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 253 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:01:51,874 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2021-06-05 08:01:51,875 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:01:51,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-05 08:01:51,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:01:52,057 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:52,057 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [301469643] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:52,057 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:01:52,057 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 29 [2021-06-05 08:01:52,057 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020751320] [2021-06-05 08:01:52,057 INFO L462 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-06-05 08:01:52,057 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:01:52,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-06-05 08:01:52,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=634, Unknown=0, NotChecked=0, Total=812 [2021-06-05 08:01:52,058 INFO L87 Difference]: Start difference. First operand 3203 states and 8768 transitions. Second operand has 29 states, 29 states have (on average 5.068965517241379) internal successors, (147), 29 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:52,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:01:52,573 INFO L93 Difference]: Finished difference Result 4721 states and 12007 transitions. [2021-06-05 08:01:52,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-06-05 08:01:52,573 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 5.068965517241379) internal successors, (147), 29 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 145 [2021-06-05 08:01:52,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:01:52,578 INFO L225 Difference]: With dead ends: 4721 [2021-06-05 08:01:52,578 INFO L226 Difference]: Without dead ends: 4451 [2021-06-05 08:01:52,578 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 577 ImplicationChecksByTransitivity, 594.0ms TimeCoverageRelationStatistics Valid=844, Invalid=2348, Unknown=0, NotChecked=0, Total=3192 [2021-06-05 08:01:52,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4451 states. [2021-06-05 08:01:52,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4451 to 3278. [2021-06-05 08:01:52,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3278 states, 3277 states have (on average 2.744278303326213) internal successors, (8993), 3277 states have internal predecessors, (8993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:52,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3278 states to 3278 states and 8993 transitions. [2021-06-05 08:01:52,614 INFO L78 Accepts]: Start accepts. Automaton has 3278 states and 8993 transitions. Word has length 145 [2021-06-05 08:01:52,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:01:52,614 INFO L482 AbstractCegarLoop]: Abstraction has 3278 states and 8993 transitions. [2021-06-05 08:01:52,614 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 5.068965517241379) internal successors, (147), 29 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:52,614 INFO L276 IsEmpty]: Start isEmpty. Operand 3278 states and 8993 transitions. [2021-06-05 08:01:52,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-06-05 08:01:52,617 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:01:52,617 INFO L521 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:01:52,817 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 253 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable257 [2021-06-05 08:01:52,818 INFO L430 AbstractCegarLoop]: === Iteration 259 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:01:52,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:01:52,818 INFO L82 PathProgramCache]: Analyzing trace with hash 315630223, now seen corresponding path program 250 times [2021-06-05 08:01:52,818 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:01:52,818 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356757980] [2021-06-05 08:01:52,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:01:52,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:01:53,086 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:53,087 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:01:53,087 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356757980] [2021-06-05 08:01:53,087 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356757980] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:53,087 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [623777122] [2021-06-05 08:01:53,087 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 254 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 254 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:01:53,150 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 08:01:53,151 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:01:53,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-05 08:01:53,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:01:53,377 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:53,377 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [623777122] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:53,377 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:01:53,377 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 30 [2021-06-05 08:01:53,377 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972483749] [2021-06-05 08:01:53,377 INFO L462 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-06-05 08:01:53,378 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:01:53,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-06-05 08:01:53,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=699, Unknown=0, NotChecked=0, Total=870 [2021-06-05 08:01:53,378 INFO L87 Difference]: Start difference. First operand 3278 states and 8993 transitions. Second operand has 30 states, 30 states have (on average 4.966666666666667) internal successors, (149), 30 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:53,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:01:53,918 INFO L93 Difference]: Finished difference Result 5291 states and 13222 transitions. [2021-06-05 08:01:53,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-06-05 08:01:53,918 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 4.966666666666667) internal successors, (149), 30 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 145 [2021-06-05 08:01:53,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:01:53,923 INFO L225 Difference]: With dead ends: 5291 [2021-06-05 08:01:53,924 INFO L226 Difference]: Without dead ends: 5021 [2021-06-05 08:01:53,924 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 672 ImplicationChecksByTransitivity, 638.0ms TimeCoverageRelationStatistics Valid=905, Invalid=2635, Unknown=0, NotChecked=0, Total=3540 [2021-06-05 08:01:53,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5021 states. [2021-06-05 08:01:53,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5021 to 3353. [2021-06-05 08:01:53,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3353 states, 3352 states have (on average 2.75) internal successors, (9218), 3352 states have internal predecessors, (9218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:53,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3353 states to 3353 states and 9218 transitions. [2021-06-05 08:01:53,971 INFO L78 Accepts]: Start accepts. Automaton has 3353 states and 9218 transitions. Word has length 145 [2021-06-05 08:01:53,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:01:53,971 INFO L482 AbstractCegarLoop]: Abstraction has 3353 states and 9218 transitions. [2021-06-05 08:01:53,971 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 4.966666666666667) internal successors, (149), 30 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:53,972 INFO L276 IsEmpty]: Start isEmpty. Operand 3353 states and 9218 transitions. [2021-06-05 08:01:53,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-06-05 08:01:53,975 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:01:53,975 INFO L521 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:01:54,176 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable258,254 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:01:54,176 INFO L430 AbstractCegarLoop]: === Iteration 260 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:01:54,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:01:54,176 INFO L82 PathProgramCache]: Analyzing trace with hash -1421696131, now seen corresponding path program 251 times [2021-06-05 08:01:54,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:01:54,176 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935965334] [2021-06-05 08:01:54,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:01:54,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:01:54,472 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:54,472 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:01:54,472 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935965334] [2021-06-05 08:01:54,472 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935965334] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:54,472 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1712999763] [2021-06-05 08:01:54,472 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 255 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 255 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:01:54,535 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2021-06-05 08:01:54,535 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:01:54,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-05 08:01:54,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:01:54,717 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:54,717 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1712999763] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:54,717 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:01:54,717 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 29 [2021-06-05 08:01:54,717 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23064169] [2021-06-05 08:01:54,717 INFO L462 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-06-05 08:01:54,717 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:01:54,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-06-05 08:01:54,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=652, Unknown=0, NotChecked=0, Total=812 [2021-06-05 08:01:54,718 INFO L87 Difference]: Start difference. First operand 3353 states and 9218 transitions. Second operand has 29 states, 29 states have (on average 5.068965517241379) internal successors, (147), 29 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:55,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:01:55,244 INFO L93 Difference]: Finished difference Result 5321 states and 13357 transitions. [2021-06-05 08:01:55,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-06-05 08:01:55,245 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 5.068965517241379) internal successors, (147), 29 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 145 [2021-06-05 08:01:55,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:01:55,251 INFO L225 Difference]: With dead ends: 5321 [2021-06-05 08:01:55,251 INFO L226 Difference]: Without dead ends: 5051 [2021-06-05 08:01:55,252 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 734 ImplicationChecksByTransitivity, 639.0ms TimeCoverageRelationStatistics Valid=899, Invalid=2641, Unknown=0, NotChecked=0, Total=3540 [2021-06-05 08:01:55,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5051 states. [2021-06-05 08:01:55,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5051 to 3428. [2021-06-05 08:01:55,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3428 states, 3427 states have (on average 2.7554712576597606) internal successors, (9443), 3427 states have internal predecessors, (9443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:55,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3428 states to 3428 states and 9443 transitions. [2021-06-05 08:01:55,295 INFO L78 Accepts]: Start accepts. Automaton has 3428 states and 9443 transitions. Word has length 145 [2021-06-05 08:01:55,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:01:55,295 INFO L482 AbstractCegarLoop]: Abstraction has 3428 states and 9443 transitions. [2021-06-05 08:01:55,295 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 5.068965517241379) internal successors, (147), 29 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:55,295 INFO L276 IsEmpty]: Start isEmpty. Operand 3428 states and 9443 transitions. [2021-06-05 08:01:55,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-06-05 08:01:55,298 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:01:55,298 INFO L521 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:01:55,498 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 255 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable259 [2021-06-05 08:01:55,498 INFO L430 AbstractCegarLoop]: === Iteration 261 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:01:55,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:01:55,499 INFO L82 PathProgramCache]: Analyzing trace with hash -57147827, now seen corresponding path program 252 times [2021-06-05 08:01:55,499 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:01:55,499 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228280913] [2021-06-05 08:01:55,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:01:55,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:01:55,774 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:55,775 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:01:55,775 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228280913] [2021-06-05 08:01:55,775 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228280913] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:55,775 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1194852527] [2021-06-05 08:01:55,775 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 256 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 256 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:01:55,850 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2021-06-05 08:01:55,850 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:01:55,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-05 08:01:55,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:01:56,045 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:56,046 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1194852527] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:56,046 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:01:56,046 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 30 [2021-06-05 08:01:56,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957694500] [2021-06-05 08:01:56,046 INFO L462 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-06-05 08:01:56,046 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:01:56,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-06-05 08:01:56,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=716, Unknown=0, NotChecked=0, Total=870 [2021-06-05 08:01:56,046 INFO L87 Difference]: Start difference. First operand 3428 states and 9443 transitions. Second operand has 30 states, 30 states have (on average 4.966666666666667) internal successors, (149), 30 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:56,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:01:56,643 INFO L93 Difference]: Finished difference Result 5346 states and 13482 transitions. [2021-06-05 08:01:56,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-05 08:01:56,644 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 4.966666666666667) internal successors, (149), 30 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 145 [2021-06-05 08:01:56,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:01:56,649 INFO L225 Difference]: With dead ends: 5346 [2021-06-05 08:01:56,650 INFO L226 Difference]: Without dead ends: 5076 [2021-06-05 08:01:56,650 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 752 ImplicationChecksByTransitivity, 699.8ms TimeCoverageRelationStatistics Valid=922, Invalid=2860, Unknown=0, NotChecked=0, Total=3782 [2021-06-05 08:01:56,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5076 states. [2021-06-05 08:01:56,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5076 to 3503. [2021-06-05 08:01:56,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3503 states, 3502 states have (on average 2.7607081667618503) internal successors, (9668), 3502 states have internal predecessors, (9668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:56,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3503 states to 3503 states and 9668 transitions. [2021-06-05 08:01:56,696 INFO L78 Accepts]: Start accepts. Automaton has 3503 states and 9668 transitions. Word has length 145 [2021-06-05 08:01:56,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:01:56,696 INFO L482 AbstractCegarLoop]: Abstraction has 3503 states and 9668 transitions. [2021-06-05 08:01:56,696 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 4.966666666666667) internal successors, (149), 30 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:56,696 INFO L276 IsEmpty]: Start isEmpty. Operand 3503 states and 9668 transitions. [2021-06-05 08:01:56,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-06-05 08:01:56,699 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:01:56,700 INFO L521 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:01:56,900 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable260,256 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:01:56,900 INFO L430 AbstractCegarLoop]: === Iteration 262 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:01:56,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:01:56,900 INFO L82 PathProgramCache]: Analyzing trace with hash 1960587451, now seen corresponding path program 253 times [2021-06-05 08:01:56,900 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:01:56,900 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149317093] [2021-06-05 08:01:56,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:01:56,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:01:57,140 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:57,141 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:01:57,141 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149317093] [2021-06-05 08:01:57,141 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149317093] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:57,141 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1707898488] [2021-06-05 08:01:57,141 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 257 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 257 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:01:57,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:01:57,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-05 08:01:57,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:01:57,390 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:57,390 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1707898488] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:57,390 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:01:57,390 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 29 [2021-06-05 08:01:57,390 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455316021] [2021-06-05 08:01:57,390 INFO L462 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-06-05 08:01:57,391 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:01:57,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-06-05 08:01:57,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=666, Unknown=0, NotChecked=0, Total=812 [2021-06-05 08:01:57,391 INFO L87 Difference]: Start difference. First operand 3503 states and 9668 transitions. Second operand has 29 states, 29 states have (on average 5.068965517241379) internal successors, (147), 29 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:57,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:01:57,952 INFO L93 Difference]: Finished difference Result 5371 states and 13607 transitions. [2021-06-05 08:01:57,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-05 08:01:57,953 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 5.068965517241379) internal successors, (147), 29 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 145 [2021-06-05 08:01:57,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:01:57,959 INFO L225 Difference]: With dead ends: 5371 [2021-06-05 08:01:57,959 INFO L226 Difference]: Without dead ends: 5101 [2021-06-05 08:01:57,959 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 824 ImplicationChecksByTransitivity, 620.5ms TimeCoverageRelationStatistics Valid=930, Invalid=2852, Unknown=0, NotChecked=0, Total=3782 [2021-06-05 08:01:57,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5101 states. [2021-06-05 08:01:58,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5101 to 3578. [2021-06-05 08:01:58,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3578 states, 3577 states have (on average 2.7657254682694994) internal successors, (9893), 3577 states have internal predecessors, (9893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:58,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3578 states to 3578 states and 9893 transitions. [2021-06-05 08:01:58,027 INFO L78 Accepts]: Start accepts. Automaton has 3578 states and 9893 transitions. Word has length 145 [2021-06-05 08:01:58,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:01:58,027 INFO L482 AbstractCegarLoop]: Abstraction has 3578 states and 9893 transitions. [2021-06-05 08:01:58,027 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 5.068965517241379) internal successors, (147), 29 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:58,027 INFO L276 IsEmpty]: Start isEmpty. Operand 3578 states and 9893 transitions. [2021-06-05 08:01:58,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-06-05 08:01:58,032 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:01:58,032 INFO L521 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:01:58,252 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable261,257 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:01:58,253 INFO L430 AbstractCegarLoop]: === Iteration 263 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:01:58,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:01:58,253 INFO L82 PathProgramCache]: Analyzing trace with hash 1062064011, now seen corresponding path program 254 times [2021-06-05 08:01:58,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:01:58,253 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984224323] [2021-06-05 08:01:58,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:01:58,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:01:58,502 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:58,502 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:01:58,502 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984224323] [2021-06-05 08:01:58,502 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984224323] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:58,502 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [127906958] [2021-06-05 08:01:58,502 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 258 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 258 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:01:58,564 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 08:01:58,564 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:01:58,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-05 08:01:58,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:01:58,754 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:58,754 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [127906958] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:58,754 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:01:58,754 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 30 [2021-06-05 08:01:58,754 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601954470] [2021-06-05 08:01:58,754 INFO L462 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-06-05 08:01:58,754 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:01:58,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-06-05 08:01:58,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=729, Unknown=0, NotChecked=0, Total=870 [2021-06-05 08:01:58,755 INFO L87 Difference]: Start difference. First operand 3578 states and 9893 transitions. Second operand has 30 states, 30 states have (on average 4.966666666666667) internal successors, (149), 30 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:59,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:01:59,399 INFO L93 Difference]: Finished difference Result 5396 states and 13732 transitions. [2021-06-05 08:01:59,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-06-05 08:01:59,399 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 4.966666666666667) internal successors, (149), 30 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 145 [2021-06-05 08:01:59,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:01:59,405 INFO L225 Difference]: With dead ends: 5396 [2021-06-05 08:01:59,405 INFO L226 Difference]: Without dead ends: 5126 [2021-06-05 08:01:59,405 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 845 ImplicationChecksByTransitivity, 708.5ms TimeCoverageRelationStatistics Valid=955, Invalid=3077, Unknown=0, NotChecked=0, Total=4032 [2021-06-05 08:01:59,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5126 states. [2021-06-05 08:01:59,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5126 to 3653. [2021-06-05 08:01:59,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3653 states, 3652 states have (on average 2.7705366922234393) internal successors, (10118), 3652 states have internal predecessors, (10118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:59,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3653 states to 3653 states and 10118 transitions. [2021-06-05 08:01:59,455 INFO L78 Accepts]: Start accepts. Automaton has 3653 states and 10118 transitions. Word has length 145 [2021-06-05 08:01:59,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:01:59,455 INFO L482 AbstractCegarLoop]: Abstraction has 3653 states and 10118 transitions. [2021-06-05 08:01:59,455 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 4.966666666666667) internal successors, (149), 30 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:59,455 INFO L276 IsEmpty]: Start isEmpty. Operand 3653 states and 10118 transitions. [2021-06-05 08:01:59,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-06-05 08:01:59,458 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:01:59,458 INFO L521 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:01:59,658 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable262,258 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:01:59,659 INFO L430 AbstractCegarLoop]: === Iteration 264 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:01:59,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:01:59,659 INFO L82 PathProgramCache]: Analyzing trace with hash -552889479, now seen corresponding path program 255 times [2021-06-05 08:01:59,659 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:01:59,659 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299978001] [2021-06-05 08:01:59,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:01:59,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:01:59,898 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:59,898 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:01:59,898 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299978001] [2021-06-05 08:01:59,898 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299978001] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:59,898 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1579994694] [2021-06-05 08:01:59,899 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 259 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 259 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:01:59,969 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2021-06-05 08:01:59,969 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:01:59,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-05 08:01:59,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:02:00,151 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:00,151 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1579994694] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:00,151 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:02:00,152 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 29 [2021-06-05 08:02:00,152 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769443246] [2021-06-05 08:02:00,152 INFO L462 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-06-05 08:02:00,152 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:02:00,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-06-05 08:02:00,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=676, Unknown=0, NotChecked=0, Total=812 [2021-06-05 08:02:00,152 INFO L87 Difference]: Start difference. First operand 3653 states and 10118 transitions. Second operand has 29 states, 29 states have (on average 5.068965517241379) internal successors, (147), 29 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:00,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:02:00,763 INFO L93 Difference]: Finished difference Result 5421 states and 13857 transitions. [2021-06-05 08:02:00,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-05 08:02:00,764 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 5.068965517241379) internal successors, (147), 29 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 145 [2021-06-05 08:02:00,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:02:00,770 INFO L225 Difference]: With dead ends: 5421 [2021-06-05 08:02:00,770 INFO L226 Difference]: Without dead ends: 5151 [2021-06-05 08:02:00,770 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 922 ImplicationChecksByTransitivity, 634.4ms TimeCoverageRelationStatistics Valid=977, Invalid=3055, Unknown=0, NotChecked=0, Total=4032 [2021-06-05 08:02:00,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5151 states. [2021-06-05 08:02:00,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5151 to 3728. [2021-06-05 08:02:00,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3728 states, 3727 states have (on average 2.775154279581433) internal successors, (10343), 3727 states have internal predecessors, (10343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:00,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3728 states to 3728 states and 10343 transitions. [2021-06-05 08:02:00,817 INFO L78 Accepts]: Start accepts. Automaton has 3728 states and 10343 transitions. Word has length 145 [2021-06-05 08:02:00,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:02:00,817 INFO L482 AbstractCegarLoop]: Abstraction has 3728 states and 10343 transitions. [2021-06-05 08:02:00,817 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 5.068965517241379) internal successors, (147), 29 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:00,817 INFO L276 IsEmpty]: Start isEmpty. Operand 3728 states and 10343 transitions. [2021-06-05 08:02:00,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-06-05 08:02:00,820 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:02:00,820 INFO L521 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:02:01,021 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable263,259 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:02:01,021 INFO L430 AbstractCegarLoop]: === Iteration 265 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:02:01,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:02:01,021 INFO L82 PathProgramCache]: Analyzing trace with hash -933333431, now seen corresponding path program 256 times [2021-06-05 08:02:01,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:02:01,021 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816247166] [2021-06-05 08:02:01,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:02:01,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:02:01,305 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:01,305 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:02:01,305 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816247166] [2021-06-05 08:02:01,305 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816247166] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:01,305 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1262511631] [2021-06-05 08:02:01,306 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 260 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 260 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:02:01,378 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 08:02:01,378 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:02:01,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-05 08:02:01,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:02:01,573 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:01,573 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1262511631] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:01,573 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:02:01,574 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 30 [2021-06-05 08:02:01,574 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143903366] [2021-06-05 08:02:01,574 INFO L462 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-06-05 08:02:01,574 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:02:01,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-06-05 08:02:01,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=738, Unknown=0, NotChecked=0, Total=870 [2021-06-05 08:02:01,574 INFO L87 Difference]: Start difference. First operand 3728 states and 10343 transitions. Second operand has 30 states, 30 states have (on average 4.966666666666667) internal successors, (149), 30 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:02,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:02:02,261 INFO L93 Difference]: Finished difference Result 5446 states and 13982 transitions. [2021-06-05 08:02:02,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-05 08:02:02,262 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 4.966666666666667) internal successors, (149), 30 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 145 [2021-06-05 08:02:02,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:02:02,269 INFO L225 Difference]: With dead ends: 5446 [2021-06-05 08:02:02,269 INFO L226 Difference]: Without dead ends: 5176 [2021-06-05 08:02:02,270 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 946 ImplicationChecksByTransitivity, 773.5ms TimeCoverageRelationStatistics Valid=1004, Invalid=3286, Unknown=0, NotChecked=0, Total=4290 [2021-06-05 08:02:02,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5176 states. [2021-06-05 08:02:02,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5176 to 3803. [2021-06-05 08:02:02,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3803 states, 3802 states have (on average 2.7795896896370333) internal successors, (10568), 3802 states have internal predecessors, (10568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:02,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3803 states to 3803 states and 10568 transitions. [2021-06-05 08:02:02,321 INFO L78 Accepts]: Start accepts. Automaton has 3803 states and 10568 transitions. Word has length 145 [2021-06-05 08:02:02,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:02:02,321 INFO L482 AbstractCegarLoop]: Abstraction has 3803 states and 10568 transitions. [2021-06-05 08:02:02,321 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 4.966666666666667) internal successors, (149), 30 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:02,322 INFO L276 IsEmpty]: Start isEmpty. Operand 3803 states and 10568 transitions. [2021-06-05 08:02:02,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-06-05 08:02:02,325 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:02:02,325 INFO L521 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:02:02,525 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable264,260 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:02:02,525 INFO L430 AbstractCegarLoop]: === Iteration 266 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:02:02,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:02:02,526 INFO L82 PathProgramCache]: Analyzing trace with hash -308958281, now seen corresponding path program 257 times [2021-06-05 08:02:02,526 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:02:02,526 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073144633] [2021-06-05 08:02:02,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:02:02,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:02:02,760 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:02,760 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:02:02,760 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073144633] [2021-06-05 08:02:02,760 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073144633] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:02,760 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [73516300] [2021-06-05 08:02:02,760 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 261 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 261 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:02:02,823 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2021-06-05 08:02:02,823 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:02:02,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-05 08:02:02,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:02:03,020 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:03,020 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [73516300] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:03,020 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:02:03,020 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 29 [2021-06-05 08:02:03,020 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057668569] [2021-06-05 08:02:03,020 INFO L462 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-06-05 08:02:03,021 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:02:03,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-06-05 08:02:03,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=682, Unknown=0, NotChecked=0, Total=812 [2021-06-05 08:02:03,021 INFO L87 Difference]: Start difference. First operand 3803 states and 10568 transitions. Second operand has 29 states, 29 states have (on average 5.068965517241379) internal successors, (147), 29 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:03,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:02:03,665 INFO L93 Difference]: Finished difference Result 5471 states and 14107 transitions. [2021-06-05 08:02:03,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-05 08:02:03,665 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 5.068965517241379) internal successors, (147), 29 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 145 [2021-06-05 08:02:03,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:02:03,671 INFO L225 Difference]: With dead ends: 5471 [2021-06-05 08:02:03,672 INFO L226 Difference]: Without dead ends: 5201 [2021-06-05 08:02:03,672 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1024 ImplicationChecksByTransitivity, 661.2ms TimeCoverageRelationStatistics Valid=1040, Invalid=3250, Unknown=0, NotChecked=0, Total=4290 [2021-06-05 08:02:03,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5201 states. [2021-06-05 08:02:03,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5201 to 3878. [2021-06-05 08:02:03,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3878 states, 3877 states have (on average 2.7838534949703377) internal successors, (10793), 3877 states have internal predecessors, (10793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:03,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3878 states to 3878 states and 10793 transitions. [2021-06-05 08:02:03,721 INFO L78 Accepts]: Start accepts. Automaton has 3878 states and 10793 transitions. Word has length 145 [2021-06-05 08:02:03,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:02:03,721 INFO L482 AbstractCegarLoop]: Abstraction has 3878 states and 10793 transitions. [2021-06-05 08:02:03,721 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 5.068965517241379) internal successors, (147), 29 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:03,721 INFO L276 IsEmpty]: Start isEmpty. Operand 3878 states and 10793 transitions. [2021-06-05 08:02:03,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-06-05 08:02:03,724 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:02:03,724 INFO L521 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:02:03,925 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 261 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable265 [2021-06-05 08:02:03,925 INFO L430 AbstractCegarLoop]: === Iteration 267 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:02:03,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:02:03,925 INFO L82 PathProgramCache]: Analyzing trace with hash 500093575, now seen corresponding path program 258 times [2021-06-05 08:02:03,925 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:02:03,925 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560455915] [2021-06-05 08:02:03,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:02:03,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:02:04,160 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:04,160 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:02:04,160 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560455915] [2021-06-05 08:02:04,160 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560455915] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:04,160 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1853241798] [2021-06-05 08:02:04,160 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 262 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 262 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:02:04,230 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2021-06-05 08:02:04,230 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:02:04,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-05 08:02:04,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:02:04,419 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:04,419 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1853241798] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:04,419 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:02:04,419 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 30 [2021-06-05 08:02:04,419 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045483150] [2021-06-05 08:02:04,419 INFO L462 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-06-05 08:02:04,420 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:02:04,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-06-05 08:02:04,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=743, Unknown=0, NotChecked=0, Total=870 [2021-06-05 08:02:04,420 INFO L87 Difference]: Start difference. First operand 3878 states and 10793 transitions. Second operand has 30 states, 30 states have (on average 4.966666666666667) internal successors, (149), 30 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:05,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:02:05,193 INFO L93 Difference]: Finished difference Result 5496 states and 14232 transitions. [2021-06-05 08:02:05,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-06-05 08:02:05,194 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 4.966666666666667) internal successors, (149), 30 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 145 [2021-06-05 08:02:05,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:02:05,200 INFO L225 Difference]: With dead ends: 5496 [2021-06-05 08:02:05,200 INFO L226 Difference]: Without dead ends: 5226 [2021-06-05 08:02:05,201 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1051 ImplicationChecksByTransitivity, 779.5ms TimeCoverageRelationStatistics Valid=1069, Invalid=3487, Unknown=0, NotChecked=0, Total=4556 [2021-06-05 08:02:05,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5226 states. [2021-06-05 08:02:05,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5226 to 3953. [2021-06-05 08:02:05,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3953 states, 3952 states have (on average 2.7879554655870447) internal successors, (11018), 3952 states have internal predecessors, (11018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:05,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3953 states to 3953 states and 11018 transitions. [2021-06-05 08:02:05,252 INFO L78 Accepts]: Start accepts. Automaton has 3953 states and 11018 transitions. Word has length 145 [2021-06-05 08:02:05,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:02:05,252 INFO L482 AbstractCegarLoop]: Abstraction has 3953 states and 11018 transitions. [2021-06-05 08:02:05,252 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 4.966666666666667) internal successors, (149), 30 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:05,252 INFO L276 IsEmpty]: Start isEmpty. Operand 3953 states and 11018 transitions. [2021-06-05 08:02:05,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-06-05 08:02:05,256 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:02:05,256 INFO L521 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:02:05,456 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable266,262 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:02:05,456 INFO L430 AbstractCegarLoop]: === Iteration 268 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:02:05,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:02:05,457 INFO L82 PathProgramCache]: Analyzing trace with hash -891856523, now seen corresponding path program 259 times [2021-06-05 08:02:05,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:02:05,457 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560887742] [2021-06-05 08:02:05,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:02:05,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:02:05,726 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:05,727 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:02:05,727 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560887742] [2021-06-05 08:02:05,727 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560887742] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:05,727 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [148497916] [2021-06-05 08:02:05,727 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 263 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 263 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:02:05,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:02:05,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-05 08:02:05,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:02:05,972 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:05,972 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [148497916] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:05,972 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:02:05,972 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 29 [2021-06-05 08:02:05,973 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593094188] [2021-06-05 08:02:05,973 INFO L462 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-06-05 08:02:05,973 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:02:05,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-06-05 08:02:05,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=684, Unknown=0, NotChecked=0, Total=812 [2021-06-05 08:02:05,973 INFO L87 Difference]: Start difference. First operand 3953 states and 11018 transitions. Second operand has 29 states, 29 states have (on average 5.068965517241379) internal successors, (147), 29 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:06,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:02:06,660 INFO L93 Difference]: Finished difference Result 5521 states and 14357 transitions. [2021-06-05 08:02:06,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-05 08:02:06,661 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 5.068965517241379) internal successors, (147), 29 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 145 [2021-06-05 08:02:06,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:02:06,666 INFO L225 Difference]: With dead ends: 5521 [2021-06-05 08:02:06,666 INFO L226 Difference]: Without dead ends: 5251 [2021-06-05 08:02:06,667 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1130 ImplicationChecksByTransitivity, 697.2ms TimeCoverageRelationStatistics Valid=1119, Invalid=3437, Unknown=0, NotChecked=0, Total=4556 [2021-06-05 08:02:06,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5251 states. [2021-06-05 08:02:06,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5251 to 4028. [2021-06-05 08:02:06,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4028 states, 4027 states have (on average 2.7919046436553265) internal successors, (11243), 4027 states have internal predecessors, (11243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:06,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4028 states to 4028 states and 11243 transitions. [2021-06-05 08:02:06,720 INFO L78 Accepts]: Start accepts. Automaton has 4028 states and 11243 transitions. Word has length 145 [2021-06-05 08:02:06,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:02:06,721 INFO L482 AbstractCegarLoop]: Abstraction has 4028 states and 11243 transitions. [2021-06-05 08:02:06,721 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 5.068965517241379) internal successors, (147), 29 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:06,721 INFO L276 IsEmpty]: Start isEmpty. Operand 4028 states and 11243 transitions. [2021-06-05 08:02:06,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-06-05 08:02:06,724 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:02:06,725 INFO L521 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:02:06,925 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 263 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable267 [2021-06-05 08:02:06,925 INFO L430 AbstractCegarLoop]: === Iteration 269 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:02:06,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:02:06,925 INFO L82 PathProgramCache]: Analyzing trace with hash -1136933819, now seen corresponding path program 260 times [2021-06-05 08:02:06,926 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:02:06,926 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462712764] [2021-06-05 08:02:06,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:02:06,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:02:07,152 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:07,152 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:02:07,152 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462712764] [2021-06-05 08:02:07,152 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462712764] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:07,152 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [4841187] [2021-06-05 08:02:07,152 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 264 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 264 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:02:07,212 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 08:02:07,212 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:02:07,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-05 08:02:07,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:02:07,399 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:07,399 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [4841187] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:07,399 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:02:07,399 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 30 [2021-06-05 08:02:07,399 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709809032] [2021-06-05 08:02:07,399 INFO L462 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-06-05 08:02:07,399 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:02:07,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-06-05 08:02:07,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=744, Unknown=0, NotChecked=0, Total=870 [2021-06-05 08:02:07,400 INFO L87 Difference]: Start difference. First operand 4028 states and 11243 transitions. Second operand has 30 states, 30 states have (on average 4.966666666666667) internal successors, (149), 30 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:08,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:02:08,224 INFO L93 Difference]: Finished difference Result 5546 states and 14482 transitions. [2021-06-05 08:02:08,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-06-05 08:02:08,224 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 4.966666666666667) internal successors, (149), 30 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 145 [2021-06-05 08:02:08,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:02:08,229 INFO L225 Difference]: With dead ends: 5546 [2021-06-05 08:02:08,229 INFO L226 Difference]: Without dead ends: 5276 [2021-06-05 08:02:08,230 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1160 ImplicationChecksByTransitivity, 829.7ms TimeCoverageRelationStatistics Valid=1150, Invalid=3680, Unknown=0, NotChecked=0, Total=4830 [2021-06-05 08:02:08,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5276 states. [2021-06-05 08:02:08,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5276 to 4103. [2021-06-05 08:02:08,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4103 states, 4102 states have (on average 2.795709410043881) internal successors, (11468), 4102 states have internal predecessors, (11468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:08,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4103 states to 4103 states and 11468 transitions. [2021-06-05 08:02:08,280 INFO L78 Accepts]: Start accepts. Automaton has 4103 states and 11468 transitions. Word has length 145 [2021-06-05 08:02:08,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:02:08,280 INFO L482 AbstractCegarLoop]: Abstraction has 4103 states and 11468 transitions. [2021-06-05 08:02:08,280 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 4.966666666666667) internal successors, (149), 30 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:08,280 INFO L276 IsEmpty]: Start isEmpty. Operand 4103 states and 11468 transitions. [2021-06-05 08:02:08,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-06-05 08:02:08,283 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:02:08,283 INFO L521 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:02:08,484 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 264 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable268 [2021-06-05 08:02:08,484 INFO L430 AbstractCegarLoop]: === Iteration 270 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:02:08,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:02:08,484 INFO L82 PathProgramCache]: Analyzing trace with hash -1513784141, now seen corresponding path program 261 times [2021-06-05 08:02:08,484 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:02:08,484 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895506431] [2021-06-05 08:02:08,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:02:08,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:02:08,701 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:08,701 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:02:08,702 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895506431] [2021-06-05 08:02:08,702 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895506431] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:08,702 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1072087815] [2021-06-05 08:02:08,702 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 265 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 265 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:02:08,772 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2021-06-05 08:02:08,772 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:02:08,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-05 08:02:08,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:02:08,941 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:08,941 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1072087815] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:08,941 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:02:08,941 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 29 [2021-06-05 08:02:08,941 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840284763] [2021-06-05 08:02:08,941 INFO L462 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-06-05 08:02:08,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:02:08,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-06-05 08:02:08,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=682, Unknown=0, NotChecked=0, Total=812 [2021-06-05 08:02:08,942 INFO L87 Difference]: Start difference. First operand 4103 states and 11468 transitions. Second operand has 29 states, 29 states have (on average 5.068965517241379) internal successors, (147), 29 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:09,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:02:09,655 INFO L93 Difference]: Finished difference Result 5571 states and 14607 transitions. [2021-06-05 08:02:09,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-06-05 08:02:09,655 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 5.068965517241379) internal successors, (147), 29 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 145 [2021-06-05 08:02:09,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:02:09,661 INFO L225 Difference]: With dead ends: 5571 [2021-06-05 08:02:09,661 INFO L226 Difference]: Without dead ends: 5301 [2021-06-05 08:02:09,662 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1240 ImplicationChecksByTransitivity, 707.1ms TimeCoverageRelationStatistics Valid=1214, Invalid=3616, Unknown=0, NotChecked=0, Total=4830 [2021-06-05 08:02:09,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5301 states. [2021-06-05 08:02:09,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5301 to 4178. [2021-06-05 08:02:09,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4178 states, 4177 states have (on average 2.799377543691645) internal successors, (11693), 4177 states have internal predecessors, (11693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:09,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4178 states to 4178 states and 11693 transitions. [2021-06-05 08:02:09,716 INFO L78 Accepts]: Start accepts. Automaton has 4178 states and 11693 transitions. Word has length 145 [2021-06-05 08:02:09,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:02:09,716 INFO L482 AbstractCegarLoop]: Abstraction has 4178 states and 11693 transitions. [2021-06-05 08:02:09,716 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 5.068965517241379) internal successors, (147), 29 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:09,716 INFO L276 IsEmpty]: Start isEmpty. Operand 4178 states and 11693 transitions. [2021-06-05 08:02:09,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-06-05 08:02:09,719 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:02:09,719 INFO L521 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:02:09,919 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable269,265 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:02:09,920 INFO L430 AbstractCegarLoop]: === Iteration 271 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:02:09,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:02:09,920 INFO L82 PathProgramCache]: Analyzing trace with hash -187028605, now seen corresponding path program 262 times [2021-06-05 08:02:09,920 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:02:09,920 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630547159] [2021-06-05 08:02:09,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:02:09,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:02:10,146 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:10,146 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:02:10,146 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630547159] [2021-06-05 08:02:10,146 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630547159] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:10,146 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1797191692] [2021-06-05 08:02:10,146 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 266 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 266 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:02:10,208 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 08:02:10,208 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:02:10,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-05 08:02:10,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:02:10,425 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:10,426 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1797191692] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:10,426 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:02:10,426 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 30 [2021-06-05 08:02:10,426 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389672791] [2021-06-05 08:02:10,426 INFO L462 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-06-05 08:02:10,426 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:02:10,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-06-05 08:02:10,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=741, Unknown=0, NotChecked=0, Total=870 [2021-06-05 08:02:10,427 INFO L87 Difference]: Start difference. First operand 4178 states and 11693 transitions. Second operand has 30 states, 30 states have (on average 4.966666666666667) internal successors, (149), 30 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:11,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:02:11,300 INFO L93 Difference]: Finished difference Result 5596 states and 14732 transitions. [2021-06-05 08:02:11,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-06-05 08:02:11,301 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 4.966666666666667) internal successors, (149), 30 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 145 [2021-06-05 08:02:11,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:02:11,307 INFO L225 Difference]: With dead ends: 5596 [2021-06-05 08:02:11,307 INFO L226 Difference]: Without dead ends: 5326 [2021-06-05 08:02:11,308 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1273 ImplicationChecksByTransitivity, 854.8ms TimeCoverageRelationStatistics Valid=1247, Invalid=3865, Unknown=0, NotChecked=0, Total=5112 [2021-06-05 08:02:11,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5326 states. [2021-06-05 08:02:11,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5326 to 4253. [2021-06-05 08:02:11,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4253 states, 4252 states have (on average 2.8029162746942617) internal successors, (11918), 4252 states have internal predecessors, (11918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:11,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4253 states to 4253 states and 11918 transitions. [2021-06-05 08:02:11,361 INFO L78 Accepts]: Start accepts. Automaton has 4253 states and 11918 transitions. Word has length 145 [2021-06-05 08:02:11,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:02:11,362 INFO L482 AbstractCegarLoop]: Abstraction has 4253 states and 11918 transitions. [2021-06-05 08:02:11,362 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 4.966666666666667) internal successors, (149), 30 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:11,362 INFO L276 IsEmpty]: Start isEmpty. Operand 4253 states and 11918 transitions. [2021-06-05 08:02:11,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-06-05 08:02:11,365 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:02:11,365 INFO L521 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:02:11,565 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 266 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable270 [2021-06-05 08:02:11,566 INFO L430 AbstractCegarLoop]: === Iteration 272 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:02:11,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:02:11,566 INFO L82 PathProgramCache]: Analyzing trace with hash 267187569, now seen corresponding path program 263 times [2021-06-05 08:02:11,566 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:02:11,566 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155407088] [2021-06-05 08:02:11,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:02:11,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:02:11,781 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:11,782 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:02:11,782 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155407088] [2021-06-05 08:02:11,782 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155407088] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:11,782 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [244095955] [2021-06-05 08:02:11,782 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 267 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 267 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:02:11,845 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2021-06-05 08:02:11,845 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:02:11,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-05 08:02:11,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:02:12,011 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:12,011 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [244095955] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:12,011 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:02:12,011 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 29 [2021-06-05 08:02:12,012 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863305112] [2021-06-05 08:02:12,012 INFO L462 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-06-05 08:02:12,012 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:02:12,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-06-05 08:02:12,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=676, Unknown=0, NotChecked=0, Total=812 [2021-06-05 08:02:12,012 INFO L87 Difference]: Start difference. First operand 4253 states and 11918 transitions. Second operand has 29 states, 29 states have (on average 5.068965517241379) internal successors, (147), 29 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:12,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:02:12,762 INFO L93 Difference]: Finished difference Result 5621 states and 14857 transitions. [2021-06-05 08:02:12,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-06-05 08:02:12,762 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 5.068965517241379) internal successors, (147), 29 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 145 [2021-06-05 08:02:12,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:02:12,767 INFO L225 Difference]: With dead ends: 5621 [2021-06-05 08:02:12,767 INFO L226 Difference]: Without dead ends: 5351 [2021-06-05 08:02:12,767 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1354 ImplicationChecksByTransitivity, 748.9ms TimeCoverageRelationStatistics Valid=1325, Invalid=3787, Unknown=0, NotChecked=0, Total=5112 [2021-06-05 08:02:12,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5351 states. [2021-06-05 08:02:12,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5351 to 4328. [2021-06-05 08:02:12,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4328 states, 4327 states have (on average 2.8063323318696556) internal successors, (12143), 4327 states have internal predecessors, (12143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:12,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4328 states to 4328 states and 12143 transitions. [2021-06-05 08:02:12,814 INFO L78 Accepts]: Start accepts. Automaton has 4328 states and 12143 transitions. Word has length 145 [2021-06-05 08:02:12,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:02:12,814 INFO L482 AbstractCegarLoop]: Abstraction has 4328 states and 12143 transitions. [2021-06-05 08:02:12,814 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 5.068965517241379) internal successors, (147), 29 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:12,814 INFO L276 IsEmpty]: Start isEmpty. Operand 4328 states and 12143 transitions. [2021-06-05 08:02:12,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-06-05 08:02:12,817 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:02:12,817 INFO L521 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:02:13,018 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable271,267 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:02:13,018 INFO L430 AbstractCegarLoop]: === Iteration 273 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:02:13,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:02:13,018 INFO L82 PathProgramCache]: Analyzing trace with hash 1266083905, now seen corresponding path program 264 times [2021-06-05 08:02:13,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:02:13,018 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22260920] [2021-06-05 08:02:13,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:02:13,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:02:13,237 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:13,237 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:02:13,237 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22260920] [2021-06-05 08:02:13,237 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22260920] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:13,237 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1505536790] [2021-06-05 08:02:13,238 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 268 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 268 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:02:13,307 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2021-06-05 08:02:13,307 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:02:13,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-05 08:02:13,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:02:13,489 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:13,489 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1505536790] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:13,489 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:02:13,489 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 30 [2021-06-05 08:02:13,489 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502688708] [2021-06-05 08:02:13,489 INFO L462 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-06-05 08:02:13,489 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:02:13,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-06-05 08:02:13,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=734, Unknown=0, NotChecked=0, Total=870 [2021-06-05 08:02:13,490 INFO L87 Difference]: Start difference. First operand 4328 states and 12143 transitions. Second operand has 30 states, 30 states have (on average 4.966666666666667) internal successors, (149), 30 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:14,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:02:14,410 INFO L93 Difference]: Finished difference Result 5646 states and 14982 transitions. [2021-06-05 08:02:14,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-06-05 08:02:14,411 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 4.966666666666667) internal successors, (149), 30 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 145 [2021-06-05 08:02:14,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:02:14,417 INFO L225 Difference]: With dead ends: 5646 [2021-06-05 08:02:14,417 INFO L226 Difference]: Without dead ends: 5376 [2021-06-05 08:02:14,418 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1390 ImplicationChecksByTransitivity, 895.3ms TimeCoverageRelationStatistics Valid=1360, Invalid=4042, Unknown=0, NotChecked=0, Total=5402 [2021-06-05 08:02:14,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5376 states. [2021-06-05 08:02:14,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5376 to 4403. [2021-06-05 08:02:14,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4403 states, 4402 states have (on average 2.809631985461154) internal successors, (12368), 4402 states have internal predecessors, (12368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:14,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4403 states to 4403 states and 12368 transitions. [2021-06-05 08:02:14,475 INFO L78 Accepts]: Start accepts. Automaton has 4403 states and 12368 transitions. Word has length 145 [2021-06-05 08:02:14,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:02:14,476 INFO L482 AbstractCegarLoop]: Abstraction has 4403 states and 12368 transitions. [2021-06-05 08:02:14,476 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 4.966666666666667) internal successors, (149), 30 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:14,476 INFO L276 IsEmpty]: Start isEmpty. Operand 4403 states and 12368 transitions. [2021-06-05 08:02:14,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-06-05 08:02:14,479 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:02:14,479 INFO L521 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:02:14,680 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable272,268 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:02:14,680 INFO L430 AbstractCegarLoop]: === Iteration 274 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:02:14,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:02:14,680 INFO L82 PathProgramCache]: Analyzing trace with hash -613243985, now seen corresponding path program 265 times [2021-06-05 08:02:14,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:02:14,680 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794927800] [2021-06-05 08:02:14,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:02:14,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:02:14,894 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:14,894 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:02:14,894 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794927800] [2021-06-05 08:02:14,895 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794927800] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:14,895 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1697221985] [2021-06-05 08:02:14,895 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 269 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 269 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:02:14,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:02:14,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-05 08:02:14,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:02:15,147 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:15,147 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1697221985] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:15,147 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:02:15,147 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 29 [2021-06-05 08:02:15,147 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120241135] [2021-06-05 08:02:15,147 INFO L462 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-06-05 08:02:15,147 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:02:15,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-06-05 08:02:15,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=666, Unknown=0, NotChecked=0, Total=812 [2021-06-05 08:02:15,148 INFO L87 Difference]: Start difference. First operand 4403 states and 12368 transitions. Second operand has 29 states, 29 states have (on average 5.068965517241379) internal successors, (147), 29 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:15,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:02:15,941 INFO L93 Difference]: Finished difference Result 5671 states and 15107 transitions. [2021-06-05 08:02:15,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-06-05 08:02:15,941 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 5.068965517241379) internal successors, (147), 29 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 145 [2021-06-05 08:02:15,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:02:15,947 INFO L225 Difference]: With dead ends: 5671 [2021-06-05 08:02:15,947 INFO L226 Difference]: Without dead ends: 5401 [2021-06-05 08:02:15,948 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1472 ImplicationChecksByTransitivity, 764.4ms TimeCoverageRelationStatistics Valid=1452, Invalid=3950, Unknown=0, NotChecked=0, Total=5402 [2021-06-05 08:02:15,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5401 states. [2021-06-05 08:02:15,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5401 to 4478. [2021-06-05 08:02:15,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4478 states, 4477 states have (on average 2.812821085548358) internal successors, (12593), 4477 states have internal predecessors, (12593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:16,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4478 states to 4478 states and 12593 transitions. [2021-06-05 08:02:16,003 INFO L78 Accepts]: Start accepts. Automaton has 4478 states and 12593 transitions. Word has length 145 [2021-06-05 08:02:16,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:02:16,003 INFO L482 AbstractCegarLoop]: Abstraction has 4478 states and 12593 transitions. [2021-06-05 08:02:16,004 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 5.068965517241379) internal successors, (147), 29 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:16,004 INFO L276 IsEmpty]: Start isEmpty. Operand 4478 states and 12593 transitions. [2021-06-05 08:02:16,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-06-05 08:02:16,007 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:02:16,007 INFO L521 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:02:16,207 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable273,269 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:02:16,208 INFO L430 AbstractCegarLoop]: === Iteration 275 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:02:16,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:02:16,208 INFO L82 PathProgramCache]: Analyzing trace with hash 1417075327, now seen corresponding path program 266 times [2021-06-05 08:02:16,208 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:02:16,208 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489710705] [2021-06-05 08:02:16,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:02:16,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:02:16,421 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:16,422 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:02:16,422 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489710705] [2021-06-05 08:02:16,422 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489710705] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:16,422 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1576995852] [2021-06-05 08:02:16,422 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 270 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 270 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:02:16,482 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 08:02:16,483 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:02:16,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-05 08:02:16,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:02:16,662 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:16,662 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1576995852] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:16,662 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:02:16,662 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 30 [2021-06-05 08:02:16,662 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757852583] [2021-06-05 08:02:16,663 INFO L462 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-06-05 08:02:16,663 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:02:16,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-06-05 08:02:16,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=723, Unknown=0, NotChecked=0, Total=870 [2021-06-05 08:02:16,663 INFO L87 Difference]: Start difference. First operand 4478 states and 12593 transitions. Second operand has 30 states, 30 states have (on average 4.966666666666667) internal successors, (149), 30 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:17,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:02:17,659 INFO L93 Difference]: Finished difference Result 5696 states and 15232 transitions. [2021-06-05 08:02:17,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-06-05 08:02:17,659 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 4.966666666666667) internal successors, (149), 30 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 145 [2021-06-05 08:02:17,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:02:17,664 INFO L225 Difference]: With dead ends: 5696 [2021-06-05 08:02:17,664 INFO L226 Difference]: Without dead ends: 5426 [2021-06-05 08:02:17,664 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1511 ImplicationChecksByTransitivity, 953.3ms TimeCoverageRelationStatistics Valid=1489, Invalid=4211, Unknown=0, NotChecked=0, Total=5700 [2021-06-05 08:02:17,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5426 states. [2021-06-05 08:02:17,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5426 to 4553. [2021-06-05 08:02:17,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4553 states, 4552 states have (on average 2.8159050966608086) internal successors, (12818), 4552 states have internal predecessors, (12818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:17,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4553 states to 4553 states and 12818 transitions. [2021-06-05 08:02:17,719 INFO L78 Accepts]: Start accepts. Automaton has 4553 states and 12818 transitions. Word has length 145 [2021-06-05 08:02:17,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:02:17,719 INFO L482 AbstractCegarLoop]: Abstraction has 4553 states and 12818 transitions. [2021-06-05 08:02:17,719 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 4.966666666666667) internal successors, (149), 30 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:17,719 INFO L276 IsEmpty]: Start isEmpty. Operand 4553 states and 12818 transitions. [2021-06-05 08:02:17,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-06-05 08:02:17,723 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:02:17,723 INFO L521 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:02:17,923 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable274,270 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:02:17,924 INFO L430 AbstractCegarLoop]: === Iteration 276 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:02:17,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:02:17,924 INFO L82 PathProgramCache]: Analyzing trace with hash 2031314797, now seen corresponding path program 267 times [2021-06-05 08:02:17,924 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:02:17,924 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067289681] [2021-06-05 08:02:17,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:02:17,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:02:18,135 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:18,135 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:02:18,135 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067289681] [2021-06-05 08:02:18,135 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067289681] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:18,135 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [576893221] [2021-06-05 08:02:18,136 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 271 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 271 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:02:18,206 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2021-06-05 08:02:18,206 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:02:18,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-05 08:02:18,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:02:18,369 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:18,369 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [576893221] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:18,369 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:02:18,369 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 29 [2021-06-05 08:02:18,369 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583192095] [2021-06-05 08:02:18,369 INFO L462 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-06-05 08:02:18,369 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:02:18,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-06-05 08:02:18,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=652, Unknown=0, NotChecked=0, Total=812 [2021-06-05 08:02:18,370 INFO L87 Difference]: Start difference. First operand 4553 states and 12818 transitions. Second operand has 29 states, 29 states have (on average 5.068965517241379) internal successors, (147), 29 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:19,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:02:19,206 INFO L93 Difference]: Finished difference Result 5766 states and 15477 transitions. [2021-06-05 08:02:19,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-06-05 08:02:19,206 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 5.068965517241379) internal successors, (147), 29 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 145 [2021-06-05 08:02:19,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:02:19,212 INFO L225 Difference]: With dead ends: 5766 [2021-06-05 08:02:19,212 INFO L226 Difference]: Without dead ends: 5496 [2021-06-05 08:02:19,213 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1594 ImplicationChecksByTransitivity, 799.1ms TimeCoverageRelationStatistics Valid=1595, Invalid=4105, Unknown=0, NotChecked=0, Total=5700 [2021-06-05 08:02:19,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5496 states. [2021-06-05 08:02:19,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5496 to 4628. [2021-06-05 08:02:19,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4628 states, 4627 states have (on average 2.822130970391182) internal successors, (13058), 4627 states have internal predecessors, (13058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:19,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4628 states to 4628 states and 13058 transitions. [2021-06-05 08:02:19,272 INFO L78 Accepts]: Start accepts. Automaton has 4628 states and 13058 transitions. Word has length 145 [2021-06-05 08:02:19,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:02:19,273 INFO L482 AbstractCegarLoop]: Abstraction has 4628 states and 13058 transitions. [2021-06-05 08:02:19,273 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 5.068965517241379) internal successors, (147), 29 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:19,273 INFO L276 IsEmpty]: Start isEmpty. Operand 4628 states and 13058 transitions. [2021-06-05 08:02:19,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-06-05 08:02:19,277 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:02:19,277 INFO L521 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:02:19,477 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable275,271 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:02:19,477 INFO L430 AbstractCegarLoop]: === Iteration 277 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:02:19,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:02:19,478 INFO L82 PathProgramCache]: Analyzing trace with hash 316072509, now seen corresponding path program 268 times [2021-06-05 08:02:19,478 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:02:19,478 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028161904] [2021-06-05 08:02:19,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:02:19,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:02:19,689 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:19,689 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:02:19,689 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028161904] [2021-06-05 08:02:19,689 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028161904] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:19,689 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1114945823] [2021-06-05 08:02:19,689 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 272 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 272 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:02:19,750 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 08:02:19,751 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:02:19,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-05 08:02:19,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:02:19,956 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:19,956 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1114945823] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:19,956 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:02:19,956 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 30 [2021-06-05 08:02:19,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514694741] [2021-06-05 08:02:19,956 INFO L462 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-06-05 08:02:19,956 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:02:19,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-06-05 08:02:19,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=708, Unknown=0, NotChecked=0, Total=870 [2021-06-05 08:02:19,957 INFO L87 Difference]: Start difference. First operand 4628 states and 13058 transitions. Second operand has 30 states, 30 states have (on average 4.966666666666667) internal successors, (149), 30 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:21,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:02:21,038 INFO L93 Difference]: Finished difference Result 6344 states and 17103 transitions. [2021-06-05 08:02:21,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-06-05 08:02:21,038 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 4.966666666666667) internal successors, (149), 30 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 145 [2021-06-05 08:02:21,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:02:21,044 INFO L225 Difference]: With dead ends: 6344 [2021-06-05 08:02:21,045 INFO L226 Difference]: Without dead ends: 5721 [2021-06-05 08:02:21,045 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1731 ImplicationChecksByTransitivity, 1015.3ms TimeCoverageRelationStatistics Valid=1657, Invalid=4663, Unknown=0, NotChecked=0, Total=6320 [2021-06-05 08:02:21,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5721 states. [2021-06-05 08:02:21,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5721 to 4703. [2021-06-05 08:02:21,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4703 states, 4702 states have (on average 2.8260314759676732) internal successors, (13288), 4702 states have internal predecessors, (13288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:21,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4703 states to 4703 states and 13288 transitions. [2021-06-05 08:02:21,100 INFO L78 Accepts]: Start accepts. Automaton has 4703 states and 13288 transitions. Word has length 145 [2021-06-05 08:02:21,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:02:21,100 INFO L482 AbstractCegarLoop]: Abstraction has 4703 states and 13288 transitions. [2021-06-05 08:02:21,100 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 4.966666666666667) internal successors, (149), 30 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:21,100 INFO L276 IsEmpty]: Start isEmpty. Operand 4703 states and 13288 transitions. [2021-06-05 08:02:21,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-06-05 08:02:21,104 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:02:21,104 INFO L521 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:02:21,304 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable276,272 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:02:21,304 INFO L430 AbstractCegarLoop]: === Iteration 278 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:02:21,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:02:21,305 INFO L82 PathProgramCache]: Analyzing trace with hash -716575093, now seen corresponding path program 269 times [2021-06-05 08:02:21,305 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:02:21,305 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126974382] [2021-06-05 08:02:21,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:02:21,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:02:21,529 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:21,530 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:02:21,530 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126974382] [2021-06-05 08:02:21,530 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126974382] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:21,530 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1003544802] [2021-06-05 08:02:21,530 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 273 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 273 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:02:21,592 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2021-06-05 08:02:21,593 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:02:21,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-05 08:02:21,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:02:21,757 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:21,757 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1003544802] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:21,757 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:02:21,758 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 29 [2021-06-05 08:02:21,758 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135234672] [2021-06-05 08:02:21,758 INFO L462 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-06-05 08:02:21,758 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:02:21,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-06-05 08:02:21,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=634, Unknown=0, NotChecked=0, Total=812 [2021-06-05 08:02:21,758 INFO L87 Difference]: Start difference. First operand 4703 states and 13288 transitions. Second operand has 29 states, 29 states have (on average 5.068965517241379) internal successors, (147), 29 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:22,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:02:22,625 INFO L93 Difference]: Finished difference Result 6548 states and 17771 transitions. [2021-06-05 08:02:22,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-06-05 08:02:22,626 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 5.068965517241379) internal successors, (147), 29 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 145 [2021-06-05 08:02:22,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:02:22,632 INFO L225 Difference]: With dead ends: 6548 [2021-06-05 08:02:22,632 INFO L226 Difference]: Without dead ends: 6278 [2021-06-05 08:02:22,632 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1719 ImplicationChecksByTransitivity, 842.7ms TimeCoverageRelationStatistics Valid=1755, Invalid=4251, Unknown=0, NotChecked=0, Total=6006 [2021-06-05 08:02:22,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6278 states. [2021-06-05 08:02:22,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6278 to 4883. [2021-06-05 08:02:22,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4883 states, 4882 states have (on average 2.8363375665710775) internal successors, (13847), 4882 states have internal predecessors, (13847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:22,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4883 states to 4883 states and 13847 transitions. [2021-06-05 08:02:22,687 INFO L78 Accepts]: Start accepts. Automaton has 4883 states and 13847 transitions. Word has length 145 [2021-06-05 08:02:22,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:02:22,687 INFO L482 AbstractCegarLoop]: Abstraction has 4883 states and 13847 transitions. [2021-06-05 08:02:22,687 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 5.068965517241379) internal successors, (147), 29 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:22,687 INFO L276 IsEmpty]: Start isEmpty. Operand 4883 states and 13847 transitions. [2021-06-05 08:02:22,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-06-05 08:02:22,691 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:02:22,691 INFO L521 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:02:22,891 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 273 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable277 [2021-06-05 08:02:22,892 INFO L430 AbstractCegarLoop]: === Iteration 279 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:02:22,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:02:22,892 INFO L82 PathProgramCache]: Analyzing trace with hash -694231843, now seen corresponding path program 270 times [2021-06-05 08:02:22,892 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:02:22,892 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557869827] [2021-06-05 08:02:22,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:02:22,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:02:23,147 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:23,147 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:02:23,147 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557869827] [2021-06-05 08:02:23,147 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557869827] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:23,147 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1523198457] [2021-06-05 08:02:23,147 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 274 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 274 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:02:23,242 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2021-06-05 08:02:23,242 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:02:23,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-05 08:02:23,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:02:23,415 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:23,415 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1523198457] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:23,415 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:02:23,415 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 30 [2021-06-05 08:02:23,415 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947935314] [2021-06-05 08:02:23,415 INFO L462 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-06-05 08:02:23,415 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:02:23,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-06-05 08:02:23,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=689, Unknown=0, NotChecked=0, Total=870 [2021-06-05 08:02:23,416 INFO L87 Difference]: Start difference. First operand 4883 states and 13847 transitions. Second operand has 30 states, 30 states have (on average 4.933333333333334) internal successors, (148), 30 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:24,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:02:24,518 INFO L93 Difference]: Finished difference Result 6416 states and 17436 transitions. [2021-06-05 08:02:24,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-06-05 08:02:24,518 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 4.933333333333334) internal successors, (148), 30 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 145 [2021-06-05 08:02:24,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:02:24,524 INFO L225 Difference]: With dead ends: 6416 [2021-06-05 08:02:24,524 INFO L226 Difference]: Without dead ends: 5841 [2021-06-05 08:02:24,525 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1924 ImplicationChecksByTransitivity, 1089.7ms TimeCoverageRelationStatistics Valid=1844, Invalid=4962, Unknown=0, NotChecked=0, Total=6806 [2021-06-05 08:02:24,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5841 states. [2021-06-05 08:02:24,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5841 to 3124. [2021-06-05 08:02:24,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3124 states, 3123 states have (on average 2.739673390970221) internal successors, (8556), 3123 states have internal predecessors, (8556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:24,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3124 states to 3124 states and 8556 transitions. [2021-06-05 08:02:24,566 INFO L78 Accepts]: Start accepts. Automaton has 3124 states and 8556 transitions. Word has length 145 [2021-06-05 08:02:24,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:02:24,566 INFO L482 AbstractCegarLoop]: Abstraction has 3124 states and 8556 transitions. [2021-06-05 08:02:24,566 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 4.933333333333334) internal successors, (148), 30 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:24,566 INFO L276 IsEmpty]: Start isEmpty. Operand 3124 states and 8556 transitions. [2021-06-05 08:02:24,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-06-05 08:02:24,569 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:02:24,569 INFO L521 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:02:24,769 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 274 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable278 [2021-06-05 08:02:24,769 INFO L430 AbstractCegarLoop]: === Iteration 280 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:02:24,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:02:24,769 INFO L82 PathProgramCache]: Analyzing trace with hash 652101711, now seen corresponding path program 271 times [2021-06-05 08:02:24,770 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:02:24,770 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826412684] [2021-06-05 08:02:24,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:02:24,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:02:25,070 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:25,070 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:02:25,070 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826412684] [2021-06-05 08:02:25,070 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826412684] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:25,070 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [200609257] [2021-06-05 08:02:25,070 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 275 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 275 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:02:25,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:02:25,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 31 conjunts are in the unsatisfiable core [2021-06-05 08:02:25,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:02:25,334 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:25,334 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [200609257] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:25,334 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:02:25,334 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 32 [2021-06-05 08:02:25,334 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803270557] [2021-06-05 08:02:25,334 INFO L462 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-06-05 08:02:25,334 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:02:25,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-06-05 08:02:25,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=770, Unknown=0, NotChecked=0, Total=992 [2021-06-05 08:02:25,335 INFO L87 Difference]: Start difference. First operand 3124 states and 8556 transitions. Second operand has 32 states, 32 states have (on average 5.5625) internal successors, (178), 32 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:25,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:02:25,918 INFO L93 Difference]: Finished difference Result 4364 states and 11356 transitions. [2021-06-05 08:02:25,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-06-05 08:02:25,918 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.5625) internal successors, (178), 32 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 150 [2021-06-05 08:02:25,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:02:25,923 INFO L225 Difference]: With dead ends: 4364 [2021-06-05 08:02:25,923 INFO L226 Difference]: Without dead ends: 4030 [2021-06-05 08:02:25,923 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 768 ImplicationChecksByTransitivity, 695.3ms TimeCoverageRelationStatistics Valid=1020, Invalid=2762, Unknown=0, NotChecked=0, Total=3782 [2021-06-05 08:02:25,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4030 states. [2021-06-05 08:02:25,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4030 to 3209. [2021-06-05 08:02:25,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3209 states, 3208 states have (on average 2.720074812967581) internal successors, (8726), 3208 states have internal predecessors, (8726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:25,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3209 states to 3209 states and 8726 transitions. [2021-06-05 08:02:25,958 INFO L78 Accepts]: Start accepts. Automaton has 3209 states and 8726 transitions. Word has length 150 [2021-06-05 08:02:25,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:02:25,958 INFO L482 AbstractCegarLoop]: Abstraction has 3209 states and 8726 transitions. [2021-06-05 08:02:25,958 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 5.5625) internal successors, (178), 32 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:25,958 INFO L276 IsEmpty]: Start isEmpty. Operand 3209 states and 8726 transitions. [2021-06-05 08:02:25,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-06-05 08:02:25,961 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:02:25,961 INFO L521 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:02:26,161 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 275 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable279 [2021-06-05 08:02:26,161 INFO L430 AbstractCegarLoop]: === Iteration 281 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:02:26,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:02:26,162 INFO L82 PathProgramCache]: Analyzing trace with hash 1417310995, now seen corresponding path program 272 times [2021-06-05 08:02:26,162 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:02:26,162 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127176481] [2021-06-05 08:02:26,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:02:26,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:02:26,441 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:26,442 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:02:26,442 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127176481] [2021-06-05 08:02:26,442 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127176481] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:26,442 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [421232142] [2021-06-05 08:02:26,442 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 276 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 276 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:02:26,503 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 08:02:26,503 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:02:26,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 30 conjunts are in the unsatisfiable core [2021-06-05 08:02:26,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:02:26,671 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:26,672 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [421232142] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:26,672 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:02:26,672 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 29 [2021-06-05 08:02:26,672 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488590749] [2021-06-05 08:02:26,672 INFO L462 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-06-05 08:02:26,672 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:02:26,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-06-05 08:02:26,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=624, Unknown=0, NotChecked=0, Total=812 [2021-06-05 08:02:26,672 INFO L87 Difference]: Start difference. First operand 3209 states and 8726 transitions. Second operand has 29 states, 29 states have (on average 5.172413793103448) internal successors, (150), 29 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:27,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:02:27,141 INFO L93 Difference]: Finished difference Result 5486 states and 13537 transitions. [2021-06-05 08:02:27,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-06-05 08:02:27,141 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 5.172413793103448) internal successors, (150), 29 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 150 [2021-06-05 08:02:27,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:02:27,146 INFO L225 Difference]: With dead ends: 5486 [2021-06-05 08:02:27,146 INFO L226 Difference]: Without dead ends: 5216 [2021-06-05 08:02:27,147 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 540 ImplicationChecksByTransitivity, 578.3ms TimeCoverageRelationStatistics Valid=854, Invalid=2226, Unknown=0, NotChecked=0, Total=3080 [2021-06-05 08:02:27,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5216 states. [2021-06-05 08:02:27,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5216 to 3353. [2021-06-05 08:02:27,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3353 states, 3352 states have (on average 2.7276252983293556) internal successors, (9143), 3352 states have internal predecessors, (9143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:27,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3353 states to 3353 states and 9143 transitions. [2021-06-05 08:02:27,203 INFO L78 Accepts]: Start accepts. Automaton has 3353 states and 9143 transitions. Word has length 150 [2021-06-05 08:02:27,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:02:27,204 INFO L482 AbstractCegarLoop]: Abstraction has 3353 states and 9143 transitions. [2021-06-05 08:02:27,204 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 5.172413793103448) internal successors, (150), 29 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:27,204 INFO L276 IsEmpty]: Start isEmpty. Operand 3353 states and 9143 transitions. [2021-06-05 08:02:27,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-06-05 08:02:27,206 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:02:27,206 INFO L521 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:02:27,406 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 276 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable280 [2021-06-05 08:02:27,407 INFO L430 AbstractCegarLoop]: === Iteration 282 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:02:27,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:02:27,407 INFO L82 PathProgramCache]: Analyzing trace with hash -1410972189, now seen corresponding path program 273 times [2021-06-05 08:02:27,407 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:02:27,407 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383934480] [2021-06-05 08:02:27,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:02:27,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:02:27,698 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:27,699 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:02:27,699 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383934480] [2021-06-05 08:02:27,699 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383934480] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:27,699 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [824778175] [2021-06-05 08:02:27,699 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 277 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 277 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:02:27,771 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2021-06-05 08:02:27,772 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:02:27,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 30 conjunts are in the unsatisfiable core [2021-06-05 08:02:27,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:02:27,985 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:27,985 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [824778175] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:27,985 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:02:27,985 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 30 [2021-06-05 08:02:27,985 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833750893] [2021-06-05 08:02:27,985 INFO L462 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-06-05 08:02:27,985 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:02:27,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-06-05 08:02:27,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=690, Unknown=0, NotChecked=0, Total=870 [2021-06-05 08:02:27,986 INFO L87 Difference]: Start difference. First operand 3353 states and 9143 transitions. Second operand has 30 states, 30 states have (on average 5.066666666666666) internal successors, (152), 30 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:28,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:02:28,531 INFO L93 Difference]: Finished difference Result 5446 states and 13532 transitions. [2021-06-05 08:02:28,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-06-05 08:02:28,532 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.066666666666666) internal successors, (152), 30 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 150 [2021-06-05 08:02:28,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:02:28,537 INFO L225 Difference]: With dead ends: 5446 [2021-06-05 08:02:28,537 INFO L226 Difference]: Without dead ends: 5176 [2021-06-05 08:02:28,538 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 629 ImplicationChecksByTransitivity, 660.8ms TimeCoverageRelationStatistics Valid=929, Invalid=2611, Unknown=0, NotChecked=0, Total=3540 [2021-06-05 08:02:28,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5176 states. [2021-06-05 08:02:28,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5176 to 3428. [2021-06-05 08:02:28,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3428 states, 3427 states have (on average 2.7335862270207176) internal successors, (9368), 3427 states have internal predecessors, (9368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:28,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3428 states to 3428 states and 9368 transitions. [2021-06-05 08:02:28,578 INFO L78 Accepts]: Start accepts. Automaton has 3428 states and 9368 transitions. Word has length 150 [2021-06-05 08:02:28,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:02:28,578 INFO L482 AbstractCegarLoop]: Abstraction has 3428 states and 9368 transitions. [2021-06-05 08:02:28,578 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 5.066666666666666) internal successors, (152), 30 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:28,578 INFO L276 IsEmpty]: Start isEmpty. Operand 3428 states and 9368 transitions. [2021-06-05 08:02:28,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-06-05 08:02:28,581 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:02:28,581 INFO L521 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:02:28,781 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable281,277 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:02:28,782 INFO L430 AbstractCegarLoop]: === Iteration 283 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:02:28,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:02:28,782 INFO L82 PathProgramCache]: Analyzing trace with hash -1546193583, now seen corresponding path program 274 times [2021-06-05 08:02:28,782 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:02:28,782 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710860207] [2021-06-05 08:02:28,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:02:28,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:02:29,058 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:29,059 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:02:29,059 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710860207] [2021-06-05 08:02:29,059 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710860207] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:29,059 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [831121387] [2021-06-05 08:02:29,059 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 278 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 278 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:02:29,120 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 08:02:29,120 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:02:29,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 30 conjunts are in the unsatisfiable core [2021-06-05 08:02:29,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:02:29,290 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:29,291 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [831121387] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:29,291 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:02:29,291 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 29 [2021-06-05 08:02:29,291 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332484378] [2021-06-05 08:02:29,291 INFO L462 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-06-05 08:02:29,291 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:02:29,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-06-05 08:02:29,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=644, Unknown=0, NotChecked=0, Total=812 [2021-06-05 08:02:29,291 INFO L87 Difference]: Start difference. First operand 3428 states and 9368 transitions. Second operand has 29 states, 29 states have (on average 5.172413793103448) internal successors, (150), 29 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:29,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:02:29,823 INFO L93 Difference]: Finished difference Result 5496 states and 13707 transitions. [2021-06-05 08:02:29,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-05 08:02:29,823 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 5.172413793103448) internal successors, (150), 29 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 150 [2021-06-05 08:02:29,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:02:29,828 INFO L225 Difference]: With dead ends: 5496 [2021-06-05 08:02:29,828 INFO L226 Difference]: Without dead ends: 5226 [2021-06-05 08:02:29,828 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 616 ImplicationChecksByTransitivity, 614.4ms TimeCoverageRelationStatistics Valid=855, Invalid=2451, Unknown=0, NotChecked=0, Total=3306 [2021-06-05 08:02:29,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5226 states. [2021-06-05 08:02:29,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5226 to 3503. [2021-06-05 08:02:29,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3503 states, 3502 states have (on average 2.7392918332381497) internal successors, (9593), 3502 states have internal predecessors, (9593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:29,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3503 states to 3503 states and 9593 transitions. [2021-06-05 08:02:29,868 INFO L78 Accepts]: Start accepts. Automaton has 3503 states and 9593 transitions. Word has length 150 [2021-06-05 08:02:29,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:02:29,868 INFO L482 AbstractCegarLoop]: Abstraction has 3503 states and 9593 transitions. [2021-06-05 08:02:29,868 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 5.172413793103448) internal successors, (150), 29 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:29,868 INFO L276 IsEmpty]: Start isEmpty. Operand 3503 states and 9593 transitions. [2021-06-05 08:02:29,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-06-05 08:02:29,871 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:02:29,871 INFO L521 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:02:30,072 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 278 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable282 [2021-06-05 08:02:30,072 INFO L430 AbstractCegarLoop]: === Iteration 284 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:02:30,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:02:30,072 INFO L82 PathProgramCache]: Analyzing trace with hash 1872038945, now seen corresponding path program 275 times [2021-06-05 08:02:30,072 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:02:30,072 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971383916] [2021-06-05 08:02:30,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:02:30,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:02:30,351 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:30,352 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:02:30,352 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971383916] [2021-06-05 08:02:30,352 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971383916] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:30,352 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1062254907] [2021-06-05 08:02:30,352 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 279 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 279 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:02:30,417 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2021-06-05 08:02:30,417 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:02:30,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 30 conjunts are in the unsatisfiable core [2021-06-05 08:02:30,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:02:30,601 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:30,602 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1062254907] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:30,602 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:02:30,602 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 30 [2021-06-05 08:02:30,602 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058368829] [2021-06-05 08:02:30,602 INFO L462 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-06-05 08:02:30,602 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:02:30,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-06-05 08:02:30,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=709, Unknown=0, NotChecked=0, Total=870 [2021-06-05 08:02:30,602 INFO L87 Difference]: Start difference. First operand 3503 states and 9593 transitions. Second operand has 30 states, 30 states have (on average 5.066666666666666) internal successors, (152), 30 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:31,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:02:31,267 INFO L93 Difference]: Finished difference Result 5521 states and 13832 transitions. [2021-06-05 08:02:31,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-05 08:02:31,267 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.066666666666666) internal successors, (152), 30 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 150 [2021-06-05 08:02:31,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:02:31,272 INFO L225 Difference]: With dead ends: 5521 [2021-06-05 08:02:31,272 INFO L226 Difference]: Without dead ends: 5251 [2021-06-05 08:02:31,273 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 711 ImplicationChecksByTransitivity, 694.0ms TimeCoverageRelationStatistics Valid=938, Invalid=2844, Unknown=0, NotChecked=0, Total=3782 [2021-06-05 08:02:31,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5251 states. [2021-06-05 08:02:31,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5251 to 3578. [2021-06-05 08:02:31,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3578 states, 3577 states have (on average 2.7447581772435004) internal successors, (9818), 3577 states have internal predecessors, (9818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:31,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3578 states to 3578 states and 9818 transitions. [2021-06-05 08:02:31,312 INFO L78 Accepts]: Start accepts. Automaton has 3578 states and 9818 transitions. Word has length 150 [2021-06-05 08:02:31,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:02:31,312 INFO L482 AbstractCegarLoop]: Abstraction has 3578 states and 9818 transitions. [2021-06-05 08:02:31,312 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 5.066666666666666) internal successors, (152), 30 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:31,312 INFO L276 IsEmpty]: Start isEmpty. Operand 3578 states and 9818 transitions. [2021-06-05 08:02:31,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-06-05 08:02:31,315 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:02:31,315 INFO L521 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:02:31,515 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable283,279 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:02:31,516 INFO L430 AbstractCegarLoop]: === Iteration 285 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:02:31,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:02:31,516 INFO L82 PathProgramCache]: Analyzing trace with hash 134712591, now seen corresponding path program 276 times [2021-06-05 08:02:31,516 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:02:31,516 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470552038] [2021-06-05 08:02:31,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:02:31,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:02:31,773 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:31,774 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:02:31,774 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470552038] [2021-06-05 08:02:31,774 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470552038] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:31,774 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1742672661] [2021-06-05 08:02:31,774 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 280 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 280 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:02:31,846 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2021-06-05 08:02:31,847 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:02:31,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 30 conjunts are in the unsatisfiable core [2021-06-05 08:02:31,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:02:32,036 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:32,037 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1742672661] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:32,037 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:02:32,037 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 29 [2021-06-05 08:02:32,037 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156677844] [2021-06-05 08:02:32,037 INFO L462 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-06-05 08:02:32,037 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:02:32,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-06-05 08:02:32,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=660, Unknown=0, NotChecked=0, Total=812 [2021-06-05 08:02:32,038 INFO L87 Difference]: Start difference. First operand 3578 states and 9818 transitions. Second operand has 29 states, 29 states have (on average 5.172413793103448) internal successors, (150), 29 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:32,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:02:32,611 INFO L93 Difference]: Finished difference Result 5546 states and 13957 transitions. [2021-06-05 08:02:32,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-06-05 08:02:32,611 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 5.172413793103448) internal successors, (150), 29 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 150 [2021-06-05 08:02:32,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:02:32,617 INFO L225 Difference]: With dead ends: 5546 [2021-06-05 08:02:32,617 INFO L226 Difference]: Without dead ends: 5276 [2021-06-05 08:02:32,617 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 696 ImplicationChecksByTransitivity, 631.4ms TimeCoverageRelationStatistics Valid=872, Invalid=2668, Unknown=0, NotChecked=0, Total=3540 [2021-06-05 08:02:32,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5276 states. [2021-06-05 08:02:32,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5276 to 3653. [2021-06-05 08:02:32,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3653 states, 3652 states have (on average 2.75) internal successors, (10043), 3652 states have internal predecessors, (10043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:32,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3653 states to 3653 states and 10043 transitions. [2021-06-05 08:02:32,663 INFO L78 Accepts]: Start accepts. Automaton has 3653 states and 10043 transitions. Word has length 150 [2021-06-05 08:02:32,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:02:32,663 INFO L482 AbstractCegarLoop]: Abstraction has 3653 states and 10043 transitions. [2021-06-05 08:02:32,663 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 5.172413793103448) internal successors, (150), 29 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:32,664 INFO L276 IsEmpty]: Start isEmpty. Operand 3653 states and 10043 transitions. [2021-06-05 08:02:32,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-06-05 08:02:32,667 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:02:32,667 INFO L521 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:02:32,867 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable284,280 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:02:32,867 INFO L430 AbstractCegarLoop]: === Iteration 286 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:02:32,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:02:32,868 INFO L82 PathProgramCache]: Analyzing trace with hash 1499260895, now seen corresponding path program 277 times [2021-06-05 08:02:32,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:02:32,868 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122909436] [2021-06-05 08:02:32,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:02:32,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:02:33,150 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:33,150 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:02:33,150 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122909436] [2021-06-05 08:02:33,150 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122909436] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:33,150 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1827312633] [2021-06-05 08:02:33,150 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 281 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 281 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:02:33,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:02:33,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 30 conjunts are in the unsatisfiable core [2021-06-05 08:02:33,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:02:33,395 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:33,395 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1827312633] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:33,395 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:02:33,395 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 30 [2021-06-05 08:02:33,395 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994132063] [2021-06-05 08:02:33,396 INFO L462 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-06-05 08:02:33,396 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:02:33,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-06-05 08:02:33,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=724, Unknown=0, NotChecked=0, Total=870 [2021-06-05 08:02:33,396 INFO L87 Difference]: Start difference. First operand 3653 states and 10043 transitions. Second operand has 30 states, 30 states have (on average 5.066666666666666) internal successors, (152), 30 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:34,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:02:34,067 INFO L93 Difference]: Finished difference Result 5571 states and 14082 transitions. [2021-06-05 08:02:34,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-06-05 08:02:34,067 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.066666666666666) internal successors, (152), 30 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 150 [2021-06-05 08:02:34,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:02:34,073 INFO L225 Difference]: With dead ends: 5571 [2021-06-05 08:02:34,073 INFO L226 Difference]: Without dead ends: 5301 [2021-06-05 08:02:34,073 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 798 ImplicationChecksByTransitivity, 737.1ms TimeCoverageRelationStatistics Valid=963, Invalid=3069, Unknown=0, NotChecked=0, Total=4032 [2021-06-05 08:02:34,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5301 states. [2021-06-05 08:02:34,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5301 to 3728. [2021-06-05 08:02:34,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3728 states, 3727 states have (on average 2.7550308559162864) internal successors, (10268), 3727 states have internal predecessors, (10268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:34,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3728 states to 3728 states and 10268 transitions. [2021-06-05 08:02:34,120 INFO L78 Accepts]: Start accepts. Automaton has 3728 states and 10268 transitions. Word has length 150 [2021-06-05 08:02:34,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:02:34,120 INFO L482 AbstractCegarLoop]: Abstraction has 3728 states and 10268 transitions. [2021-06-05 08:02:34,120 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 5.066666666666666) internal successors, (152), 30 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:34,120 INFO L276 IsEmpty]: Start isEmpty. Operand 3728 states and 10268 transitions. [2021-06-05 08:02:34,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-06-05 08:02:34,123 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:02:34,123 INFO L521 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:02:34,324 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable285,281 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:02:34,324 INFO L430 AbstractCegarLoop]: === Iteration 287 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:02:34,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:02:34,324 INFO L82 PathProgramCache]: Analyzing trace with hash -777971123, now seen corresponding path program 278 times [2021-06-05 08:02:34,324 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:02:34,324 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686457047] [2021-06-05 08:02:34,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:02:34,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:02:34,604 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:34,604 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:02:34,604 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686457047] [2021-06-05 08:02:34,605 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686457047] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:34,605 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [887339394] [2021-06-05 08:02:34,605 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 282 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 282 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:02:34,667 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 08:02:34,667 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:02:34,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 30 conjunts are in the unsatisfiable core [2021-06-05 08:02:34,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:02:34,832 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:34,833 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [887339394] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:34,833 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:02:34,833 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 29 [2021-06-05 08:02:34,833 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290666176] [2021-06-05 08:02:34,833 INFO L462 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-06-05 08:02:34,833 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:02:34,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-06-05 08:02:34,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=672, Unknown=0, NotChecked=0, Total=812 [2021-06-05 08:02:34,834 INFO L87 Difference]: Start difference. First operand 3728 states and 10268 transitions. Second operand has 29 states, 29 states have (on average 5.172413793103448) internal successors, (150), 29 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:35,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:02:35,430 INFO L93 Difference]: Finished difference Result 5596 states and 14207 transitions. [2021-06-05 08:02:35,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-05 08:02:35,430 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 5.172413793103448) internal successors, (150), 29 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 150 [2021-06-05 08:02:35,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:02:35,436 INFO L225 Difference]: With dead ends: 5596 [2021-06-05 08:02:35,436 INFO L226 Difference]: Without dead ends: 5326 [2021-06-05 08:02:35,437 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 780 ImplicationChecksByTransitivity, 650.8ms TimeCoverageRelationStatistics Valid=905, Invalid=2877, Unknown=0, NotChecked=0, Total=3782 [2021-06-05 08:02:35,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5326 states. [2021-06-05 08:02:35,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5326 to 3803. [2021-06-05 08:02:35,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3803 states, 3802 states have (on average 2.759863229879011) internal successors, (10493), 3802 states have internal predecessors, (10493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:35,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3803 states to 3803 states and 10493 transitions. [2021-06-05 08:02:35,487 INFO L78 Accepts]: Start accepts. Automaton has 3803 states and 10493 transitions. Word has length 150 [2021-06-05 08:02:35,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:02:35,487 INFO L482 AbstractCegarLoop]: Abstraction has 3803 states and 10493 transitions. [2021-06-05 08:02:35,487 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 5.172413793103448) internal successors, (150), 29 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:35,487 INFO L276 IsEmpty]: Start isEmpty. Operand 3803 states and 10493 transitions. [2021-06-05 08:02:35,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-06-05 08:02:35,490 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:02:35,490 INFO L521 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:02:35,691 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable286,282 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:02:35,691 INFO L430 AbstractCegarLoop]: === Iteration 288 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:02:35,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:02:35,691 INFO L82 PathProgramCache]: Analyzing trace with hash -1676494563, now seen corresponding path program 279 times [2021-06-05 08:02:35,691 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:02:35,691 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784824871] [2021-06-05 08:02:35,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:02:35,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:02:35,950 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:35,950 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:02:35,950 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784824871] [2021-06-05 08:02:35,950 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784824871] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:35,950 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2015521291] [2021-06-05 08:02:35,950 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 283 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 283 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:02:36,023 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2021-06-05 08:02:36,023 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:02:36,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 30 conjunts are in the unsatisfiable core [2021-06-05 08:02:36,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:02:36,204 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:36,204 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2015521291] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:36,204 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:02:36,204 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 30 [2021-06-05 08:02:36,204 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031079605] [2021-06-05 08:02:36,204 INFO L462 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-06-05 08:02:36,204 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:02:36,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-06-05 08:02:36,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=735, Unknown=0, NotChecked=0, Total=870 [2021-06-05 08:02:36,205 INFO L87 Difference]: Start difference. First operand 3803 states and 10493 transitions. Second operand has 30 states, 30 states have (on average 5.066666666666666) internal successors, (152), 30 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:36,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:02:36,939 INFO L93 Difference]: Finished difference Result 5621 states and 14332 transitions. [2021-06-05 08:02:36,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-05 08:02:36,939 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.066666666666666) internal successors, (152), 30 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 150 [2021-06-05 08:02:36,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:02:36,944 INFO L225 Difference]: With dead ends: 5621 [2021-06-05 08:02:36,944 INFO L226 Difference]: Without dead ends: 5351 [2021-06-05 08:02:36,944 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 889 ImplicationChecksByTransitivity, 785.5ms TimeCoverageRelationStatistics Valid=1004, Invalid=3286, Unknown=0, NotChecked=0, Total=4290 [2021-06-05 08:02:36,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5351 states. [2021-06-05 08:02:36,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5351 to 3878. [2021-06-05 08:02:36,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3878 states, 3877 states have (on average 2.7645086407015733) internal successors, (10718), 3877 states have internal predecessors, (10718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:36,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3878 states to 3878 states and 10718 transitions. [2021-06-05 08:02:36,991 INFO L78 Accepts]: Start accepts. Automaton has 3878 states and 10718 transitions. Word has length 150 [2021-06-05 08:02:36,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:02:36,991 INFO L482 AbstractCegarLoop]: Abstraction has 3878 states and 10718 transitions. [2021-06-05 08:02:36,991 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 5.066666666666666) internal successors, (152), 30 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:36,991 INFO L276 IsEmpty]: Start isEmpty. Operand 3878 states and 10718 transitions. [2021-06-05 08:02:36,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-06-05 08:02:36,994 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:02:36,994 INFO L521 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:02:37,195 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 283 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable287 [2021-06-05 08:02:37,195 INFO L430 AbstractCegarLoop]: === Iteration 289 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:02:37,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:02:37,195 INFO L82 PathProgramCache]: Analyzing trace with hash 1003519243, now seen corresponding path program 280 times [2021-06-05 08:02:37,195 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:02:37,195 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397264761] [2021-06-05 08:02:37,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:02:37,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:02:37,439 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:37,439 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:02:37,439 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397264761] [2021-06-05 08:02:37,439 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397264761] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:37,439 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1015480746] [2021-06-05 08:02:37,440 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 284 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 284 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:02:37,502 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 08:02:37,502 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:02:37,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 30 conjunts are in the unsatisfiable core [2021-06-05 08:02:37,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:02:37,666 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:37,666 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1015480746] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:37,666 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:02:37,666 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 29 [2021-06-05 08:02:37,666 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915893967] [2021-06-05 08:02:37,667 INFO L462 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-06-05 08:02:37,667 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:02:37,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-06-05 08:02:37,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=680, Unknown=0, NotChecked=0, Total=812 [2021-06-05 08:02:37,667 INFO L87 Difference]: Start difference. First operand 3878 states and 10718 transitions. Second operand has 29 states, 29 states have (on average 5.172413793103448) internal successors, (150), 29 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:38,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:02:38,352 INFO L93 Difference]: Finished difference Result 5646 states and 14457 transitions. [2021-06-05 08:02:38,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-05 08:02:38,352 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 5.172413793103448) internal successors, (150), 29 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 150 [2021-06-05 08:02:38,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:02:38,358 INFO L225 Difference]: With dead ends: 5646 [2021-06-05 08:02:38,358 INFO L226 Difference]: Without dead ends: 5376 [2021-06-05 08:02:38,359 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 868 ImplicationChecksByTransitivity, 673.0ms TimeCoverageRelationStatistics Valid=954, Invalid=3078, Unknown=0, NotChecked=0, Total=4032 [2021-06-05 08:02:38,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5376 states. [2021-06-05 08:02:38,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5376 to 3953. [2021-06-05 08:02:38,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3953 states, 3952 states have (on average 2.7689777327935223) internal successors, (10943), 3952 states have internal predecessors, (10943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:38,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3953 states to 3953 states and 10943 transitions. [2021-06-05 08:02:38,409 INFO L78 Accepts]: Start accepts. Automaton has 3953 states and 10943 transitions. Word has length 150 [2021-06-05 08:02:38,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:02:38,409 INFO L482 AbstractCegarLoop]: Abstraction has 3953 states and 10943 transitions. [2021-06-05 08:02:38,410 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 5.172413793103448) internal successors, (150), 29 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:38,410 INFO L276 IsEmpty]: Start isEmpty. Operand 3953 states and 10943 transitions. [2021-06-05 08:02:38,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-06-05 08:02:38,413 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:02:38,413 INFO L521 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:02:38,616 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 284 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable288 [2021-06-05 08:02:38,616 INFO L430 AbstractCegarLoop]: === Iteration 290 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:02:38,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:02:38,617 INFO L82 PathProgramCache]: Analyzing trace with hash 623075291, now seen corresponding path program 281 times [2021-06-05 08:02:38,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:02:38,617 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276120145] [2021-06-05 08:02:38,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:02:38,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:02:38,874 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:38,875 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:02:38,875 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276120145] [2021-06-05 08:02:38,875 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276120145] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:38,875 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1873275465] [2021-06-05 08:02:38,875 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 285 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 285 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:02:38,941 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2021-06-05 08:02:38,941 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:02:38,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 30 conjunts are in the unsatisfiable core [2021-06-05 08:02:38,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:02:39,118 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:39,118 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1873275465] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:39,118 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:02:39,119 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 30 [2021-06-05 08:02:39,119 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058042717] [2021-06-05 08:02:39,119 INFO L462 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-06-05 08:02:39,119 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:02:39,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-06-05 08:02:39,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=742, Unknown=0, NotChecked=0, Total=870 [2021-06-05 08:02:39,119 INFO L87 Difference]: Start difference. First operand 3953 states and 10943 transitions. Second operand has 30 states, 30 states have (on average 5.066666666666666) internal successors, (152), 30 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:39,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:02:39,930 INFO L93 Difference]: Finished difference Result 5671 states and 14582 transitions. [2021-06-05 08:02:39,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-06-05 08:02:39,930 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.066666666666666) internal successors, (152), 30 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 150 [2021-06-05 08:02:39,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:02:39,936 INFO L225 Difference]: With dead ends: 5671 [2021-06-05 08:02:39,936 INFO L226 Difference]: Without dead ends: 5401 [2021-06-05 08:02:39,937 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 984 ImplicationChecksByTransitivity, 805.5ms TimeCoverageRelationStatistics Valid=1061, Invalid=3495, Unknown=0, NotChecked=0, Total=4556 [2021-06-05 08:02:39,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5401 states. [2021-06-05 08:02:39,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5401 to 4028. [2021-06-05 08:02:39,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4028 states, 4027 states have (on average 2.7732803575862923) internal successors, (11168), 4027 states have internal predecessors, (11168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:39,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4028 states to 4028 states and 11168 transitions. [2021-06-05 08:02:39,986 INFO L78 Accepts]: Start accepts. Automaton has 4028 states and 11168 transitions. Word has length 150 [2021-06-05 08:02:39,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:02:39,986 INFO L482 AbstractCegarLoop]: Abstraction has 4028 states and 11168 transitions. [2021-06-05 08:02:39,986 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 5.066666666666666) internal successors, (152), 30 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:39,986 INFO L276 IsEmpty]: Start isEmpty. Operand 4028 states and 11168 transitions. [2021-06-05 08:02:39,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-06-05 08:02:39,989 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:02:39,989 INFO L521 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:02:40,190 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 285 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable289 [2021-06-05 08:02:40,190 INFO L430 AbstractCegarLoop]: === Iteration 291 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:02:40,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:02:40,190 INFO L82 PathProgramCache]: Analyzing trace with hash 1247450441, now seen corresponding path program 282 times [2021-06-05 08:02:40,191 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:02:40,191 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049704872] [2021-06-05 08:02:40,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:02:40,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:02:40,436 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:40,436 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:02:40,436 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049704872] [2021-06-05 08:02:40,436 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049704872] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:40,436 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1321108114] [2021-06-05 08:02:40,436 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 286 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 286 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:02:40,507 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2021-06-05 08:02:40,507 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:02:40,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 30 conjunts are in the unsatisfiable core [2021-06-05 08:02:40,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:02:40,670 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:40,670 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1321108114] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:40,670 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:02:40,670 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 29 [2021-06-05 08:02:40,670 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381479682] [2021-06-05 08:02:40,670 INFO L462 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-06-05 08:02:40,671 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:02:40,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-06-05 08:02:40,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=684, Unknown=0, NotChecked=0, Total=812 [2021-06-05 08:02:40,671 INFO L87 Difference]: Start difference. First operand 4028 states and 11168 transitions. Second operand has 29 states, 29 states have (on average 5.172413793103448) internal successors, (150), 29 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:41,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:02:41,424 INFO L93 Difference]: Finished difference Result 5696 states and 14707 transitions. [2021-06-05 08:02:41,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-05 08:02:41,424 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 5.172413793103448) internal successors, (150), 29 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 150 [2021-06-05 08:02:41,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:02:41,430 INFO L225 Difference]: With dead ends: 5696 [2021-06-05 08:02:41,430 INFO L226 Difference]: Without dead ends: 5426 [2021-06-05 08:02:41,430 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 960 ImplicationChecksByTransitivity, 697.8ms TimeCoverageRelationStatistics Valid=1019, Invalid=3271, Unknown=0, NotChecked=0, Total=4290 [2021-06-05 08:02:41,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5426 states. [2021-06-05 08:02:41,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5426 to 4103. [2021-06-05 08:02:41,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4103 states, 4102 states have (on average 2.7774256460263285) internal successors, (11393), 4102 states have internal predecessors, (11393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:41,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4103 states to 4103 states and 11393 transitions. [2021-06-05 08:02:41,483 INFO L78 Accepts]: Start accepts. Automaton has 4103 states and 11393 transitions. Word has length 150 [2021-06-05 08:02:41,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:02:41,483 INFO L482 AbstractCegarLoop]: Abstraction has 4103 states and 11393 transitions. [2021-06-05 08:02:41,483 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 5.172413793103448) internal successors, (150), 29 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:41,483 INFO L276 IsEmpty]: Start isEmpty. Operand 4103 states and 11393 transitions. [2021-06-05 08:02:41,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-06-05 08:02:41,487 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:02:41,487 INFO L521 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:02:41,687 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable290,286 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:02:41,687 INFO L430 AbstractCegarLoop]: === Iteration 292 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:02:41,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:02:41,688 INFO L82 PathProgramCache]: Analyzing trace with hash 2056502297, now seen corresponding path program 283 times [2021-06-05 08:02:41,688 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:02:41,688 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875705546] [2021-06-05 08:02:41,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:02:41,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:02:41,956 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:41,956 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:02:41,956 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875705546] [2021-06-05 08:02:41,956 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875705546] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:41,956 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [370403028] [2021-06-05 08:02:41,956 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 287 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 287 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:02:42,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:02:42,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 30 conjunts are in the unsatisfiable core [2021-06-05 08:02:42,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:02:42,189 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:42,189 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [370403028] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:42,189 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:02:42,190 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 30 [2021-06-05 08:02:42,190 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399038326] [2021-06-05 08:02:42,192 INFO L462 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-06-05 08:02:42,193 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:02:42,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-06-05 08:02:42,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=745, Unknown=0, NotChecked=0, Total=870 [2021-06-05 08:02:42,193 INFO L87 Difference]: Start difference. First operand 4103 states and 11393 transitions. Second operand has 30 states, 30 states have (on average 5.066666666666666) internal successors, (152), 30 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:43,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:02:43,079 INFO L93 Difference]: Finished difference Result 5721 states and 14832 transitions. [2021-06-05 08:02:43,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-06-05 08:02:43,079 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.066666666666666) internal successors, (152), 30 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 150 [2021-06-05 08:02:43,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:02:43,085 INFO L225 Difference]: With dead ends: 5721 [2021-06-05 08:02:43,085 INFO L226 Difference]: Without dead ends: 5451 [2021-06-05 08:02:43,086 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1083 ImplicationChecksByTransitivity, 847.1ms TimeCoverageRelationStatistics Valid=1134, Invalid=3696, Unknown=0, NotChecked=0, Total=4830 [2021-06-05 08:02:43,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5451 states. [2021-06-05 08:02:43,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5451 to 4178. [2021-06-05 08:02:43,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4178 states, 4177 states have (on average 2.7814220732583195) internal successors, (11618), 4177 states have internal predecessors, (11618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:43,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4178 states to 4178 states and 11618 transitions. [2021-06-05 08:02:43,139 INFO L78 Accepts]: Start accepts. Automaton has 4178 states and 11618 transitions. Word has length 150 [2021-06-05 08:02:43,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:02:43,139 INFO L482 AbstractCegarLoop]: Abstraction has 4178 states and 11618 transitions. [2021-06-05 08:02:43,139 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 5.066666666666666) internal successors, (152), 30 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:43,139 INFO L276 IsEmpty]: Start isEmpty. Operand 4178 states and 11618 transitions. [2021-06-05 08:02:43,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-06-05 08:02:43,142 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:02:43,142 INFO L521 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:02:43,342 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable291,287 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:02:43,343 INFO L430 AbstractCegarLoop]: === Iteration 293 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:02:43,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:02:43,343 INFO L82 PathProgramCache]: Analyzing trace with hash 664552199, now seen corresponding path program 284 times [2021-06-05 08:02:43,343 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:02:43,343 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822890041] [2021-06-05 08:02:43,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:02:43,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:02:43,627 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:43,627 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:02:43,627 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822890041] [2021-06-05 08:02:43,627 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822890041] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:43,627 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [25556150] [2021-06-05 08:02:43,627 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 288 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 288 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:02:43,698 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 08:02:43,698 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:02:43,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 30 conjunts are in the unsatisfiable core [2021-06-05 08:02:43,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:02:43,859 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:43,859 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [25556150] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:43,859 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:02:43,859 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 29 [2021-06-05 08:02:43,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54534579] [2021-06-05 08:02:43,859 INFO L462 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-06-05 08:02:43,859 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:02:43,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-06-05 08:02:43,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=684, Unknown=0, NotChecked=0, Total=812 [2021-06-05 08:02:43,860 INFO L87 Difference]: Start difference. First operand 4178 states and 11618 transitions. Second operand has 29 states, 29 states have (on average 5.172413793103448) internal successors, (150), 29 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:44,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:02:44,588 INFO L93 Difference]: Finished difference Result 5746 states and 14957 transitions. [2021-06-05 08:02:44,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-05 08:02:44,589 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 5.172413793103448) internal successors, (150), 29 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 150 [2021-06-05 08:02:44,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:02:44,595 INFO L225 Difference]: With dead ends: 5746 [2021-06-05 08:02:44,595 INFO L226 Difference]: Without dead ends: 5476 [2021-06-05 08:02:44,596 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1056 ImplicationChecksByTransitivity, 778.2ms TimeCoverageRelationStatistics Valid=1100, Invalid=3456, Unknown=0, NotChecked=0, Total=4556 [2021-06-05 08:02:44,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5476 states. [2021-06-05 08:02:44,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5476 to 4253. [2021-06-05 08:02:44,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4253 states, 4252 states have (on average 2.785277516462841) internal successors, (11843), 4252 states have internal predecessors, (11843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:44,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4253 states to 4253 states and 11843 transitions. [2021-06-05 08:02:44,648 INFO L78 Accepts]: Start accepts. Automaton has 4253 states and 11843 transitions. Word has length 150 [2021-06-05 08:02:44,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:02:44,648 INFO L482 AbstractCegarLoop]: Abstraction has 4253 states and 11843 transitions. [2021-06-05 08:02:44,649 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 5.172413793103448) internal successors, (150), 29 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:44,649 INFO L276 IsEmpty]: Start isEmpty. Operand 4253 states and 11843 transitions. [2021-06-05 08:02:44,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-06-05 08:02:44,652 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:02:44,652 INFO L521 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:02:44,852 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable292,288 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:02:44,853 INFO L430 AbstractCegarLoop]: === Iteration 294 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:02:44,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:02:44,853 INFO L82 PathProgramCache]: Analyzing trace with hash 419474903, now seen corresponding path program 285 times [2021-06-05 08:02:44,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:02:44,853 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325042295] [2021-06-05 08:02:44,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:02:44,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:02:45,094 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:45,094 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:02:45,094 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325042295] [2021-06-05 08:02:45,094 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325042295] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:45,094 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1472433774] [2021-06-05 08:02:45,094 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 289 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 289 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:02:45,166 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2021-06-05 08:02:45,166 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:02:45,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 30 conjunts are in the unsatisfiable core [2021-06-05 08:02:45,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:02:45,338 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:45,338 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1472433774] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:45,338 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:02:45,338 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 30 [2021-06-05 08:02:45,338 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478379944] [2021-06-05 08:02:45,338 INFO L462 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-06-05 08:02:45,338 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:02:45,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-06-05 08:02:45,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=744, Unknown=0, NotChecked=0, Total=870 [2021-06-05 08:02:45,339 INFO L87 Difference]: Start difference. First operand 4253 states and 11843 transitions. Second operand has 30 states, 30 states have (on average 5.066666666666666) internal successors, (152), 30 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:46,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:02:46,241 INFO L93 Difference]: Finished difference Result 5771 states and 15082 transitions. [2021-06-05 08:02:46,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-06-05 08:02:46,241 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.066666666666666) internal successors, (152), 30 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 150 [2021-06-05 08:02:46,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:02:46,247 INFO L225 Difference]: With dead ends: 5771 [2021-06-05 08:02:46,247 INFO L226 Difference]: Without dead ends: 5501 [2021-06-05 08:02:46,248 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1186 ImplicationChecksByTransitivity, 897.3ms TimeCoverageRelationStatistics Valid=1223, Invalid=3889, Unknown=0, NotChecked=0, Total=5112 [2021-06-05 08:02:46,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5501 states. [2021-06-05 08:02:46,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5501 to 4328. [2021-06-05 08:02:46,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4328 states, 4327 states have (on average 2.7889993066789924) internal successors, (12068), 4327 states have internal predecessors, (12068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:46,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4328 states to 4328 states and 12068 transitions. [2021-06-05 08:02:46,303 INFO L78 Accepts]: Start accepts. Automaton has 4328 states and 12068 transitions. Word has length 150 [2021-06-05 08:02:46,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:02:46,304 INFO L482 AbstractCegarLoop]: Abstraction has 4328 states and 12068 transitions. [2021-06-05 08:02:46,304 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 5.066666666666666) internal successors, (152), 30 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:46,304 INFO L276 IsEmpty]: Start isEmpty. Operand 4328 states and 12068 transitions. [2021-06-05 08:02:46,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-06-05 08:02:46,307 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:02:46,307 INFO L521 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:02:46,508 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable293,289 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:02:46,508 INFO L430 AbstractCegarLoop]: === Iteration 295 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:02:46,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:02:46,508 INFO L82 PathProgramCache]: Analyzing trace with hash 42624581, now seen corresponding path program 286 times [2021-06-05 08:02:46,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:02:46,509 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336671706] [2021-06-05 08:02:46,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:02:46,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:02:46,761 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:46,761 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:02:46,761 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336671706] [2021-06-05 08:02:46,761 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336671706] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:46,761 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1745675573] [2021-06-05 08:02:46,761 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 290 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 290 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:02:46,822 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 08:02:46,823 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:02:46,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 30 conjunts are in the unsatisfiable core [2021-06-05 08:02:46,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:02:46,981 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:46,981 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1745675573] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:46,981 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:02:46,981 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 29 [2021-06-05 08:02:46,981 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348050174] [2021-06-05 08:02:46,981 INFO L462 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-06-05 08:02:46,982 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:02:46,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-06-05 08:02:46,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=680, Unknown=0, NotChecked=0, Total=812 [2021-06-05 08:02:46,982 INFO L87 Difference]: Start difference. First operand 4328 states and 12068 transitions. Second operand has 29 states, 29 states have (on average 5.172413793103448) internal successors, (150), 29 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:47,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:02:47,734 INFO L93 Difference]: Finished difference Result 5796 states and 15207 transitions. [2021-06-05 08:02:47,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-06-05 08:02:47,734 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 5.172413793103448) internal successors, (150), 29 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 150 [2021-06-05 08:02:47,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:02:47,741 INFO L225 Difference]: With dead ends: 5796 [2021-06-05 08:02:47,741 INFO L226 Difference]: Without dead ends: 5526 [2021-06-05 08:02:47,741 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1156 ImplicationChecksByTransitivity, 772.7ms TimeCoverageRelationStatistics Valid=1197, Invalid=3633, Unknown=0, NotChecked=0, Total=4830 [2021-06-05 08:02:47,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5526 states. [2021-06-05 08:02:47,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5526 to 4403. [2021-06-05 08:02:47,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4403 states, 4402 states have (on average 2.7925942753293955) internal successors, (12293), 4402 states have internal predecessors, (12293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:47,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4403 states to 4403 states and 12293 transitions. [2021-06-05 08:02:47,796 INFO L78 Accepts]: Start accepts. Automaton has 4403 states and 12293 transitions. Word has length 150 [2021-06-05 08:02:47,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:02:47,796 INFO L482 AbstractCegarLoop]: Abstraction has 4403 states and 12293 transitions. [2021-06-05 08:02:47,797 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 5.172413793103448) internal successors, (150), 29 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:47,797 INFO L276 IsEmpty]: Start isEmpty. Operand 4403 states and 12293 transitions. [2021-06-05 08:02:47,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-06-05 08:02:47,800 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:02:47,800 INFO L521 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:02:48,000 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable294,290 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:02:48,001 INFO L430 AbstractCegarLoop]: === Iteration 296 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:02:48,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:02:48,001 INFO L82 PathProgramCache]: Analyzing trace with hash 1369380117, now seen corresponding path program 287 times [2021-06-05 08:02:48,001 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:02:48,001 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760671929] [2021-06-05 08:02:48,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:02:48,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:02:48,235 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:48,235 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:02:48,235 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760671929] [2021-06-05 08:02:48,235 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760671929] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:48,235 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [893409895] [2021-06-05 08:02:48,235 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 291 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 291 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:02:48,300 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2021-06-05 08:02:48,300 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:02:48,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 30 conjunts are in the unsatisfiable core [2021-06-05 08:02:48,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:02:48,486 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:48,486 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [893409895] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:48,486 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:02:48,486 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 30 [2021-06-05 08:02:48,486 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041581297] [2021-06-05 08:02:48,487 INFO L462 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-06-05 08:02:48,487 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:02:48,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-06-05 08:02:48,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=739, Unknown=0, NotChecked=0, Total=870 [2021-06-05 08:02:48,487 INFO L87 Difference]: Start difference. First operand 4403 states and 12293 transitions. Second operand has 30 states, 30 states have (on average 5.066666666666666) internal successors, (152), 30 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:49,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:02:49,437 INFO L93 Difference]: Finished difference Result 5821 states and 15332 transitions. [2021-06-05 08:02:49,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-06-05 08:02:49,438 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.066666666666666) internal successors, (152), 30 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 150 [2021-06-05 08:02:49,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:02:49,443 INFO L225 Difference]: With dead ends: 5821 [2021-06-05 08:02:49,443 INFO L226 Difference]: Without dead ends: 5551 [2021-06-05 08:02:49,444 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1293 ImplicationChecksByTransitivity, 943.7ms TimeCoverageRelationStatistics Valid=1328, Invalid=4074, Unknown=0, NotChecked=0, Total=5402 [2021-06-05 08:02:49,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5551 states. [2021-06-05 08:02:49,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5551 to 4478. [2021-06-05 08:02:49,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4478 states, 4477 states have (on average 2.796068796068796) internal successors, (12518), 4477 states have internal predecessors, (12518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:49,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4478 states to 4478 states and 12518 transitions. [2021-06-05 08:02:49,494 INFO L78 Accepts]: Start accepts. Automaton has 4478 states and 12518 transitions. Word has length 150 [2021-06-05 08:02:49,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:02:49,494 INFO L482 AbstractCegarLoop]: Abstraction has 4478 states and 12518 transitions. [2021-06-05 08:02:49,494 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 5.066666666666666) internal successors, (152), 30 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:49,494 INFO L276 IsEmpty]: Start isEmpty. Operand 4478 states and 12518 transitions. [2021-06-05 08:02:49,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-06-05 08:02:49,498 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:02:49,498 INFO L521 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:02:49,698 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable295,291 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:02:49,698 INFO L430 AbstractCegarLoop]: === Iteration 297 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:02:49,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:02:49,698 INFO L82 PathProgramCache]: Analyzing trace with hash 1823596291, now seen corresponding path program 288 times [2021-06-05 08:02:49,698 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:02:49,699 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32580059] [2021-06-05 08:02:49,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:02:49,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:02:49,925 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:49,925 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:02:49,925 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32580059] [2021-06-05 08:02:49,925 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32580059] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:49,925 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [792592472] [2021-06-05 08:02:49,925 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 292 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 292 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:02:50,001 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2021-06-05 08:02:50,001 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:02:50,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 30 conjunts are in the unsatisfiable core [2021-06-05 08:02:50,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:02:50,154 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:50,154 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [792592472] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:50,154 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:02:50,154 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 29 [2021-06-05 08:02:50,154 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370455158] [2021-06-05 08:02:50,155 INFO L462 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-06-05 08:02:50,155 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:02:50,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-06-05 08:02:50,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=672, Unknown=0, NotChecked=0, Total=812 [2021-06-05 08:02:50,155 INFO L87 Difference]: Start difference. First operand 4478 states and 12518 transitions. Second operand has 29 states, 29 states have (on average 5.172413793103448) internal successors, (150), 29 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:50,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:02:50,952 INFO L93 Difference]: Finished difference Result 5846 states and 15457 transitions. [2021-06-05 08:02:50,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-06-05 08:02:50,953 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 5.172413793103448) internal successors, (150), 29 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 150 [2021-06-05 08:02:50,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:02:50,959 INFO L225 Difference]: With dead ends: 5846 [2021-06-05 08:02:50,959 INFO L226 Difference]: Without dead ends: 5576 [2021-06-05 08:02:50,959 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1260 ImplicationChecksByTransitivity, 776.8ms TimeCoverageRelationStatistics Valid=1310, Invalid=3802, Unknown=0, NotChecked=0, Total=5112 [2021-06-05 08:02:50,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5576 states. [2021-06-05 08:02:51,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5576 to 4553. [2021-06-05 08:02:51,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4553 states, 4552 states have (on average 2.7994288224956065) internal successors, (12743), 4552 states have internal predecessors, (12743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:51,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4553 states to 4553 states and 12743 transitions. [2021-06-05 08:02:51,013 INFO L78 Accepts]: Start accepts. Automaton has 4553 states and 12743 transitions. Word has length 150 [2021-06-05 08:02:51,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:02:51,013 INFO L482 AbstractCegarLoop]: Abstraction has 4553 states and 12743 transitions. [2021-06-05 08:02:51,013 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 5.172413793103448) internal successors, (150), 29 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:51,013 INFO L276 IsEmpty]: Start isEmpty. Operand 4553 states and 12743 transitions. [2021-06-05 08:02:51,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-06-05 08:02:51,017 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:02:51,017 INFO L521 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:02:51,217 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable296,292 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:02:51,217 INFO L430 AbstractCegarLoop]: === Iteration 298 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:02:51,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:02:51,218 INFO L82 PathProgramCache]: Analyzing trace with hash -1472474669, now seen corresponding path program 289 times [2021-06-05 08:02:51,218 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:02:51,218 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142581317] [2021-06-05 08:02:51,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:02:51,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:02:51,477 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:51,477 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:02:51,477 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142581317] [2021-06-05 08:02:51,477 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142581317] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:51,477 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1915816553] [2021-06-05 08:02:51,477 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 293 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 293 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:02:51,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:02:51,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 30 conjunts are in the unsatisfiable core [2021-06-05 08:02:51,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:02:51,706 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:51,707 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1915816553] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:51,707 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:02:51,707 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 30 [2021-06-05 08:02:51,707 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404582515] [2021-06-05 08:02:51,707 INFO L462 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-06-05 08:02:51,707 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:02:51,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-06-05 08:02:51,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=730, Unknown=0, NotChecked=0, Total=870 [2021-06-05 08:02:51,707 INFO L87 Difference]: Start difference. First operand 4553 states and 12743 transitions. Second operand has 30 states, 30 states have (on average 5.066666666666666) internal successors, (152), 30 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:52,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:02:52,703 INFO L93 Difference]: Finished difference Result 5871 states and 15582 transitions. [2021-06-05 08:02:52,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-06-05 08:02:52,703 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.066666666666666) internal successors, (152), 30 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 150 [2021-06-05 08:02:52,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:02:52,710 INFO L225 Difference]: With dead ends: 5871 [2021-06-05 08:02:52,710 INFO L226 Difference]: Without dead ends: 5601 [2021-06-05 08:02:52,710 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1404 ImplicationChecksByTransitivity, 999.6ms TimeCoverageRelationStatistics Valid=1449, Invalid=4251, Unknown=0, NotChecked=0, Total=5700 [2021-06-05 08:02:52,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5601 states. [2021-06-05 08:02:52,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5601 to 4628. [2021-06-05 08:02:52,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4628 states, 4627 states have (on average 2.802679922195807) internal successors, (12968), 4627 states have internal predecessors, (12968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:52,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4628 states to 4628 states and 12968 transitions. [2021-06-05 08:02:52,771 INFO L78 Accepts]: Start accepts. Automaton has 4628 states and 12968 transitions. Word has length 150 [2021-06-05 08:02:52,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:02:52,771 INFO L482 AbstractCegarLoop]: Abstraction has 4628 states and 12968 transitions. [2021-06-05 08:02:52,771 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 5.066666666666666) internal successors, (152), 30 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:52,771 INFO L276 IsEmpty]: Start isEmpty. Operand 4628 states and 12968 transitions. [2021-06-05 08:02:52,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-06-05 08:02:52,775 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:02:52,775 INFO L521 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:02:52,975 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable297,293 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:02:52,975 INFO L430 AbstractCegarLoop]: === Iteration 299 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:02:52,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:02:52,976 INFO L82 PathProgramCache]: Analyzing trace with hash 943164737, now seen corresponding path program 290 times [2021-06-05 08:02:52,976 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:02:52,976 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986332297] [2021-06-05 08:02:52,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:02:52,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:02:53,201 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:53,202 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:02:53,202 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986332297] [2021-06-05 08:02:53,202 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986332297] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:53,202 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1894022650] [2021-06-05 08:02:53,202 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 294 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 294 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:02:53,263 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 08:02:53,263 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:02:53,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 30 conjunts are in the unsatisfiable core [2021-06-05 08:02:53,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:02:53,415 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:53,415 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1894022650] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:53,415 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:02:53,416 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 29 [2021-06-05 08:02:53,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464886415] [2021-06-05 08:02:53,416 INFO L462 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-06-05 08:02:53,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:02:53,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-06-05 08:02:53,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=660, Unknown=0, NotChecked=0, Total=812 [2021-06-05 08:02:53,416 INFO L87 Difference]: Start difference. First operand 4628 states and 12968 transitions. Second operand has 29 states, 29 states have (on average 5.172413793103448) internal successors, (150), 29 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:54,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:02:54,252 INFO L93 Difference]: Finished difference Result 5896 states and 15707 transitions. [2021-06-05 08:02:54,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-06-05 08:02:54,253 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 5.172413793103448) internal successors, (150), 29 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 150 [2021-06-05 08:02:54,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:02:54,258 INFO L225 Difference]: With dead ends: 5896 [2021-06-05 08:02:54,258 INFO L226 Difference]: Without dead ends: 5626 [2021-06-05 08:02:54,259 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1368 ImplicationChecksByTransitivity, 825.3ms TimeCoverageRelationStatistics Valid=1439, Invalid=3963, Unknown=0, NotChecked=0, Total=5402 [2021-06-05 08:02:54,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5626 states. [2021-06-05 08:02:54,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5626 to 4703. [2021-06-05 08:02:54,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4703 states, 4702 states have (on average 2.8058273075287112) internal successors, (13193), 4702 states have internal predecessors, (13193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:54,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4703 states to 4703 states and 13193 transitions. [2021-06-05 08:02:54,318 INFO L78 Accepts]: Start accepts. Automaton has 4703 states and 13193 transitions. Word has length 150 [2021-06-05 08:02:54,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:02:54,319 INFO L482 AbstractCegarLoop]: Abstraction has 4703 states and 13193 transitions. [2021-06-05 08:02:54,319 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 5.172413793103448) internal successors, (150), 29 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:54,319 INFO L276 IsEmpty]: Start isEmpty. Operand 4703 states and 13193 transitions. [2021-06-05 08:02:54,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-06-05 08:02:54,322 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:02:54,322 INFO L521 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:02:54,523 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 294 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable298 [2021-06-05 08:02:54,523 INFO L430 AbstractCegarLoop]: === Iteration 300 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:02:54,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:02:54,523 INFO L82 PathProgramCache]: Analyzing trace with hash -1321483247, now seen corresponding path program 291 times [2021-06-05 08:02:54,523 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:02:54,523 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292334747] [2021-06-05 08:02:54,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:02:54,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:02:54,773 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:54,774 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:02:54,774 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292334747] [2021-06-05 08:02:54,774 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292334747] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:54,774 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [444730565] [2021-06-05 08:02:54,774 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 295 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 295 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:02:54,847 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2021-06-05 08:02:54,847 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:02:54,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 30 conjunts are in the unsatisfiable core [2021-06-05 08:02:54,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:02:55,034 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:55,034 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [444730565] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:55,034 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:02:55,034 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 30 [2021-06-05 08:02:55,034 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326096397] [2021-06-05 08:02:55,034 INFO L462 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-06-05 08:02:55,034 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:02:55,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-06-05 08:02:55,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=717, Unknown=0, NotChecked=0, Total=870 [2021-06-05 08:02:55,035 INFO L87 Difference]: Start difference. First operand 4703 states and 13193 transitions. Second operand has 30 states, 30 states have (on average 5.066666666666666) internal successors, (152), 30 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:56,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:02:56,089 INFO L93 Difference]: Finished difference Result 5921 states and 15832 transitions. [2021-06-05 08:02:56,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-06-05 08:02:56,090 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.066666666666666) internal successors, (152), 30 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 150 [2021-06-05 08:02:56,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:02:56,096 INFO L225 Difference]: With dead ends: 5921 [2021-06-05 08:02:56,096 INFO L226 Difference]: Without dead ends: 5651 [2021-06-05 08:02:56,097 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1519 ImplicationChecksByTransitivity, 1028.6ms TimeCoverageRelationStatistics Valid=1586, Invalid=4420, Unknown=0, NotChecked=0, Total=6006 [2021-06-05 08:02:56,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5651 states. [2021-06-05 08:02:56,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5651 to 4778. [2021-06-05 08:02:56,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4778 states, 4777 states have (on average 2.808875863512665) internal successors, (13418), 4777 states have internal predecessors, (13418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:56,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4778 states to 4778 states and 13418 transitions. [2021-06-05 08:02:56,174 INFO L78 Accepts]: Start accepts. Automaton has 4778 states and 13418 transitions. Word has length 150 [2021-06-05 08:02:56,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:02:56,174 INFO L482 AbstractCegarLoop]: Abstraction has 4778 states and 13418 transitions. [2021-06-05 08:02:56,174 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 5.066666666666666) internal successors, (152), 30 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:56,174 INFO L276 IsEmpty]: Start isEmpty. Operand 4778 states and 13418 transitions. [2021-06-05 08:02:56,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-06-05 08:02:56,178 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:02:56,178 INFO L521 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:02:56,378 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable299,295 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:02:56,379 INFO L430 AbstractCegarLoop]: === Iteration 301 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:02:56,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:02:56,379 INFO L82 PathProgramCache]: Analyzing trace with hash -707243777, now seen corresponding path program 292 times [2021-06-05 08:02:56,379 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:02:56,379 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017775680] [2021-06-05 08:02:56,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:02:56,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:02:56,601 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:56,602 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:02:56,602 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017775680] [2021-06-05 08:02:56,602 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017775680] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:56,602 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1535217730] [2021-06-05 08:02:56,602 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 296 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 296 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:02:56,662 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 08:02:56,662 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:02:56,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 30 conjunts are in the unsatisfiable core [2021-06-05 08:02:56,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:02:56,847 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:56,848 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1535217730] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:56,848 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:02:56,848 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 29 [2021-06-05 08:02:56,848 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589097878] [2021-06-05 08:02:56,848 INFO L462 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-06-05 08:02:56,848 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:02:56,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-06-05 08:02:56,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=644, Unknown=0, NotChecked=0, Total=812 [2021-06-05 08:02:56,848 INFO L87 Difference]: Start difference. First operand 4778 states and 13418 transitions. Second operand has 29 states, 29 states have (on average 5.172413793103448) internal successors, (150), 29 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:57,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:02:57,703 INFO L93 Difference]: Finished difference Result 5991 states and 16077 transitions. [2021-06-05 08:02:57,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-06-05 08:02:57,703 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 5.172413793103448) internal successors, (150), 29 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 150 [2021-06-05 08:02:57,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:02:57,709 INFO L225 Difference]: With dead ends: 5991 [2021-06-05 08:02:57,709 INFO L226 Difference]: Without dead ends: 5721 [2021-06-05 08:02:57,710 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1480 ImplicationChecksByTransitivity, 834.7ms TimeCoverageRelationStatistics Valid=1584, Invalid=4116, Unknown=0, NotChecked=0, Total=5700 [2021-06-05 08:02:57,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5721 states. [2021-06-05 08:02:57,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5721 to 4853. [2021-06-05 08:02:57,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4853 states, 4852 states have (on average 2.814921681780709) internal successors, (13658), 4852 states have internal predecessors, (13658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:57,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4853 states to 4853 states and 13658 transitions. [2021-06-05 08:02:57,764 INFO L78 Accepts]: Start accepts. Automaton has 4853 states and 13658 transitions. Word has length 150 [2021-06-05 08:02:57,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:02:57,764 INFO L482 AbstractCegarLoop]: Abstraction has 4853 states and 13658 transitions. [2021-06-05 08:02:57,764 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 5.172413793103448) internal successors, (150), 29 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:57,764 INFO L276 IsEmpty]: Start isEmpty. Operand 4853 states and 13658 transitions. [2021-06-05 08:02:57,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-06-05 08:02:57,767 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:02:57,768 INFO L521 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:02:57,968 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 296 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable300 [2021-06-05 08:02:57,968 INFO L430 AbstractCegarLoop]: === Iteration 302 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:02:57,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:02:57,968 INFO L82 PathProgramCache]: Analyzing trace with hash 1872481231, now seen corresponding path program 293 times [2021-06-05 08:02:57,968 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:02:57,968 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794113386] [2021-06-05 08:02:57,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:02:57,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:02:58,198 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:58,198 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:02:58,198 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794113386] [2021-06-05 08:02:58,198 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794113386] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:58,198 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1243235290] [2021-06-05 08:02:58,199 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 297 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 297 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:02:58,267 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2021-06-05 08:02:58,268 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:02:58,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 30 conjunts are in the unsatisfiable core [2021-06-05 08:02:58,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:02:58,438 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:58,438 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1243235290] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:58,438 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:02:58,438 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 30 [2021-06-05 08:02:58,438 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595882697] [2021-06-05 08:02:58,439 INFO L462 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-06-05 08:02:58,439 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:02:58,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-06-05 08:02:58,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=700, Unknown=0, NotChecked=0, Total=870 [2021-06-05 08:02:58,439 INFO L87 Difference]: Start difference. First operand 4853 states and 13658 transitions. Second operand has 30 states, 30 states have (on average 5.066666666666666) internal successors, (152), 30 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:59,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:02:59,591 INFO L93 Difference]: Finished difference Result 6569 states and 17703 transitions. [2021-06-05 08:02:59,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-06-05 08:02:59,591 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.066666666666666) internal successors, (152), 30 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 150 [2021-06-05 08:02:59,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:02:59,597 INFO L225 Difference]: With dead ends: 6569 [2021-06-05 08:02:59,597 INFO L226 Difference]: Without dead ends: 5946 [2021-06-05 08:02:59,598 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1737 ImplicationChecksByTransitivity, 1101.3ms TimeCoverageRelationStatistics Valid=1760, Invalid=4882, Unknown=0, NotChecked=0, Total=6642 [2021-06-05 08:02:59,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5946 states. [2021-06-05 08:02:59,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5946 to 4928. [2021-06-05 08:02:59,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4928 states, 4927 states have (on average 2.8187538055611934) internal successors, (13888), 4927 states have internal predecessors, (13888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:59,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4928 states to 4928 states and 13888 transitions. [2021-06-05 08:02:59,648 INFO L78 Accepts]: Start accepts. Automaton has 4928 states and 13888 transitions. Word has length 150 [2021-06-05 08:02:59,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:02:59,648 INFO L482 AbstractCegarLoop]: Abstraction has 4928 states and 13888 transitions. [2021-06-05 08:02:59,649 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 5.066666666666666) internal successors, (152), 30 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:59,649 INFO L276 IsEmpty]: Start isEmpty. Operand 4928 states and 13888 transitions. [2021-06-05 08:02:59,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-06-05 08:02:59,652 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:02:59,652 INFO L521 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:02:59,852 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 297 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable301 [2021-06-05 08:02:59,853 INFO L430 AbstractCegarLoop]: === Iteration 303 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:02:59,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:02:59,853 INFO L82 PathProgramCache]: Analyzing trace with hash 839833629, now seen corresponding path program 294 times [2021-06-05 08:02:59,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:02:59,853 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710813482] [2021-06-05 08:02:59,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:02:59,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:03:00,075 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:00,076 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:03:00,076 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710813482] [2021-06-05 08:03:00,076 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710813482] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:00,076 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1516936978] [2021-06-05 08:03:00,076 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 298 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 298 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:03:00,145 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2021-06-05 08:03:00,145 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:03:00,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 30 conjunts are in the unsatisfiable core [2021-06-05 08:03:00,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:03:00,293 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:00,294 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1516936978] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:00,294 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:03:00,294 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 29 [2021-06-05 08:03:00,294 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115231629] [2021-06-05 08:03:00,294 INFO L462 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-06-05 08:03:00,294 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:03:00,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-06-05 08:03:00,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=624, Unknown=0, NotChecked=0, Total=812 [2021-06-05 08:03:00,295 INFO L87 Difference]: Start difference. First operand 4928 states and 13888 transitions. Second operand has 29 states, 29 states have (on average 5.172413793103448) internal successors, (150), 29 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:01,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:03:01,200 INFO L93 Difference]: Finished difference Result 6798 states and 18421 transitions. [2021-06-05 08:03:01,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-06-05 08:03:01,200 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 5.172413793103448) internal successors, (150), 29 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 150 [2021-06-05 08:03:01,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:03:01,206 INFO L225 Difference]: With dead ends: 6798 [2021-06-05 08:03:01,206 INFO L226 Difference]: Without dead ends: 6528 [2021-06-05 08:03:01,206 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1595 ImplicationChecksByTransitivity, 880.8ms TimeCoverageRelationStatistics Valid=1746, Invalid=4260, Unknown=0, NotChecked=0, Total=6006 [2021-06-05 08:03:01,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6528 states. [2021-06-05 08:03:01,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6528 to 5108. [2021-06-05 08:03:01,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5108 states, 5107 states have (on average 2.8288623457998825) internal successors, (14447), 5107 states have internal predecessors, (14447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:01,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5108 states to 5108 states and 14447 transitions. [2021-06-05 08:03:01,259 INFO L78 Accepts]: Start accepts. Automaton has 5108 states and 14447 transitions. Word has length 150 [2021-06-05 08:03:01,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:03:01,259 INFO L482 AbstractCegarLoop]: Abstraction has 5108 states and 14447 transitions. [2021-06-05 08:03:01,259 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 5.172413793103448) internal successors, (150), 29 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:01,259 INFO L276 IsEmpty]: Start isEmpty. Operand 5108 states and 14447 transitions. [2021-06-05 08:03:01,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-06-05 08:03:01,262 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:03:01,263 INFO L521 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:03:01,463 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 298 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable302 [2021-06-05 08:03:01,463 INFO L430 AbstractCegarLoop]: === Iteration 304 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:03:01,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:03:01,463 INFO L82 PathProgramCache]: Analyzing trace with hash 862176879, now seen corresponding path program 295 times [2021-06-05 08:03:01,464 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:03:01,464 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627810772] [2021-06-05 08:03:01,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:03:01,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:03:01,694 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:01,694 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:03:01,694 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627810772] [2021-06-05 08:03:01,694 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627810772] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:01,694 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1562800186] [2021-06-05 08:03:01,695 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 299 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 299 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:03:01,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:03:01,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 30 conjunts are in the unsatisfiable core [2021-06-05 08:03:01,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:03:01,928 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:01,928 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1562800186] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:01,928 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:03:01,929 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 31 [2021-06-05 08:03:01,929 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813454176] [2021-06-05 08:03:01,929 INFO L462 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-06-05 08:03:01,929 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:03:01,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-06-05 08:03:01,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=736, Unknown=0, NotChecked=0, Total=930 [2021-06-05 08:03:01,929 INFO L87 Difference]: Start difference. First operand 5108 states and 14447 transitions. Second operand has 31 states, 31 states have (on average 4.935483870967742) internal successors, (153), 31 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:03,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:03:03,118 INFO L93 Difference]: Finished difference Result 6621 states and 17921 transitions. [2021-06-05 08:03:03,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-06-05 08:03:03,119 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.935483870967742) internal successors, (153), 31 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 150 [2021-06-05 08:03:03,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:03:03,125 INFO L225 Difference]: With dead ends: 6621 [2021-06-05 08:03:03,125 INFO L226 Difference]: Without dead ends: 6046 [2021-06-05 08:03:03,126 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1970 ImplicationChecksByTransitivity, 1151.5ms TimeCoverageRelationStatistics Valid=1989, Invalid=5321, Unknown=0, NotChecked=0, Total=7310 [2021-06-05 08:03:03,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6046 states. [2021-06-05 08:03:03,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6046 to 3403. [2021-06-05 08:03:03,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3403 states, 3402 states have (on average 2.7389770723104054) internal successors, (9318), 3402 states have internal predecessors, (9318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:03,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3403 states to 3403 states and 9318 transitions. [2021-06-05 08:03:03,200 INFO L78 Accepts]: Start accepts. Automaton has 3403 states and 9318 transitions. Word has length 150 [2021-06-05 08:03:03,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:03:03,200 INFO L482 AbstractCegarLoop]: Abstraction has 3403 states and 9318 transitions. [2021-06-05 08:03:03,200 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 4.935483870967742) internal successors, (153), 31 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:03,200 INFO L276 IsEmpty]: Start isEmpty. Operand 3403 states and 9318 transitions. [2021-06-05 08:03:03,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-06-05 08:03:03,202 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:03:03,202 INFO L521 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:03:03,402 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable303,299 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:03:03,403 INFO L430 AbstractCegarLoop]: === Iteration 305 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:03:03,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:03:03,403 INFO L82 PathProgramCache]: Analyzing trace with hash -652298224, now seen corresponding path program 296 times [2021-06-05 08:03:03,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:03:03,403 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907287878] [2021-06-05 08:03:03,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:03:03,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:03:03,709 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:03,709 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:03:03,710 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907287878] [2021-06-05 08:03:03,710 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907287878] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:03,710 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [253660989] [2021-06-05 08:03:03,710 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 300 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 300 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:03:03,772 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 08:03:03,772 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:03:03,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 31 conjunts are in the unsatisfiable core [2021-06-05 08:03:03,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:03:03,947 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:03,948 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [253660989] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:03,948 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:03:03,948 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2021-06-05 08:03:03,948 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789927632] [2021-06-05 08:03:03,948 INFO L462 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-06-05 08:03:03,948 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:03:03,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-06-05 08:03:03,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=679, Unknown=0, NotChecked=0, Total=870 [2021-06-05 08:03:03,949 INFO L87 Difference]: Start difference. First operand 3403 states and 9318 transitions. Second operand has 30 states, 30 states have (on average 5.166666666666667) internal successors, (155), 30 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:04,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:03:04,474 INFO L93 Difference]: Finished difference Result 5021 states and 12757 transitions. [2021-06-05 08:03:04,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-06-05 08:03:04,474 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.166666666666667) internal successors, (155), 30 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 155 [2021-06-05 08:03:04,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:03:04,479 INFO L225 Difference]: With dead ends: 5021 [2021-06-05 08:03:04,479 INFO L226 Difference]: Without dead ends: 4751 [2021-06-05 08:03:04,480 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 648 ImplicationChecksByTransitivity, 646.9ms TimeCoverageRelationStatistics Valid=935, Invalid=2605, Unknown=0, NotChecked=0, Total=3540 [2021-06-05 08:03:04,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4751 states. [2021-06-05 08:03:04,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4751 to 3478. [2021-06-05 08:03:04,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3478 states, 3477 states have (on average 2.7446074201898187) internal successors, (9543), 3477 states have internal predecessors, (9543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:04,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3478 states to 3478 states and 9543 transitions. [2021-06-05 08:03:04,520 INFO L78 Accepts]: Start accepts. Automaton has 3478 states and 9543 transitions. Word has length 155 [2021-06-05 08:03:04,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:03:04,520 INFO L482 AbstractCegarLoop]: Abstraction has 3478 states and 9543 transitions. [2021-06-05 08:03:04,520 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 5.166666666666667) internal successors, (155), 30 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:04,520 INFO L276 IsEmpty]: Start isEmpty. Operand 3478 states and 9543 transitions. [2021-06-05 08:03:04,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-06-05 08:03:04,523 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:03:04,523 INFO L521 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:03:04,723 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 300 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable304 [2021-06-05 08:03:04,723 INFO L430 AbstractCegarLoop]: === Iteration 306 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:03:04,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:03:04,724 INFO L82 PathProgramCache]: Analyzing trace with hash 814385888, now seen corresponding path program 297 times [2021-06-05 08:03:04,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:03:04,724 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660331047] [2021-06-05 08:03:04,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:03:04,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:03:05,021 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:05,021 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:03:05,021 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660331047] [2021-06-05 08:03:05,021 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660331047] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:05,021 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1652662192] [2021-06-05 08:03:05,021 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 301 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 301 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:03:05,094 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2021-06-05 08:03:05,095 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:03:05,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 31 conjunts are in the unsatisfiable core [2021-06-05 08:03:05,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:03:05,285 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:05,285 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1652662192] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:05,286 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:03:05,286 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 31 [2021-06-05 08:03:05,286 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019477715] [2021-06-05 08:03:05,286 INFO L462 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-06-05 08:03:05,286 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:03:05,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-06-05 08:03:05,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=747, Unknown=0, NotChecked=0, Total=930 [2021-06-05 08:03:05,286 INFO L87 Difference]: Start difference. First operand 3478 states and 9543 transitions. Second operand has 31 states, 31 states have (on average 5.064516129032258) internal successors, (157), 31 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:05,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:03:05,880 INFO L93 Difference]: Finished difference Result 5641 states and 14072 transitions. [2021-06-05 08:03:05,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-05 08:03:05,880 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.064516129032258) internal successors, (157), 31 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 155 [2021-06-05 08:03:05,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:03:05,885 INFO L225 Difference]: With dead ends: 5641 [2021-06-05 08:03:05,885 INFO L226 Difference]: Without dead ends: 5371 [2021-06-05 08:03:05,885 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 753 ImplicationChecksByTransitivity, 696.2ms TimeCoverageRelationStatistics Valid=997, Invalid=2909, Unknown=0, NotChecked=0, Total=3906 [2021-06-05 08:03:05,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5371 states. [2021-06-05 08:03:05,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5371 to 3553. [2021-06-05 08:03:05,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3553 states, 3552 states have (on average 2.75) internal successors, (9768), 3552 states have internal predecessors, (9768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:05,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3553 states to 3553 states and 9768 transitions. [2021-06-05 08:03:05,925 INFO L78 Accepts]: Start accepts. Automaton has 3553 states and 9768 transitions. Word has length 155 [2021-06-05 08:03:05,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:03:05,925 INFO L482 AbstractCegarLoop]: Abstraction has 3553 states and 9768 transitions. [2021-06-05 08:03:05,925 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 5.064516129032258) internal successors, (157), 31 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:05,925 INFO L276 IsEmpty]: Start isEmpty. Operand 3553 states and 9768 transitions. [2021-06-05 08:03:05,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-06-05 08:03:05,928 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:03:05,928 INFO L521 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:03:06,128 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable305,301 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:03:06,128 INFO L430 AbstractCegarLoop]: === Iteration 307 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:03:06,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:03:06,129 INFO L82 PathProgramCache]: Analyzing trace with hash 679164494, now seen corresponding path program 298 times [2021-06-05 08:03:06,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:03:06,129 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067837559] [2021-06-05 08:03:06,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:03:06,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:03:06,407 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:06,407 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:03:06,407 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067837559] [2021-06-05 08:03:06,408 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067837559] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:06,408 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [687743411] [2021-06-05 08:03:06,408 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 302 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 302 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:03:06,468 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 08:03:06,469 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:03:06,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 31 conjunts are in the unsatisfiable core [2021-06-05 08:03:06,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:03:06,640 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:06,641 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [687743411] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:06,641 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:03:06,641 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2021-06-05 08:03:06,641 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248859261] [2021-06-05 08:03:06,641 INFO L462 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-06-05 08:03:06,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:03:06,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-06-05 08:03:06,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=698, Unknown=0, NotChecked=0, Total=870 [2021-06-05 08:03:06,641 INFO L87 Difference]: Start difference. First operand 3553 states and 9768 transitions. Second operand has 30 states, 30 states have (on average 5.166666666666667) internal successors, (155), 30 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:07,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:03:07,205 INFO L93 Difference]: Finished difference Result 5671 states and 14207 transitions. [2021-06-05 08:03:07,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-05 08:03:07,205 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.166666666666667) internal successors, (155), 30 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 155 [2021-06-05 08:03:07,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:03:07,211 INFO L225 Difference]: With dead ends: 5671 [2021-06-05 08:03:07,211 INFO L226 Difference]: Without dead ends: 5401 [2021-06-05 08:03:07,211 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 816 ImplicationChecksByTransitivity, 654.4ms TimeCoverageRelationStatistics Valid=991, Invalid=2915, Unknown=0, NotChecked=0, Total=3906 [2021-06-05 08:03:07,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5401 states. [2021-06-05 08:03:07,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5401 to 3628. [2021-06-05 08:03:07,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3628 states, 3627 states have (on average 2.7551695616211744) internal successors, (9993), 3627 states have internal predecessors, (9993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:07,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3628 states to 3628 states and 9993 transitions. [2021-06-05 08:03:07,256 INFO L78 Accepts]: Start accepts. Automaton has 3628 states and 9993 transitions. Word has length 155 [2021-06-05 08:03:07,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:03:07,256 INFO L482 AbstractCegarLoop]: Abstraction has 3628 states and 9993 transitions. [2021-06-05 08:03:07,256 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 5.166666666666667) internal successors, (155), 30 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:07,256 INFO L276 IsEmpty]: Start isEmpty. Operand 3628 states and 9993 transitions. [2021-06-05 08:03:07,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-06-05 08:03:07,259 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:03:07,259 INFO L521 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:03:07,460 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable306,302 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:03:07,460 INFO L430 AbstractCegarLoop]: === Iteration 308 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:03:07,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:03:07,460 INFO L82 PathProgramCache]: Analyzing trace with hash -197570274, now seen corresponding path program 299 times [2021-06-05 08:03:07,460 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:03:07,461 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789589238] [2021-06-05 08:03:07,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:03:07,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:03:07,752 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:07,752 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:03:07,752 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789589238] [2021-06-05 08:03:07,752 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789589238] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:07,752 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1116436306] [2021-06-05 08:03:07,752 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 303 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 303 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:03:07,816 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2021-06-05 08:03:07,816 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:03:07,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 31 conjunts are in the unsatisfiable core [2021-06-05 08:03:07,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:03:08,048 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:08,048 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1116436306] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:08,048 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:03:08,048 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 31 [2021-06-05 08:03:08,048 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326768690] [2021-06-05 08:03:08,048 INFO L462 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-06-05 08:03:08,049 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:03:08,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-06-05 08:03:08,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=765, Unknown=0, NotChecked=0, Total=930 [2021-06-05 08:03:08,049 INFO L87 Difference]: Start difference. First operand 3628 states and 9993 transitions. Second operand has 31 states, 31 states have (on average 5.064516129032258) internal successors, (157), 31 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:08,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:03:08,696 INFO L93 Difference]: Finished difference Result 5696 states and 14332 transitions. [2021-06-05 08:03:08,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-06-05 08:03:08,696 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.064516129032258) internal successors, (157), 31 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 155 [2021-06-05 08:03:08,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:03:08,702 INFO L225 Difference]: With dead ends: 5696 [2021-06-05 08:03:08,702 INFO L226 Difference]: Without dead ends: 5426 [2021-06-05 08:03:08,702 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 836 ImplicationChecksByTransitivity, 734.4ms TimeCoverageRelationStatistics Valid=1013, Invalid=3147, Unknown=0, NotChecked=0, Total=4160 [2021-06-05 08:03:08,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5426 states. [2021-06-05 08:03:08,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5426 to 3703. [2021-06-05 08:03:08,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3703 states, 3702 states have (on average 2.760129659643436) internal successors, (10218), 3702 states have internal predecessors, (10218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:08,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3703 states to 3703 states and 10218 transitions. [2021-06-05 08:03:08,748 INFO L78 Accepts]: Start accepts. Automaton has 3703 states and 10218 transitions. Word has length 155 [2021-06-05 08:03:08,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:03:08,749 INFO L482 AbstractCegarLoop]: Abstraction has 3703 states and 10218 transitions. [2021-06-05 08:03:08,749 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 5.064516129032258) internal successors, (157), 31 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:08,749 INFO L276 IsEmpty]: Start isEmpty. Operand 3703 states and 10218 transitions. [2021-06-05 08:03:08,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-06-05 08:03:08,752 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:03:08,752 INFO L521 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:03:08,952 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable307,303 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:03:08,953 INFO L430 AbstractCegarLoop]: === Iteration 309 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:03:08,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:03:08,953 INFO L82 PathProgramCache]: Analyzing trace with hash -1934896628, now seen corresponding path program 300 times [2021-06-05 08:03:08,953 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:03:08,953 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274208917] [2021-06-05 08:03:08,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:03:08,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:03:09,224 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:09,225 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:03:09,225 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274208917] [2021-06-05 08:03:09,225 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274208917] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:09,225 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1074389970] [2021-06-05 08:03:09,225 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 304 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 304 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:03:09,297 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2021-06-05 08:03:09,297 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:03:09,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 31 conjunts are in the unsatisfiable core [2021-06-05 08:03:09,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:03:09,468 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:09,468 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1074389970] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:09,468 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:03:09,468 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2021-06-05 08:03:09,469 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817180442] [2021-06-05 08:03:09,469 INFO L462 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-06-05 08:03:09,469 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:03:09,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-06-05 08:03:09,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=713, Unknown=0, NotChecked=0, Total=870 [2021-06-05 08:03:09,469 INFO L87 Difference]: Start difference. First operand 3703 states and 10218 transitions. Second operand has 30 states, 30 states have (on average 5.166666666666667) internal successors, (155), 30 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:10,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:03:10,081 INFO L93 Difference]: Finished difference Result 5721 states and 14457 transitions. [2021-06-05 08:03:10,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-05 08:03:10,081 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.166666666666667) internal successors, (155), 30 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 155 [2021-06-05 08:03:10,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:03:10,087 INFO L225 Difference]: With dead ends: 5721 [2021-06-05 08:03:10,087 INFO L226 Difference]: Without dead ends: 5451 [2021-06-05 08:03:10,088 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 909 ImplicationChecksByTransitivity, 674.6ms TimeCoverageRelationStatistics Valid=1021, Invalid=3139, Unknown=0, NotChecked=0, Total=4160 [2021-06-05 08:03:10,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5451 states. [2021-06-05 08:03:10,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5451 to 3778. [2021-06-05 08:03:10,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3778 states, 3777 states have (on average 2.7648927720413026) internal successors, (10443), 3777 states have internal predecessors, (10443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:10,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3778 states to 3778 states and 10443 transitions. [2021-06-05 08:03:10,136 INFO L78 Accepts]: Start accepts. Automaton has 3778 states and 10443 transitions. Word has length 155 [2021-06-05 08:03:10,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:03:10,136 INFO L482 AbstractCegarLoop]: Abstraction has 3778 states and 10443 transitions. [2021-06-05 08:03:10,136 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 5.166666666666667) internal successors, (155), 30 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:10,136 INFO L276 IsEmpty]: Start isEmpty. Operand 3778 states and 10443 transitions. [2021-06-05 08:03:10,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-06-05 08:03:10,139 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:03:10,139 INFO L521 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:03:10,339 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 304 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable308 [2021-06-05 08:03:10,340 INFO L430 AbstractCegarLoop]: === Iteration 310 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:03:10,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:03:10,340 INFO L82 PathProgramCache]: Analyzing trace with hash -570348324, now seen corresponding path program 301 times [2021-06-05 08:03:10,340 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:03:10,340 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065167822] [2021-06-05 08:03:10,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:03:10,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:03:10,646 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:10,646 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:03:10,646 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065167822] [2021-06-05 08:03:10,646 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065167822] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:10,646 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1682022538] [2021-06-05 08:03:10,647 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 305 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 305 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:03:10,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:03:10,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 31 conjunts are in the unsatisfiable core [2021-06-05 08:03:10,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:03:10,895 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:10,895 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1682022538] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:10,895 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:03:10,896 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 31 [2021-06-05 08:03:10,896 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135212348] [2021-06-05 08:03:10,896 INFO L462 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-06-05 08:03:10,896 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:03:10,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-06-05 08:03:10,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=779, Unknown=0, NotChecked=0, Total=930 [2021-06-05 08:03:10,896 INFO L87 Difference]: Start difference. First operand 3778 states and 10443 transitions. Second operand has 31 states, 31 states have (on average 5.064516129032258) internal successors, (157), 31 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:11,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:03:11,601 INFO L93 Difference]: Finished difference Result 5746 states and 14582 transitions. [2021-06-05 08:03:11,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-05 08:03:11,601 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.064516129032258) internal successors, (157), 31 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 155 [2021-06-05 08:03:11,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:03:11,606 INFO L225 Difference]: With dead ends: 5746 [2021-06-05 08:03:11,606 INFO L226 Difference]: Without dead ends: 5476 [2021-06-05 08:03:11,607 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 932 ImplicationChecksByTransitivity, 791.6ms TimeCoverageRelationStatistics Valid=1045, Invalid=3377, Unknown=0, NotChecked=0, Total=4422 [2021-06-05 08:03:11,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5476 states. [2021-06-05 08:03:11,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5476 to 3853. [2021-06-05 08:03:11,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3853 states, 3852 states have (on average 2.769470404984424) internal successors, (10668), 3852 states have internal predecessors, (10668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:11,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3853 states to 3853 states and 10668 transitions. [2021-06-05 08:03:11,652 INFO L78 Accepts]: Start accepts. Automaton has 3853 states and 10668 transitions. Word has length 155 [2021-06-05 08:03:11,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:03:11,652 INFO L482 AbstractCegarLoop]: Abstraction has 3853 states and 10668 transitions. [2021-06-05 08:03:11,652 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 5.064516129032258) internal successors, (157), 31 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:11,652 INFO L276 IsEmpty]: Start isEmpty. Operand 3853 states and 10668 transitions. [2021-06-05 08:03:11,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-06-05 08:03:11,655 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:03:11,655 INFO L521 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:03:11,855 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 305 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable309 [2021-06-05 08:03:11,856 INFO L430 AbstractCegarLoop]: === Iteration 311 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:03:11,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:03:11,856 INFO L82 PathProgramCache]: Analyzing trace with hash 1447386954, now seen corresponding path program 302 times [2021-06-05 08:03:11,856 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:03:11,856 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561820244] [2021-06-05 08:03:11,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:03:11,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:03:12,114 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:12,114 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:03:12,115 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561820244] [2021-06-05 08:03:12,115 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561820244] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:12,115 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [936399078] [2021-06-05 08:03:12,115 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 306 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 306 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:03:12,175 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 08:03:12,176 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:03:12,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 31 conjunts are in the unsatisfiable core [2021-06-05 08:03:12,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:03:12,374 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:12,374 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [936399078] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:12,374 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:03:12,374 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2021-06-05 08:03:12,374 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321163429] [2021-06-05 08:03:12,374 INFO L462 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-06-05 08:03:12,374 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:03:12,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-06-05 08:03:12,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=724, Unknown=0, NotChecked=0, Total=870 [2021-06-05 08:03:12,375 INFO L87 Difference]: Start difference. First operand 3853 states and 10668 transitions. Second operand has 30 states, 30 states have (on average 5.166666666666667) internal successors, (155), 30 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:13,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:03:13,014 INFO L93 Difference]: Finished difference Result 5771 states and 14707 transitions. [2021-06-05 08:03:13,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-05 08:03:13,015 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.166666666666667) internal successors, (155), 30 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 155 [2021-06-05 08:03:13,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:03:13,020 INFO L225 Difference]: With dead ends: 5771 [2021-06-05 08:03:13,020 INFO L226 Difference]: Without dead ends: 5501 [2021-06-05 08:03:13,020 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1010 ImplicationChecksByTransitivity, 683.5ms TimeCoverageRelationStatistics Valid=1067, Invalid=3355, Unknown=0, NotChecked=0, Total=4422 [2021-06-05 08:03:13,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5501 states. [2021-06-05 08:03:13,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5501 to 3928. [2021-06-05 08:03:13,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3928 states, 3927 states have (on average 2.7738731856378913) internal successors, (10893), 3927 states have internal predecessors, (10893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:13,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3928 states to 3928 states and 10893 transitions. [2021-06-05 08:03:13,062 INFO L78 Accepts]: Start accepts. Automaton has 3928 states and 10893 transitions. Word has length 155 [2021-06-05 08:03:13,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:03:13,062 INFO L482 AbstractCegarLoop]: Abstraction has 3928 states and 10893 transitions. [2021-06-05 08:03:13,063 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 5.166666666666667) internal successors, (155), 30 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:13,063 INFO L276 IsEmpty]: Start isEmpty. Operand 3928 states and 10893 transitions. [2021-06-05 08:03:13,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-06-05 08:03:13,066 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:03:13,066 INFO L521 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:03:13,266 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 306 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable310 [2021-06-05 08:03:13,266 INFO L430 AbstractCegarLoop]: === Iteration 312 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:03:13,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:03:13,266 INFO L82 PathProgramCache]: Analyzing trace with hash 548863514, now seen corresponding path program 303 times [2021-06-05 08:03:13,267 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:03:13,267 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581729877] [2021-06-05 08:03:13,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:03:13,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:03:13,544 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:13,544 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:03:13,544 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581729877] [2021-06-05 08:03:13,544 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581729877] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:13,544 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [371554561] [2021-06-05 08:03:13,544 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 307 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 307 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:03:13,615 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2021-06-05 08:03:13,616 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:03:13,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 31 conjunts are in the unsatisfiable core [2021-06-05 08:03:13,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:03:13,802 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:13,802 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [371554561] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:13,802 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:03:13,802 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 31 [2021-06-05 08:03:13,802 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524025331] [2021-06-05 08:03:13,802 INFO L462 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-06-05 08:03:13,802 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:03:13,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-06-05 08:03:13,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=789, Unknown=0, NotChecked=0, Total=930 [2021-06-05 08:03:13,803 INFO L87 Difference]: Start difference. First operand 3928 states and 10893 transitions. Second operand has 31 states, 31 states have (on average 5.064516129032258) internal successors, (157), 31 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:14,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:03:14,540 INFO L93 Difference]: Finished difference Result 5796 states and 14832 transitions. [2021-06-05 08:03:14,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-06-05 08:03:14,540 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.064516129032258) internal successors, (157), 31 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 155 [2021-06-05 08:03:14,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:03:14,546 INFO L225 Difference]: With dead ends: 5796 [2021-06-05 08:03:14,546 INFO L226 Difference]: Without dead ends: 5526 [2021-06-05 08:03:14,547 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1036 ImplicationChecksByTransitivity, 791.6ms TimeCoverageRelationStatistics Valid=1093, Invalid=3599, Unknown=0, NotChecked=0, Total=4692 [2021-06-05 08:03:14,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5526 states. [2021-06-05 08:03:14,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5526 to 4003. [2021-06-05 08:03:14,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4003 states, 4002 states have (on average 2.7781109445277363) internal successors, (11118), 4002 states have internal predecessors, (11118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:14,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4003 states to 4003 states and 11118 transitions. [2021-06-05 08:03:14,592 INFO L78 Accepts]: Start accepts. Automaton has 4003 states and 11118 transitions. Word has length 155 [2021-06-05 08:03:14,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:03:14,592 INFO L482 AbstractCegarLoop]: Abstraction has 4003 states and 11118 transitions. [2021-06-05 08:03:14,592 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 5.064516129032258) internal successors, (157), 31 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:14,592 INFO L276 IsEmpty]: Start isEmpty. Operand 4003 states and 11118 transitions. [2021-06-05 08:03:14,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-06-05 08:03:14,595 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:03:14,595 INFO L521 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:03:14,795 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 307 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable311 [2021-06-05 08:03:14,795 INFO L430 AbstractCegarLoop]: === Iteration 313 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:03:14,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:03:14,796 INFO L82 PathProgramCache]: Analyzing trace with hash -1066089976, now seen corresponding path program 304 times [2021-06-05 08:03:14,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:03:14,796 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459141216] [2021-06-05 08:03:14,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:03:14,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:03:15,048 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:15,048 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:03:15,048 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459141216] [2021-06-05 08:03:15,049 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459141216] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:15,049 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1618293645] [2021-06-05 08:03:15,049 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 308 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 308 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:03:15,109 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 08:03:15,109 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:03:15,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 31 conjunts are in the unsatisfiable core [2021-06-05 08:03:15,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:03:15,311 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:15,311 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1618293645] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:15,311 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:03:15,311 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2021-06-05 08:03:15,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754385378] [2021-06-05 08:03:15,311 INFO L462 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-06-05 08:03:15,311 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:03:15,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-06-05 08:03:15,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=731, Unknown=0, NotChecked=0, Total=870 [2021-06-05 08:03:15,312 INFO L87 Difference]: Start difference. First operand 4003 states and 11118 transitions. Second operand has 30 states, 30 states have (on average 5.166666666666667) internal successors, (155), 30 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:15,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:03:15,981 INFO L93 Difference]: Finished difference Result 5821 states and 14957 transitions. [2021-06-05 08:03:15,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-05 08:03:15,981 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.166666666666667) internal successors, (155), 30 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 155 [2021-06-05 08:03:15,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:03:15,987 INFO L225 Difference]: With dead ends: 5821 [2021-06-05 08:03:15,988 INFO L226 Difference]: Without dead ends: 5551 [2021-06-05 08:03:15,988 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1115 ImplicationChecksByTransitivity, 709.6ms TimeCoverageRelationStatistics Valid=1129, Invalid=3563, Unknown=0, NotChecked=0, Total=4692 [2021-06-05 08:03:15,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5551 states. [2021-06-05 08:03:16,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5551 to 4078. [2021-06-05 08:03:16,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4078 states, 4077 states have (on average 2.7821927888153053) internal successors, (11343), 4077 states have internal predecessors, (11343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:16,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4078 states to 4078 states and 11343 transitions. [2021-06-05 08:03:16,039 INFO L78 Accepts]: Start accepts. Automaton has 4078 states and 11343 transitions. Word has length 155 [2021-06-05 08:03:16,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:03:16,040 INFO L482 AbstractCegarLoop]: Abstraction has 4078 states and 11343 transitions. [2021-06-05 08:03:16,040 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 5.166666666666667) internal successors, (155), 30 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:16,040 INFO L276 IsEmpty]: Start isEmpty. Operand 4078 states and 11343 transitions. [2021-06-05 08:03:16,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-06-05 08:03:16,043 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:03:16,043 INFO L521 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:03:16,243 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 308 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable312 [2021-06-05 08:03:16,244 INFO L430 AbstractCegarLoop]: === Iteration 314 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:03:16,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:03:16,244 INFO L82 PathProgramCache]: Analyzing trace with hash -1446533928, now seen corresponding path program 305 times [2021-06-05 08:03:16,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:03:16,244 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743385384] [2021-06-05 08:03:16,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:03:16,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:03:16,513 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:16,513 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:03:16,513 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743385384] [2021-06-05 08:03:16,513 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743385384] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:16,513 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2122812967] [2021-06-05 08:03:16,513 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 309 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 309 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:03:16,578 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2021-06-05 08:03:16,578 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:03:16,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 31 conjunts are in the unsatisfiable core [2021-06-05 08:03:16,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:03:16,762 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:16,762 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2122812967] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:16,762 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:03:16,762 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 31 [2021-06-05 08:03:16,762 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263483544] [2021-06-05 08:03:16,762 INFO L462 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-06-05 08:03:16,762 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:03:16,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-06-05 08:03:16,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=795, Unknown=0, NotChecked=0, Total=930 [2021-06-05 08:03:16,763 INFO L87 Difference]: Start difference. First operand 4078 states and 11343 transitions. Second operand has 31 states, 31 states have (on average 5.064516129032258) internal successors, (157), 31 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:17,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:03:17,576 INFO L93 Difference]: Finished difference Result 5846 states and 15082 transitions. [2021-06-05 08:03:17,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-06-05 08:03:17,577 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.064516129032258) internal successors, (157), 31 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 155 [2021-06-05 08:03:17,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:03:17,582 INFO L225 Difference]: With dead ends: 5846 [2021-06-05 08:03:17,582 INFO L226 Difference]: Without dead ends: 5576 [2021-06-05 08:03:17,582 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1144 ImplicationChecksByTransitivity, 853.9ms TimeCoverageRelationStatistics Valid=1157, Invalid=3813, Unknown=0, NotChecked=0, Total=4970 [2021-06-05 08:03:17,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5576 states. [2021-06-05 08:03:17,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5576 to 4153. [2021-06-05 08:03:17,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4153 states, 4152 states have (on average 2.786127167630058) internal successors, (11568), 4152 states have internal predecessors, (11568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:17,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4153 states to 4153 states and 11568 transitions. [2021-06-05 08:03:17,630 INFO L78 Accepts]: Start accepts. Automaton has 4153 states and 11568 transitions. Word has length 155 [2021-06-05 08:03:17,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:03:17,630 INFO L482 AbstractCegarLoop]: Abstraction has 4153 states and 11568 transitions. [2021-06-05 08:03:17,630 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 5.064516129032258) internal successors, (157), 31 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:17,630 INFO L276 IsEmpty]: Start isEmpty. Operand 4153 states and 11568 transitions. [2021-06-05 08:03:17,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-06-05 08:03:17,633 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:03:17,633 INFO L521 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:03:17,834 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 309 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable313 [2021-06-05 08:03:17,834 INFO L430 AbstractCegarLoop]: === Iteration 315 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:03:17,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:03:17,834 INFO L82 PathProgramCache]: Analyzing trace with hash -822158778, now seen corresponding path program 306 times [2021-06-05 08:03:17,834 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:03:17,834 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619280263] [2021-06-05 08:03:17,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:03:17,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:03:18,084 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:18,084 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:03:18,084 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619280263] [2021-06-05 08:03:18,084 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619280263] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:18,084 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [48695260] [2021-06-05 08:03:18,084 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 310 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 310 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:03:18,156 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2021-06-05 08:03:18,156 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:03:18,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 31 conjunts are in the unsatisfiable core [2021-06-05 08:03:18,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:03:18,325 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:18,325 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [48695260] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:18,325 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:03:18,325 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2021-06-05 08:03:18,325 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105087973] [2021-06-05 08:03:18,325 INFO L462 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-06-05 08:03:18,325 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:03:18,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-06-05 08:03:18,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=734, Unknown=0, NotChecked=0, Total=870 [2021-06-05 08:03:18,326 INFO L87 Difference]: Start difference. First operand 4153 states and 11568 transitions. Second operand has 30 states, 30 states have (on average 5.166666666666667) internal successors, (155), 30 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:19,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:03:19,072 INFO L93 Difference]: Finished difference Result 5871 states and 15207 transitions. [2021-06-05 08:03:19,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-06-05 08:03:19,072 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.166666666666667) internal successors, (155), 30 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 155 [2021-06-05 08:03:19,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:03:19,078 INFO L225 Difference]: With dead ends: 5871 [2021-06-05 08:03:19,078 INFO L226 Difference]: Without dead ends: 5601 [2021-06-05 08:03:19,079 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1224 ImplicationChecksByTransitivity, 755.4ms TimeCoverageRelationStatistics Valid=1207, Invalid=3763, Unknown=0, NotChecked=0, Total=4970 [2021-06-05 08:03:19,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5601 states. [2021-06-05 08:03:19,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5601 to 4228. [2021-06-05 08:03:19,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4228 states, 4227 states have (on average 2.7899219304471257) internal successors, (11793), 4227 states have internal predecessors, (11793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:19,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4228 states to 4228 states and 11793 transitions. [2021-06-05 08:03:19,129 INFO L78 Accepts]: Start accepts. Automaton has 4228 states and 11793 transitions. Word has length 155 [2021-06-05 08:03:19,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:03:19,129 INFO L482 AbstractCegarLoop]: Abstraction has 4228 states and 11793 transitions. [2021-06-05 08:03:19,129 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 5.166666666666667) internal successors, (155), 30 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:19,129 INFO L276 IsEmpty]: Start isEmpty. Operand 4228 states and 11793 transitions. [2021-06-05 08:03:19,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-06-05 08:03:19,133 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:03:19,133 INFO L521 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:03:19,333 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 310 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable314 [2021-06-05 08:03:19,333 INFO L430 AbstractCegarLoop]: === Iteration 316 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:03:19,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:03:19,334 INFO L82 PathProgramCache]: Analyzing trace with hash -13106922, now seen corresponding path program 307 times [2021-06-05 08:03:19,334 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:03:19,334 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163062598] [2021-06-05 08:03:19,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:03:19,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:03:19,593 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:19,594 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:03:19,594 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163062598] [2021-06-05 08:03:19,594 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163062598] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:19,594 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1765529866] [2021-06-05 08:03:19,594 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 311 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 311 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:03:19,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:03:19,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 31 conjunts are in the unsatisfiable core [2021-06-05 08:03:19,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:03:19,862 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:19,862 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1765529866] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:19,862 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:03:19,862 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 31 [2021-06-05 08:03:19,862 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083645307] [2021-06-05 08:03:19,862 INFO L462 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-06-05 08:03:19,863 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:03:19,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-06-05 08:03:19,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=797, Unknown=0, NotChecked=0, Total=930 [2021-06-05 08:03:19,863 INFO L87 Difference]: Start difference. First operand 4228 states and 11793 transitions. Second operand has 31 states, 31 states have (on average 5.064516129032258) internal successors, (157), 31 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:20,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:03:20,721 INFO L93 Difference]: Finished difference Result 5896 states and 15332 transitions. [2021-06-05 08:03:20,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-06-05 08:03:20,721 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.064516129032258) internal successors, (157), 31 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 155 [2021-06-05 08:03:20,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:03:20,727 INFO L225 Difference]: With dead ends: 5896 [2021-06-05 08:03:20,728 INFO L226 Difference]: Without dead ends: 5626 [2021-06-05 08:03:20,728 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1256 ImplicationChecksByTransitivity, 879.5ms TimeCoverageRelationStatistics Valid=1237, Invalid=4019, Unknown=0, NotChecked=0, Total=5256 [2021-06-05 08:03:20,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5626 states. [2021-06-05 08:03:20,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5626 to 4303. [2021-06-05 08:03:20,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4303 states, 4302 states have (on average 2.793584379358438) internal successors, (12018), 4302 states have internal predecessors, (12018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:20,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4303 states to 4303 states and 12018 transitions. [2021-06-05 08:03:20,783 INFO L78 Accepts]: Start accepts. Automaton has 4303 states and 12018 transitions. Word has length 155 [2021-06-05 08:03:20,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:03:20,783 INFO L482 AbstractCegarLoop]: Abstraction has 4303 states and 12018 transitions. [2021-06-05 08:03:20,783 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 5.064516129032258) internal successors, (157), 31 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:20,783 INFO L276 IsEmpty]: Start isEmpty. Operand 4303 states and 12018 transitions. [2021-06-05 08:03:20,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-06-05 08:03:20,787 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:03:20,787 INFO L521 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:03:20,987 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable315,311 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:03:20,988 INFO L430 AbstractCegarLoop]: === Iteration 317 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:03:20,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:03:20,988 INFO L82 PathProgramCache]: Analyzing trace with hash -1405057020, now seen corresponding path program 308 times [2021-06-05 08:03:20,988 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:03:20,988 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499385870] [2021-06-05 08:03:20,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:03:20,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:03:21,230 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:21,231 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:03:21,231 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499385870] [2021-06-05 08:03:21,231 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499385870] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:21,231 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1920524147] [2021-06-05 08:03:21,231 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 312 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 312 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:03:21,293 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 08:03:21,294 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:03:21,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 31 conjunts are in the unsatisfiable core [2021-06-05 08:03:21,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:03:21,459 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:21,459 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1920524147] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:21,459 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:03:21,459 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2021-06-05 08:03:21,459 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776921389] [2021-06-05 08:03:21,460 INFO L462 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-06-05 08:03:21,460 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:03:21,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-06-05 08:03:21,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=733, Unknown=0, NotChecked=0, Total=870 [2021-06-05 08:03:21,460 INFO L87 Difference]: Start difference. First operand 4303 states and 12018 transitions. Second operand has 30 states, 30 states have (on average 5.166666666666667) internal successors, (155), 30 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:22,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:03:22,241 INFO L93 Difference]: Finished difference Result 5921 states and 15457 transitions. [2021-06-05 08:03:22,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-06-05 08:03:22,241 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.166666666666667) internal successors, (155), 30 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 155 [2021-06-05 08:03:22,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:03:22,246 INFO L225 Difference]: With dead ends: 5921 [2021-06-05 08:03:22,246 INFO L226 Difference]: Without dead ends: 5651 [2021-06-05 08:03:22,247 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1337 ImplicationChecksByTransitivity, 768.5ms TimeCoverageRelationStatistics Valid=1301, Invalid=3955, Unknown=0, NotChecked=0, Total=5256 [2021-06-05 08:03:22,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5651 states. [2021-06-05 08:03:22,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5651 to 4378. [2021-06-05 08:03:22,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4378 states, 4377 states have (on average 2.7971213159698425) internal successors, (12243), 4377 states have internal predecessors, (12243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:22,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4378 states to 4378 states and 12243 transitions. [2021-06-05 08:03:22,300 INFO L78 Accepts]: Start accepts. Automaton has 4378 states and 12243 transitions. Word has length 155 [2021-06-05 08:03:22,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:03:22,300 INFO L482 AbstractCegarLoop]: Abstraction has 4378 states and 12243 transitions. [2021-06-05 08:03:22,300 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 5.166666666666667) internal successors, (155), 30 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:22,301 INFO L276 IsEmpty]: Start isEmpty. Operand 4378 states and 12243 transitions. [2021-06-05 08:03:22,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-06-05 08:03:22,304 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:03:22,304 INFO L521 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:03:22,505 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 312 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable316 [2021-06-05 08:03:22,505 INFO L430 AbstractCegarLoop]: === Iteration 318 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:03:22,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:03:22,505 INFO L82 PathProgramCache]: Analyzing trace with hash -1650134316, now seen corresponding path program 309 times [2021-06-05 08:03:22,505 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:03:22,505 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286888729] [2021-06-05 08:03:22,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:03:22,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:03:22,757 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:22,757 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:03:22,757 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286888729] [2021-06-05 08:03:22,758 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286888729] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:22,758 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [146810238] [2021-06-05 08:03:22,758 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 313 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 313 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:03:22,829 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2021-06-05 08:03:22,829 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:03:22,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 31 conjunts are in the unsatisfiable core [2021-06-05 08:03:22,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:03:23,005 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:23,006 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [146810238] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:23,006 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:03:23,006 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 31 [2021-06-05 08:03:23,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635485944] [2021-06-05 08:03:23,006 INFO L462 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-06-05 08:03:23,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:03:23,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-06-05 08:03:23,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=795, Unknown=0, NotChecked=0, Total=930 [2021-06-05 08:03:23,006 INFO L87 Difference]: Start difference. First operand 4378 states and 12243 transitions. Second operand has 31 states, 31 states have (on average 5.064516129032258) internal successors, (157), 31 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:23,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:03:23,929 INFO L93 Difference]: Finished difference Result 5946 states and 15582 transitions. [2021-06-05 08:03:23,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-06-05 08:03:23,930 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.064516129032258) internal successors, (157), 31 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 155 [2021-06-05 08:03:23,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:03:23,936 INFO L225 Difference]: With dead ends: 5946 [2021-06-05 08:03:23,936 INFO L226 Difference]: Without dead ends: 5676 [2021-06-05 08:03:23,937 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1372 ImplicationChecksByTransitivity, 918.0ms TimeCoverageRelationStatistics Valid=1333, Invalid=4217, Unknown=0, NotChecked=0, Total=5550 [2021-06-05 08:03:23,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5676 states. [2021-06-05 08:03:23,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5676 to 4453. [2021-06-05 08:03:23,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4453 states, 4452 states have (on average 2.8005390835579513) internal successors, (12468), 4452 states have internal predecessors, (12468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:23,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4453 states to 4453 states and 12468 transitions. [2021-06-05 08:03:23,994 INFO L78 Accepts]: Start accepts. Automaton has 4453 states and 12468 transitions. Word has length 155 [2021-06-05 08:03:23,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:03:23,994 INFO L482 AbstractCegarLoop]: Abstraction has 4453 states and 12468 transitions. [2021-06-05 08:03:23,995 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 5.064516129032258) internal successors, (157), 31 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:23,995 INFO L276 IsEmpty]: Start isEmpty. Operand 4453 states and 12468 transitions. [2021-06-05 08:03:23,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-06-05 08:03:23,998 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:03:23,998 INFO L521 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:03:24,199 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable317,313 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:03:24,199 INFO L430 AbstractCegarLoop]: === Iteration 319 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:03:24,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:03:24,199 INFO L82 PathProgramCache]: Analyzing trace with hash -2026984638, now seen corresponding path program 310 times [2021-06-05 08:03:24,199 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:03:24,199 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166584343] [2021-06-05 08:03:24,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:03:24,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:03:24,441 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:24,441 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:03:24,441 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166584343] [2021-06-05 08:03:24,442 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166584343] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:24,442 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [584147751] [2021-06-05 08:03:24,442 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 314 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 314 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:03:24,504 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 08:03:24,504 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:03:24,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 31 conjunts are in the unsatisfiable core [2021-06-05 08:03:24,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:03:24,696 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:24,697 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [584147751] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:24,697 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:03:24,697 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2021-06-05 08:03:24,697 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771601673] [2021-06-05 08:03:24,697 INFO L462 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-06-05 08:03:24,697 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:03:24,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-06-05 08:03:24,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=728, Unknown=0, NotChecked=0, Total=870 [2021-06-05 08:03:24,698 INFO L87 Difference]: Start difference. First operand 4453 states and 12468 transitions. Second operand has 30 states, 30 states have (on average 5.166666666666667) internal successors, (155), 30 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:25,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:03:25,533 INFO L93 Difference]: Finished difference Result 5971 states and 15707 transitions. [2021-06-05 08:03:25,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-06-05 08:03:25,533 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.166666666666667) internal successors, (155), 30 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 155 [2021-06-05 08:03:25,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:03:25,539 INFO L225 Difference]: With dead ends: 5971 [2021-06-05 08:03:25,539 INFO L226 Difference]: Without dead ends: 5701 [2021-06-05 08:03:25,539 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1454 ImplicationChecksByTransitivity, 791.3ms TimeCoverageRelationStatistics Valid=1411, Invalid=4139, Unknown=0, NotChecked=0, Total=5550 [2021-06-05 08:03:25,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5701 states. [2021-06-05 08:03:25,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5701 to 4528. [2021-06-05 08:03:25,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4528 states, 4527 states have (on average 2.803843605036448) internal successors, (12693), 4527 states have internal predecessors, (12693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:25,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4528 states to 4528 states and 12693 transitions. [2021-06-05 08:03:25,589 INFO L78 Accepts]: Start accepts. Automaton has 4528 states and 12693 transitions. Word has length 155 [2021-06-05 08:03:25,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:03:25,589 INFO L482 AbstractCegarLoop]: Abstraction has 4528 states and 12693 transitions. [2021-06-05 08:03:25,589 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 5.166666666666667) internal successors, (155), 30 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:25,589 INFO L276 IsEmpty]: Start isEmpty. Operand 4528 states and 12693 transitions. [2021-06-05 08:03:25,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-06-05 08:03:25,592 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:03:25,592 INFO L521 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:03:25,793 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 314 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable318 [2021-06-05 08:03:25,793 INFO L430 AbstractCegarLoop]: === Iteration 320 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:03:25,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:03:25,793 INFO L82 PathProgramCache]: Analyzing trace with hash -700229102, now seen corresponding path program 311 times [2021-06-05 08:03:25,793 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:03:25,793 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732966794] [2021-06-05 08:03:25,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:03:25,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:03:26,047 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:26,047 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:03:26,047 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732966794] [2021-06-05 08:03:26,047 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732966794] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:26,047 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1318051638] [2021-06-05 08:03:26,048 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 315 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 315 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:03:26,111 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2021-06-05 08:03:26,111 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:03:26,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 31 conjunts are in the unsatisfiable core [2021-06-05 08:03:26,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:03:26,289 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:26,290 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1318051638] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:26,290 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:03:26,290 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 31 [2021-06-05 08:03:26,290 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624885954] [2021-06-05 08:03:26,292 INFO L462 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-06-05 08:03:26,293 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:03:26,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-06-05 08:03:26,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=789, Unknown=0, NotChecked=0, Total=930 [2021-06-05 08:03:26,293 INFO L87 Difference]: Start difference. First operand 4528 states and 12693 transitions. Second operand has 31 states, 31 states have (on average 5.064516129032258) internal successors, (157), 31 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:27,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:03:27,290 INFO L93 Difference]: Finished difference Result 5996 states and 15832 transitions. [2021-06-05 08:03:27,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-06-05 08:03:27,291 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.064516129032258) internal successors, (157), 31 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 155 [2021-06-05 08:03:27,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:03:27,296 INFO L225 Difference]: With dead ends: 5996 [2021-06-05 08:03:27,296 INFO L226 Difference]: Without dead ends: 5726 [2021-06-05 08:03:27,297 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1492 ImplicationChecksByTransitivity, 976.1ms TimeCoverageRelationStatistics Valid=1445, Invalid=4407, Unknown=0, NotChecked=0, Total=5852 [2021-06-05 08:03:27,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5726 states. [2021-06-05 08:03:27,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5726 to 4603. [2021-06-05 08:03:27,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4603 states, 4602 states have (on average 2.8070404172099086) internal successors, (12918), 4602 states have internal predecessors, (12918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:27,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4603 states to 4603 states and 12918 transitions. [2021-06-05 08:03:27,346 INFO L78 Accepts]: Start accepts. Automaton has 4603 states and 12918 transitions. Word has length 155 [2021-06-05 08:03:27,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:03:27,347 INFO L482 AbstractCegarLoop]: Abstraction has 4603 states and 12918 transitions. [2021-06-05 08:03:27,347 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 5.064516129032258) internal successors, (157), 31 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:27,347 INFO L276 IsEmpty]: Start isEmpty. Operand 4603 states and 12918 transitions. [2021-06-05 08:03:27,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-06-05 08:03:27,350 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:03:27,350 INFO L521 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:03:27,550 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable319,315 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:03:27,551 INFO L430 AbstractCegarLoop]: === Iteration 321 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:03:27,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:03:27,551 INFO L82 PathProgramCache]: Analyzing trace with hash -246012928, now seen corresponding path program 312 times [2021-06-05 08:03:27,551 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:03:27,551 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806941120] [2021-06-05 08:03:27,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:03:27,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:03:27,788 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:27,788 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:03:27,788 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806941120] [2021-06-05 08:03:27,788 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806941120] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:27,788 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [359026870] [2021-06-05 08:03:27,788 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 316 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 316 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:03:27,860 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2021-06-05 08:03:27,860 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:03:27,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 31 conjunts are in the unsatisfiable core [2021-06-05 08:03:27,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:03:28,024 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:28,025 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [359026870] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:28,025 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:03:28,025 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2021-06-05 08:03:28,025 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515645044] [2021-06-05 08:03:28,025 INFO L462 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-06-05 08:03:28,025 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:03:28,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-06-05 08:03:28,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=719, Unknown=0, NotChecked=0, Total=870 [2021-06-05 08:03:28,026 INFO L87 Difference]: Start difference. First operand 4603 states and 12918 transitions. Second operand has 30 states, 30 states have (on average 5.166666666666667) internal successors, (155), 30 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:28,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:03:28,868 INFO L93 Difference]: Finished difference Result 6021 states and 15957 transitions. [2021-06-05 08:03:28,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-06-05 08:03:28,868 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.166666666666667) internal successors, (155), 30 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 155 [2021-06-05 08:03:28,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:03:28,874 INFO L225 Difference]: With dead ends: 6021 [2021-06-05 08:03:28,874 INFO L226 Difference]: Without dead ends: 5751 [2021-06-05 08:03:28,874 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1575 ImplicationChecksByTransitivity, 816.5ms TimeCoverageRelationStatistics Valid=1537, Invalid=4315, Unknown=0, NotChecked=0, Total=5852 [2021-06-05 08:03:28,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5751 states. [2021-06-05 08:03:28,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5751 to 4678. [2021-06-05 08:03:28,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4678 states, 4677 states have (on average 2.8101347017318794) internal successors, (13143), 4677 states have internal predecessors, (13143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:28,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4678 states to 4678 states and 13143 transitions. [2021-06-05 08:03:28,925 INFO L78 Accepts]: Start accepts. Automaton has 4678 states and 13143 transitions. Word has length 155 [2021-06-05 08:03:28,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:03:28,925 INFO L482 AbstractCegarLoop]: Abstraction has 4678 states and 13143 transitions. [2021-06-05 08:03:28,925 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 5.166666666666667) internal successors, (155), 30 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:28,925 INFO L276 IsEmpty]: Start isEmpty. Operand 4678 states and 13143 transitions. [2021-06-05 08:03:28,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-06-05 08:03:28,929 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:03:28,929 INFO L521 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:03:29,129 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable320,316 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:03:29,129 INFO L430 AbstractCegarLoop]: === Iteration 322 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:03:29,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:03:29,130 INFO L82 PathProgramCache]: Analyzing trace with hash 752883408, now seen corresponding path program 313 times [2021-06-05 08:03:29,130 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:03:29,130 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402024308] [2021-06-05 08:03:29,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:03:29,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:03:29,397 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:29,397 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:03:29,397 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402024308] [2021-06-05 08:03:29,397 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402024308] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:29,397 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1330639833] [2021-06-05 08:03:29,397 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 317 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 317 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:03:29,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:03:29,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 31 conjunts are in the unsatisfiable core [2021-06-05 08:03:29,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:03:29,645 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:29,645 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1330639833] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:29,645 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:03:29,645 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 31 [2021-06-05 08:03:29,645 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375467304] [2021-06-05 08:03:29,645 INFO L462 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-06-05 08:03:29,645 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:03:29,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-06-05 08:03:29,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=779, Unknown=0, NotChecked=0, Total=930 [2021-06-05 08:03:29,646 INFO L87 Difference]: Start difference. First operand 4678 states and 13143 transitions. Second operand has 31 states, 31 states have (on average 5.064516129032258) internal successors, (157), 31 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:30,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:03:30,692 INFO L93 Difference]: Finished difference Result 6046 states and 16082 transitions. [2021-06-05 08:03:30,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-06-05 08:03:30,692 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.064516129032258) internal successors, (157), 31 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 155 [2021-06-05 08:03:30,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:03:30,698 INFO L225 Difference]: With dead ends: 6046 [2021-06-05 08:03:30,698 INFO L226 Difference]: Without dead ends: 5776 [2021-06-05 08:03:30,698 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1616 ImplicationChecksByTransitivity, 991.2ms TimeCoverageRelationStatistics Valid=1573, Invalid=4589, Unknown=0, NotChecked=0, Total=6162 [2021-06-05 08:03:30,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5776 states. [2021-06-05 08:03:30,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5776 to 4753. [2021-06-05 08:03:30,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4753 states, 4752 states have (on average 2.813131313131313) internal successors, (13368), 4752 states have internal predecessors, (13368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:30,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4753 states to 4753 states and 13368 transitions. [2021-06-05 08:03:30,749 INFO L78 Accepts]: Start accepts. Automaton has 4753 states and 13368 transitions. Word has length 155 [2021-06-05 08:03:30,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:03:30,749 INFO L482 AbstractCegarLoop]: Abstraction has 4753 states and 13368 transitions. [2021-06-05 08:03:30,749 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 5.064516129032258) internal successors, (157), 31 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:30,749 INFO L276 IsEmpty]: Start isEmpty. Operand 4753 states and 13368 transitions. [2021-06-05 08:03:30,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-06-05 08:03:30,753 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:03:30,753 INFO L521 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:03:30,953 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 317 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable321 [2021-06-05 08:03:30,954 INFO L430 AbstractCegarLoop]: === Iteration 323 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:03:30,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:03:30,954 INFO L82 PathProgramCache]: Analyzing trace with hash -1126444482, now seen corresponding path program 314 times [2021-06-05 08:03:30,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:03:30,954 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771941272] [2021-06-05 08:03:30,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:03:30,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:03:31,189 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:31,190 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:03:31,190 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771941272] [2021-06-05 08:03:31,190 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771941272] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:31,190 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1527124841] [2021-06-05 08:03:31,190 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 318 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 318 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:03:31,251 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 08:03:31,251 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:03:31,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 31 conjunts are in the unsatisfiable core [2021-06-05 08:03:31,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:03:31,424 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:31,425 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1527124841] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:31,425 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:03:31,425 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2021-06-05 08:03:31,425 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029796440] [2021-06-05 08:03:31,425 INFO L462 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-06-05 08:03:31,425 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:03:31,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-06-05 08:03:31,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=706, Unknown=0, NotChecked=0, Total=870 [2021-06-05 08:03:31,426 INFO L87 Difference]: Start difference. First operand 4753 states and 13368 transitions. Second operand has 30 states, 30 states have (on average 5.166666666666667) internal successors, (155), 30 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:32,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:03:32,333 INFO L93 Difference]: Finished difference Result 6071 states and 16207 transitions. [2021-06-05 08:03:32,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-06-05 08:03:32,334 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.166666666666667) internal successors, (155), 30 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 155 [2021-06-05 08:03:32,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:03:32,339 INFO L225 Difference]: With dead ends: 6071 [2021-06-05 08:03:32,339 INFO L226 Difference]: Without dead ends: 5801 [2021-06-05 08:03:32,340 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1700 ImplicationChecksByTransitivity, 860.5ms TimeCoverageRelationStatistics Valid=1679, Invalid=4483, Unknown=0, NotChecked=0, Total=6162 [2021-06-05 08:03:32,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5801 states. [2021-06-05 08:03:32,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5801 to 4828. [2021-06-05 08:03:32,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4828 states, 4827 states have (on average 2.8160348042262275) internal successors, (13593), 4827 states have internal predecessors, (13593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:32,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4828 states to 4828 states and 13593 transitions. [2021-06-05 08:03:32,399 INFO L78 Accepts]: Start accepts. Automaton has 4828 states and 13593 transitions. Word has length 155 [2021-06-05 08:03:32,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:03:32,399 INFO L482 AbstractCegarLoop]: Abstraction has 4828 states and 13593 transitions. [2021-06-05 08:03:32,399 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 5.166666666666667) internal successors, (155), 30 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:32,399 INFO L276 IsEmpty]: Start isEmpty. Operand 4828 states and 13593 transitions. [2021-06-05 08:03:32,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-06-05 08:03:32,403 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:03:32,403 INFO L521 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:03:32,603 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 318 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable322 [2021-06-05 08:03:32,603 INFO L430 AbstractCegarLoop]: === Iteration 324 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:03:32,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:03:32,604 INFO L82 PathProgramCache]: Analyzing trace with hash 903874830, now seen corresponding path program 315 times [2021-06-05 08:03:32,604 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:03:32,604 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767201413] [2021-06-05 08:03:32,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:03:32,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:03:32,843 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:32,843 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:03:32,843 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767201413] [2021-06-05 08:03:32,843 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767201413] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:32,843 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [329237907] [2021-06-05 08:03:32,843 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 319 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 319 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:03:32,915 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2021-06-05 08:03:32,915 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:03:32,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 31 conjunts are in the unsatisfiable core [2021-06-05 08:03:32,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:03:33,091 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:33,091 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [329237907] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:33,091 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:03:33,091 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 31 [2021-06-05 08:03:33,091 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408270164] [2021-06-05 08:03:33,091 INFO L462 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-06-05 08:03:33,092 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:03:33,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-06-05 08:03:33,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=765, Unknown=0, NotChecked=0, Total=930 [2021-06-05 08:03:33,092 INFO L87 Difference]: Start difference. First operand 4828 states and 13593 transitions. Second operand has 31 states, 31 states have (on average 5.064516129032258) internal successors, (157), 31 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:34,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:03:34,332 INFO L93 Difference]: Finished difference Result 6096 states and 16332 transitions. [2021-06-05 08:03:34,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-06-05 08:03:34,332 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.064516129032258) internal successors, (157), 31 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 155 [2021-06-05 08:03:34,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:03:34,337 INFO L225 Difference]: With dead ends: 6096 [2021-06-05 08:03:34,337 INFO L226 Difference]: Without dead ends: 5826 [2021-06-05 08:03:34,338 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1744 ImplicationChecksByTransitivity, 1127.3ms TimeCoverageRelationStatistics Valid=1717, Invalid=4763, Unknown=0, NotChecked=0, Total=6480 [2021-06-05 08:03:34,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5826 states. [2021-06-05 08:03:34,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5826 to 4903. [2021-06-05 08:03:34,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4903 states, 4902 states have (on average 2.8188494492044063) internal successors, (13818), 4902 states have internal predecessors, (13818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:34,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4903 states to 4903 states and 13818 transitions. [2021-06-05 08:03:34,392 INFO L78 Accepts]: Start accepts. Automaton has 4903 states and 13818 transitions. Word has length 155 [2021-06-05 08:03:34,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:03:34,392 INFO L482 AbstractCegarLoop]: Abstraction has 4903 states and 13818 transitions. [2021-06-05 08:03:34,392 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 5.064516129032258) internal successors, (157), 31 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:34,392 INFO L276 IsEmpty]: Start isEmpty. Operand 4903 states and 13818 transitions. [2021-06-05 08:03:34,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-06-05 08:03:34,396 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:03:34,396 INFO L521 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:03:34,596 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 319 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable323 [2021-06-05 08:03:34,596 INFO L430 AbstractCegarLoop]: === Iteration 325 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:03:34,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:03:34,597 INFO L82 PathProgramCache]: Analyzing trace with hash 1518114300, now seen corresponding path program 316 times [2021-06-05 08:03:34,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:03:34,597 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096836848] [2021-06-05 08:03:34,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:03:34,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:03:34,832 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:34,832 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:03:34,832 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096836848] [2021-06-05 08:03:34,832 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096836848] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:34,832 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1931360993] [2021-06-05 08:03:34,832 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 320 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 320 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:03:34,892 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 08:03:34,892 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:03:34,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 31 conjunts are in the unsatisfiable core [2021-06-05 08:03:34,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:03:35,046 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:35,047 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1931360993] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:35,047 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:03:35,047 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2021-06-05 08:03:35,047 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313939670] [2021-06-05 08:03:35,047 INFO L462 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-06-05 08:03:35,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:03:35,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-06-05 08:03:35,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=689, Unknown=0, NotChecked=0, Total=870 [2021-06-05 08:03:35,047 INFO L87 Difference]: Start difference. First operand 4903 states and 13818 transitions. Second operand has 30 states, 30 states have (on average 5.166666666666667) internal successors, (155), 30 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:35,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:03:35,992 INFO L93 Difference]: Finished difference Result 6166 states and 16577 transitions. [2021-06-05 08:03:35,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-06-05 08:03:35,993 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.166666666666667) internal successors, (155), 30 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 155 [2021-06-05 08:03:35,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:03:35,998 INFO L225 Difference]: With dead ends: 6166 [2021-06-05 08:03:35,998 INFO L226 Difference]: Without dead ends: 5896 [2021-06-05 08:03:35,999 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1829 ImplicationChecksByTransitivity, 881.0ms TimeCoverageRelationStatistics Valid=1837, Invalid=4643, Unknown=0, NotChecked=0, Total=6480 [2021-06-05 08:03:36,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5896 states. [2021-06-05 08:03:36,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5896 to 4978. [2021-06-05 08:03:36,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4978 states, 4977 states have (on average 2.824593128390597) internal successors, (14058), 4977 states have internal predecessors, (14058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:36,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4978 states to 4978 states and 14058 transitions. [2021-06-05 08:03:36,063 INFO L78 Accepts]: Start accepts. Automaton has 4978 states and 14058 transitions. Word has length 155 [2021-06-05 08:03:36,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:03:36,064 INFO L482 AbstractCegarLoop]: Abstraction has 4978 states and 14058 transitions. [2021-06-05 08:03:36,064 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 5.166666666666667) internal successors, (155), 30 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:36,064 INFO L276 IsEmpty]: Start isEmpty. Operand 4978 states and 14058 transitions. [2021-06-05 08:03:36,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-06-05 08:03:36,068 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:03:36,068 INFO L521 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:03:36,268 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 320 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable324 [2021-06-05 08:03:36,269 INFO L430 AbstractCegarLoop]: === Iteration 326 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:03:36,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:03:36,269 INFO L82 PathProgramCache]: Analyzing trace with hash -197127988, now seen corresponding path program 317 times [2021-06-05 08:03:36,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:03:36,269 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301581696] [2021-06-05 08:03:36,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:03:36,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:03:36,555 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:36,555 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:03:36,555 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301581696] [2021-06-05 08:03:36,555 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301581696] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:36,555 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2063688319] [2021-06-05 08:03:36,555 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 321 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 321 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:03:36,620 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2021-06-05 08:03:36,621 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:03:36,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 31 conjunts are in the unsatisfiable core [2021-06-05 08:03:36,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:03:36,798 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:36,798 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2063688319] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:36,798 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:03:36,798 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 31 [2021-06-05 08:03:36,798 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357272572] [2021-06-05 08:03:36,799 INFO L462 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-06-05 08:03:36,799 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:03:36,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-06-05 08:03:36,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=747, Unknown=0, NotChecked=0, Total=930 [2021-06-05 08:03:36,799 INFO L87 Difference]: Start difference. First operand 4978 states and 14058 transitions. Second operand has 31 states, 31 states have (on average 5.064516129032258) internal successors, (157), 31 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:38,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:03:38,007 INFO L93 Difference]: Finished difference Result 6744 states and 18203 transitions. [2021-06-05 08:03:38,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-06-05 08:03:38,007 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.064516129032258) internal successors, (157), 31 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 155 [2021-06-05 08:03:38,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:03:38,014 INFO L225 Difference]: With dead ends: 6744 [2021-06-05 08:03:38,014 INFO L226 Difference]: Without dead ends: 6121 [2021-06-05 08:03:38,015 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1979 ImplicationChecksByTransitivity, 1167.6ms TimeCoverageRelationStatistics Valid=1898, Invalid=5242, Unknown=0, NotChecked=0, Total=7140 [2021-06-05 08:03:38,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6121 states. [2021-06-05 08:03:38,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6121 to 5053. [2021-06-05 08:03:38,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5053 states, 5052 states have (on average 2.8281868566904196) internal successors, (14288), 5052 states have internal predecessors, (14288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:38,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5053 states to 5053 states and 14288 transitions. [2021-06-05 08:03:38,072 INFO L78 Accepts]: Start accepts. Automaton has 5053 states and 14288 transitions. Word has length 155 [2021-06-05 08:03:38,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:03:38,072 INFO L482 AbstractCegarLoop]: Abstraction has 5053 states and 14288 transitions. [2021-06-05 08:03:38,072 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 5.064516129032258) internal successors, (157), 31 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:38,072 INFO L276 IsEmpty]: Start isEmpty. Operand 5053 states and 14288 transitions. [2021-06-05 08:03:38,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-06-05 08:03:38,076 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:03:38,076 INFO L521 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:03:38,276 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable325,321 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:03:38,277 INFO L430 AbstractCegarLoop]: === Iteration 327 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:03:38,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:03:38,277 INFO L82 PathProgramCache]: Analyzing trace with hash -1229775590, now seen corresponding path program 318 times [2021-06-05 08:03:38,277 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:03:38,277 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888113600] [2021-06-05 08:03:38,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:03:38,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:03:38,518 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:38,518 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:03:38,518 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888113600] [2021-06-05 08:03:38,518 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888113600] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:38,518 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1471967300] [2021-06-05 08:03:38,518 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 322 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 322 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:03:38,590 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2021-06-05 08:03:38,590 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:03:38,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 31 conjunts are in the unsatisfiable core [2021-06-05 08:03:38,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:03:38,744 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:38,744 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1471967300] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:38,744 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:03:38,744 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2021-06-05 08:03:38,744 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440725436] [2021-06-05 08:03:38,744 INFO L462 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-06-05 08:03:38,744 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:03:38,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-06-05 08:03:38,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=668, Unknown=0, NotChecked=0, Total=870 [2021-06-05 08:03:38,745 INFO L87 Difference]: Start difference. First operand 5053 states and 14288 transitions. Second operand has 30 states, 30 states have (on average 5.166666666666667) internal successors, (155), 30 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:39,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:03:39,720 INFO L93 Difference]: Finished difference Result 6948 states and 18871 transitions. [2021-06-05 08:03:39,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-06-05 08:03:39,720 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.166666666666667) internal successors, (155), 30 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 155 [2021-06-05 08:03:39,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:03:39,728 INFO L225 Difference]: With dead ends: 6948 [2021-06-05 08:03:39,728 INFO L226 Difference]: Without dead ends: 6678 [2021-06-05 08:03:39,729 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1961 ImplicationChecksByTransitivity, 937.6ms TimeCoverageRelationStatistics Valid=2012, Invalid=4794, Unknown=0, NotChecked=0, Total=6806 [2021-06-05 08:03:39,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6678 states. [2021-06-05 08:03:39,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6678 to 5233. [2021-06-05 08:03:39,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5233 states, 5232 states have (on average 2.8377293577981653) internal successors, (14847), 5232 states have internal predecessors, (14847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:39,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5233 states to 5233 states and 14847 transitions. [2021-06-05 08:03:39,792 INFO L78 Accepts]: Start accepts. Automaton has 5233 states and 14847 transitions. Word has length 155 [2021-06-05 08:03:39,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:03:39,792 INFO L482 AbstractCegarLoop]: Abstraction has 5233 states and 14847 transitions. [2021-06-05 08:03:39,792 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 5.166666666666667) internal successors, (155), 30 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:39,792 INFO L276 IsEmpty]: Start isEmpty. Operand 5233 states and 14847 transitions. [2021-06-05 08:03:39,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-06-05 08:03:39,796 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:03:39,796 INFO L521 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:03:39,996 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 322 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable326 [2021-06-05 08:03:39,997 INFO L430 AbstractCegarLoop]: === Iteration 328 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:03:39,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:03:39,997 INFO L82 PathProgramCache]: Analyzing trace with hash -1207432340, now seen corresponding path program 319 times [2021-06-05 08:03:39,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:03:39,997 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649296154] [2021-06-05 08:03:39,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:03:40,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:03:40,248 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:40,249 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:03:40,249 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649296154] [2021-06-05 08:03:40,249 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649296154] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:40,249 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1443751983] [2021-06-05 08:03:40,249 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 323 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 323 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:03:40,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:03:40,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 31 conjunts are in the unsatisfiable core [2021-06-05 08:03:40,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:03:40,486 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:40,486 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1443751983] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:40,486 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:03:40,486 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 31 [2021-06-05 08:03:40,486 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865223539] [2021-06-05 08:03:40,487 INFO L462 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-06-05 08:03:40,487 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:03:40,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-06-05 08:03:40,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=725, Unknown=0, NotChecked=0, Total=930 [2021-06-05 08:03:40,487 INFO L87 Difference]: Start difference. First operand 5233 states and 14847 transitions. Second operand has 31 states, 31 states have (on average 5.064516129032258) internal successors, (157), 31 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:41,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:03:41,644 INFO L93 Difference]: Finished difference Result 6410 states and 17521 transitions. [2021-06-05 08:03:41,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-06-05 08:03:41,645 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.064516129032258) internal successors, (157), 31 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 155 [2021-06-05 08:03:41,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:03:41,650 INFO L225 Difference]: With dead ends: 6410 [2021-06-05 08:03:41,650 INFO L226 Difference]: Without dead ends: 5921 [2021-06-05 08:03:41,650 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2012 ImplicationChecksByTransitivity, 1132.1ms TimeCoverageRelationStatistics Valid=2056, Invalid=5084, Unknown=0, NotChecked=0, Total=7140 [2021-06-05 08:03:41,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5921 states. [2021-06-05 08:03:41,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5921 to 5178. [2021-06-05 08:03:41,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5178 states, 5177 states have (on average 2.836198570600734) internal successors, (14683), 5177 states have internal predecessors, (14683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:41,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5178 states to 5178 states and 14683 transitions. [2021-06-05 08:03:41,705 INFO L78 Accepts]: Start accepts. Automaton has 5178 states and 14683 transitions. Word has length 155 [2021-06-05 08:03:41,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:03:41,705 INFO L482 AbstractCegarLoop]: Abstraction has 5178 states and 14683 transitions. [2021-06-05 08:03:41,705 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 5.064516129032258) internal successors, (157), 31 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:41,705 INFO L276 IsEmpty]: Start isEmpty. Operand 5178 states and 14683 transitions. [2021-06-05 08:03:41,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-06-05 08:03:41,709 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:03:41,709 INFO L521 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:03:41,910 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable327,323 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:03:41,910 INFO L430 AbstractCegarLoop]: === Iteration 329 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:03:41,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:03:41,910 INFO L82 PathProgramCache]: Analyzing trace with hash -998997856, now seen corresponding path program 320 times [2021-06-05 08:03:41,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:03:41,910 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582596097] [2021-06-05 08:03:41,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:03:41,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:03:42,218 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:42,218 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:03:42,219 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582596097] [2021-06-05 08:03:42,219 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582596097] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:42,219 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [985493095] [2021-06-05 08:03:42,219 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 324 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 324 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:03:42,283 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 08:03:42,283 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:03:42,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 33 conjunts are in the unsatisfiable core [2021-06-05 08:03:42,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:03:42,498 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:42,499 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [985493095] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:42,499 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:03:42,499 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 34 [2021-06-05 08:03:42,499 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374870565] [2021-06-05 08:03:42,499 INFO L462 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-06-05 08:03:42,499 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:03:42,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-06-05 08:03:42,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=252, Invalid=870, Unknown=0, NotChecked=0, Total=1122 [2021-06-05 08:03:42,500 INFO L87 Difference]: Start difference. First operand 5178 states and 14683 transitions. Second operand has 34 states, 34 states have (on average 5.529411764705882) internal successors, (188), 34 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:43,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:03:43,130 INFO L93 Difference]: Finished difference Result 6468 states and 17583 transitions. [2021-06-05 08:03:43,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-05 08:03:43,130 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 5.529411764705882) internal successors, (188), 34 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 160 [2021-06-05 08:03:43,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:03:43,138 INFO L225 Difference]: With dead ends: 6468 [2021-06-05 08:03:43,138 INFO L226 Difference]: Without dead ends: 6134 [2021-06-05 08:03:43,138 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 876 ImplicationChecksByTransitivity, 748.7ms TimeCoverageRelationStatistics Valid=1165, Invalid=3125, Unknown=0, NotChecked=0, Total=4290 [2021-06-05 08:03:43,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6134 states. [2021-06-05 08:03:43,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6134 to 5263. [2021-06-05 08:03:43,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5263 states, 5262 states have (on average 2.822690992018244) internal successors, (14853), 5262 states have internal predecessors, (14853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:43,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5263 states to 5263 states and 14853 transitions. [2021-06-05 08:03:43,204 INFO L78 Accepts]: Start accepts. Automaton has 5263 states and 14853 transitions. Word has length 160 [2021-06-05 08:03:43,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:03:43,205 INFO L482 AbstractCegarLoop]: Abstraction has 5263 states and 14853 transitions. [2021-06-05 08:03:43,205 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 5.529411764705882) internal successors, (188), 34 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:43,205 INFO L276 IsEmpty]: Start isEmpty. Operand 5263 states and 14853 transitions. [2021-06-05 08:03:43,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-06-05 08:03:43,209 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:03:43,209 INFO L521 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:03:43,410 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 324 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable328 [2021-06-05 08:03:43,410 INFO L430 AbstractCegarLoop]: === Iteration 330 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:03:43,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:03:43,410 INFO L82 PathProgramCache]: Analyzing trace with hash 595396196, now seen corresponding path program 321 times [2021-06-05 08:03:43,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:03:43,410 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471294854] [2021-06-05 08:03:43,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:03:43,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:03:43,756 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:43,756 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:03:43,756 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471294854] [2021-06-05 08:03:43,756 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471294854] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:43,756 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1286281798] [2021-06-05 08:03:43,756 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 325 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 325 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:03:43,832 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2021-06-05 08:03:43,832 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:03:43,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 32 conjunts are in the unsatisfiable core [2021-06-05 08:03:43,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:03:44,016 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:44,016 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1286281798] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:44,016 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:03:44,016 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 31 [2021-06-05 08:03:44,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127188046] [2021-06-05 08:03:44,017 INFO L462 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-06-05 08:03:44,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:03:44,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-06-05 08:03:44,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=216, Invalid=714, Unknown=0, NotChecked=0, Total=930 [2021-06-05 08:03:44,017 INFO L87 Difference]: Start difference. First operand 5263 states and 14853 transitions. Second operand has 31 states, 31 states have (on average 5.161290322580645) internal successors, (160), 31 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:44,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:03:44,542 INFO L93 Difference]: Finished difference Result 7561 states and 19577 transitions. [2021-06-05 08:03:44,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-06-05 08:03:44,542 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.161290322580645) internal successors, (160), 31 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 160 [2021-06-05 08:03:44,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:03:44,551 INFO L225 Difference]: With dead ends: 7561 [2021-06-05 08:03:44,551 INFO L226 Difference]: Without dead ends: 7291 [2021-06-05 08:03:44,552 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 624 ImplicationChecksByTransitivity, 687.9ms TimeCoverageRelationStatistics Valid=988, Invalid=2552, Unknown=0, NotChecked=0, Total=3540 [2021-06-05 08:03:44,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7291 states. [2021-06-05 08:03:44,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7291 to 5278. [2021-06-05 08:03:44,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5278 states, 5277 states have (on average 2.8203524729960203) internal successors, (14883), 5277 states have internal predecessors, (14883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:44,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5278 states to 5278 states and 14883 transitions. [2021-06-05 08:03:44,615 INFO L78 Accepts]: Start accepts. Automaton has 5278 states and 14883 transitions. Word has length 160 [2021-06-05 08:03:44,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:03:44,615 INFO L482 AbstractCegarLoop]: Abstraction has 5278 states and 14883 transitions. [2021-06-05 08:03:44,616 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 5.161290322580645) internal successors, (160), 31 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:44,616 INFO L276 IsEmpty]: Start isEmpty. Operand 5278 states and 14883 transitions. [2021-06-05 08:03:44,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-06-05 08:03:44,620 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:03:44,620 INFO L521 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:03:44,820 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable329,325 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:03:44,820 INFO L430 AbstractCegarLoop]: === Iteration 331 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:03:44,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:03:44,821 INFO L82 PathProgramCache]: Analyzing trace with hash 94082356, now seen corresponding path program 322 times [2021-06-05 08:03:44,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:03:44,821 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688205705] [2021-06-05 08:03:44,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:03:44,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:03:45,152 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:45,152 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:03:45,152 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688205705] [2021-06-05 08:03:45,152 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688205705] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:45,152 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [232186099] [2021-06-05 08:03:45,152 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 326 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 326 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:03:45,216 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 08:03:45,216 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:03:45,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 32 conjunts are in the unsatisfiable core [2021-06-05 08:03:45,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:03:45,414 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:45,414 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [232186099] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:45,414 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:03:45,414 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 32 [2021-06-05 08:03:45,414 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381612657] [2021-06-05 08:03:45,415 INFO L462 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-06-05 08:03:45,415 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:03:45,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-06-05 08:03:45,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=785, Unknown=0, NotChecked=0, Total=992 [2021-06-05 08:03:45,415 INFO L87 Difference]: Start difference. First operand 5278 states and 14883 transitions. Second operand has 32 states, 32 states have (on average 5.0625) internal successors, (162), 32 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:46,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:03:46,042 INFO L93 Difference]: Finished difference Result 7446 states and 19347 transitions. [2021-06-05 08:03:46,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-05 08:03:46,042 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.0625) internal successors, (162), 32 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 160 [2021-06-05 08:03:46,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:03:46,050 INFO L225 Difference]: With dead ends: 7446 [2021-06-05 08:03:46,050 INFO L226 Difference]: Without dead ends: 7176 [2021-06-05 08:03:46,050 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 720 ImplicationChecksByTransitivity, 766.9ms TimeCoverageRelationStatistics Valid=1067, Invalid=2965, Unknown=0, NotChecked=0, Total=4032 [2021-06-05 08:03:46,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7176 states. [2021-06-05 08:03:46,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7176 to 5278. [2021-06-05 08:03:46,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5278 states, 5277 states have (on average 2.8203524729960203) internal successors, (14883), 5277 states have internal predecessors, (14883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:46,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5278 states to 5278 states and 14883 transitions. [2021-06-05 08:03:46,111 INFO L78 Accepts]: Start accepts. Automaton has 5278 states and 14883 transitions. Word has length 160 [2021-06-05 08:03:46,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:03:46,111 INFO L482 AbstractCegarLoop]: Abstraction has 5278 states and 14883 transitions. [2021-06-05 08:03:46,111 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 5.0625) internal successors, (162), 32 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:46,111 INFO L276 IsEmpty]: Start isEmpty. Operand 5278 states and 14883 transitions. [2021-06-05 08:03:46,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-06-05 08:03:46,116 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:03:46,116 INFO L521 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:03:46,316 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 326 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable330 [2021-06-05 08:03:46,316 INFO L430 AbstractCegarLoop]: === Iteration 332 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:03:46,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:03:46,317 INFO L82 PathProgramCache]: Analyzing trace with hash 570577698, now seen corresponding path program 323 times [2021-06-05 08:03:46,317 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:03:46,317 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645416100] [2021-06-05 08:03:46,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:03:46,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:03:46,628 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:46,628 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:03:46,628 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645416100] [2021-06-05 08:03:46,628 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645416100] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:46,628 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1714394209] [2021-06-05 08:03:46,629 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 327 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 327 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:03:46,694 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2021-06-05 08:03:46,694 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:03:46,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 32 conjunts are in the unsatisfiable core [2021-06-05 08:03:46,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:03:46,875 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:46,876 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1714394209] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:46,876 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:03:46,876 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 31 [2021-06-05 08:03:46,876 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64232535] [2021-06-05 08:03:46,876 INFO L462 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-06-05 08:03:46,876 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:03:46,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-06-05 08:03:46,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=736, Unknown=0, NotChecked=0, Total=930 [2021-06-05 08:03:46,877 INFO L87 Difference]: Start difference. First operand 5278 states and 14883 transitions. Second operand has 31 states, 31 states have (on average 5.161290322580645) internal successors, (160), 31 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:47,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:03:47,450 INFO L93 Difference]: Finished difference Result 7421 states and 19297 transitions. [2021-06-05 08:03:47,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-06-05 08:03:47,451 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.161290322580645) internal successors, (160), 31 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 160 [2021-06-05 08:03:47,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:03:47,460 INFO L225 Difference]: With dead ends: 7421 [2021-06-05 08:03:47,460 INFO L226 Difference]: Without dead ends: 7151 [2021-06-05 08:03:47,461 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 706 ImplicationChecksByTransitivity, 681.0ms TimeCoverageRelationStatistics Valid=987, Invalid=2795, Unknown=0, NotChecked=0, Total=3782 [2021-06-05 08:03:47,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7151 states. [2021-06-05 08:03:47,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7151 to 5278. [2021-06-05 08:03:47,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5278 states, 5277 states have (on average 2.8203524729960203) internal successors, (14883), 5277 states have internal predecessors, (14883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:47,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5278 states to 5278 states and 14883 transitions. [2021-06-05 08:03:47,528 INFO L78 Accepts]: Start accepts. Automaton has 5278 states and 14883 transitions. Word has length 160 [2021-06-05 08:03:47,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:03:47,528 INFO L482 AbstractCegarLoop]: Abstraction has 5278 states and 14883 transitions. [2021-06-05 08:03:47,528 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 5.161290322580645) internal successors, (160), 31 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:47,528 INFO L276 IsEmpty]: Start isEmpty. Operand 5278 states and 14883 transitions. [2021-06-05 08:03:47,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-06-05 08:03:47,532 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:03:47,532 INFO L521 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:03:47,732 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 327 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable331 [2021-06-05 08:03:47,733 INFO L430 AbstractCegarLoop]: === Iteration 333 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:03:47,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:03:47,733 INFO L82 PathProgramCache]: Analyzing trace with hash 2037261810, now seen corresponding path program 324 times [2021-06-05 08:03:47,733 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:03:47,733 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366569946] [2021-06-05 08:03:47,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:03:47,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:03:48,051 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:48,051 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:03:48,051 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366569946] [2021-06-05 08:03:48,051 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366569946] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:48,051 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1684855972] [2021-06-05 08:03:48,051 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 328 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 328 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:03:48,127 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2021-06-05 08:03:48,127 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:03:48,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 32 conjunts are in the unsatisfiable core [2021-06-05 08:03:48,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:03:48,357 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:48,357 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1684855972] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:48,357 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:03:48,357 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 32 [2021-06-05 08:03:48,357 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726860273] [2021-06-05 08:03:48,357 INFO L462 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-06-05 08:03:48,357 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:03:48,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-06-05 08:03:48,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=806, Unknown=0, NotChecked=0, Total=992 [2021-06-05 08:03:48,358 INFO L87 Difference]: Start difference. First operand 5278 states and 14883 transitions. Second operand has 32 states, 32 states have (on average 5.0625) internal successors, (162), 32 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:49,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:03:49,028 INFO L93 Difference]: Finished difference Result 7371 states and 19197 transitions. [2021-06-05 08:03:49,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-06-05 08:03:49,028 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.0625) internal successors, (162), 32 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 160 [2021-06-05 08:03:49,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:03:49,037 INFO L225 Difference]: With dead ends: 7371 [2021-06-05 08:03:49,037 INFO L226 Difference]: Without dead ends: 7101 [2021-06-05 08:03:49,037 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 808 ImplicationChecksByTransitivity, 779.7ms TimeCoverageRelationStatistics Valid=1074, Invalid=3216, Unknown=0, NotChecked=0, Total=4290 [2021-06-05 08:03:49,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7101 states. [2021-06-05 08:03:49,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7101 to 5278. [2021-06-05 08:03:49,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5278 states, 5277 states have (on average 2.8203524729960203) internal successors, (14883), 5277 states have internal predecessors, (14883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:49,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5278 states to 5278 states and 14883 transitions. [2021-06-05 08:03:49,101 INFO L78 Accepts]: Start accepts. Automaton has 5278 states and 14883 transitions. Word has length 160 [2021-06-05 08:03:49,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:03:49,101 INFO L482 AbstractCegarLoop]: Abstraction has 5278 states and 14883 transitions. [2021-06-05 08:03:49,101 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 5.0625) internal successors, (162), 32 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:49,101 INFO L276 IsEmpty]: Start isEmpty. Operand 5278 states and 14883 transitions. [2021-06-05 08:03:49,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-06-05 08:03:49,106 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:03:49,106 INFO L521 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:03:49,306 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable332,328 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:03:49,306 INFO L430 AbstractCegarLoop]: === Iteration 334 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:03:49,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:03:49,307 INFO L82 PathProgramCache]: Analyzing trace with hash 1902040416, now seen corresponding path program 325 times [2021-06-05 08:03:49,307 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:03:49,307 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305049569] [2021-06-05 08:03:49,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:03:49,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:03:49,602 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:49,602 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:03:49,602 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305049569] [2021-06-05 08:03:49,602 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305049569] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:49,602 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1570150255] [2021-06-05 08:03:49,602 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 329 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 329 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:03:49,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:03:49,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 32 conjunts are in the unsatisfiable core [2021-06-05 08:03:49,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:03:49,844 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:49,845 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1570150255] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:49,845 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:03:49,845 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 31 [2021-06-05 08:03:49,845 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379850866] [2021-06-05 08:03:49,845 INFO L462 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-06-05 08:03:49,845 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:03:49,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-06-05 08:03:49,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=754, Unknown=0, NotChecked=0, Total=930 [2021-06-05 08:03:49,846 INFO L87 Difference]: Start difference. First operand 5278 states and 14883 transitions. Second operand has 31 states, 31 states have (on average 5.161290322580645) internal successors, (160), 31 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:50,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:03:50,469 INFO L93 Difference]: Finished difference Result 7321 states and 19097 transitions. [2021-06-05 08:03:50,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-05 08:03:50,470 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.161290322580645) internal successors, (160), 31 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 160 [2021-06-05 08:03:50,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:03:50,478 INFO L225 Difference]: With dead ends: 7321 [2021-06-05 08:03:50,478 INFO L226 Difference]: Without dead ends: 7051 [2021-06-05 08:03:50,479 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 792 ImplicationChecksByTransitivity, 706.2ms TimeCoverageRelationStatistics Valid=1002, Invalid=3030, Unknown=0, NotChecked=0, Total=4032 [2021-06-05 08:03:50,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7051 states. [2021-06-05 08:03:50,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7051 to 5278. [2021-06-05 08:03:50,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5278 states, 5277 states have (on average 2.8203524729960203) internal successors, (14883), 5277 states have internal predecessors, (14883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:50,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5278 states to 5278 states and 14883 transitions. [2021-06-05 08:03:50,560 INFO L78 Accepts]: Start accepts. Automaton has 5278 states and 14883 transitions. Word has length 160 [2021-06-05 08:03:50,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:03:50,561 INFO L482 AbstractCegarLoop]: Abstraction has 5278 states and 14883 transitions. [2021-06-05 08:03:50,561 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 5.161290322580645) internal successors, (160), 31 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:50,561 INFO L276 IsEmpty]: Start isEmpty. Operand 5278 states and 14883 transitions. [2021-06-05 08:03:50,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-06-05 08:03:50,565 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:03:50,565 INFO L521 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:03:50,765 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 329 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable333 [2021-06-05 08:03:50,765 INFO L430 AbstractCegarLoop]: === Iteration 335 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:03:50,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:03:50,766 INFO L82 PathProgramCache]: Analyzing trace with hash 1025305648, now seen corresponding path program 326 times [2021-06-05 08:03:50,766 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:03:50,766 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113392525] [2021-06-05 08:03:50,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:03:50,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:03:51,066 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:51,067 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:03:51,067 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113392525] [2021-06-05 08:03:51,067 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113392525] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:51,067 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1472520282] [2021-06-05 08:03:51,067 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 330 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 330 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:03:51,131 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 08:03:51,131 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:03:51,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 32 conjunts are in the unsatisfiable core [2021-06-05 08:03:51,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:03:51,326 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:51,326 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1472520282] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:51,327 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:03:51,327 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 32 [2021-06-05 08:03:51,327 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410792944] [2021-06-05 08:03:51,327 INFO L462 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-06-05 08:03:51,327 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:03:51,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-06-05 08:03:51,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=823, Unknown=0, NotChecked=0, Total=992 [2021-06-05 08:03:51,327 INFO L87 Difference]: Start difference. First operand 5278 states and 14883 transitions. Second operand has 32 states, 32 states have (on average 5.0625) internal successors, (162), 32 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:52,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:03:52,083 INFO L93 Difference]: Finished difference Result 7271 states and 18997 transitions. [2021-06-05 08:03:52,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-05 08:03:52,083 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.0625) internal successors, (162), 32 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 160 [2021-06-05 08:03:52,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:03:52,091 INFO L225 Difference]: With dead ends: 7271 [2021-06-05 08:03:52,091 INFO L226 Difference]: Without dead ends: 7001 [2021-06-05 08:03:52,092 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 901 ImplicationChecksByTransitivity, 812.8ms TimeCoverageRelationStatistics Valid=1097, Invalid=3459, Unknown=0, NotChecked=0, Total=4556 [2021-06-05 08:03:52,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7001 states. [2021-06-05 08:03:52,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7001 to 5278. [2021-06-05 08:03:52,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5278 states, 5277 states have (on average 2.8203524729960203) internal successors, (14883), 5277 states have internal predecessors, (14883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:52,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5278 states to 5278 states and 14883 transitions. [2021-06-05 08:03:52,158 INFO L78 Accepts]: Start accepts. Automaton has 5278 states and 14883 transitions. Word has length 160 [2021-06-05 08:03:52,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:03:52,158 INFO L482 AbstractCegarLoop]: Abstraction has 5278 states and 14883 transitions. [2021-06-05 08:03:52,158 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 5.0625) internal successors, (162), 32 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:52,158 INFO L276 IsEmpty]: Start isEmpty. Operand 5278 states and 14883 transitions. [2021-06-05 08:03:52,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-06-05 08:03:52,163 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:03:52,163 INFO L521 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:03:52,363 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 330 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable334 [2021-06-05 08:03:52,363 INFO L430 AbstractCegarLoop]: === Iteration 336 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:03:52,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:03:52,363 INFO L82 PathProgramCache]: Analyzing trace with hash -712020706, now seen corresponding path program 327 times [2021-06-05 08:03:52,363 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:03:52,363 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656482472] [2021-06-05 08:03:52,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:03:52,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:03:52,645 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:52,645 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:03:52,645 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656482472] [2021-06-05 08:03:52,645 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656482472] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:52,645 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [262014230] [2021-06-05 08:03:52,645 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 331 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 331 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:03:52,721 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2021-06-05 08:03:52,721 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:03:52,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 32 conjunts are in the unsatisfiable core [2021-06-05 08:03:52,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:03:52,931 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:52,931 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [262014230] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:52,931 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:03:52,931 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 31 [2021-06-05 08:03:52,932 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365230001] [2021-06-05 08:03:52,932 INFO L462 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-06-05 08:03:52,932 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:03:52,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-06-05 08:03:52,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=768, Unknown=0, NotChecked=0, Total=930 [2021-06-05 08:03:52,932 INFO L87 Difference]: Start difference. First operand 5278 states and 14883 transitions. Second operand has 31 states, 31 states have (on average 5.161290322580645) internal successors, (160), 31 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:53,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:03:53,621 INFO L93 Difference]: Finished difference Result 7221 states and 18897 transitions. [2021-06-05 08:03:53,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-05 08:03:53,621 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.161290322580645) internal successors, (160), 31 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 160 [2021-06-05 08:03:53,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:03:53,630 INFO L225 Difference]: With dead ends: 7221 [2021-06-05 08:03:53,630 INFO L226 Difference]: Without dead ends: 6951 [2021-06-05 08:03:53,630 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 882 ImplicationChecksByTransitivity, 722.9ms TimeCoverageRelationStatistics Valid=1033, Invalid=3257, Unknown=0, NotChecked=0, Total=4290 [2021-06-05 08:03:53,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6951 states. [2021-06-05 08:03:53,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6951 to 5278. [2021-06-05 08:03:53,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5278 states, 5277 states have (on average 2.8203524729960203) internal successors, (14883), 5277 states have internal predecessors, (14883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:53,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5278 states to 5278 states and 14883 transitions. [2021-06-05 08:03:53,692 INFO L78 Accepts]: Start accepts. Automaton has 5278 states and 14883 transitions. Word has length 160 [2021-06-05 08:03:53,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:03:53,692 INFO L482 AbstractCegarLoop]: Abstraction has 5278 states and 14883 transitions. [2021-06-05 08:03:53,692 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 5.161290322580645) internal successors, (160), 31 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:53,692 INFO L276 IsEmpty]: Start isEmpty. Operand 5278 states and 14883 transitions. [2021-06-05 08:03:53,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-06-05 08:03:53,696 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:03:53,696 INFO L521 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:03:53,896 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 331 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable335 [2021-06-05 08:03:53,897 INFO L430 AbstractCegarLoop]: === Iteration 337 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:03:53,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:03:53,897 INFO L82 PathProgramCache]: Analyzing trace with hash 652527598, now seen corresponding path program 328 times [2021-06-05 08:03:53,897 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:03:53,897 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408584351] [2021-06-05 08:03:53,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:03:53,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:03:54,185 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:54,186 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:03:54,186 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408584351] [2021-06-05 08:03:54,186 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408584351] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:54,186 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [193222104] [2021-06-05 08:03:54,186 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 332 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 332 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:03:54,249 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 08:03:54,249 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:03:54,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 32 conjunts are in the unsatisfiable core [2021-06-05 08:03:54,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:03:54,443 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:54,443 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [193222104] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:54,443 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:03:54,443 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 32 [2021-06-05 08:03:54,443 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457489674] [2021-06-05 08:03:54,444 INFO L462 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-06-05 08:03:54,444 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:03:54,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-06-05 08:03:54,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=836, Unknown=0, NotChecked=0, Total=992 [2021-06-05 08:03:54,444 INFO L87 Difference]: Start difference. First operand 5278 states and 14883 transitions. Second operand has 32 states, 32 states have (on average 5.0625) internal successors, (162), 32 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:55,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:03:55,290 INFO L93 Difference]: Finished difference Result 7171 states and 18797 transitions. [2021-06-05 08:03:55,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-06-05 08:03:55,290 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.0625) internal successors, (162), 32 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 160 [2021-06-05 08:03:55,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:03:55,297 INFO L225 Difference]: With dead ends: 7171 [2021-06-05 08:03:55,297 INFO L226 Difference]: Without dead ends: 6901 [2021-06-05 08:03:55,298 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 998 ImplicationChecksByTransitivity, 877.7ms TimeCoverageRelationStatistics Valid=1136, Invalid=3694, Unknown=0, NotChecked=0, Total=4830 [2021-06-05 08:03:55,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6901 states. [2021-06-05 08:03:55,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6901 to 5278. [2021-06-05 08:03:55,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5278 states, 5277 states have (on average 2.8203524729960203) internal successors, (14883), 5277 states have internal predecessors, (14883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:55,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5278 states to 5278 states and 14883 transitions. [2021-06-05 08:03:55,371 INFO L78 Accepts]: Start accepts. Automaton has 5278 states and 14883 transitions. Word has length 160 [2021-06-05 08:03:55,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:03:55,371 INFO L482 AbstractCegarLoop]: Abstraction has 5278 states and 14883 transitions. [2021-06-05 08:03:55,371 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 5.0625) internal successors, (162), 32 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:55,371 INFO L276 IsEmpty]: Start isEmpty. Operand 5278 states and 14883 transitions. [2021-06-05 08:03:55,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-06-05 08:03:55,376 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:03:55,376 INFO L521 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:03:55,576 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 332 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable336 [2021-06-05 08:03:55,576 INFO L430 AbstractCegarLoop]: === Iteration 338 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:03:55,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:03:55,577 INFO L82 PathProgramCache]: Analyzing trace with hash -1624704420, now seen corresponding path program 329 times [2021-06-05 08:03:55,577 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:03:55,577 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607144341] [2021-06-05 08:03:55,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:03:55,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:03:55,889 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:55,890 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:03:55,890 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607144341] [2021-06-05 08:03:55,890 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607144341] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:55,890 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [977379390] [2021-06-05 08:03:55,890 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 333 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 333 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:03:55,962 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2021-06-05 08:03:55,962 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:03:55,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 32 conjunts are in the unsatisfiable core [2021-06-05 08:03:55,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:03:56,149 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:56,149 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [977379390] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:56,149 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:03:56,149 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 31 [2021-06-05 08:03:56,149 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641030009] [2021-06-05 08:03:56,149 INFO L462 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-06-05 08:03:56,149 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:03:56,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-06-05 08:03:56,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=778, Unknown=0, NotChecked=0, Total=930 [2021-06-05 08:03:56,150 INFO L87 Difference]: Start difference. First operand 5278 states and 14883 transitions. Second operand has 31 states, 31 states have (on average 5.161290322580645) internal successors, (160), 31 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:56,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:03:56,893 INFO L93 Difference]: Finished difference Result 7121 states and 18697 transitions. [2021-06-05 08:03:56,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-05 08:03:56,893 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.161290322580645) internal successors, (160), 31 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 160 [2021-06-05 08:03:56,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:03:56,901 INFO L225 Difference]: With dead ends: 7121 [2021-06-05 08:03:56,901 INFO L226 Difference]: Without dead ends: 6851 [2021-06-05 08:03:56,902 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 976 ImplicationChecksByTransitivity, 780.1ms TimeCoverageRelationStatistics Valid=1080, Invalid=3476, Unknown=0, NotChecked=0, Total=4556 [2021-06-05 08:03:56,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6851 states. [2021-06-05 08:03:56,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6851 to 5278. [2021-06-05 08:03:56,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5278 states, 5277 states have (on average 2.8203524729960203) internal successors, (14883), 5277 states have internal predecessors, (14883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:56,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5278 states to 5278 states and 14883 transitions. [2021-06-05 08:03:56,967 INFO L78 Accepts]: Start accepts. Automaton has 5278 states and 14883 transitions. Word has length 160 [2021-06-05 08:03:56,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:03:56,967 INFO L482 AbstractCegarLoop]: Abstraction has 5278 states and 14883 transitions. [2021-06-05 08:03:56,967 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 5.161290322580645) internal successors, (160), 31 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:56,967 INFO L276 IsEmpty]: Start isEmpty. Operand 5278 states and 14883 transitions. [2021-06-05 08:03:56,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-06-05 08:03:56,971 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:03:56,971 INFO L521 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:03:57,172 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 333 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable337 [2021-06-05 08:03:57,172 INFO L430 AbstractCegarLoop]: === Iteration 339 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:03:57,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:03:57,172 INFO L82 PathProgramCache]: Analyzing trace with hash 1771739436, now seen corresponding path program 330 times [2021-06-05 08:03:57,172 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:03:57,172 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017518837] [2021-06-05 08:03:57,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:03:57,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:03:57,458 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:57,458 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:03:57,458 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017518837] [2021-06-05 08:03:57,458 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017518837] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:57,458 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1767948472] [2021-06-05 08:03:57,458 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 334 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 334 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:03:57,532 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2021-06-05 08:03:57,532 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:03:57,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 32 conjunts are in the unsatisfiable core [2021-06-05 08:03:57,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:03:57,731 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:57,731 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1767948472] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:57,731 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:03:57,731 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 32 [2021-06-05 08:03:57,731 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485466004] [2021-06-05 08:03:57,731 INFO L462 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-06-05 08:03:57,731 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:03:57,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-06-05 08:03:57,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=845, Unknown=0, NotChecked=0, Total=992 [2021-06-05 08:03:57,732 INFO L87 Difference]: Start difference. First operand 5278 states and 14883 transitions. Second operand has 32 states, 32 states have (on average 5.0625) internal successors, (162), 32 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:58,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:03:58,617 INFO L93 Difference]: Finished difference Result 7071 states and 18597 transitions. [2021-06-05 08:03:58,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-06-05 08:03:58,617 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.0625) internal successors, (162), 32 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 160 [2021-06-05 08:03:58,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:03:58,624 INFO L225 Difference]: With dead ends: 7071 [2021-06-05 08:03:58,624 INFO L226 Difference]: Without dead ends: 6801 [2021-06-05 08:03:58,625 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1099 ImplicationChecksByTransitivity, 912.5ms TimeCoverageRelationStatistics Valid=1191, Invalid=3921, Unknown=0, NotChecked=0, Total=5112 [2021-06-05 08:03:58,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6801 states. [2021-06-05 08:03:58,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6801 to 5278. [2021-06-05 08:03:58,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5278 states, 5277 states have (on average 2.8203524729960203) internal successors, (14883), 5277 states have internal predecessors, (14883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:58,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5278 states to 5278 states and 14883 transitions. [2021-06-05 08:03:58,683 INFO L78 Accepts]: Start accepts. Automaton has 5278 states and 14883 transitions. Word has length 160 [2021-06-05 08:03:58,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:03:58,683 INFO L482 AbstractCegarLoop]: Abstraction has 5278 states and 14883 transitions. [2021-06-05 08:03:58,683 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 5.0625) internal successors, (162), 32 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:58,683 INFO L276 IsEmpty]: Start isEmpty. Operand 5278 states and 14883 transitions. [2021-06-05 08:03:58,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-06-05 08:03:58,687 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:03:58,687 INFO L521 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:03:58,887 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable338,334 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:03:58,888 INFO L430 AbstractCegarLoop]: === Iteration 340 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:03:58,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:03:58,888 INFO L82 PathProgramCache]: Analyzing trace with hash 156785946, now seen corresponding path program 331 times [2021-06-05 08:03:58,888 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:03:58,888 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768093546] [2021-06-05 08:03:58,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:03:58,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:03:59,154 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:59,154 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:03:59,154 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768093546] [2021-06-05 08:03:59,154 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768093546] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:59,154 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1453177377] [2021-06-05 08:03:59,154 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 335 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 335 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:03:59,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:03:59,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 32 conjunts are in the unsatisfiable core [2021-06-05 08:03:59,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:03:59,396 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:59,397 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1453177377] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:59,397 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:03:59,397 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 31 [2021-06-05 08:03:59,397 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762564731] [2021-06-05 08:03:59,397 INFO L462 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-06-05 08:03:59,397 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:03:59,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-06-05 08:03:59,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=784, Unknown=0, NotChecked=0, Total=930 [2021-06-05 08:03:59,397 INFO L87 Difference]: Start difference. First operand 5278 states and 14883 transitions. Second operand has 31 states, 31 states have (on average 5.161290322580645) internal successors, (160), 31 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:00,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:04:00,158 INFO L93 Difference]: Finished difference Result 7021 states and 18497 transitions. [2021-06-05 08:04:00,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-05 08:04:00,158 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.161290322580645) internal successors, (160), 31 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 160 [2021-06-05 08:04:00,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:04:00,166 INFO L225 Difference]: With dead ends: 7021 [2021-06-05 08:04:00,166 INFO L226 Difference]: Without dead ends: 6751 [2021-06-05 08:04:00,166 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1074 ImplicationChecksByTransitivity, 772.0ms TimeCoverageRelationStatistics Valid=1143, Invalid=3687, Unknown=0, NotChecked=0, Total=4830 [2021-06-05 08:04:00,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6751 states. [2021-06-05 08:04:00,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6751 to 5278. [2021-06-05 08:04:00,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5278 states, 5277 states have (on average 2.8203524729960203) internal successors, (14883), 5277 states have internal predecessors, (14883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:00,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5278 states to 5278 states and 14883 transitions. [2021-06-05 08:04:00,221 INFO L78 Accepts]: Start accepts. Automaton has 5278 states and 14883 transitions. Word has length 160 [2021-06-05 08:04:00,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:04:00,221 INFO L482 AbstractCegarLoop]: Abstraction has 5278 states and 14883 transitions. [2021-06-05 08:04:00,221 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 5.161290322580645) internal successors, (160), 31 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:00,222 INFO L276 IsEmpty]: Start isEmpty. Operand 5278 states and 14883 transitions. [2021-06-05 08:04:00,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-06-05 08:04:00,225 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:04:00,225 INFO L521 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:04:00,426 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable339,335 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:04:00,426 INFO L430 AbstractCegarLoop]: === Iteration 341 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:04:00,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:04:00,426 INFO L82 PathProgramCache]: Analyzing trace with hash -223658006, now seen corresponding path program 332 times [2021-06-05 08:04:00,426 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:04:00,426 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518660626] [2021-06-05 08:04:00,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:04:00,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:04:00,703 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:00,704 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:04:00,704 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518660626] [2021-06-05 08:04:00,704 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518660626] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:00,704 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [910984617] [2021-06-05 08:04:00,704 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 336 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 336 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:04:00,766 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 08:04:00,766 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:04:00,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 32 conjunts are in the unsatisfiable core [2021-06-05 08:04:00,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:04:00,986 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:00,987 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [910984617] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:00,987 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:04:00,987 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 32 [2021-06-05 08:04:00,987 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17482090] [2021-06-05 08:04:00,987 INFO L462 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-06-05 08:04:00,987 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:04:00,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-06-05 08:04:00,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=850, Unknown=0, NotChecked=0, Total=992 [2021-06-05 08:04:00,987 INFO L87 Difference]: Start difference. First operand 5278 states and 14883 transitions. Second operand has 32 states, 32 states have (on average 5.0625) internal successors, (162), 32 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:01,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:04:01,919 INFO L93 Difference]: Finished difference Result 6971 states and 18397 transitions. [2021-06-05 08:04:01,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-06-05 08:04:01,919 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.0625) internal successors, (162), 32 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 160 [2021-06-05 08:04:01,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:04:01,927 INFO L225 Difference]: With dead ends: 6971 [2021-06-05 08:04:01,927 INFO L226 Difference]: Without dead ends: 6701 [2021-06-05 08:04:01,927 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1204 ImplicationChecksByTransitivity, 925.5ms TimeCoverageRelationStatistics Valid=1262, Invalid=4140, Unknown=0, NotChecked=0, Total=5402 [2021-06-05 08:04:01,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6701 states. [2021-06-05 08:04:01,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6701 to 5278. [2021-06-05 08:04:01,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5278 states, 5277 states have (on average 2.8203524729960203) internal successors, (14883), 5277 states have internal predecessors, (14883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:01,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5278 states to 5278 states and 14883 transitions. [2021-06-05 08:04:01,984 INFO L78 Accepts]: Start accepts. Automaton has 5278 states and 14883 transitions. Word has length 160 [2021-06-05 08:04:01,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:04:01,984 INFO L482 AbstractCegarLoop]: Abstraction has 5278 states and 14883 transitions. [2021-06-05 08:04:01,984 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 5.0625) internal successors, (162), 32 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:01,984 INFO L276 IsEmpty]: Start isEmpty. Operand 5278 states and 14883 transitions. [2021-06-05 08:04:01,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-06-05 08:04:01,988 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:04:01,988 INFO L521 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:04:02,188 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable340,336 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:04:02,189 INFO L430 AbstractCegarLoop]: === Iteration 342 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:04:02,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:04:02,189 INFO L82 PathProgramCache]: Analyzing trace with hash 400717144, now seen corresponding path program 333 times [2021-06-05 08:04:02,189 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:04:02,189 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395183141] [2021-06-05 08:04:02,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:04:02,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:04:02,451 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:02,451 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:04:02,452 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395183141] [2021-06-05 08:04:02,452 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395183141] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:02,452 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2030694392] [2021-06-05 08:04:02,452 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 337 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 337 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:04:02,525 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2021-06-05 08:04:02,526 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:04:02,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 32 conjunts are in the unsatisfiable core [2021-06-05 08:04:02,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:04:02,698 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:02,698 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2030694392] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:02,698 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:04:02,698 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 31 [2021-06-05 08:04:02,698 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847086738] [2021-06-05 08:04:02,698 INFO L462 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-06-05 08:04:02,698 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:04:02,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-06-05 08:04:02,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=786, Unknown=0, NotChecked=0, Total=930 [2021-06-05 08:04:02,699 INFO L87 Difference]: Start difference. First operand 5278 states and 14883 transitions. Second operand has 31 states, 31 states have (on average 5.161290322580645) internal successors, (160), 31 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:03,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:04:03,496 INFO L93 Difference]: Finished difference Result 6921 states and 18297 transitions. [2021-06-05 08:04:03,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-06-05 08:04:03,496 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.161290322580645) internal successors, (160), 31 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 160 [2021-06-05 08:04:03,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:04:03,503 INFO L225 Difference]: With dead ends: 6921 [2021-06-05 08:04:03,504 INFO L226 Difference]: Without dead ends: 6651 [2021-06-05 08:04:03,504 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1176 ImplicationChecksByTransitivity, 796.9ms TimeCoverageRelationStatistics Valid=1222, Invalid=3890, Unknown=0, NotChecked=0, Total=5112 [2021-06-05 08:04:03,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6651 states. [2021-06-05 08:04:03,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6651 to 5278. [2021-06-05 08:04:03,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5278 states, 5277 states have (on average 2.8203524729960203) internal successors, (14883), 5277 states have internal predecessors, (14883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:03,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5278 states to 5278 states and 14883 transitions. [2021-06-05 08:04:03,597 INFO L78 Accepts]: Start accepts. Automaton has 5278 states and 14883 transitions. Word has length 160 [2021-06-05 08:04:03,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:04:03,597 INFO L482 AbstractCegarLoop]: Abstraction has 5278 states and 14883 transitions. [2021-06-05 08:04:03,597 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 5.161290322580645) internal successors, (160), 31 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:03,597 INFO L276 IsEmpty]: Start isEmpty. Operand 5278 states and 14883 transitions. [2021-06-05 08:04:03,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-06-05 08:04:03,601 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:04:03,601 INFO L521 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:04:03,801 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable341,337 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:04:03,801 INFO L430 AbstractCegarLoop]: === Iteration 343 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:04:03,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:04:03,802 INFO L82 PathProgramCache]: Analyzing trace with hash 1209769000, now seen corresponding path program 334 times [2021-06-05 08:04:03,802 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:04:03,802 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256387608] [2021-06-05 08:04:03,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:04:03,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:04:04,070 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:04,070 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:04:04,070 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256387608] [2021-06-05 08:04:04,071 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256387608] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:04,071 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [652011796] [2021-06-05 08:04:04,071 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 338 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 338 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:04:04,133 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 08:04:04,134 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:04:04,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 32 conjunts are in the unsatisfiable core [2021-06-05 08:04:04,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:04:04,322 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:04,323 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [652011796] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:04,323 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:04:04,323 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 32 [2021-06-05 08:04:04,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339866086] [2021-06-05 08:04:04,323 INFO L462 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-06-05 08:04:04,323 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:04:04,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-06-05 08:04:04,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=851, Unknown=0, NotChecked=0, Total=992 [2021-06-05 08:04:04,324 INFO L87 Difference]: Start difference. First operand 5278 states and 14883 transitions. Second operand has 32 states, 32 states have (on average 5.0625) internal successors, (162), 32 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:05,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:04:05,322 INFO L93 Difference]: Finished difference Result 6871 states and 18197 transitions. [2021-06-05 08:04:05,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-06-05 08:04:05,322 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.0625) internal successors, (162), 32 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 160 [2021-06-05 08:04:05,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:04:05,330 INFO L225 Difference]: With dead ends: 6871 [2021-06-05 08:04:05,330 INFO L226 Difference]: Without dead ends: 6601 [2021-06-05 08:04:05,331 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1313 ImplicationChecksByTransitivity, 974.9ms TimeCoverageRelationStatistics Valid=1349, Invalid=4351, Unknown=0, NotChecked=0, Total=5700 [2021-06-05 08:04:05,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6601 states. [2021-06-05 08:04:05,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6601 to 5278. [2021-06-05 08:04:05,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5278 states, 5277 states have (on average 2.8203524729960203) internal successors, (14883), 5277 states have internal predecessors, (14883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:05,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5278 states to 5278 states and 14883 transitions. [2021-06-05 08:04:05,392 INFO L78 Accepts]: Start accepts. Automaton has 5278 states and 14883 transitions. Word has length 160 [2021-06-05 08:04:05,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:04:05,393 INFO L482 AbstractCegarLoop]: Abstraction has 5278 states and 14883 transitions. [2021-06-05 08:04:05,393 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 5.0625) internal successors, (162), 32 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:05,393 INFO L276 IsEmpty]: Start isEmpty. Operand 5278 states and 14883 transitions. [2021-06-05 08:04:05,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-06-05 08:04:05,397 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:04:05,397 INFO L521 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:04:05,597 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 338 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable342 [2021-06-05 08:04:05,598 INFO L430 AbstractCegarLoop]: === Iteration 344 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:04:05,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:04:05,598 INFO L82 PathProgramCache]: Analyzing trace with hash -182181098, now seen corresponding path program 335 times [2021-06-05 08:04:05,598 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:04:05,598 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314645193] [2021-06-05 08:04:05,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:04:05,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:04:05,856 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:05,856 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:04:05,856 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314645193] [2021-06-05 08:04:05,856 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314645193] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:05,856 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1263731744] [2021-06-05 08:04:05,856 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 339 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 339 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:04:05,922 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2021-06-05 08:04:05,922 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:04:05,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 32 conjunts are in the unsatisfiable core [2021-06-05 08:04:05,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:04:06,092 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:06,092 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1263731744] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:06,092 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:04:06,092 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 31 [2021-06-05 08:04:06,092 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110830726] [2021-06-05 08:04:06,093 INFO L462 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-06-05 08:04:06,093 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:04:06,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-06-05 08:04:06,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=784, Unknown=0, NotChecked=0, Total=930 [2021-06-05 08:04:06,093 INFO L87 Difference]: Start difference. First operand 5278 states and 14883 transitions. Second operand has 31 states, 31 states have (on average 5.161290322580645) internal successors, (160), 31 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:06,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:04:06,950 INFO L93 Difference]: Finished difference Result 6821 states and 18097 transitions. [2021-06-05 08:04:06,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-06-05 08:04:06,950 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.161290322580645) internal successors, (160), 31 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 160 [2021-06-05 08:04:06,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:04:06,957 INFO L225 Difference]: With dead ends: 6821 [2021-06-05 08:04:06,957 INFO L226 Difference]: Without dead ends: 6551 [2021-06-05 08:04:06,958 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1282 ImplicationChecksByTransitivity, 843.5ms TimeCoverageRelationStatistics Valid=1317, Invalid=4085, Unknown=0, NotChecked=0, Total=5402 [2021-06-05 08:04:06,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6551 states. [2021-06-05 08:04:07,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6551 to 5278. [2021-06-05 08:04:07,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5278 states, 5277 states have (on average 2.8203524729960203) internal successors, (14883), 5277 states have internal predecessors, (14883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:07,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5278 states to 5278 states and 14883 transitions. [2021-06-05 08:04:07,015 INFO L78 Accepts]: Start accepts. Automaton has 5278 states and 14883 transitions. Word has length 160 [2021-06-05 08:04:07,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:04:07,015 INFO L482 AbstractCegarLoop]: Abstraction has 5278 states and 14883 transitions. [2021-06-05 08:04:07,015 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 5.161290322580645) internal successors, (160), 31 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:07,015 INFO L276 IsEmpty]: Start isEmpty. Operand 5278 states and 14883 transitions. [2021-06-05 08:04:07,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-06-05 08:04:07,019 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:04:07,019 INFO L521 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:04:07,221 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 339 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable343 [2021-06-05 08:04:07,221 INFO L430 AbstractCegarLoop]: === Iteration 345 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:04:07,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:04:07,221 INFO L82 PathProgramCache]: Analyzing trace with hash -427258394, now seen corresponding path program 336 times [2021-06-05 08:04:07,222 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:04:07,222 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487069671] [2021-06-05 08:04:07,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:04:07,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:04:07,493 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:07,493 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:04:07,493 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487069671] [2021-06-05 08:04:07,493 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487069671] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:07,493 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [928584299] [2021-06-05 08:04:07,494 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 340 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 340 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:04:07,568 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2021-06-05 08:04:07,568 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:04:07,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 32 conjunts are in the unsatisfiable core [2021-06-05 08:04:07,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:04:07,752 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:07,753 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [928584299] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:07,753 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:04:07,753 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 32 [2021-06-05 08:04:07,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626603837] [2021-06-05 08:04:07,753 INFO L462 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-06-05 08:04:07,753 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:04:07,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-06-05 08:04:07,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=848, Unknown=0, NotChecked=0, Total=992 [2021-06-05 08:04:07,754 INFO L87 Difference]: Start difference. First operand 5278 states and 14883 transitions. Second operand has 32 states, 32 states have (on average 5.0625) internal successors, (162), 32 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:08,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:04:08,765 INFO L93 Difference]: Finished difference Result 6771 states and 17997 transitions. [2021-06-05 08:04:08,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-06-05 08:04:08,766 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.0625) internal successors, (162), 32 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 160 [2021-06-05 08:04:08,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:04:08,773 INFO L225 Difference]: With dead ends: 6771 [2021-06-05 08:04:08,773 INFO L226 Difference]: Without dead ends: 6501 [2021-06-05 08:04:08,774 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1426 ImplicationChecksByTransitivity, 1012.3ms TimeCoverageRelationStatistics Valid=1452, Invalid=4554, Unknown=0, NotChecked=0, Total=6006 [2021-06-05 08:04:08,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6501 states. [2021-06-05 08:04:08,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6501 to 5278. [2021-06-05 08:04:08,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5278 states, 5277 states have (on average 2.8203524729960203) internal successors, (14883), 5277 states have internal predecessors, (14883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:08,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5278 states to 5278 states and 14883 transitions. [2021-06-05 08:04:08,827 INFO L78 Accepts]: Start accepts. Automaton has 5278 states and 14883 transitions. Word has length 160 [2021-06-05 08:04:08,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:04:08,827 INFO L482 AbstractCegarLoop]: Abstraction has 5278 states and 14883 transitions. [2021-06-05 08:04:08,827 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 5.0625) internal successors, (162), 32 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:08,827 INFO L276 IsEmpty]: Start isEmpty. Operand 5278 states and 14883 transitions. [2021-06-05 08:04:08,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-06-05 08:04:08,831 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:04:08,831 INFO L521 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:04:09,031 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 340 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable344 [2021-06-05 08:04:09,032 INFO L430 AbstractCegarLoop]: === Iteration 346 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:04:09,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:04:09,032 INFO L82 PathProgramCache]: Analyzing trace with hash -804108716, now seen corresponding path program 337 times [2021-06-05 08:04:09,032 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:04:09,032 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647906855] [2021-06-05 08:04:09,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:04:09,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:04:09,285 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:09,286 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:04:09,286 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647906855] [2021-06-05 08:04:09,286 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647906855] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:09,286 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1860392883] [2021-06-05 08:04:09,286 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 341 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 341 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:04:09,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:04:09,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 32 conjunts are in the unsatisfiable core [2021-06-05 08:04:09,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:04:09,549 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:09,549 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1860392883] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:09,549 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:04:09,549 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 31 [2021-06-05 08:04:09,549 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051695145] [2021-06-05 08:04:09,549 INFO L462 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-06-05 08:04:09,549 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:04:09,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-06-05 08:04:09,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=778, Unknown=0, NotChecked=0, Total=930 [2021-06-05 08:04:09,550 INFO L87 Difference]: Start difference. First operand 5278 states and 14883 transitions. Second operand has 31 states, 31 states have (on average 5.161290322580645) internal successors, (160), 31 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:10,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:04:10,430 INFO L93 Difference]: Finished difference Result 6721 states and 17897 transitions. [2021-06-05 08:04:10,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-06-05 08:04:10,431 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.161290322580645) internal successors, (160), 31 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 160 [2021-06-05 08:04:10,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:04:10,438 INFO L225 Difference]: With dead ends: 6721 [2021-06-05 08:04:10,438 INFO L226 Difference]: Without dead ends: 6451 [2021-06-05 08:04:10,438 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1392 ImplicationChecksByTransitivity, 859.0ms TimeCoverageRelationStatistics Valid=1428, Invalid=4272, Unknown=0, NotChecked=0, Total=5700 [2021-06-05 08:04:10,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6451 states. [2021-06-05 08:04:10,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6451 to 5278. [2021-06-05 08:04:10,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5278 states, 5277 states have (on average 2.8203524729960203) internal successors, (14883), 5277 states have internal predecessors, (14883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:10,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5278 states to 5278 states and 14883 transitions. [2021-06-05 08:04:10,491 INFO L78 Accepts]: Start accepts. Automaton has 5278 states and 14883 transitions. Word has length 160 [2021-06-05 08:04:10,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:04:10,492 INFO L482 AbstractCegarLoop]: Abstraction has 5278 states and 14883 transitions. [2021-06-05 08:04:10,492 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 5.161290322580645) internal successors, (160), 31 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:10,492 INFO L276 IsEmpty]: Start isEmpty. Operand 5278 states and 14883 transitions. [2021-06-05 08:04:10,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-06-05 08:04:10,496 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:04:10,496 INFO L521 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:04:10,696 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 341 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable345 [2021-06-05 08:04:10,696 INFO L430 AbstractCegarLoop]: === Iteration 347 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:04:10,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:04:10,696 INFO L82 PathProgramCache]: Analyzing trace with hash 522646820, now seen corresponding path program 338 times [2021-06-05 08:04:10,696 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:04:10,697 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165177286] [2021-06-05 08:04:10,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:04:10,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:04:10,952 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:10,953 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:04:10,953 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165177286] [2021-06-05 08:04:10,953 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165177286] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:10,953 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [267675553] [2021-06-05 08:04:10,953 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 342 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 342 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:04:11,014 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 08:04:11,015 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:04:11,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 32 conjunts are in the unsatisfiable core [2021-06-05 08:04:11,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:04:11,197 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:11,197 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [267675553] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:11,197 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:04:11,197 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 32 [2021-06-05 08:04:11,198 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203880018] [2021-06-05 08:04:11,198 INFO L462 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-06-05 08:04:11,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:04:11,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-06-05 08:04:11,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=841, Unknown=0, NotChecked=0, Total=992 [2021-06-05 08:04:11,198 INFO L87 Difference]: Start difference. First operand 5278 states and 14883 transitions. Second operand has 32 states, 32 states have (on average 5.0625) internal successors, (162), 32 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:12,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:04:12,301 INFO L93 Difference]: Finished difference Result 6671 states and 17797 transitions. [2021-06-05 08:04:12,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-06-05 08:04:12,301 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.0625) internal successors, (162), 32 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 160 [2021-06-05 08:04:12,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:04:12,306 INFO L225 Difference]: With dead ends: 6671 [2021-06-05 08:04:12,307 INFO L226 Difference]: Without dead ends: 6401 [2021-06-05 08:04:12,307 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1543 ImplicationChecksByTransitivity, 1071.2ms TimeCoverageRelationStatistics Valid=1571, Invalid=4749, Unknown=0, NotChecked=0, Total=6320 [2021-06-05 08:04:12,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6401 states. [2021-06-05 08:04:12,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6401 to 5278. [2021-06-05 08:04:12,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5278 states, 5277 states have (on average 2.8203524729960203) internal successors, (14883), 5277 states have internal predecessors, (14883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:12,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5278 states to 5278 states and 14883 transitions. [2021-06-05 08:04:12,362 INFO L78 Accepts]: Start accepts. Automaton has 5278 states and 14883 transitions. Word has length 160 [2021-06-05 08:04:12,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:04:12,362 INFO L482 AbstractCegarLoop]: Abstraction has 5278 states and 14883 transitions. [2021-06-05 08:04:12,362 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 5.0625) internal successors, (162), 32 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:12,362 INFO L276 IsEmpty]: Start isEmpty. Operand 5278 states and 14883 transitions. [2021-06-05 08:04:12,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-06-05 08:04:12,367 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:04:12,367 INFO L521 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:04:12,567 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable346,342 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:04:12,568 INFO L430 AbstractCegarLoop]: === Iteration 348 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:04:12,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:04:12,568 INFO L82 PathProgramCache]: Analyzing trace with hash 976862994, now seen corresponding path program 339 times [2021-06-05 08:04:12,568 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:04:12,568 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255132280] [2021-06-05 08:04:12,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:04:12,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:04:12,819 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:12,820 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:04:12,820 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255132280] [2021-06-05 08:04:12,820 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255132280] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:12,820 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1224325769] [2021-06-05 08:04:12,820 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 343 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 343 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:04:12,894 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2021-06-05 08:04:12,894 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:04:12,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 32 conjunts are in the unsatisfiable core [2021-06-05 08:04:12,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:04:13,061 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:13,061 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1224325769] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:13,062 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:04:13,062 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 31 [2021-06-05 08:04:13,062 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705762112] [2021-06-05 08:04:13,062 INFO L462 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-06-05 08:04:13,062 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:04:13,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-06-05 08:04:13,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=768, Unknown=0, NotChecked=0, Total=930 [2021-06-05 08:04:13,062 INFO L87 Difference]: Start difference. First operand 5278 states and 14883 transitions. Second operand has 31 states, 31 states have (on average 5.161290322580645) internal successors, (160), 31 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:13,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:04:13,978 INFO L93 Difference]: Finished difference Result 6621 states and 17697 transitions. [2021-06-05 08:04:13,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-06-05 08:04:13,978 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.161290322580645) internal successors, (160), 31 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 160 [2021-06-05 08:04:13,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:04:13,985 INFO L225 Difference]: With dead ends: 6621 [2021-06-05 08:04:13,985 INFO L226 Difference]: Without dead ends: 6351 [2021-06-05 08:04:13,985 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1506 ImplicationChecksByTransitivity, 889.6ms TimeCoverageRelationStatistics Valid=1555, Invalid=4451, Unknown=0, NotChecked=0, Total=6006 [2021-06-05 08:04:13,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6351 states. [2021-06-05 08:04:14,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6351 to 5278. [2021-06-05 08:04:14,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5278 states, 5277 states have (on average 2.8203524729960203) internal successors, (14883), 5277 states have internal predecessors, (14883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:14,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5278 states to 5278 states and 14883 transitions. [2021-06-05 08:04:14,036 INFO L78 Accepts]: Start accepts. Automaton has 5278 states and 14883 transitions. Word has length 160 [2021-06-05 08:04:14,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:04:14,036 INFO L482 AbstractCegarLoop]: Abstraction has 5278 states and 14883 transitions. [2021-06-05 08:04:14,036 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 5.161290322580645) internal successors, (160), 31 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:14,036 INFO L276 IsEmpty]: Start isEmpty. Operand 5278 states and 14883 transitions. [2021-06-05 08:04:14,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-06-05 08:04:14,040 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:04:14,040 INFO L521 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:04:14,240 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 343 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable347 [2021-06-05 08:04:14,240 INFO L430 AbstractCegarLoop]: === Iteration 349 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:04:14,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:04:14,241 INFO L82 PathProgramCache]: Analyzing trace with hash 1975759330, now seen corresponding path program 340 times [2021-06-05 08:04:14,241 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:04:14,241 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757908015] [2021-06-05 08:04:14,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:04:14,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:04:14,491 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:14,492 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:04:14,492 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757908015] [2021-06-05 08:04:14,492 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757908015] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:14,492 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1644806004] [2021-06-05 08:04:14,492 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 344 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 344 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:04:14,553 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 08:04:14,554 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:04:14,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 32 conjunts are in the unsatisfiable core [2021-06-05 08:04:14,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:04:14,770 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:14,771 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1644806004] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:14,771 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:04:14,771 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 32 [2021-06-05 08:04:14,771 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512416530] [2021-06-05 08:04:14,771 INFO L462 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-06-05 08:04:14,771 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:04:14,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-06-05 08:04:14,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=830, Unknown=0, NotChecked=0, Total=992 [2021-06-05 08:04:14,772 INFO L87 Difference]: Start difference. First operand 5278 states and 14883 transitions. Second operand has 32 states, 32 states have (on average 5.0625) internal successors, (162), 32 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:16,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:04:16,012 INFO L93 Difference]: Finished difference Result 6571 states and 17597 transitions. [2021-06-05 08:04:16,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-06-05 08:04:16,012 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.0625) internal successors, (162), 32 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 160 [2021-06-05 08:04:16,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:04:16,018 INFO L225 Difference]: With dead ends: 6571 [2021-06-05 08:04:16,018 INFO L226 Difference]: Without dead ends: 6301 [2021-06-05 08:04:16,019 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1664 ImplicationChecksByTransitivity, 1113.0ms TimeCoverageRelationStatistics Valid=1706, Invalid=4936, Unknown=0, NotChecked=0, Total=6642 [2021-06-05 08:04:16,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6301 states. [2021-06-05 08:04:16,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6301 to 5278. [2021-06-05 08:04:16,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5278 states, 5277 states have (on average 2.8203524729960203) internal successors, (14883), 5277 states have internal predecessors, (14883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:16,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5278 states to 5278 states and 14883 transitions. [2021-06-05 08:04:16,070 INFO L78 Accepts]: Start accepts. Automaton has 5278 states and 14883 transitions. Word has length 160 [2021-06-05 08:04:16,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:04:16,070 INFO L482 AbstractCegarLoop]: Abstraction has 5278 states and 14883 transitions. [2021-06-05 08:04:16,071 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 5.0625) internal successors, (162), 32 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:16,071 INFO L276 IsEmpty]: Start isEmpty. Operand 5278 states and 14883 transitions. [2021-06-05 08:04:16,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-06-05 08:04:16,074 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:04:16,074 INFO L521 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:04:16,275 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable348,344 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:04:16,275 INFO L430 AbstractCegarLoop]: === Iteration 350 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:04:16,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:04:16,275 INFO L82 PathProgramCache]: Analyzing trace with hash 96431440, now seen corresponding path program 341 times [2021-06-05 08:04:16,275 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:04:16,275 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161864605] [2021-06-05 08:04:16,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:04:16,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:04:16,525 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:16,525 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:04:16,525 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161864605] [2021-06-05 08:04:16,525 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161864605] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:16,525 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1617319715] [2021-06-05 08:04:16,526 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 345 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 345 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:04:16,589 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2021-06-05 08:04:16,589 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:04:16,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 32 conjunts are in the unsatisfiable core [2021-06-05 08:04:16,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:04:16,754 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:16,754 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1617319715] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:16,754 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:04:16,754 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 31 [2021-06-05 08:04:16,754 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555992242] [2021-06-05 08:04:16,755 INFO L462 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-06-05 08:04:16,755 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:04:16,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-06-05 08:04:16,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=754, Unknown=0, NotChecked=0, Total=930 [2021-06-05 08:04:16,755 INFO L87 Difference]: Start difference. First operand 5278 states and 14883 transitions. Second operand has 31 states, 31 states have (on average 5.161290322580645) internal successors, (160), 31 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:17,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:04:17,760 INFO L93 Difference]: Finished difference Result 6521 states and 17497 transitions. [2021-06-05 08:04:17,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-06-05 08:04:17,760 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.161290322580645) internal successors, (160), 31 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 160 [2021-06-05 08:04:17,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:04:17,767 INFO L225 Difference]: With dead ends: 6521 [2021-06-05 08:04:17,767 INFO L226 Difference]: Without dead ends: 6251 [2021-06-05 08:04:17,768 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1624 ImplicationChecksByTransitivity, 920.7ms TimeCoverageRelationStatistics Valid=1698, Invalid=4622, Unknown=0, NotChecked=0, Total=6320 [2021-06-05 08:04:17,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6251 states. [2021-06-05 08:04:17,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6251 to 5278. [2021-06-05 08:04:17,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5278 states, 5277 states have (on average 2.8203524729960203) internal successors, (14883), 5277 states have internal predecessors, (14883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:17,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5278 states to 5278 states and 14883 transitions. [2021-06-05 08:04:17,851 INFO L78 Accepts]: Start accepts. Automaton has 5278 states and 14883 transitions. Word has length 160 [2021-06-05 08:04:17,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:04:17,851 INFO L482 AbstractCegarLoop]: Abstraction has 5278 states and 14883 transitions. [2021-06-05 08:04:17,851 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 5.161290322580645) internal successors, (160), 31 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:17,851 INFO L276 IsEmpty]: Start isEmpty. Operand 5278 states and 14883 transitions. [2021-06-05 08:04:17,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-06-05 08:04:17,855 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:04:17,855 INFO L521 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:04:18,056 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 345 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable349 [2021-06-05 08:04:18,056 INFO L430 AbstractCegarLoop]: === Iteration 351 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:04:18,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:04:18,056 INFO L82 PathProgramCache]: Analyzing trace with hash 2126750752, now seen corresponding path program 342 times [2021-06-05 08:04:18,056 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:04:18,056 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077886750] [2021-06-05 08:04:18,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:04:18,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:04:18,311 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:18,311 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:04:18,311 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077886750] [2021-06-05 08:04:18,311 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077886750] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:18,312 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [158997296] [2021-06-05 08:04:18,312 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 346 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 346 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:04:18,387 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2021-06-05 08:04:18,387 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:04:18,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 32 conjunts are in the unsatisfiable core [2021-06-05 08:04:18,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:04:18,575 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:18,575 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [158997296] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:18,575 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:04:18,576 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 32 [2021-06-05 08:04:18,576 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289571680] [2021-06-05 08:04:18,576 INFO L462 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-06-05 08:04:18,576 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:04:18,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-06-05 08:04:18,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=815, Unknown=0, NotChecked=0, Total=992 [2021-06-05 08:04:18,576 INFO L87 Difference]: Start difference. First operand 5278 states and 14883 transitions. Second operand has 32 states, 32 states have (on average 5.0625) internal successors, (162), 32 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:19,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:04:19,826 INFO L93 Difference]: Finished difference Result 6471 states and 17397 transitions. [2021-06-05 08:04:19,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-06-05 08:04:19,827 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.0625) internal successors, (162), 32 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 160 [2021-06-05 08:04:19,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:04:19,835 INFO L225 Difference]: With dead ends: 6471 [2021-06-05 08:04:19,835 INFO L226 Difference]: Without dead ends: 6201 [2021-06-05 08:04:19,836 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1789 ImplicationChecksByTransitivity, 1153.8ms TimeCoverageRelationStatistics Valid=1857, Invalid=5115, Unknown=0, NotChecked=0, Total=6972 [2021-06-05 08:04:19,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6201 states. [2021-06-05 08:04:19,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6201 to 5278. [2021-06-05 08:04:19,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5278 states, 5277 states have (on average 2.8203524729960203) internal successors, (14883), 5277 states have internal predecessors, (14883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:19,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5278 states to 5278 states and 14883 transitions. [2021-06-05 08:04:19,897 INFO L78 Accepts]: Start accepts. Automaton has 5278 states and 14883 transitions. Word has length 160 [2021-06-05 08:04:19,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:04:19,897 INFO L482 AbstractCegarLoop]: Abstraction has 5278 states and 14883 transitions. [2021-06-05 08:04:19,898 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 5.0625) internal successors, (162), 32 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:19,898 INFO L276 IsEmpty]: Start isEmpty. Operand 5278 states and 14883 transitions. [2021-06-05 08:04:19,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-06-05 08:04:19,901 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:04:19,902 INFO L521 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:04:20,102 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable350,346 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:04:20,102 INFO L430 AbstractCegarLoop]: === Iteration 352 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:04:20,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:04:20,102 INFO L82 PathProgramCache]: Analyzing trace with hash -1553977074, now seen corresponding path program 343 times [2021-06-05 08:04:20,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:04:20,103 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737931906] [2021-06-05 08:04:20,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:04:20,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:04:20,356 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:20,356 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:04:20,356 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737931906] [2021-06-05 08:04:20,356 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737931906] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:20,356 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [86150846] [2021-06-05 08:04:20,356 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 347 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 347 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:04:20,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:04:20,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 32 conjunts are in the unsatisfiable core [2021-06-05 08:04:20,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:04:20,595 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:20,595 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [86150846] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:20,595 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:04:20,595 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 31 [2021-06-05 08:04:20,595 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034631605] [2021-06-05 08:04:20,595 INFO L462 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-06-05 08:04:20,595 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:04:20,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-06-05 08:04:20,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=736, Unknown=0, NotChecked=0, Total=930 [2021-06-05 08:04:20,596 INFO L87 Difference]: Start difference. First operand 5278 states and 14883 transitions. Second operand has 31 states, 31 states have (on average 5.161290322580645) internal successors, (160), 31 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:21,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:04:21,640 INFO L93 Difference]: Finished difference Result 6421 states and 17297 transitions. [2021-06-05 08:04:21,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-06-05 08:04:21,641 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.161290322580645) internal successors, (160), 31 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 160 [2021-06-05 08:04:21,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:04:21,647 INFO L225 Difference]: With dead ends: 6421 [2021-06-05 08:04:21,648 INFO L226 Difference]: Without dead ends: 6151 [2021-06-05 08:04:21,648 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1746 ImplicationChecksByTransitivity, 971.9ms TimeCoverageRelationStatistics Valid=1857, Invalid=4785, Unknown=0, NotChecked=0, Total=6642 [2021-06-05 08:04:21,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6151 states. [2021-06-05 08:04:21,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6151 to 5278. [2021-06-05 08:04:21,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5278 states, 5277 states have (on average 2.8203524729960203) internal successors, (14883), 5277 states have internal predecessors, (14883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:21,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5278 states to 5278 states and 14883 transitions. [2021-06-05 08:04:21,708 INFO L78 Accepts]: Start accepts. Automaton has 5278 states and 14883 transitions. Word has length 160 [2021-06-05 08:04:21,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:04:21,708 INFO L482 AbstractCegarLoop]: Abstraction has 5278 states and 14883 transitions. [2021-06-05 08:04:21,708 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 5.161290322580645) internal successors, (160), 31 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:21,708 INFO L276 IsEmpty]: Start isEmpty. Operand 5278 states and 14883 transitions. [2021-06-05 08:04:21,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-06-05 08:04:21,713 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:04:21,713 INFO L521 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:04:21,913 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable351,347 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:04:21,913 INFO L430 AbstractCegarLoop]: === Iteration 353 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:04:21,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:04:21,913 INFO L82 PathProgramCache]: Analyzing trace with hash 1025747934, now seen corresponding path program 344 times [2021-06-05 08:04:21,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:04:21,914 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209350403] [2021-06-05 08:04:21,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:04:21,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:04:22,165 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:22,166 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:04:22,166 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209350403] [2021-06-05 08:04:22,166 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209350403] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:22,166 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [462261555] [2021-06-05 08:04:22,166 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 348 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 348 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:04:22,229 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 08:04:22,229 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:04:22,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 32 conjunts are in the unsatisfiable core [2021-06-05 08:04:22,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:04:22,417 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:22,417 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [462261555] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:22,417 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:04:22,417 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 32 [2021-06-05 08:04:22,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84572409] [2021-06-05 08:04:22,418 INFO L462 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-06-05 08:04:22,418 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:04:22,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-06-05 08:04:22,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=796, Unknown=0, NotChecked=0, Total=992 [2021-06-05 08:04:22,418 INFO L87 Difference]: Start difference. First operand 5278 states and 14883 transitions. Second operand has 32 states, 32 states have (on average 5.0625) internal successors, (162), 32 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:23,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:04:23,799 INFO L93 Difference]: Finished difference Result 6879 states and 18563 transitions. [2021-06-05 08:04:23,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-06-05 08:04:23,800 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.0625) internal successors, (162), 32 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 160 [2021-06-05 08:04:23,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:04:23,805 INFO L225 Difference]: With dead ends: 6879 [2021-06-05 08:04:23,805 INFO L226 Difference]: Without dead ends: 6256 [2021-06-05 08:04:23,805 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2025 ImplicationChecksByTransitivity, 1236.0ms TimeCoverageRelationStatistics Valid=2045, Invalid=5611, Unknown=0, NotChecked=0, Total=7656 [2021-06-05 08:04:23,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6256 states. [2021-06-05 08:04:23,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6256 to 5188. [2021-06-05 08:04:23,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5188 states, 5187 states have (on average 2.82398303450935) internal successors, (14648), 5187 states have internal predecessors, (14648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:23,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5188 states to 5188 states and 14648 transitions. [2021-06-05 08:04:23,867 INFO L78 Accepts]: Start accepts. Automaton has 5188 states and 14648 transitions. Word has length 160 [2021-06-05 08:04:23,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:04:23,867 INFO L482 AbstractCegarLoop]: Abstraction has 5188 states and 14648 transitions. [2021-06-05 08:04:23,867 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 5.0625) internal successors, (162), 32 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:23,867 INFO L276 IsEmpty]: Start isEmpty. Operand 5188 states and 14648 transitions. [2021-06-05 08:04:23,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-06-05 08:04:23,872 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:04:23,872 INFO L521 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:04:24,072 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable352,348 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:04:24,072 INFO L430 AbstractCegarLoop]: === Iteration 354 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:04:24,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:04:24,073 INFO L82 PathProgramCache]: Analyzing trace with hash -6899668, now seen corresponding path program 345 times [2021-06-05 08:04:24,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:04:24,073 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770531946] [2021-06-05 08:04:24,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:04:24,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:04:24,329 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:24,330 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:04:24,330 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770531946] [2021-06-05 08:04:24,330 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770531946] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:24,330 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [641576639] [2021-06-05 08:04:24,330 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 349 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 349 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:04:24,405 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2021-06-05 08:04:24,405 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:04:24,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 32 conjunts are in the unsatisfiable core [2021-06-05 08:04:24,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:04:24,568 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:24,568 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [641576639] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:24,568 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:04:24,568 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 31 [2021-06-05 08:04:24,568 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793112851] [2021-06-05 08:04:24,568 INFO L462 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-06-05 08:04:24,568 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:04:24,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-06-05 08:04:24,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=216, Invalid=714, Unknown=0, NotChecked=0, Total=930 [2021-06-05 08:04:24,569 INFO L87 Difference]: Start difference. First operand 5188 states and 14648 transitions. Second operand has 31 states, 31 states have (on average 5.161290322580645) internal successors, (160), 31 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:25,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:04:25,638 INFO L93 Difference]: Finished difference Result 7108 states and 19281 transitions. [2021-06-05 08:04:25,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-06-05 08:04:25,639 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.161290322580645) internal successors, (160), 31 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 160 [2021-06-05 08:04:25,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:04:25,647 INFO L225 Difference]: With dead ends: 7108 [2021-06-05 08:04:25,647 INFO L226 Difference]: Without dead ends: 6838 [2021-06-05 08:04:25,648 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1871 ImplicationChecksByTransitivity, 1000.4ms TimeCoverageRelationStatistics Valid=2033, Invalid=4939, Unknown=0, NotChecked=0, Total=6972 [2021-06-05 08:04:25,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6838 states. [2021-06-05 08:04:25,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6838 to 5368. [2021-06-05 08:04:25,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5368 states, 5367 states have (on average 2.8334264952487422) internal successors, (15207), 5367 states have internal predecessors, (15207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:25,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5368 states to 5368 states and 15207 transitions. [2021-06-05 08:04:25,715 INFO L78 Accepts]: Start accepts. Automaton has 5368 states and 15207 transitions. Word has length 160 [2021-06-05 08:04:25,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:04:25,715 INFO L482 AbstractCegarLoop]: Abstraction has 5368 states and 15207 transitions. [2021-06-05 08:04:25,716 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 5.161290322580645) internal successors, (160), 31 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:25,716 INFO L276 IsEmpty]: Start isEmpty. Operand 5368 states and 15207 transitions. [2021-06-05 08:04:25,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-06-05 08:04:25,720 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:04:25,720 INFO L521 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:04:25,920 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 349 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable353 [2021-06-05 08:04:25,921 INFO L430 AbstractCegarLoop]: === Iteration 355 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:04:25,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:04:25,921 INFO L82 PathProgramCache]: Analyzing trace with hash 15443582, now seen corresponding path program 346 times [2021-06-05 08:04:25,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:04:25,921 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159002120] [2021-06-05 08:04:25,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:04:25,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:04:26,174 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:26,175 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:04:26,175 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159002120] [2021-06-05 08:04:26,175 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159002120] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:26,175 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1697737334] [2021-06-05 08:04:26,175 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 350 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 350 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:04:26,239 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 08:04:26,239 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:04:26,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 32 conjunts are in the unsatisfiable core [2021-06-05 08:04:26,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:04:26,417 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:26,418 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1697737334] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:26,418 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:04:26,418 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 32 [2021-06-05 08:04:26,418 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675942610] [2021-06-05 08:04:26,418 INFO L462 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-06-05 08:04:26,418 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:04:26,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-06-05 08:04:26,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=773, Unknown=0, NotChecked=0, Total=992 [2021-06-05 08:04:26,418 INFO L87 Difference]: Start difference. First operand 5368 states and 15207 transitions. Second operand has 32 states, 32 states have (on average 5.0625) internal successors, (162), 32 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:27,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:04:27,760 INFO L93 Difference]: Finished difference Result 6595 states and 17981 transitions. [2021-06-05 08:04:27,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-06-05 08:04:27,761 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.0625) internal successors, (162), 32 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 160 [2021-06-05 08:04:27,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:04:27,767 INFO L225 Difference]: With dead ends: 6595 [2021-06-05 08:04:27,767 INFO L226 Difference]: Without dead ends: 6106 [2021-06-05 08:04:27,768 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2051 ImplicationChecksByTransitivity, 1244.5ms TimeCoverageRelationStatistics Valid=2210, Invalid=5446, Unknown=0, NotChecked=0, Total=7656 [2021-06-05 08:04:27,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6106 states. [2021-06-05 08:04:27,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6106 to 3513. [2021-06-05 08:04:27,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3513 states, 3512 states have (on average 2.7414578587699316) internal successors, (9628), 3512 states have internal predecessors, (9628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:27,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3513 states to 3513 states and 9628 transitions. [2021-06-05 08:04:27,813 INFO L78 Accepts]: Start accepts. Automaton has 3513 states and 9628 transitions. Word has length 160 [2021-06-05 08:04:27,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:04:27,813 INFO L482 AbstractCegarLoop]: Abstraction has 3513 states and 9628 transitions. [2021-06-05 08:04:27,814 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 5.0625) internal successors, (162), 32 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:27,814 INFO L276 IsEmpty]: Start isEmpty. Operand 3513 states and 9628 transitions. [2021-06-05 08:04:27,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-06-05 08:04:27,816 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:04:27,816 INFO L521 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:04:28,017 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 350 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable354 [2021-06-05 08:04:28,017 INFO L430 AbstractCegarLoop]: === Iteration 356 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:04:28,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:04:28,017 INFO L82 PathProgramCache]: Analyzing trace with hash 278983457, now seen corresponding path program 347 times [2021-06-05 08:04:28,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:04:28,017 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846845044] [2021-06-05 08:04:28,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:04:28,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:04:28,359 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:28,359 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:04:28,359 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846845044] [2021-06-05 08:04:28,360 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846845044] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:28,360 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1267858757] [2021-06-05 08:04:28,360 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 351 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 351 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:04:28,427 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2021-06-05 08:04:28,427 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:04:28,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 33 conjunts are in the unsatisfiable core [2021-06-05 08:04:28,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:04:28,617 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:28,617 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1267858757] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:28,617 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:04:28,617 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2021-06-05 08:04:28,617 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188295769] [2021-06-05 08:04:28,617 INFO L462 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-06-05 08:04:28,617 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:04:28,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-06-05 08:04:28,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=773, Unknown=0, NotChecked=0, Total=992 [2021-06-05 08:04:28,618 INFO L87 Difference]: Start difference. First operand 3513 states and 9628 transitions. Second operand has 32 states, 32 states have (on average 5.15625) internal successors, (165), 32 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:29,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:04:29,244 INFO L93 Difference]: Finished difference Result 5231 states and 13267 transitions. [2021-06-05 08:04:29,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-05 08:04:29,244 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.15625) internal successors, (165), 32 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 165 [2021-06-05 08:04:29,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:04:29,249 INFO L225 Difference]: With dead ends: 5231 [2021-06-05 08:04:29,249 INFO L226 Difference]: Without dead ends: 4961 [2021-06-05 08:04:29,250 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 740 ImplicationChecksByTransitivity, 718.8ms TimeCoverageRelationStatistics Valid=1074, Invalid=2958, Unknown=0, NotChecked=0, Total=4032 [2021-06-05 08:04:29,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4961 states. [2021-06-05 08:04:29,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4961 to 3588. [2021-06-05 08:04:29,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3588 states, 3587 states have (on average 2.7468636743797044) internal successors, (9853), 3587 states have internal predecessors, (9853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:29,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3588 states to 3588 states and 9853 transitions. [2021-06-05 08:04:29,299 INFO L78 Accepts]: Start accepts. Automaton has 3588 states and 9853 transitions. Word has length 165 [2021-06-05 08:04:29,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:04:29,299 INFO L482 AbstractCegarLoop]: Abstraction has 3588 states and 9853 transitions. [2021-06-05 08:04:29,299 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 5.15625) internal successors, (165), 32 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:29,299 INFO L276 IsEmpty]: Start isEmpty. Operand 3588 states and 9853 transitions. [2021-06-05 08:04:29,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-06-05 08:04:29,302 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:04:29,302 INFO L521 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:04:29,503 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 351 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable355 [2021-06-05 08:04:29,503 INFO L430 AbstractCegarLoop]: === Iteration 357 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:04:29,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:04:29,503 INFO L82 PathProgramCache]: Analyzing trace with hash -222330383, now seen corresponding path program 348 times [2021-06-05 08:04:29,503 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:04:29,503 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312119098] [2021-06-05 08:04:29,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:04:29,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:04:29,864 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:29,865 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:04:29,865 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312119098] [2021-06-05 08:04:29,865 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312119098] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:29,865 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1133779167] [2021-06-05 08:04:29,865 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 352 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 352 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:04:29,941 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2021-06-05 08:04:29,941 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:04:29,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 33 conjunts are in the unsatisfiable core [2021-06-05 08:04:29,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:04:30,146 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:30,146 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1133779167] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:30,146 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:04:30,146 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 33 [2021-06-05 08:04:30,146 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675110933] [2021-06-05 08:04:30,146 INFO L462 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-06-05 08:04:30,146 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:04:30,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-06-05 08:04:30,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=846, Unknown=0, NotChecked=0, Total=1056 [2021-06-05 08:04:30,147 INFO L87 Difference]: Start difference. First operand 3588 states and 9853 transitions. Second operand has 33 states, 33 states have (on average 5.0606060606060606) internal successors, (167), 33 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:30,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:04:30,777 INFO L93 Difference]: Finished difference Result 5901 states and 14682 transitions. [2021-06-05 08:04:30,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-06-05 08:04:30,777 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 5.0606060606060606) internal successors, (167), 33 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 165 [2021-06-05 08:04:30,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:04:30,783 INFO L225 Difference]: With dead ends: 5901 [2021-06-05 08:04:30,783 INFO L226 Difference]: Without dead ends: 5631 [2021-06-05 08:04:30,784 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 854 ImplicationChecksByTransitivity, 778.3ms TimeCoverageRelationStatistics Valid=1139, Invalid=3283, Unknown=0, NotChecked=0, Total=4422 [2021-06-05 08:04:30,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5631 states. [2021-06-05 08:04:30,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5631 to 3663. [2021-06-05 08:04:30,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3663 states, 3662 states have (on average 2.75204806116876) internal successors, (10078), 3662 states have internal predecessors, (10078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:30,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3663 states to 3663 states and 10078 transitions. [2021-06-05 08:04:30,831 INFO L78 Accepts]: Start accepts. Automaton has 3663 states and 10078 transitions. Word has length 165 [2021-06-05 08:04:30,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:04:30,831 INFO L482 AbstractCegarLoop]: Abstraction has 3663 states and 10078 transitions. [2021-06-05 08:04:30,831 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 5.0606060606060606) internal successors, (167), 33 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:30,831 INFO L276 IsEmpty]: Start isEmpty. Operand 3663 states and 10078 transitions. [2021-06-05 08:04:30,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-06-05 08:04:30,834 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:04:30,834 INFO L521 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:04:31,035 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable356,352 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:04:31,035 INFO L430 AbstractCegarLoop]: === Iteration 358 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:04:31,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:04:31,035 INFO L82 PathProgramCache]: Analyzing trace with hash 254164959, now seen corresponding path program 349 times [2021-06-05 08:04:31,035 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:04:31,036 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490984552] [2021-06-05 08:04:31,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:04:31,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:04:31,348 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:31,348 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:04:31,348 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490984552] [2021-06-05 08:04:31,348 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490984552] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:31,348 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [24283136] [2021-06-05 08:04:31,349 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 353 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 353 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:04:31,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:04:31,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 33 conjunts are in the unsatisfiable core [2021-06-05 08:04:31,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:04:31,598 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:31,598 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [24283136] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:31,598 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:04:31,598 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2021-06-05 08:04:31,598 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690477825] [2021-06-05 08:04:31,598 INFO L462 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-06-05 08:04:31,598 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:04:31,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-06-05 08:04:31,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=794, Unknown=0, NotChecked=0, Total=992 [2021-06-05 08:04:31,599 INFO L87 Difference]: Start difference. First operand 3663 states and 10078 transitions. Second operand has 32 states, 32 states have (on average 5.15625) internal successors, (165), 32 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:32,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:04:32,207 INFO L93 Difference]: Finished difference Result 5931 states and 14817 transitions. [2021-06-05 08:04:32,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-05 08:04:32,207 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.15625) internal successors, (165), 32 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 165 [2021-06-05 08:04:32,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:04:32,213 INFO L225 Difference]: With dead ends: 5931 [2021-06-05 08:04:32,213 INFO L226 Difference]: Without dead ends: 5661 [2021-06-05 08:04:32,214 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 922 ImplicationChecksByTransitivity, 732.1ms TimeCoverageRelationStatistics Valid=1131, Invalid=3291, Unknown=0, NotChecked=0, Total=4422 [2021-06-05 08:04:32,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5661 states. [2021-06-05 08:04:32,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5661 to 3738. [2021-06-05 08:04:32,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3738 states, 3737 states have (on average 2.757024351083757) internal successors, (10303), 3737 states have internal predecessors, (10303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:32,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3738 states to 3738 states and 10303 transitions. [2021-06-05 08:04:32,288 INFO L78 Accepts]: Start accepts. Automaton has 3738 states and 10303 transitions. Word has length 165 [2021-06-05 08:04:32,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:04:32,288 INFO L482 AbstractCegarLoop]: Abstraction has 3738 states and 10303 transitions. [2021-06-05 08:04:32,288 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 5.15625) internal successors, (165), 32 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:32,288 INFO L276 IsEmpty]: Start isEmpty. Operand 3738 states and 10303 transitions. [2021-06-05 08:04:32,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-06-05 08:04:32,291 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:04:32,291 INFO L521 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:04:32,491 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 353 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable357 [2021-06-05 08:04:32,491 INFO L430 AbstractCegarLoop]: === Iteration 359 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:04:32,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:04:32,492 INFO L82 PathProgramCache]: Analyzing trace with hash 1720849071, now seen corresponding path program 350 times [2021-06-05 08:04:32,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:04:32,492 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562123844] [2021-06-05 08:04:32,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:04:32,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:04:32,819 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:32,819 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:04:32,819 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562123844] [2021-06-05 08:04:32,819 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562123844] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:32,819 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [638694913] [2021-06-05 08:04:32,819 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 354 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 354 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:04:32,884 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 08:04:32,884 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:04:32,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 33 conjunts are in the unsatisfiable core [2021-06-05 08:04:32,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:04:33,087 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:33,087 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [638694913] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:33,087 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:04:33,087 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 33 [2021-06-05 08:04:33,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851205387] [2021-06-05 08:04:33,087 INFO L462 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-06-05 08:04:33,087 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:04:33,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-06-05 08:04:33,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=866, Unknown=0, NotChecked=0, Total=1056 [2021-06-05 08:04:33,088 INFO L87 Difference]: Start difference. First operand 3738 states and 10303 transitions. Second operand has 33 states, 33 states have (on average 5.0606060606060606) internal successors, (167), 33 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:33,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:04:33,849 INFO L93 Difference]: Finished difference Result 5956 states and 14942 transitions. [2021-06-05 08:04:33,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-05 08:04:33,850 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 5.0606060606060606) internal successors, (167), 33 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 165 [2021-06-05 08:04:33,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:04:33,855 INFO L225 Difference]: With dead ends: 5956 [2021-06-05 08:04:33,855 INFO L226 Difference]: Without dead ends: 5686 [2021-06-05 08:04:33,856 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 943 ImplicationChecksByTransitivity, 831.2ms TimeCoverageRelationStatistics Valid=1153, Invalid=3539, Unknown=0, NotChecked=0, Total=4692 [2021-06-05 08:04:33,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5686 states. [2021-06-05 08:04:33,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5686 to 3813. [2021-06-05 08:04:33,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3813 states, 3812 states have (on average 2.7618048268625395) internal successors, (10528), 3812 states have internal predecessors, (10528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:33,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3813 states to 3813 states and 10528 transitions. [2021-06-05 08:04:33,903 INFO L78 Accepts]: Start accepts. Automaton has 3813 states and 10528 transitions. Word has length 165 [2021-06-05 08:04:33,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:04:33,903 INFO L482 AbstractCegarLoop]: Abstraction has 3813 states and 10528 transitions. [2021-06-05 08:04:33,903 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 5.0606060606060606) internal successors, (167), 33 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:33,904 INFO L276 IsEmpty]: Start isEmpty. Operand 3813 states and 10528 transitions. [2021-06-05 08:04:33,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-06-05 08:04:33,907 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:04:33,907 INFO L521 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:04:34,107 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable358,354 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:04:34,107 INFO L430 AbstractCegarLoop]: === Iteration 360 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:04:34,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:04:34,107 INFO L82 PathProgramCache]: Analyzing trace with hash 1585627677, now seen corresponding path program 351 times [2021-06-05 08:04:34,108 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:04:34,108 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430052841] [2021-06-05 08:04:34,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:04:34,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:04:34,414 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:34,414 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:04:34,414 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430052841] [2021-06-05 08:04:34,414 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430052841] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:34,414 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2030843437] [2021-06-05 08:04:34,414 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 355 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 355 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:04:34,492 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2021-06-05 08:04:34,492 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:04:34,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 33 conjunts are in the unsatisfiable core [2021-06-05 08:04:34,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:04:34,677 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:34,677 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2030843437] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:34,677 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:04:34,677 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2021-06-05 08:04:34,678 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533687730] [2021-06-05 08:04:34,678 INFO L462 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-06-05 08:04:34,678 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:04:34,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-06-05 08:04:34,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=811, Unknown=0, NotChecked=0, Total=992 [2021-06-05 08:04:34,678 INFO L87 Difference]: Start difference. First operand 3813 states and 10528 transitions. Second operand has 32 states, 32 states have (on average 5.15625) internal successors, (165), 32 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:35,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:04:35,389 INFO L93 Difference]: Finished difference Result 5981 states and 15067 transitions. [2021-06-05 08:04:35,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-05 08:04:35,389 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.15625) internal successors, (165), 32 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 165 [2021-06-05 08:04:35,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:04:35,394 INFO L225 Difference]: With dead ends: 5981 [2021-06-05 08:04:35,394 INFO L226 Difference]: Without dead ends: 5711 [2021-06-05 08:04:35,394 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1021 ImplicationChecksByTransitivity, 769.3ms TimeCoverageRelationStatistics Valid=1159, Invalid=3533, Unknown=0, NotChecked=0, Total=4692 [2021-06-05 08:04:35,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5711 states. [2021-06-05 08:04:35,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5711 to 3888. [2021-06-05 08:04:35,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3888 states, 3887 states have (on average 2.7664008232570105) internal successors, (10753), 3887 states have internal predecessors, (10753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:35,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3888 states to 3888 states and 10753 transitions. [2021-06-05 08:04:35,436 INFO L78 Accepts]: Start accepts. Automaton has 3888 states and 10753 transitions. Word has length 165 [2021-06-05 08:04:35,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:04:35,436 INFO L482 AbstractCegarLoop]: Abstraction has 3888 states and 10753 transitions. [2021-06-05 08:04:35,436 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 5.15625) internal successors, (165), 32 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:35,436 INFO L276 IsEmpty]: Start isEmpty. Operand 3888 states and 10753 transitions. [2021-06-05 08:04:35,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-06-05 08:04:35,439 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:04:35,439 INFO L521 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:04:35,640 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 355 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable359 [2021-06-05 08:04:35,640 INFO L430 AbstractCegarLoop]: === Iteration 361 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:04:35,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:04:35,640 INFO L82 PathProgramCache]: Analyzing trace with hash 708892909, now seen corresponding path program 352 times [2021-06-05 08:04:35,640 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:04:35,640 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108259635] [2021-06-05 08:04:35,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:04:35,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:04:35,956 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:35,956 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:04:35,956 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108259635] [2021-06-05 08:04:35,956 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108259635] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:35,956 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [214857074] [2021-06-05 08:04:35,957 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 356 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 356 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:04:36,025 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 08:04:36,025 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:04:36,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 33 conjunts are in the unsatisfiable core [2021-06-05 08:04:36,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:04:36,238 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:36,238 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [214857074] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:36,238 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:04:36,239 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 33 [2021-06-05 08:04:36,239 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716574437] [2021-06-05 08:04:36,239 INFO L462 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-06-05 08:04:36,239 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:04:36,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-06-05 08:04:36,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=882, Unknown=0, NotChecked=0, Total=1056 [2021-06-05 08:04:36,239 INFO L87 Difference]: Start difference. First operand 3888 states and 10753 transitions. Second operand has 33 states, 33 states have (on average 5.0606060606060606) internal successors, (167), 33 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:37,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:04:37,038 INFO L93 Difference]: Finished difference Result 6006 states and 15192 transitions. [2021-06-05 08:04:37,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-06-05 08:04:37,039 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 5.0606060606060606) internal successors, (167), 33 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 165 [2021-06-05 08:04:37,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:04:37,045 INFO L225 Difference]: With dead ends: 6006 [2021-06-05 08:04:37,045 INFO L226 Difference]: Without dead ends: 5736 [2021-06-05 08:04:37,045 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1045 ImplicationChecksByTransitivity, 852.0ms TimeCoverageRelationStatistics Valid=1183, Invalid=3787, Unknown=0, NotChecked=0, Total=4970 [2021-06-05 08:04:37,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5736 states. [2021-06-05 08:04:37,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5736 to 3963. [2021-06-05 08:04:37,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3963 states, 3962 states have (on average 2.7708228167592126) internal successors, (10978), 3962 states have internal predecessors, (10978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:37,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3963 states to 3963 states and 10978 transitions. [2021-06-05 08:04:37,095 INFO L78 Accepts]: Start accepts. Automaton has 3963 states and 10978 transitions. Word has length 165 [2021-06-05 08:04:37,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:04:37,095 INFO L482 AbstractCegarLoop]: Abstraction has 3963 states and 10978 transitions. [2021-06-05 08:04:37,095 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 5.0606060606060606) internal successors, (167), 33 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:37,095 INFO L276 IsEmpty]: Start isEmpty. Operand 3963 states and 10978 transitions. [2021-06-05 08:04:37,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-06-05 08:04:37,098 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:04:37,098 INFO L521 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:04:37,299 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable360,356 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:04:37,299 INFO L430 AbstractCegarLoop]: === Iteration 362 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:04:37,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:04:37,299 INFO L82 PathProgramCache]: Analyzing trace with hash -1028433445, now seen corresponding path program 353 times [2021-06-05 08:04:37,299 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:04:37,300 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29996970] [2021-06-05 08:04:37,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:04:37,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:04:37,595 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:37,595 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:04:37,595 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29996970] [2021-06-05 08:04:37,595 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29996970] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:37,595 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [50138047] [2021-06-05 08:04:37,595 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 357 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 357 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:04:37,662 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2021-06-05 08:04:37,662 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:04:37,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 33 conjunts are in the unsatisfiable core [2021-06-05 08:04:37,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:04:37,845 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:37,845 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [50138047] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:37,845 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:04:37,845 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2021-06-05 08:04:37,846 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296498952] [2021-06-05 08:04:37,846 INFO L462 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-06-05 08:04:37,846 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:04:37,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-06-05 08:04:37,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=824, Unknown=0, NotChecked=0, Total=992 [2021-06-05 08:04:37,846 INFO L87 Difference]: Start difference. First operand 3963 states and 10978 transitions. Second operand has 32 states, 32 states have (on average 5.15625) internal successors, (165), 32 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:38,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:04:38,586 INFO L93 Difference]: Finished difference Result 6031 states and 15317 transitions. [2021-06-05 08:04:38,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-05 08:04:38,586 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.15625) internal successors, (165), 32 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 165 [2021-06-05 08:04:38,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:04:38,592 INFO L225 Difference]: With dead ends: 6031 [2021-06-05 08:04:38,592 INFO L226 Difference]: Without dead ends: 5761 [2021-06-05 08:04:38,592 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1128 ImplicationChecksByTransitivity, 788.3ms TimeCoverageRelationStatistics Valid=1203, Invalid=3767, Unknown=0, NotChecked=0, Total=4970 [2021-06-05 08:04:38,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5761 states. [2021-06-05 08:04:38,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5761 to 4038. [2021-06-05 08:04:38,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4038 states, 4037 states have (on average 2.775080505325737) internal successors, (11203), 4037 states have internal predecessors, (11203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:38,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4038 states to 4038 states and 11203 transitions. [2021-06-05 08:04:38,642 INFO L78 Accepts]: Start accepts. Automaton has 4038 states and 11203 transitions. Word has length 165 [2021-06-05 08:04:38,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:04:38,642 INFO L482 AbstractCegarLoop]: Abstraction has 4038 states and 11203 transitions. [2021-06-05 08:04:38,643 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 5.15625) internal successors, (165), 32 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:38,643 INFO L276 IsEmpty]: Start isEmpty. Operand 4038 states and 11203 transitions. [2021-06-05 08:04:38,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-06-05 08:04:38,646 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:04:38,646 INFO L521 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:04:38,846 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable361,357 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:04:38,846 INFO L430 AbstractCegarLoop]: === Iteration 363 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:04:38,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:04:38,847 INFO L82 PathProgramCache]: Analyzing trace with hash 336114859, now seen corresponding path program 354 times [2021-06-05 08:04:38,847 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:04:38,847 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478109063] [2021-06-05 08:04:38,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:04:38,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:04:39,153 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:39,154 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:04:39,154 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478109063] [2021-06-05 08:04:39,154 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478109063] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:39,154 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [244109351] [2021-06-05 08:04:39,154 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 358 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 358 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:04:39,229 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2021-06-05 08:04:39,230 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:04:39,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 33 conjunts are in the unsatisfiable core [2021-06-05 08:04:39,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:04:39,456 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:39,456 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [244109351] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:39,456 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:04:39,457 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 33 [2021-06-05 08:04:39,457 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082517120] [2021-06-05 08:04:39,457 INFO L462 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-06-05 08:04:39,457 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:04:39,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-06-05 08:04:39,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=894, Unknown=0, NotChecked=0, Total=1056 [2021-06-05 08:04:39,457 INFO L87 Difference]: Start difference. First operand 4038 states and 11203 transitions. Second operand has 33 states, 33 states have (on average 5.0606060606060606) internal successors, (167), 33 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:40,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:04:40,304 INFO L93 Difference]: Finished difference Result 6056 states and 15442 transitions. [2021-06-05 08:04:40,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-06-05 08:04:40,305 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 5.0606060606060606) internal successors, (167), 33 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 165 [2021-06-05 08:04:40,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:04:40,311 INFO L225 Difference]: With dead ends: 6056 [2021-06-05 08:04:40,312 INFO L226 Difference]: Without dead ends: 5786 [2021-06-05 08:04:40,312 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1155 ImplicationChecksByTransitivity, 889.2ms TimeCoverageRelationStatistics Valid=1229, Invalid=4027, Unknown=0, NotChecked=0, Total=5256 [2021-06-05 08:04:40,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5786 states. [2021-06-05 08:04:40,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5786 to 4113. [2021-06-05 08:04:40,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4113 states, 4112 states have (on average 2.779182879377432) internal successors, (11428), 4112 states have internal predecessors, (11428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:40,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4113 states to 4113 states and 11428 transitions. [2021-06-05 08:04:40,364 INFO L78 Accepts]: Start accepts. Automaton has 4113 states and 11428 transitions. Word has length 165 [2021-06-05 08:04:40,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:04:40,364 INFO L482 AbstractCegarLoop]: Abstraction has 4113 states and 11428 transitions. [2021-06-05 08:04:40,364 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 5.0606060606060606) internal successors, (167), 33 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:40,365 INFO L276 IsEmpty]: Start isEmpty. Operand 4113 states and 11428 transitions. [2021-06-05 08:04:40,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-06-05 08:04:40,368 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:04:40,368 INFO L521 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:04:40,568 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable362,358 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:04:40,568 INFO L430 AbstractCegarLoop]: === Iteration 364 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:04:40,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:04:40,569 INFO L82 PathProgramCache]: Analyzing trace with hash -1941117159, now seen corresponding path program 355 times [2021-06-05 08:04:40,569 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:04:40,569 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763937745] [2021-06-05 08:04:40,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:04:40,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:04:40,866 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:40,866 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:04:40,866 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763937745] [2021-06-05 08:04:40,866 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763937745] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:40,866 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [838836313] [2021-06-05 08:04:40,866 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 359 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 359 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:04:40,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:04:40,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 33 conjunts are in the unsatisfiable core [2021-06-05 08:04:40,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:04:41,136 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:41,136 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [838836313] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:41,136 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:04:41,136 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2021-06-05 08:04:41,136 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108167296] [2021-06-05 08:04:41,136 INFO L462 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-06-05 08:04:41,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:04:41,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-06-05 08:04:41,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=833, Unknown=0, NotChecked=0, Total=992 [2021-06-05 08:04:41,137 INFO L87 Difference]: Start difference. First operand 4113 states and 11428 transitions. Second operand has 32 states, 32 states have (on average 5.15625) internal successors, (165), 32 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:41,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:04:41,884 INFO L93 Difference]: Finished difference Result 6081 states and 15567 transitions. [2021-06-05 08:04:41,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-06-05 08:04:41,884 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.15625) internal successors, (165), 32 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 165 [2021-06-05 08:04:41,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:04:41,889 INFO L225 Difference]: With dead ends: 6081 [2021-06-05 08:04:41,889 INFO L226 Difference]: Without dead ends: 5811 [2021-06-05 08:04:41,890 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1239 ImplicationChecksByTransitivity, 802.6ms TimeCoverageRelationStatistics Valid=1263, Invalid=3993, Unknown=0, NotChecked=0, Total=5256 [2021-06-05 08:04:41,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5811 states. [2021-06-05 08:04:41,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5811 to 4188. [2021-06-05 08:04:41,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4188 states, 4187 states have (on average 2.7831382851683784) internal successors, (11653), 4187 states have internal predecessors, (11653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:41,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4188 states to 4188 states and 11653 transitions. [2021-06-05 08:04:41,936 INFO L78 Accepts]: Start accepts. Automaton has 4188 states and 11653 transitions. Word has length 165 [2021-06-05 08:04:41,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:04:41,936 INFO L482 AbstractCegarLoop]: Abstraction has 4188 states and 11653 transitions. [2021-06-05 08:04:41,936 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 5.15625) internal successors, (165), 32 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:41,936 INFO L276 IsEmpty]: Start isEmpty. Operand 4188 states and 11653 transitions. [2021-06-05 08:04:41,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-06-05 08:04:41,939 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:04:41,939 INFO L521 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:04:42,139 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 359 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable363 [2021-06-05 08:04:42,140 INFO L430 AbstractCegarLoop]: === Iteration 365 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:04:42,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:04:42,140 INFO L82 PathProgramCache]: Analyzing trace with hash 1455326697, now seen corresponding path program 356 times [2021-06-05 08:04:42,140 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:04:42,140 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881923196] [2021-06-05 08:04:42,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:04:42,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:04:42,435 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:42,435 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:04:42,435 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881923196] [2021-06-05 08:04:42,436 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881923196] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:42,436 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [402085856] [2021-06-05 08:04:42,436 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 360 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 360 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:04:42,499 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 08:04:42,499 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:04:42,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 33 conjunts are in the unsatisfiable core [2021-06-05 08:04:42,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:04:42,696 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:42,696 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [402085856] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:42,696 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:04:42,696 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 33 [2021-06-05 08:04:42,696 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589912223] [2021-06-05 08:04:42,696 INFO L462 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-06-05 08:04:42,696 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:04:42,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-06-05 08:04:42,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=902, Unknown=0, NotChecked=0, Total=1056 [2021-06-05 08:04:42,697 INFO L87 Difference]: Start difference. First operand 4188 states and 11653 transitions. Second operand has 33 states, 33 states have (on average 5.0606060606060606) internal successors, (167), 33 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:43,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:04:43,577 INFO L93 Difference]: Finished difference Result 6106 states and 15692 transitions. [2021-06-05 08:04:43,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-06-05 08:04:43,577 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 5.0606060606060606) internal successors, (167), 33 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 165 [2021-06-05 08:04:43,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:04:43,583 INFO L225 Difference]: With dead ends: 6106 [2021-06-05 08:04:43,583 INFO L226 Difference]: Without dead ends: 5836 [2021-06-05 08:04:43,584 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1269 ImplicationChecksByTransitivity, 915.7ms TimeCoverageRelationStatistics Valid=1291, Invalid=4259, Unknown=0, NotChecked=0, Total=5550 [2021-06-05 08:04:43,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5836 states. [2021-06-05 08:04:43,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5836 to 4263. [2021-06-05 08:04:43,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4263 states, 4262 states have (on average 2.786954481464101) internal successors, (11878), 4262 states have internal predecessors, (11878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:43,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4263 states to 4263 states and 11878 transitions. [2021-06-05 08:04:43,662 INFO L78 Accepts]: Start accepts. Automaton has 4263 states and 11878 transitions. Word has length 165 [2021-06-05 08:04:43,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:04:43,662 INFO L482 AbstractCegarLoop]: Abstraction has 4263 states and 11878 transitions. [2021-06-05 08:04:43,662 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 5.0606060606060606) internal successors, (167), 33 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:43,662 INFO L276 IsEmpty]: Start isEmpty. Operand 4263 states and 11878 transitions. [2021-06-05 08:04:43,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-06-05 08:04:43,666 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:04:43,666 INFO L521 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:04:43,866 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable364,360 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:04:43,866 INFO L430 AbstractCegarLoop]: === Iteration 366 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:04:43,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:04:43,867 INFO L82 PathProgramCache]: Analyzing trace with hash -159626793, now seen corresponding path program 357 times [2021-06-05 08:04:43,867 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:04:43,867 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262773559] [2021-06-05 08:04:43,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:04:43,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:04:44,145 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:44,146 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:04:44,146 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262773559] [2021-06-05 08:04:44,146 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262773559] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:44,146 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [208235608] [2021-06-05 08:04:44,146 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 361 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 361 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:04:44,221 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2021-06-05 08:04:44,221 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:04:44,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 33 conjunts are in the unsatisfiable core [2021-06-05 08:04:44,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:04:44,399 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:44,399 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [208235608] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:44,399 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:04:44,400 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2021-06-05 08:04:44,400 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35230853] [2021-06-05 08:04:44,400 INFO L462 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-06-05 08:04:44,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:04:44,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-06-05 08:04:44,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=838, Unknown=0, NotChecked=0, Total=992 [2021-06-05 08:04:44,400 INFO L87 Difference]: Start difference. First operand 4263 states and 11878 transitions. Second operand has 32 states, 32 states have (on average 5.15625) internal successors, (165), 32 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:45,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:04:45,181 INFO L93 Difference]: Finished difference Result 6131 states and 15817 transitions. [2021-06-05 08:04:45,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-06-05 08:04:45,182 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.15625) internal successors, (165), 32 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 165 [2021-06-05 08:04:45,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:04:45,188 INFO L225 Difference]: With dead ends: 6131 [2021-06-05 08:04:45,189 INFO L226 Difference]: Without dead ends: 5861 [2021-06-05 08:04:45,189 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1354 ImplicationChecksByTransitivity, 825.9ms TimeCoverageRelationStatistics Valid=1339, Invalid=4211, Unknown=0, NotChecked=0, Total=5550 [2021-06-05 08:04:45,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5861 states. [2021-06-05 08:04:45,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5861 to 4338. [2021-06-05 08:04:45,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4338 states, 4337 states have (on average 2.790638690338944) internal successors, (12103), 4337 states have internal predecessors, (12103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:45,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4338 states to 4338 states and 12103 transitions. [2021-06-05 08:04:45,239 INFO L78 Accepts]: Start accepts. Automaton has 4338 states and 12103 transitions. Word has length 165 [2021-06-05 08:04:45,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:04:45,239 INFO L482 AbstractCegarLoop]: Abstraction has 4338 states and 12103 transitions. [2021-06-05 08:04:45,240 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 5.15625) internal successors, (165), 32 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:45,240 INFO L276 IsEmpty]: Start isEmpty. Operand 4338 states and 12103 transitions. [2021-06-05 08:04:45,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-06-05 08:04:45,243 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:04:45,243 INFO L521 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:04:45,443 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 361 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable365 [2021-06-05 08:04:45,443 INFO L430 AbstractCegarLoop]: === Iteration 367 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:04:45,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:04:45,444 INFO L82 PathProgramCache]: Analyzing trace with hash -540070745, now seen corresponding path program 358 times [2021-06-05 08:04:45,444 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:04:45,444 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56094053] [2021-06-05 08:04:45,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:04:45,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:04:45,731 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:45,731 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:04:45,731 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56094053] [2021-06-05 08:04:45,731 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56094053] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:45,731 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1658564657] [2021-06-05 08:04:45,731 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 362 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 362 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:04:45,794 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 08:04:45,794 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:04:45,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 33 conjunts are in the unsatisfiable core [2021-06-05 08:04:45,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:04:45,986 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:45,987 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1658564657] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:45,987 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:04:45,987 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 33 [2021-06-05 08:04:45,987 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63793437] [2021-06-05 08:04:45,987 INFO L462 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-06-05 08:04:45,987 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:04:45,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-06-05 08:04:45,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=906, Unknown=0, NotChecked=0, Total=1056 [2021-06-05 08:04:45,988 INFO L87 Difference]: Start difference. First operand 4338 states and 12103 transitions. Second operand has 33 states, 33 states have (on average 5.0606060606060606) internal successors, (167), 33 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:46,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:04:46,916 INFO L93 Difference]: Finished difference Result 6156 states and 15942 transitions. [2021-06-05 08:04:46,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-06-05 08:04:46,917 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 5.0606060606060606) internal successors, (167), 33 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 165 [2021-06-05 08:04:46,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:04:46,921 INFO L225 Difference]: With dead ends: 6156 [2021-06-05 08:04:46,921 INFO L226 Difference]: Without dead ends: 5886 [2021-06-05 08:04:46,922 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1387 ImplicationChecksByTransitivity, 955.2ms TimeCoverageRelationStatistics Valid=1369, Invalid=4483, Unknown=0, NotChecked=0, Total=5852 [2021-06-05 08:04:46,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5886 states. [2021-06-05 08:04:46,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5886 to 4413. [2021-06-05 08:04:46,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4413 states, 4412 states have (on average 2.7941976427923843) internal successors, (12328), 4412 states have internal predecessors, (12328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:46,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4413 states to 4413 states and 12328 transitions. [2021-06-05 08:04:46,969 INFO L78 Accepts]: Start accepts. Automaton has 4413 states and 12328 transitions. Word has length 165 [2021-06-05 08:04:46,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:04:46,970 INFO L482 AbstractCegarLoop]: Abstraction has 4413 states and 12328 transitions. [2021-06-05 08:04:46,970 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 5.0606060606060606) internal successors, (167), 33 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:46,970 INFO L276 IsEmpty]: Start isEmpty. Operand 4413 states and 12328 transitions. [2021-06-05 08:04:46,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-06-05 08:04:46,973 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:04:46,973 INFO L521 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:04:47,173 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 362 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable366 [2021-06-05 08:04:47,173 INFO L430 AbstractCegarLoop]: === Iteration 368 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:04:47,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:04:47,174 INFO L82 PathProgramCache]: Analyzing trace with hash 84304405, now seen corresponding path program 359 times [2021-06-05 08:04:47,174 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:04:47,174 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52135448] [2021-06-05 08:04:47,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:04:47,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:04:47,444 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:47,444 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:04:47,444 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52135448] [2021-06-05 08:04:47,444 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52135448] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:47,444 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [324435330] [2021-06-05 08:04:47,444 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 363 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 363 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:04:47,509 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2021-06-05 08:04:47,509 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:04:47,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 33 conjunts are in the unsatisfiable core [2021-06-05 08:04:47,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:04:47,687 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:47,688 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [324435330] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:47,688 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:04:47,688 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2021-06-05 08:04:47,688 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363170468] [2021-06-05 08:04:47,688 INFO L462 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-06-05 08:04:47,688 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:04:47,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-06-05 08:04:47,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=839, Unknown=0, NotChecked=0, Total=992 [2021-06-05 08:04:47,689 INFO L87 Difference]: Start difference. First operand 4413 states and 12328 transitions. Second operand has 32 states, 32 states have (on average 5.15625) internal successors, (165), 32 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:48,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:04:48,519 INFO L93 Difference]: Finished difference Result 6181 states and 16067 transitions. [2021-06-05 08:04:48,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-06-05 08:04:48,520 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.15625) internal successors, (165), 32 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 165 [2021-06-05 08:04:48,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:04:48,526 INFO L225 Difference]: With dead ends: 6181 [2021-06-05 08:04:48,526 INFO L226 Difference]: Without dead ends: 5911 [2021-06-05 08:04:48,527 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1473 ImplicationChecksByTransitivity, 850.7ms TimeCoverageRelationStatistics Valid=1431, Invalid=4421, Unknown=0, NotChecked=0, Total=5852 [2021-06-05 08:04:48,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5911 states. [2021-06-05 08:04:48,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5911 to 4488. [2021-06-05 08:04:48,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4488 states, 4487 states have (on average 2.797637619790506) internal successors, (12553), 4487 states have internal predecessors, (12553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:48,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4488 states to 4488 states and 12553 transitions. [2021-06-05 08:04:48,578 INFO L78 Accepts]: Start accepts. Automaton has 4488 states and 12553 transitions. Word has length 165 [2021-06-05 08:04:48,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:04:48,578 INFO L482 AbstractCegarLoop]: Abstraction has 4488 states and 12553 transitions. [2021-06-05 08:04:48,578 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 5.15625) internal successors, (165), 32 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:48,578 INFO L276 IsEmpty]: Start isEmpty. Operand 4488 states and 12553 transitions. [2021-06-05 08:04:48,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-06-05 08:04:48,582 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:04:48,582 INFO L521 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:04:48,792 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 363 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable367 [2021-06-05 08:04:48,793 INFO L430 AbstractCegarLoop]: === Iteration 369 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:04:48,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:04:48,793 INFO L82 PathProgramCache]: Analyzing trace with hash 893356261, now seen corresponding path program 360 times [2021-06-05 08:04:48,793 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:04:48,793 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307805473] [2021-06-05 08:04:48,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:04:48,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:04:49,071 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:49,071 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:04:49,071 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307805473] [2021-06-05 08:04:49,071 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307805473] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:49,071 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [866702529] [2021-06-05 08:04:49,071 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 364 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 364 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:04:49,146 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2021-06-05 08:04:49,146 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:04:49,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 33 conjunts are in the unsatisfiable core [2021-06-05 08:04:49,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:04:49,365 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:49,365 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [866702529] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:49,366 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:04:49,366 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 33 [2021-06-05 08:04:49,366 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707437136] [2021-06-05 08:04:49,366 INFO L462 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-06-05 08:04:49,366 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:04:49,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-06-05 08:04:49,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=906, Unknown=0, NotChecked=0, Total=1056 [2021-06-05 08:04:49,366 INFO L87 Difference]: Start difference. First operand 4488 states and 12553 transitions. Second operand has 33 states, 33 states have (on average 5.0606060606060606) internal successors, (167), 33 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:50,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:04:50,336 INFO L93 Difference]: Finished difference Result 6206 states and 16192 transitions. [2021-06-05 08:04:50,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-06-05 08:04:50,336 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 5.0606060606060606) internal successors, (167), 33 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 165 [2021-06-05 08:04:50,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:04:50,342 INFO L225 Difference]: With dead ends: 6206 [2021-06-05 08:04:50,342 INFO L226 Difference]: Without dead ends: 5936 [2021-06-05 08:04:50,343 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1509 ImplicationChecksByTransitivity, 992.5ms TimeCoverageRelationStatistics Valid=1463, Invalid=4699, Unknown=0, NotChecked=0, Total=6162 [2021-06-05 08:04:50,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5936 states. [2021-06-05 08:04:50,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5936 to 4563. [2021-06-05 08:04:50,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4563 states, 4562 states have (on average 2.800964489259097) internal successors, (12778), 4562 states have internal predecessors, (12778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:50,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4563 states to 4563 states and 12778 transitions. [2021-06-05 08:04:50,395 INFO L78 Accepts]: Start accepts. Automaton has 4563 states and 12778 transitions. Word has length 165 [2021-06-05 08:04:50,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:04:50,395 INFO L482 AbstractCegarLoop]: Abstraction has 4563 states and 12778 transitions. [2021-06-05 08:04:50,395 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 5.0606060606060606) internal successors, (167), 33 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:50,395 INFO L276 IsEmpty]: Start isEmpty. Operand 4563 states and 12778 transitions. [2021-06-05 08:04:50,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-06-05 08:04:50,398 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:04:50,399 INFO L521 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:04:50,599 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 364 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable368 [2021-06-05 08:04:50,599 INFO L430 AbstractCegarLoop]: === Iteration 370 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:04:50,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:04:50,599 INFO L82 PathProgramCache]: Analyzing trace with hash -498593837, now seen corresponding path program 361 times [2021-06-05 08:04:50,599 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:04:50,599 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588294883] [2021-06-05 08:04:50,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:04:50,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:04:50,889 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:50,890 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:04:50,890 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588294883] [2021-06-05 08:04:50,890 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588294883] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:50,890 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1681684350] [2021-06-05 08:04:50,890 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 365 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 365 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:04:50,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:04:50,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 33 conjunts are in the unsatisfiable core [2021-06-05 08:04:50,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:04:51,123 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:51,123 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1681684350] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:51,123 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:04:51,123 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2021-06-05 08:04:51,123 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481282209] [2021-06-05 08:04:51,124 INFO L462 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-06-05 08:04:51,124 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:04:51,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-06-05 08:04:51,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=836, Unknown=0, NotChecked=0, Total=992 [2021-06-05 08:04:51,124 INFO L87 Difference]: Start difference. First operand 4563 states and 12778 transitions. Second operand has 32 states, 32 states have (on average 5.15625) internal successors, (165), 32 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:51,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:04:51,979 INFO L93 Difference]: Finished difference Result 6231 states and 16317 transitions. [2021-06-05 08:04:51,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-06-05 08:04:51,980 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.15625) internal successors, (165), 32 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 165 [2021-06-05 08:04:51,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:04:51,985 INFO L225 Difference]: With dead ends: 6231 [2021-06-05 08:04:51,986 INFO L226 Difference]: Without dead ends: 5961 [2021-06-05 08:04:51,986 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1596 ImplicationChecksByTransitivity, 888.3ms TimeCoverageRelationStatistics Valid=1539, Invalid=4623, Unknown=0, NotChecked=0, Total=6162 [2021-06-05 08:04:51,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5961 states. [2021-06-05 08:04:52,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5961 to 4638. [2021-06-05 08:04:52,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4638 states, 4637 states have (on average 2.8041837394867373) internal successors, (13003), 4637 states have internal predecessors, (13003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:52,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4638 states to 4638 states and 13003 transitions. [2021-06-05 08:04:52,073 INFO L78 Accepts]: Start accepts. Automaton has 4638 states and 13003 transitions. Word has length 165 [2021-06-05 08:04:52,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:04:52,073 INFO L482 AbstractCegarLoop]: Abstraction has 4638 states and 13003 transitions. [2021-06-05 08:04:52,073 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 5.15625) internal successors, (165), 32 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:52,073 INFO L276 IsEmpty]: Start isEmpty. Operand 4638 states and 13003 transitions. [2021-06-05 08:04:52,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-06-05 08:04:52,077 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:04:52,077 INFO L521 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:04:52,277 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable369,365 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:04:52,277 INFO L430 AbstractCegarLoop]: === Iteration 371 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:04:52,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:04:52,278 INFO L82 PathProgramCache]: Analyzing trace with hash -743671133, now seen corresponding path program 362 times [2021-06-05 08:04:52,278 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:04:52,278 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316492370] [2021-06-05 08:04:52,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:04:52,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:04:52,551 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:52,551 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:04:52,551 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316492370] [2021-06-05 08:04:52,551 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316492370] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:52,551 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1376641895] [2021-06-05 08:04:52,552 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 366 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 366 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:04:52,613 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 08:04:52,614 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:04:52,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 33 conjunts are in the unsatisfiable core [2021-06-05 08:04:52,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:04:52,805 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:52,805 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1376641895] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:52,805 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:04:52,805 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 33 [2021-06-05 08:04:52,805 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943529984] [2021-06-05 08:04:52,806 INFO L462 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-06-05 08:04:52,806 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:04:52,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-06-05 08:04:52,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=902, Unknown=0, NotChecked=0, Total=1056 [2021-06-05 08:04:52,806 INFO L87 Difference]: Start difference. First operand 4638 states and 13003 transitions. Second operand has 33 states, 33 states have (on average 5.0606060606060606) internal successors, (167), 33 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:53,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:04:53,842 INFO L93 Difference]: Finished difference Result 6256 states and 16442 transitions. [2021-06-05 08:04:53,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-06-05 08:04:53,843 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 5.0606060606060606) internal successors, (167), 33 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 165 [2021-06-05 08:04:53,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:04:53,848 INFO L225 Difference]: With dead ends: 6256 [2021-06-05 08:04:53,848 INFO L226 Difference]: Without dead ends: 5986 [2021-06-05 08:04:53,849 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1635 ImplicationChecksByTransitivity, 1039.6ms TimeCoverageRelationStatistics Valid=1573, Invalid=4907, Unknown=0, NotChecked=0, Total=6480 [2021-06-05 08:04:53,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5986 states. [2021-06-05 08:04:53,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5986 to 4713. [2021-06-05 08:04:53,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4713 states, 4712 states have (on average 2.807300509337861) internal successors, (13228), 4712 states have internal predecessors, (13228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:53,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4713 states to 4713 states and 13228 transitions. [2021-06-05 08:04:53,904 INFO L78 Accepts]: Start accepts. Automaton has 4713 states and 13228 transitions. Word has length 165 [2021-06-05 08:04:53,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:04:53,904 INFO L482 AbstractCegarLoop]: Abstraction has 4713 states and 13228 transitions. [2021-06-05 08:04:53,904 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 5.0606060606060606) internal successors, (167), 33 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:53,905 INFO L276 IsEmpty]: Start isEmpty. Operand 4713 states and 13228 transitions. [2021-06-05 08:04:53,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-06-05 08:04:53,908 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:04:53,908 INFO L521 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:04:54,108 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 366 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable370 [2021-06-05 08:04:54,109 INFO L430 AbstractCegarLoop]: === Iteration 372 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:04:54,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:04:54,109 INFO L82 PathProgramCache]: Analyzing trace with hash -1120521455, now seen corresponding path program 363 times [2021-06-05 08:04:54,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:04:54,109 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028499006] [2021-06-05 08:04:54,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:04:54,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:04:54,377 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:54,377 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:04:54,377 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028499006] [2021-06-05 08:04:54,377 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028499006] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:54,377 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [299613083] [2021-06-05 08:04:54,377 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 367 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 367 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:04:54,452 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2021-06-05 08:04:54,452 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:04:54,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 33 conjunts are in the unsatisfiable core [2021-06-05 08:04:54,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:04:54,624 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:54,624 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [299613083] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:54,624 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:04:54,624 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2021-06-05 08:04:54,624 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412166796] [2021-06-05 08:04:54,624 INFO L462 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-06-05 08:04:54,624 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:04:54,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-06-05 08:04:54,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=829, Unknown=0, NotChecked=0, Total=992 [2021-06-05 08:04:54,625 INFO L87 Difference]: Start difference. First operand 4713 states and 13228 transitions. Second operand has 32 states, 32 states have (on average 5.15625) internal successors, (165), 32 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:55,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:04:55,536 INFO L93 Difference]: Finished difference Result 6281 states and 16567 transitions. [2021-06-05 08:04:55,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-06-05 08:04:55,537 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.15625) internal successors, (165), 32 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 165 [2021-06-05 08:04:55,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:04:55,542 INFO L225 Difference]: With dead ends: 6281 [2021-06-05 08:04:55,542 INFO L226 Difference]: Without dead ends: 6011 [2021-06-05 08:04:55,542 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1723 ImplicationChecksByTransitivity, 920.2ms TimeCoverageRelationStatistics Valid=1663, Invalid=4817, Unknown=0, NotChecked=0, Total=6480 [2021-06-05 08:04:55,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6011 states. [2021-06-05 08:04:55,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6011 to 4788. [2021-06-05 08:04:55,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4788 states, 4787 states have (on average 2.810319615625653) internal successors, (13453), 4787 states have internal predecessors, (13453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:55,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4788 states to 4788 states and 13453 transitions. [2021-06-05 08:04:55,595 INFO L78 Accepts]: Start accepts. Automaton has 4788 states and 13453 transitions. Word has length 165 [2021-06-05 08:04:55,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:04:55,595 INFO L482 AbstractCegarLoop]: Abstraction has 4788 states and 13453 transitions. [2021-06-05 08:04:55,596 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 5.15625) internal successors, (165), 32 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:55,596 INFO L276 IsEmpty]: Start isEmpty. Operand 4788 states and 13453 transitions. [2021-06-05 08:04:55,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-06-05 08:04:55,599 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:04:55,599 INFO L521 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:04:55,799 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable371,367 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:04:55,800 INFO L430 AbstractCegarLoop]: === Iteration 373 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:04:55,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:04:55,800 INFO L82 PathProgramCache]: Analyzing trace with hash 206234081, now seen corresponding path program 364 times [2021-06-05 08:04:55,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:04:55,800 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675524208] [2021-06-05 08:04:55,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:04:55,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:04:56,078 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:56,078 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:04:56,078 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675524208] [2021-06-05 08:04:56,078 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675524208] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:56,078 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [693706321] [2021-06-05 08:04:56,078 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 368 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 368 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:04:56,141 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 08:04:56,141 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:04:56,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 33 conjunts are in the unsatisfiable core [2021-06-05 08:04:56,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:04:56,328 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:56,328 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [693706321] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:56,328 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:04:56,328 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 33 [2021-06-05 08:04:56,328 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451755620] [2021-06-05 08:04:56,328 INFO L462 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-06-05 08:04:56,328 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:04:56,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-06-05 08:04:56,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=894, Unknown=0, NotChecked=0, Total=1056 [2021-06-05 08:04:56,329 INFO L87 Difference]: Start difference. First operand 4788 states and 13453 transitions. Second operand has 33 states, 33 states have (on average 5.0606060606060606) internal successors, (167), 33 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:57,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:04:57,442 INFO L93 Difference]: Finished difference Result 6306 states and 16692 transitions. [2021-06-05 08:04:57,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-06-05 08:04:57,443 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 5.0606060606060606) internal successors, (167), 33 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 165 [2021-06-05 08:04:57,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:04:57,448 INFO L225 Difference]: With dead ends: 6306 [2021-06-05 08:04:57,448 INFO L226 Difference]: Without dead ends: 6036 [2021-06-05 08:04:57,449 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1765 ImplicationChecksByTransitivity, 1081.2ms TimeCoverageRelationStatistics Valid=1699, Invalid=5107, Unknown=0, NotChecked=0, Total=6806 [2021-06-05 08:04:57,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6036 states. [2021-06-05 08:04:57,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6036 to 4863. [2021-06-05 08:04:57,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4863 states, 4862 states have (on average 2.8132455779514602) internal successors, (13678), 4862 states have internal predecessors, (13678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:57,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4863 states to 4863 states and 13678 transitions. [2021-06-05 08:04:57,504 INFO L78 Accepts]: Start accepts. Automaton has 4863 states and 13678 transitions. Word has length 165 [2021-06-05 08:04:57,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:04:57,504 INFO L482 AbstractCegarLoop]: Abstraction has 4863 states and 13678 transitions. [2021-06-05 08:04:57,504 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 5.0606060606060606) internal successors, (167), 33 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:57,504 INFO L276 IsEmpty]: Start isEmpty. Operand 4863 states and 13678 transitions. [2021-06-05 08:04:57,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-06-05 08:04:57,508 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:04:57,508 INFO L521 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:04:57,708 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable372,368 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:04:57,708 INFO L430 AbstractCegarLoop]: === Iteration 374 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:04:57,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:04:57,709 INFO L82 PathProgramCache]: Analyzing trace with hash 660450255, now seen corresponding path program 365 times [2021-06-05 08:04:57,709 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:04:57,709 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126808403] [2021-06-05 08:04:57,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:04:57,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:04:58,000 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:58,000 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:04:58,000 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126808403] [2021-06-05 08:04:58,000 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126808403] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:58,000 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1520514796] [2021-06-05 08:04:58,000 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 369 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 369 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:04:58,064 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2021-06-05 08:04:58,064 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:04:58,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 33 conjunts are in the unsatisfiable core [2021-06-05 08:04:58,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:04:58,235 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:58,236 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1520514796] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:58,236 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:04:58,236 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2021-06-05 08:04:58,236 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934662698] [2021-06-05 08:04:58,236 INFO L462 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-06-05 08:04:58,236 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:04:58,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-06-05 08:04:58,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=818, Unknown=0, NotChecked=0, Total=992 [2021-06-05 08:04:58,237 INFO L87 Difference]: Start difference. First operand 4863 states and 13678 transitions. Second operand has 32 states, 32 states have (on average 5.15625) internal successors, (165), 32 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:59,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:04:59,171 INFO L93 Difference]: Finished difference Result 6331 states and 16817 transitions. [2021-06-05 08:04:59,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-06-05 08:04:59,171 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.15625) internal successors, (165), 32 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 165 [2021-06-05 08:04:59,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:04:59,177 INFO L225 Difference]: With dead ends: 6331 [2021-06-05 08:04:59,177 INFO L226 Difference]: Without dead ends: 6061 [2021-06-05 08:04:59,178 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1854 ImplicationChecksByTransitivity, 961.6ms TimeCoverageRelationStatistics Valid=1803, Invalid=5003, Unknown=0, NotChecked=0, Total=6806 [2021-06-05 08:04:59,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6061 states. [2021-06-05 08:04:59,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6061 to 4938. [2021-06-05 08:04:59,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4938 states, 4937 states have (on average 2.8160826412801296) internal successors, (13903), 4937 states have internal predecessors, (13903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:59,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4938 states to 4938 states and 13903 transitions. [2021-06-05 08:04:59,240 INFO L78 Accepts]: Start accepts. Automaton has 4938 states and 13903 transitions. Word has length 165 [2021-06-05 08:04:59,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:04:59,241 INFO L482 AbstractCegarLoop]: Abstraction has 4938 states and 13903 transitions. [2021-06-05 08:04:59,241 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 5.15625) internal successors, (165), 32 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:59,241 INFO L276 IsEmpty]: Start isEmpty. Operand 4938 states and 13903 transitions. [2021-06-05 08:04:59,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-06-05 08:04:59,245 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:04:59,245 INFO L521 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:04:59,445 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable373,369 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:04:59,445 INFO L430 AbstractCegarLoop]: === Iteration 375 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:04:59,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:04:59,446 INFO L82 PathProgramCache]: Analyzing trace with hash 1659346591, now seen corresponding path program 366 times [2021-06-05 08:04:59,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:04:59,446 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211787307] [2021-06-05 08:04:59,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:04:59,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:04:59,718 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:59,718 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:04:59,718 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211787307] [2021-06-05 08:04:59,718 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211787307] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:59,718 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1942440129] [2021-06-05 08:04:59,718 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 370 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 370 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:04:59,791 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2021-06-05 08:04:59,791 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:04:59,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 33 conjunts are in the unsatisfiable core [2021-06-05 08:04:59,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:04:59,978 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:59,978 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1942440129] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:59,978 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:04:59,978 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 33 [2021-06-05 08:04:59,978 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153274478] [2021-06-05 08:04:59,978 INFO L462 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-06-05 08:04:59,978 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:04:59,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-06-05 08:04:59,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=882, Unknown=0, NotChecked=0, Total=1056 [2021-06-05 08:04:59,979 INFO L87 Difference]: Start difference. First operand 4938 states and 13903 transitions. Second operand has 33 states, 33 states have (on average 5.0606060606060606) internal successors, (167), 33 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:01,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:05:01,130 INFO L93 Difference]: Finished difference Result 6356 states and 16942 transitions. [2021-06-05 08:05:01,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-06-05 08:05:01,130 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 5.0606060606060606) internal successors, (167), 33 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 165 [2021-06-05 08:05:01,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:05:01,135 INFO L225 Difference]: With dead ends: 6356 [2021-06-05 08:05:01,135 INFO L226 Difference]: Without dead ends: 6086 [2021-06-05 08:05:01,136 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1899 ImplicationChecksByTransitivity, 1123.5ms TimeCoverageRelationStatistics Valid=1841, Invalid=5299, Unknown=0, NotChecked=0, Total=7140 [2021-06-05 08:05:01,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6086 states. [2021-06-05 08:05:01,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6086 to 5013. [2021-06-05 08:05:01,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5013 states, 5012 states have (on average 2.818834796488428) internal successors, (14128), 5012 states have internal predecessors, (14128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:01,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5013 states to 5013 states and 14128 transitions. [2021-06-05 08:05:01,190 INFO L78 Accepts]: Start accepts. Automaton has 5013 states and 14128 transitions. Word has length 165 [2021-06-05 08:05:01,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:05:01,190 INFO L482 AbstractCegarLoop]: Abstraction has 5013 states and 14128 transitions. [2021-06-05 08:05:01,190 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 5.0606060606060606) internal successors, (167), 33 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:01,190 INFO L276 IsEmpty]: Start isEmpty. Operand 5013 states and 14128 transitions. [2021-06-05 08:05:01,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-06-05 08:05:01,193 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:05:01,194 INFO L521 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:05:01,394 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable374,370 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:05:01,394 INFO L430 AbstractCegarLoop]: === Iteration 376 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:05:01,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:05:01,394 INFO L82 PathProgramCache]: Analyzing trace with hash -219981299, now seen corresponding path program 367 times [2021-06-05 08:05:01,394 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:05:01,394 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280428036] [2021-06-05 08:05:01,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:05:01,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:05:01,661 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:05:01,661 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:05:01,661 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280428036] [2021-06-05 08:05:01,662 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280428036] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:05:01,662 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1057429895] [2021-06-05 08:05:01,662 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 371 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 371 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:05:01,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:05:01,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 33 conjunts are in the unsatisfiable core [2021-06-05 08:05:01,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:05:01,893 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:05:01,893 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1057429895] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:05:01,893 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:05:01,893 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2021-06-05 08:05:01,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517529615] [2021-06-05 08:05:01,894 INFO L462 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-06-05 08:05:01,894 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:05:01,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-06-05 08:05:01,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=803, Unknown=0, NotChecked=0, Total=992 [2021-06-05 08:05:01,894 INFO L87 Difference]: Start difference. First operand 5013 states and 14128 transitions. Second operand has 32 states, 32 states have (on average 5.15625) internal successors, (165), 32 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:02,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:05:02,877 INFO L93 Difference]: Finished difference Result 6381 states and 17067 transitions. [2021-06-05 08:05:02,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-06-05 08:05:02,877 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.15625) internal successors, (165), 32 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 165 [2021-06-05 08:05:02,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:05:02,884 INFO L225 Difference]: With dead ends: 6381 [2021-06-05 08:05:02,884 INFO L226 Difference]: Without dead ends: 6111 [2021-06-05 08:05:02,885 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1989 ImplicationChecksByTransitivity, 967.4ms TimeCoverageRelationStatistics Valid=1959, Invalid=5181, Unknown=0, NotChecked=0, Total=7140 [2021-06-05 08:05:02,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6111 states. [2021-06-05 08:05:02,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6111 to 5088. [2021-06-05 08:05:02,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5088 states, 5087 states have (on average 2.821505799095734) internal successors, (14353), 5087 states have internal predecessors, (14353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:02,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5088 states to 5088 states and 14353 transitions. [2021-06-05 08:05:02,948 INFO L78 Accepts]: Start accepts. Automaton has 5088 states and 14353 transitions. Word has length 165 [2021-06-05 08:05:02,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:05:02,948 INFO L482 AbstractCegarLoop]: Abstraction has 5088 states and 14353 transitions. [2021-06-05 08:05:02,948 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 5.15625) internal successors, (165), 32 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:02,948 INFO L276 IsEmpty]: Start isEmpty. Operand 5088 states and 14353 transitions. [2021-06-05 08:05:02,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-06-05 08:05:02,952 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:05:02,952 INFO L521 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:05:03,153 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 371 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable375 [2021-06-05 08:05:03,153 INFO L430 AbstractCegarLoop]: === Iteration 377 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:05:03,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:05:03,153 INFO L82 PathProgramCache]: Analyzing trace with hash 1810338013, now seen corresponding path program 368 times [2021-06-05 08:05:03,153 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:05:03,153 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140631253] [2021-06-05 08:05:03,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:05:03,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:05:03,455 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:05:03,455 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:05:03,455 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140631253] [2021-06-05 08:05:03,455 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140631253] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:05:03,455 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2038493359] [2021-06-05 08:05:03,455 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 372 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 372 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:05:03,521 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 08:05:03,521 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:05:03,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 33 conjunts are in the unsatisfiable core [2021-06-05 08:05:03,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:05:03,707 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:05:03,707 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2038493359] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:05:03,707 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:05:03,707 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 33 [2021-06-05 08:05:03,707 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655341506] [2021-06-05 08:05:03,708 INFO L462 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-06-05 08:05:03,708 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:05:03,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-06-05 08:05:03,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=866, Unknown=0, NotChecked=0, Total=1056 [2021-06-05 08:05:03,708 INFO L87 Difference]: Start difference. First operand 5088 states and 14353 transitions. Second operand has 33 states, 33 states have (on average 5.0606060606060606) internal successors, (167), 33 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:04,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:05:04,909 INFO L93 Difference]: Finished difference Result 6406 states and 17192 transitions. [2021-06-05 08:05:04,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-06-05 08:05:04,909 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 5.0606060606060606) internal successors, (167), 33 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 165 [2021-06-05 08:05:04,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:05:04,915 INFO L225 Difference]: With dead ends: 6406 [2021-06-05 08:05:04,915 INFO L226 Difference]: Without dead ends: 6136 [2021-06-05 08:05:04,916 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2037 ImplicationChecksByTransitivity, 1207.6ms TimeCoverageRelationStatistics Valid=1999, Invalid=5483, Unknown=0, NotChecked=0, Total=7482 [2021-06-05 08:05:04,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6136 states. [2021-06-05 08:05:04,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6136 to 5163. [2021-06-05 08:05:04,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5163 states, 5162 states have (on average 2.824099186361875) internal successors, (14578), 5162 states have internal predecessors, (14578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:04,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5163 states to 5163 states and 14578 transitions. [2021-06-05 08:05:04,980 INFO L78 Accepts]: Start accepts. Automaton has 5163 states and 14578 transitions. Word has length 165 [2021-06-05 08:05:04,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:05:04,980 INFO L482 AbstractCegarLoop]: Abstraction has 5163 states and 14578 transitions. [2021-06-05 08:05:04,981 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 5.0606060606060606) internal successors, (167), 33 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:04,981 INFO L276 IsEmpty]: Start isEmpty. Operand 5163 states and 14578 transitions. [2021-06-05 08:05:04,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-06-05 08:05:04,984 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:05:04,985 INFO L521 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:05:05,185 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 372 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable376 [2021-06-05 08:05:05,185 INFO L430 AbstractCegarLoop]: === Iteration 378 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:05:05,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:05:05,185 INFO L82 PathProgramCache]: Analyzing trace with hash -1870389813, now seen corresponding path program 369 times [2021-06-05 08:05:05,185 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:05:05,185 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002890558] [2021-06-05 08:05:05,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:05:05,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:05:05,459 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:05:05,459 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:05:05,459 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002890558] [2021-06-05 08:05:05,459 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002890558] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:05:05,459 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [632203636] [2021-06-05 08:05:05,459 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 373 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 373 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:05:05,535 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2021-06-05 08:05:05,535 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:05:05,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 33 conjunts are in the unsatisfiable core [2021-06-05 08:05:05,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:05:05,704 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:05:05,704 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [632203636] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:05:05,704 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:05:05,705 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2021-06-05 08:05:05,705 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218544996] [2021-06-05 08:05:05,705 INFO L462 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-06-05 08:05:05,705 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:05:05,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-06-05 08:05:05,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=784, Unknown=0, NotChecked=0, Total=992 [2021-06-05 08:05:05,705 INFO L87 Difference]: Start difference. First operand 5163 states and 14578 transitions. Second operand has 32 states, 32 states have (on average 5.15625) internal successors, (165), 32 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:06,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:05:06,768 INFO L93 Difference]: Finished difference Result 6431 states and 17317 transitions. [2021-06-05 08:05:06,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-06-05 08:05:06,768 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.15625) internal successors, (165), 32 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 165 [2021-06-05 08:05:06,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:05:06,774 INFO L225 Difference]: With dead ends: 6431 [2021-06-05 08:05:06,774 INFO L226 Difference]: Without dead ends: 6161 [2021-06-05 08:05:06,775 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2128 ImplicationChecksByTransitivity, 1019.8ms TimeCoverageRelationStatistics Valid=2131, Invalid=5351, Unknown=0, NotChecked=0, Total=7482 [2021-06-05 08:05:06,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6161 states. [2021-06-05 08:05:06,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6161 to 5238. [2021-06-05 08:05:06,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5238 states, 5237 states have (on average 2.8266182929157915) internal successors, (14803), 5237 states have internal predecessors, (14803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:06,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5238 states to 5238 states and 14803 transitions. [2021-06-05 08:05:06,841 INFO L78 Accepts]: Start accepts. Automaton has 5238 states and 14803 transitions. Word has length 165 [2021-06-05 08:05:06,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:05:06,841 INFO L482 AbstractCegarLoop]: Abstraction has 5238 states and 14803 transitions. [2021-06-05 08:05:06,842 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 5.15625) internal successors, (165), 32 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:06,842 INFO L276 IsEmpty]: Start isEmpty. Operand 5238 states and 14803 transitions. [2021-06-05 08:05:06,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-06-05 08:05:06,846 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:05:06,846 INFO L521 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:05:07,046 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 373 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable377 [2021-06-05 08:05:07,047 INFO L430 AbstractCegarLoop]: === Iteration 379 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:05:07,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:05:07,047 INFO L82 PathProgramCache]: Analyzing trace with hash 709335195, now seen corresponding path program 370 times [2021-06-05 08:05:07,047 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:05:07,047 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535455211] [2021-06-05 08:05:07,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:05:07,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:05:07,316 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:05:07,316 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:05:07,316 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535455211] [2021-06-05 08:05:07,316 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535455211] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:05:07,316 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1553426191] [2021-06-05 08:05:07,316 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 374 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 374 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:05:07,379 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 08:05:07,379 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:05:07,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 33 conjunts are in the unsatisfiable core [2021-06-05 08:05:07,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:05:07,564 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:05:07,564 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1553426191] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:05:07,564 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:05:07,564 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 33 [2021-06-05 08:05:07,564 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305300318] [2021-06-05 08:05:07,564 INFO L462 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-06-05 08:05:07,564 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:05:07,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-06-05 08:05:07,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=846, Unknown=0, NotChecked=0, Total=1056 [2021-06-05 08:05:07,565 INFO L87 Difference]: Start difference. First operand 5238 states and 14803 transitions. Second operand has 33 states, 33 states have (on average 5.0606060606060606) internal successors, (167), 33 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:08,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:05:08,847 INFO L93 Difference]: Finished difference Result 6516 states and 17607 transitions. [2021-06-05 08:05:08,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-06-05 08:05:08,847 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 5.0606060606060606) internal successors, (167), 33 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 165 [2021-06-05 08:05:08,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:05:08,854 INFO L225 Difference]: With dead ends: 6516 [2021-06-05 08:05:08,854 INFO L226 Difference]: Without dead ends: 6246 [2021-06-05 08:05:08,854 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2179 ImplicationChecksByTransitivity, 1229.7ms TimeCoverageRelationStatistics Valid=2173, Invalid=5659, Unknown=0, NotChecked=0, Total=7832 [2021-06-05 08:05:08,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6246 states. [2021-06-05 08:05:08,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6246 to 5313. [2021-06-05 08:05:08,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5313 states, 5312 states have (on average 2.8328313253012047) internal successors, (15048), 5312 states have internal predecessors, (15048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:08,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5313 states to 5313 states and 15048 transitions. [2021-06-05 08:05:08,915 INFO L78 Accepts]: Start accepts. Automaton has 5313 states and 15048 transitions. Word has length 165 [2021-06-05 08:05:08,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:05:08,915 INFO L482 AbstractCegarLoop]: Abstraction has 5313 states and 15048 transitions. [2021-06-05 08:05:08,915 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 5.0606060606060606) internal successors, (167), 33 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:08,915 INFO L276 IsEmpty]: Start isEmpty. Operand 5313 states and 15048 transitions. [2021-06-05 08:05:08,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-06-05 08:05:08,919 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:05:08,919 INFO L521 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:05:09,120 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 374 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable378 [2021-06-05 08:05:09,120 INFO L430 AbstractCegarLoop]: === Iteration 380 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:05:09,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:05:09,124 INFO L82 PathProgramCache]: Analyzing trace with hash -323312407, now seen corresponding path program 371 times [2021-06-05 08:05:09,125 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:05:09,125 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103917601] [2021-06-05 08:05:09,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:05:09,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:05:09,435 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:05:09,435 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:05:09,435 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103917601] [2021-06-05 08:05:09,435 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103917601] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:05:09,435 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [574689066] [2021-06-05 08:05:09,435 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 375 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 375 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:05:09,506 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2021-06-05 08:05:09,506 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:05:09,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 33 conjunts are in the unsatisfiable core [2021-06-05 08:05:09,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:05:09,675 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:05:09,675 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [574689066] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:05:09,675 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:05:09,676 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2021-06-05 08:05:09,676 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002535466] [2021-06-05 08:05:09,676 INFO L462 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-06-05 08:05:09,676 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:05:09,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-06-05 08:05:09,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=761, Unknown=0, NotChecked=0, Total=992 [2021-06-05 08:05:09,676 INFO L87 Difference]: Start difference. First operand 5313 states and 15048 transitions. Second operand has 32 states, 32 states have (on average 5.15625) internal successors, (165), 32 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:10,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:05:10,744 INFO L93 Difference]: Finished difference Result 7258 states and 19731 transitions. [2021-06-05 08:05:10,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-06-05 08:05:10,744 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.15625) internal successors, (165), 32 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 165 [2021-06-05 08:05:10,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:05:10,751 INFO L225 Difference]: With dead ends: 7258 [2021-06-05 08:05:10,752 INFO L226 Difference]: Without dead ends: 6988 [2021-06-05 08:05:10,752 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2270 ImplicationChecksByTransitivity, 1043.7ms TimeCoverageRelationStatistics Valid=2320, Invalid=5512, Unknown=0, NotChecked=0, Total=7832 [2021-06-05 08:05:10,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6988 states. [2021-06-05 08:05:10,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6988 to 5493. [2021-06-05 08:05:10,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5493 states, 5492 states have (on average 2.841769847050255) internal successors, (15607), 5492 states have internal predecessors, (15607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:10,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5493 states to 5493 states and 15607 transitions. [2021-06-05 08:05:10,815 INFO L78 Accepts]: Start accepts. Automaton has 5493 states and 15607 transitions. Word has length 165 [2021-06-05 08:05:10,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:05:10,815 INFO L482 AbstractCegarLoop]: Abstraction has 5493 states and 15607 transitions. [2021-06-05 08:05:10,815 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 5.15625) internal successors, (165), 32 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:10,816 INFO L276 IsEmpty]: Start isEmpty. Operand 5493 states and 15607 transitions. [2021-06-05 08:05:10,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-06-05 08:05:10,820 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:05:10,820 INFO L521 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:05:11,020 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable379,375 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:05:11,020 INFO L430 AbstractCegarLoop]: === Iteration 381 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:05:11,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:05:11,020 INFO L82 PathProgramCache]: Analyzing trace with hash -300969157, now seen corresponding path program 372 times [2021-06-05 08:05:11,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:05:11,021 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512562538] [2021-06-05 08:05:11,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:05:11,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:05:11,288 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:05:11,288 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:05:11,288 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512562538] [2021-06-05 08:05:11,289 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512562538] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:05:11,289 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1610720316] [2021-06-05 08:05:11,289 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 376 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 376 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:05:11,362 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2021-06-05 08:05:11,362 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:05:11,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 33 conjunts are in the unsatisfiable core [2021-06-05 08:05:11,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:05:11,544 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:05:11,545 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1610720316] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:05:11,545 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:05:11,545 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 33 [2021-06-05 08:05:11,545 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041280390] [2021-06-05 08:05:11,545 INFO L462 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-06-05 08:05:11,545 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:05:11,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-06-05 08:05:11,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=234, Invalid=822, Unknown=0, NotChecked=0, Total=1056 [2021-06-05 08:05:11,545 INFO L87 Difference]: Start difference. First operand 5493 states and 15607 transitions. Second operand has 33 states, 33 states have (on average 5.0606060606060606) internal successors, (167), 33 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:12,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:05:12,824 INFO L93 Difference]: Finished difference Result 6720 states and 18381 transitions. [2021-06-05 08:05:12,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-06-05 08:05:12,825 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 5.0606060606060606) internal successors, (167), 33 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 165 [2021-06-05 08:05:12,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:05:12,831 INFO L225 Difference]: With dead ends: 6720 [2021-06-05 08:05:12,832 INFO L226 Difference]: Without dead ends: 6231 [2021-06-05 08:05:12,832 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2325 ImplicationChecksByTransitivity, 1267.3ms TimeCoverageRelationStatistics Valid=2366, Invalid=5824, Unknown=0, NotChecked=0, Total=8190 [2021-06-05 08:05:12,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6231 states. [2021-06-05 08:05:12,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6231 to 3434. [2021-06-05 08:05:12,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3434 states, 3433 states have (on average 2.7427905621905038) internal successors, (9416), 3433 states have internal predecessors, (9416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:12,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3434 states to 3434 states and 9416 transitions. [2021-06-05 08:05:12,882 INFO L78 Accepts]: Start accepts. Automaton has 3434 states and 9416 transitions. Word has length 165 [2021-06-05 08:05:12,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:05:12,882 INFO L482 AbstractCegarLoop]: Abstraction has 3434 states and 9416 transitions. [2021-06-05 08:05:12,882 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 5.0606060606060606) internal successors, (167), 33 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:12,882 INFO L276 IsEmpty]: Start isEmpty. Operand 3434 states and 9416 transitions. [2021-06-05 08:05:12,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-06-05 08:05:12,885 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:05:12,885 INFO L521 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:05:13,085 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 376 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable380 [2021-06-05 08:05:13,086 INFO L430 AbstractCegarLoop]: === Iteration 382 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:05:13,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:05:13,086 INFO L82 PathProgramCache]: Analyzing trace with hash 33638321, now seen corresponding path program 373 times [2021-06-05 08:05:13,086 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:05:13,086 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753362875] [2021-06-05 08:05:13,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:05:13,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:05:13,424 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:05:13,424 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:05:13,424 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753362875] [2021-06-05 08:05:13,424 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753362875] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:05:13,424 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [203541240] [2021-06-05 08:05:13,424 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 377 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 377 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:05:13,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:05:13,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 35 conjunts are in the unsatisfiable core [2021-06-05 08:05:13,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:05:13,716 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:05:13,716 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [203541240] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:05:13,717 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:05:13,717 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 36 [2021-06-05 08:05:13,717 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694262245] [2021-06-05 08:05:13,717 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-06-05 08:05:13,717 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:05:13,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-06-05 08:05:13,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=284, Invalid=976, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 08:05:13,717 INFO L87 Difference]: Start difference. First operand 3434 states and 9416 transitions. Second operand has 36 states, 36 states have (on average 5.5) internal successors, (198), 36 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:14,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:05:14,420 INFO L93 Difference]: Finished difference Result 4774 states and 12416 transitions. [2021-06-05 08:05:14,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-06-05 08:05:14,421 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 5.5) internal successors, (198), 36 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 170 [2021-06-05 08:05:14,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:05:14,425 INFO L225 Difference]: With dead ends: 4774 [2021-06-05 08:05:14,425 INFO L226 Difference]: Without dead ends: 4440 [2021-06-05 08:05:14,426 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 991 ImplicationChecksByTransitivity, 828.5ms TimeCoverageRelationStatistics Valid=1320, Invalid=3510, Unknown=0, NotChecked=0, Total=4830 [2021-06-05 08:05:14,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4440 states. [2021-06-05 08:05:14,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4440 to 3519. [2021-06-05 08:05:14,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3519 states, 3518 states have (on average 2.72484366117112) internal successors, (9586), 3518 states have internal predecessors, (9586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:14,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3519 states to 3519 states and 9586 transitions. [2021-06-05 08:05:14,460 INFO L78 Accepts]: Start accepts. Automaton has 3519 states and 9586 transitions. Word has length 170 [2021-06-05 08:05:14,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:05:14,460 INFO L482 AbstractCegarLoop]: Abstraction has 3519 states and 9586 transitions. [2021-06-05 08:05:14,460 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 5.5) internal successors, (198), 36 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:14,460 INFO L276 IsEmpty]: Start isEmpty. Operand 3519 states and 9586 transitions. [2021-06-05 08:05:14,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-06-05 08:05:14,463 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:05:14,463 INFO L521 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:05:14,664 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable381,377 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:05:14,665 INFO L430 AbstractCegarLoop]: === Iteration 383 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:05:14,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:05:14,665 INFO L82 PathProgramCache]: Analyzing trace with hash 117467253, now seen corresponding path program 374 times [2021-06-05 08:05:14,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:05:14,665 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083697805] [2021-06-05 08:05:14,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:05:14,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:05:15,035 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:05:15,035 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:05:15,035 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083697805] [2021-06-05 08:05:15,035 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083697805] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:05:15,035 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [63879940] [2021-06-05 08:05:15,035 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 378 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 378 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:05:15,098 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 08:05:15,099 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:05:15,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 34 conjunts are in the unsatisfiable core [2021-06-05 08:05:15,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:05:15,293 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:05:15,293 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [63879940] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:05:15,293 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:05:15,293 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2021-06-05 08:05:15,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163688266] [2021-06-05 08:05:15,293 INFO L462 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-06-05 08:05:15,293 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:05:15,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-06-05 08:05:15,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=246, Invalid=810, Unknown=0, NotChecked=0, Total=1056 [2021-06-05 08:05:15,294 INFO L87 Difference]: Start difference. First operand 3519 states and 9586 transitions. Second operand has 33 states, 33 states have (on average 5.151515151515151) internal successors, (170), 33 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:15,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:05:15,868 INFO L93 Difference]: Finished difference Result 6096 states and 14997 transitions. [2021-06-05 08:05:15,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-06-05 08:05:15,869 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 5.151515151515151) internal successors, (170), 33 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 170 [2021-06-05 08:05:15,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:05:15,875 INFO L225 Difference]: With dead ends: 6096 [2021-06-05 08:05:15,875 INFO L226 Difference]: Without dead ends: 5826 [2021-06-05 08:05:15,876 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 714 ImplicationChecksByTransitivity, 751.3ms TimeCoverageRelationStatistics Valid=1132, Invalid=2900, Unknown=0, NotChecked=0, Total=4032 [2021-06-05 08:05:15,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5826 states. [2021-06-05 08:05:15,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5826 to 3663. [2021-06-05 08:05:15,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3663 states, 3662 states have (on average 2.7315674494811577) internal successors, (10003), 3662 states have internal predecessors, (10003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:15,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3663 states to 3663 states and 10003 transitions. [2021-06-05 08:05:15,918 INFO L78 Accepts]: Start accepts. Automaton has 3663 states and 10003 transitions. Word has length 170 [2021-06-05 08:05:15,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:05:15,918 INFO L482 AbstractCegarLoop]: Abstraction has 3663 states and 10003 transitions. [2021-06-05 08:05:15,918 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 5.151515151515151) internal successors, (170), 33 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:15,918 INFO L276 IsEmpty]: Start isEmpty. Operand 3663 states and 10003 transitions. [2021-06-05 08:05:15,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-06-05 08:05:15,922 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:05:15,922 INFO L521 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:05:16,122 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable382,378 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:05:16,123 INFO L430 AbstractCegarLoop]: === Iteration 384 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:05:16,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:05:16,123 INFO L82 PathProgramCache]: Analyzing trace with hash 815182661, now seen corresponding path program 375 times [2021-06-05 08:05:16,123 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:05:16,123 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007487405] [2021-06-05 08:05:16,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:05:16,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:05:16,499 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:05:16,499 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:05:16,499 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007487405] [2021-06-05 08:05:16,500 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007487405] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:05:16,500 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1650404464] [2021-06-05 08:05:16,500 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 379 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 379 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:05:16,577 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2021-06-05 08:05:16,577 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:05:16,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 34 conjunts are in the unsatisfiable core [2021-06-05 08:05:16,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:05:16,794 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:05:16,794 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1650404464] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:05:16,794 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:05:16,794 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 34 [2021-06-05 08:05:16,794 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574935980] [2021-06-05 08:05:16,795 INFO L462 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-06-05 08:05:16,795 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:05:16,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-06-05 08:05:16,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=236, Invalid=886, Unknown=0, NotChecked=0, Total=1122 [2021-06-05 08:05:16,795 INFO L87 Difference]: Start difference. First operand 3663 states and 10003 transitions. Second operand has 34 states, 34 states have (on average 5.0588235294117645) internal successors, (172), 34 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:17,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:05:17,453 INFO L93 Difference]: Finished difference Result 6056 states and 14992 transitions. [2021-06-05 08:05:17,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-06-05 08:05:17,453 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 5.0588235294117645) internal successors, (172), 34 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 170 [2021-06-05 08:05:17,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:05:17,459 INFO L225 Difference]: With dead ends: 6056 [2021-06-05 08:05:17,459 INFO L226 Difference]: Without dead ends: 5786 [2021-06-05 08:05:17,460 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 817 ImplicationChecksByTransitivity, 827.4ms TimeCoverageRelationStatistics Valid=1215, Invalid=3341, Unknown=0, NotChecked=0, Total=4556 [2021-06-05 08:05:17,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5786 states. [2021-06-05 08:05:17,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5786 to 3738. [2021-06-05 08:05:17,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3738 states, 3737 states have (on average 2.7369547765587368) internal successors, (10228), 3737 states have internal predecessors, (10228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:17,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3738 states to 3738 states and 10228 transitions. [2021-06-05 08:05:17,506 INFO L78 Accepts]: Start accepts. Automaton has 3738 states and 10228 transitions. Word has length 170 [2021-06-05 08:05:17,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:05:17,506 INFO L482 AbstractCegarLoop]: Abstraction has 3738 states and 10228 transitions. [2021-06-05 08:05:17,506 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 5.0588235294117645) internal successors, (172), 34 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:17,506 INFO L276 IsEmpty]: Start isEmpty. Operand 3738 states and 10228 transitions. [2021-06-05 08:05:17,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-06-05 08:05:17,530 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:05:17,530 INFO L521 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:05:17,730 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable383,379 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:05:17,731 INFO L430 AbstractCegarLoop]: === Iteration 385 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:05:17,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:05:17,731 INFO L82 PathProgramCache]: Analyzing trace with hash -904699981, now seen corresponding path program 376 times [2021-06-05 08:05:17,731 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:05:17,731 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443034622] [2021-06-05 08:05:17,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:05:17,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:05:18,070 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:05:18,071 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:05:18,071 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443034622] [2021-06-05 08:05:18,071 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443034622] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:05:18,071 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1961859620] [2021-06-05 08:05:18,071 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 380 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 380 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:05:18,134 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 08:05:18,134 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:05:18,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 34 conjunts are in the unsatisfiable core [2021-06-05 08:05:18,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:05:18,327 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:05:18,327 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1961859620] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:05:18,327 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:05:18,327 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2021-06-05 08:05:18,328 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842612983] [2021-06-05 08:05:18,328 INFO L462 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-06-05 08:05:18,328 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:05:18,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-06-05 08:05:18,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=834, Unknown=0, NotChecked=0, Total=1056 [2021-06-05 08:05:18,328 INFO L87 Difference]: Start difference. First operand 3738 states and 10228 transitions. Second operand has 33 states, 33 states have (on average 5.151515151515151) internal successors, (170), 33 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:18,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:05:18,964 INFO L93 Difference]: Finished difference Result 6106 states and 15167 transitions. [2021-06-05 08:05:18,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-05 08:05:18,964 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 5.151515151515151) internal successors, (170), 33 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 170 [2021-06-05 08:05:18,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:05:18,970 INFO L225 Difference]: With dead ends: 6106 [2021-06-05 08:05:18,970 INFO L226 Difference]: Without dead ends: 5836 [2021-06-05 08:05:18,971 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 802 ImplicationChecksByTransitivity, 773.6ms TimeCoverageRelationStatistics Valid=1129, Invalid=3161, Unknown=0, NotChecked=0, Total=4290 [2021-06-05 08:05:18,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5836 states. [2021-06-05 08:05:19,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5836 to 3813. [2021-06-05 08:05:19,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3813 states, 3812 states have (on average 2.742130115424974) internal successors, (10453), 3812 states have internal predecessors, (10453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:19,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3813 states to 3813 states and 10453 transitions. [2021-06-05 08:05:19,013 INFO L78 Accepts]: Start accepts. Automaton has 3813 states and 10453 transitions. Word has length 170 [2021-06-05 08:05:19,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:05:19,013 INFO L482 AbstractCegarLoop]: Abstraction has 3813 states and 10453 transitions. [2021-06-05 08:05:19,013 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 5.151515151515151) internal successors, (170), 33 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:19,013 INFO L276 IsEmpty]: Start isEmpty. Operand 3813 states and 10453 transitions. [2021-06-05 08:05:19,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-06-05 08:05:19,016 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:05:19,016 INFO L521 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:05:19,217 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable384,380 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:05:19,217 INFO L430 AbstractCegarLoop]: === Iteration 386 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:05:19,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:05:19,217 INFO L82 PathProgramCache]: Analyzing trace with hash -1406013821, now seen corresponding path program 377 times [2021-06-05 08:05:19,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:05:19,217 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663488204] [2021-06-05 08:05:19,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:05:19,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:05:19,569 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:05:19,569 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:05:19,569 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663488204] [2021-06-05 08:05:19,569 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663488204] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:05:19,569 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [189825067] [2021-06-05 08:05:19,569 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 381 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 381 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:05:19,636 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2021-06-05 08:05:19,637 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:05:19,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 34 conjunts are in the unsatisfiable core [2021-06-05 08:05:19,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:05:19,852 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:05:19,852 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [189825067] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:05:19,853 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:05:19,853 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 34 [2021-06-05 08:05:19,853 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201788418] [2021-06-05 08:05:19,853 INFO L462 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-06-05 08:05:19,853 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:05:19,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-06-05 08:05:19,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=909, Unknown=0, NotChecked=0, Total=1122 [2021-06-05 08:05:19,853 INFO L87 Difference]: Start difference. First operand 3813 states and 10453 transitions. Second operand has 34 states, 34 states have (on average 5.0588235294117645) internal successors, (172), 34 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:20,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:05:20,579 INFO L93 Difference]: Finished difference Result 6131 states and 15292 transitions. [2021-06-05 08:05:20,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-05 08:05:20,579 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 5.0588235294117645) internal successors, (172), 34 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 170 [2021-06-05 08:05:20,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:05:20,584 INFO L225 Difference]: With dead ends: 6131 [2021-06-05 08:05:20,584 INFO L226 Difference]: Without dead ends: 5861 [2021-06-05 08:05:20,584 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 911 ImplicationChecksByTransitivity, 876.4ms TimeCoverageRelationStatistics Valid=1220, Invalid=3610, Unknown=0, NotChecked=0, Total=4830 [2021-06-05 08:05:20,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5861 states. [2021-06-05 08:05:20,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5861 to 3888. [2021-06-05 08:05:20,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3888 states, 3887 states have (on average 2.7471057370722924) internal successors, (10678), 3887 states have internal predecessors, (10678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:20,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3888 states to 3888 states and 10678 transitions. [2021-06-05 08:05:20,625 INFO L78 Accepts]: Start accepts. Automaton has 3888 states and 10678 transitions. Word has length 170 [2021-06-05 08:05:20,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:05:20,625 INFO L482 AbstractCegarLoop]: Abstraction has 3888 states and 10678 transitions. [2021-06-05 08:05:20,625 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 5.0588235294117645) internal successors, (172), 34 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:20,626 INFO L276 IsEmpty]: Start isEmpty. Operand 3888 states and 10678 transitions. [2021-06-05 08:05:20,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-06-05 08:05:20,628 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:05:20,628 INFO L521 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:05:20,829 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable385,381 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:05:20,829 INFO L430 AbstractCegarLoop]: === Iteration 387 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:05:20,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:05:20,829 INFO L82 PathProgramCache]: Analyzing trace with hash -929518479, now seen corresponding path program 378 times [2021-06-05 08:05:20,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:05:20,829 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274428788] [2021-06-05 08:05:20,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:05:20,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:05:21,154 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:05:21,155 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:05:21,155 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274428788] [2021-06-05 08:05:21,155 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274428788] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:05:21,155 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1948148202] [2021-06-05 08:05:21,155 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 382 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 382 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:05:21,230 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2021-06-05 08:05:21,230 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:05:21,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 34 conjunts are in the unsatisfiable core [2021-06-05 08:05:21,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:05:21,421 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:05:21,422 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1948148202] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:05:21,422 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:05:21,422 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2021-06-05 08:05:21,422 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922169484] [2021-06-05 08:05:21,422 INFO L462 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-06-05 08:05:21,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:05:21,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-06-05 08:05:21,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=854, Unknown=0, NotChecked=0, Total=1056 [2021-06-05 08:05:21,423 INFO L87 Difference]: Start difference. First operand 3888 states and 10678 transitions. Second operand has 33 states, 33 states have (on average 5.151515151515151) internal successors, (170), 33 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:22,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:05:22,097 INFO L93 Difference]: Finished difference Result 6156 states and 15417 transitions. [2021-06-05 08:05:22,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-05 08:05:22,097 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 5.151515151515151) internal successors, (170), 33 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 170 [2021-06-05 08:05:22,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:05:22,102 INFO L225 Difference]: With dead ends: 6156 [2021-06-05 08:05:22,102 INFO L226 Difference]: Without dead ends: 5886 [2021-06-05 08:05:22,103 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 894 ImplicationChecksByTransitivity, 777.2ms TimeCoverageRelationStatistics Valid=1142, Invalid=3414, Unknown=0, NotChecked=0, Total=4556 [2021-06-05 08:05:22,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5886 states. [2021-06-05 08:05:22,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5886 to 3963. [2021-06-05 08:05:22,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3963 states, 3962 states have (on average 2.7518929833417465) internal successors, (10903), 3962 states have internal predecessors, (10903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:22,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3963 states to 3963 states and 10903 transitions. [2021-06-05 08:05:22,149 INFO L78 Accepts]: Start accepts. Automaton has 3963 states and 10903 transitions. Word has length 170 [2021-06-05 08:05:22,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:05:22,149 INFO L482 AbstractCegarLoop]: Abstraction has 3963 states and 10903 transitions. [2021-06-05 08:05:22,149 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 5.151515151515151) internal successors, (170), 33 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:22,149 INFO L276 IsEmpty]: Start isEmpty. Operand 3963 states and 10903 transitions. [2021-06-05 08:05:22,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-06-05 08:05:22,152 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:05:22,152 INFO L521 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:05:22,352 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 382 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable386 [2021-06-05 08:05:22,352 INFO L430 AbstractCegarLoop]: === Iteration 388 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:05:22,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:05:22,353 INFO L82 PathProgramCache]: Analyzing trace with hash 537165633, now seen corresponding path program 379 times [2021-06-05 08:05:22,353 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:05:22,353 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843421755] [2021-06-05 08:05:22,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:05:22,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:05:22,692 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:05:22,692 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:05:22,693 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843421755] [2021-06-05 08:05:22,693 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843421755] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:05:22,693 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [49431140] [2021-06-05 08:05:22,693 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 383 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 383 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:05:22,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:05:22,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 34 conjunts are in the unsatisfiable core [2021-06-05 08:05:22,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:05:22,963 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:05:22,963 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [49431140] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:05:22,964 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:05:22,964 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 34 [2021-06-05 08:05:22,964 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130552840] [2021-06-05 08:05:22,964 INFO L462 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-06-05 08:05:22,964 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:05:22,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-06-05 08:05:22,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=928, Unknown=0, NotChecked=0, Total=1122 [2021-06-05 08:05:22,964 INFO L87 Difference]: Start difference. First operand 3963 states and 10903 transitions. Second operand has 34 states, 34 states have (on average 5.0588235294117645) internal successors, (172), 34 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:23,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:05:23,751 INFO L93 Difference]: Finished difference Result 6181 states and 15542 transitions. [2021-06-05 08:05:23,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-06-05 08:05:23,751 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 5.0588235294117645) internal successors, (172), 34 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 170 [2021-06-05 08:05:23,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:05:23,756 INFO L225 Difference]: With dead ends: 6181 [2021-06-05 08:05:23,756 INFO L226 Difference]: Without dead ends: 5911 [2021-06-05 08:05:23,757 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1010 ImplicationChecksByTransitivity, 897.1ms TimeCoverageRelationStatistics Valid=1241, Invalid=3871, Unknown=0, NotChecked=0, Total=5112 [2021-06-05 08:05:23,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5911 states. [2021-06-05 08:05:23,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5911 to 4038. [2021-06-05 08:05:23,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4038 states, 4037 states have (on average 2.7565023532325985) internal successors, (11128), 4037 states have internal predecessors, (11128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:23,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4038 states to 4038 states and 11128 transitions. [2021-06-05 08:05:23,801 INFO L78 Accepts]: Start accepts. Automaton has 4038 states and 11128 transitions. Word has length 170 [2021-06-05 08:05:23,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:05:23,801 INFO L482 AbstractCegarLoop]: Abstraction has 4038 states and 11128 transitions. [2021-06-05 08:05:23,802 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 5.0588235294117645) internal successors, (172), 34 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:23,802 INFO L276 IsEmpty]: Start isEmpty. Operand 4038 states and 11128 transitions. [2021-06-05 08:05:23,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-06-05 08:05:23,805 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:05:23,805 INFO L521 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:05:24,005 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 383 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable387 [2021-06-05 08:05:24,005 INFO L430 AbstractCegarLoop]: === Iteration 389 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:05:24,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:05:24,006 INFO L82 PathProgramCache]: Analyzing trace with hash 401944239, now seen corresponding path program 380 times [2021-06-05 08:05:24,006 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:05:24,006 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517957633] [2021-06-05 08:05:24,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:05:24,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:05:24,319 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:05:24,319 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:05:24,319 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517957633] [2021-06-05 08:05:24,319 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517957633] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:05:24,319 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1765569940] [2021-06-05 08:05:24,319 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 384 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 384 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:05:24,392 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 08:05:24,392 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:05:24,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 34 conjunts are in the unsatisfiable core [2021-06-05 08:05:24,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:05:24,582 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:05:24,583 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1765569940] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:05:24,583 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:05:24,583 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2021-06-05 08:05:24,583 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870052919] [2021-06-05 08:05:24,583 INFO L462 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-06-05 08:05:24,583 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:05:24,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-06-05 08:05:24,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=870, Unknown=0, NotChecked=0, Total=1056 [2021-06-05 08:05:24,583 INFO L87 Difference]: Start difference. First operand 4038 states and 11128 transitions. Second operand has 33 states, 33 states have (on average 5.151515151515151) internal successors, (170), 33 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:25,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:05:25,310 INFO L93 Difference]: Finished difference Result 6206 states and 15667 transitions. [2021-06-05 08:05:25,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-05 08:05:25,310 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 5.151515151515151) internal successors, (170), 33 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 170 [2021-06-05 08:05:25,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:05:25,316 INFO L225 Difference]: With dead ends: 6206 [2021-06-05 08:05:25,316 INFO L226 Difference]: Without dead ends: 5936 [2021-06-05 08:05:25,317 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 990 ImplicationChecksByTransitivity, 799.1ms TimeCoverageRelationStatistics Valid=1171, Invalid=3659, Unknown=0, NotChecked=0, Total=4830 [2021-06-05 08:05:25,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5936 states. [2021-06-05 08:05:25,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5936 to 4113. [2021-06-05 08:05:25,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4113 states, 4112 states have (on average 2.760943579766537) internal successors, (11353), 4112 states have internal predecessors, (11353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:25,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4113 states to 4113 states and 11353 transitions. [2021-06-05 08:05:25,367 INFO L78 Accepts]: Start accepts. Automaton has 4113 states and 11353 transitions. Word has length 170 [2021-06-05 08:05:25,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:05:25,367 INFO L482 AbstractCegarLoop]: Abstraction has 4113 states and 11353 transitions. [2021-06-05 08:05:25,368 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 5.151515151515151) internal successors, (170), 33 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:25,368 INFO L276 IsEmpty]: Start isEmpty. Operand 4113 states and 11353 transitions. [2021-06-05 08:05:25,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-06-05 08:05:25,371 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:05:25,371 INFO L521 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:05:25,571 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 384 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable388 [2021-06-05 08:05:25,571 INFO L430 AbstractCegarLoop]: === Iteration 390 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:05:25,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:05:25,572 INFO L82 PathProgramCache]: Analyzing trace with hash -474790529, now seen corresponding path program 381 times [2021-06-05 08:05:25,572 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:05:25,572 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202673294] [2021-06-05 08:05:25,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:05:25,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:05:25,901 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:05:25,901 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:05:25,901 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202673294] [2021-06-05 08:05:25,901 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202673294] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:05:25,901 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [919343573] [2021-06-05 08:05:25,901 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 385 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 385 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:05:25,979 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2021-06-05 08:05:25,979 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:05:25,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 34 conjunts are in the unsatisfiable core [2021-06-05 08:05:25,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:05:26,207 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:05:26,207 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [919343573] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:05:26,207 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:05:26,207 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 34 [2021-06-05 08:05:26,207 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761360731] [2021-06-05 08:05:26,208 INFO L462 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-06-05 08:05:26,208 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:05:26,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-06-05 08:05:26,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=943, Unknown=0, NotChecked=0, Total=1122 [2021-06-05 08:05:26,208 INFO L87 Difference]: Start difference. First operand 4113 states and 11353 transitions. Second operand has 34 states, 34 states have (on average 5.0588235294117645) internal successors, (172), 34 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:27,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:05:27,055 INFO L93 Difference]: Finished difference Result 6231 states and 15792 transitions. [2021-06-05 08:05:27,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-06-05 08:05:27,055 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 5.0588235294117645) internal successors, (172), 34 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 170 [2021-06-05 08:05:27,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:05:27,061 INFO L225 Difference]: With dead ends: 6231 [2021-06-05 08:05:27,061 INFO L226 Difference]: Without dead ends: 5961 [2021-06-05 08:05:27,062 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1113 ImplicationChecksByTransitivity, 938.4ms TimeCoverageRelationStatistics Valid=1278, Invalid=4124, Unknown=0, NotChecked=0, Total=5402 [2021-06-05 08:05:27,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5961 states. [2021-06-05 08:05:27,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5961 to 4188. [2021-06-05 08:05:27,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4188 states, 4187 states have (on average 2.7652256985908763) internal successors, (11578), 4187 states have internal predecessors, (11578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:27,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4188 states to 4188 states and 11578 transitions. [2021-06-05 08:05:27,113 INFO L78 Accepts]: Start accepts. Automaton has 4188 states and 11578 transitions. Word has length 170 [2021-06-05 08:05:27,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:05:27,113 INFO L482 AbstractCegarLoop]: Abstraction has 4188 states and 11578 transitions. [2021-06-05 08:05:27,113 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 5.0588235294117645) internal successors, (172), 34 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:27,113 INFO L276 IsEmpty]: Start isEmpty. Operand 4188 states and 11578 transitions. [2021-06-05 08:05:27,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-06-05 08:05:27,117 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:05:27,117 INFO L521 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:05:27,317 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 385 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable389 [2021-06-05 08:05:27,317 INFO L430 AbstractCegarLoop]: === Iteration 391 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:05:27,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:05:27,318 INFO L82 PathProgramCache]: Analyzing trace with hash 2082850413, now seen corresponding path program 382 times [2021-06-05 08:05:27,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:05:27,318 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631166922] [2021-06-05 08:05:27,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:05:27,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:05:27,632 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:05:27,632 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:05:27,632 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631166922] [2021-06-05 08:05:27,632 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631166922] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:05:27,632 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [168001120] [2021-06-05 08:05:27,632 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 386 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 386 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:05:27,695 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 08:05:27,695 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:05:27,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 34 conjunts are in the unsatisfiable core [2021-06-05 08:05:27,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:05:27,878 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:05:27,879 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [168001120] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:05:27,879 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:05:27,879 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2021-06-05 08:05:27,879 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696321145] [2021-06-05 08:05:27,879 INFO L462 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-06-05 08:05:27,879 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:05:27,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-06-05 08:05:27,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=882, Unknown=0, NotChecked=0, Total=1056 [2021-06-05 08:05:27,880 INFO L87 Difference]: Start difference. First operand 4188 states and 11578 transitions. Second operand has 33 states, 33 states have (on average 5.151515151515151) internal successors, (170), 33 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:28,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:05:28,644 INFO L93 Difference]: Finished difference Result 6256 states and 15917 transitions. [2021-06-05 08:05:28,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-05 08:05:28,645 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 5.151515151515151) internal successors, (170), 33 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 170 [2021-06-05 08:05:28,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:05:28,651 INFO L225 Difference]: With dead ends: 6256 [2021-06-05 08:05:28,651 INFO L226 Difference]: Without dead ends: 5986 [2021-06-05 08:05:28,651 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1090 ImplicationChecksByTransitivity, 835.7ms TimeCoverageRelationStatistics Valid=1216, Invalid=3896, Unknown=0, NotChecked=0, Total=5112 [2021-06-05 08:05:28,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5986 states. [2021-06-05 08:05:28,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5986 to 4263. [2021-06-05 08:05:28,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4263 states, 4262 states have (on average 2.7693571093383387) internal successors, (11803), 4262 states have internal predecessors, (11803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:28,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4263 states to 4263 states and 11803 transitions. [2021-06-05 08:05:28,707 INFO L78 Accepts]: Start accepts. Automaton has 4263 states and 11803 transitions. Word has length 170 [2021-06-05 08:05:28,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:05:28,707 INFO L482 AbstractCegarLoop]: Abstraction has 4263 states and 11803 transitions. [2021-06-05 08:05:28,707 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 5.151515151515151) internal successors, (170), 33 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:28,707 INFO L276 IsEmpty]: Start isEmpty. Operand 4263 states and 11803 transitions. [2021-06-05 08:05:28,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-06-05 08:05:28,711 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:05:28,711 INFO L521 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:05:28,911 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable390,386 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:05:28,912 INFO L430 AbstractCegarLoop]: === Iteration 392 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:05:28,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:05:28,912 INFO L82 PathProgramCache]: Analyzing trace with hash -847568579, now seen corresponding path program 383 times [2021-06-05 08:05:28,912 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:05:28,912 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047741909] [2021-06-05 08:05:28,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:05:28,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:05:29,255 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:05:29,255 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:05:29,256 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047741909] [2021-06-05 08:05:29,256 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047741909] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:05:29,256 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1128832182] [2021-06-05 08:05:29,256 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 387 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 387 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:05:29,322 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2021-06-05 08:05:29,322 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:05:29,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 34 conjunts are in the unsatisfiable core [2021-06-05 08:05:29,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:05:29,524 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:05:29,525 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1128832182] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:05:29,525 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:05:29,525 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 34 [2021-06-05 08:05:29,525 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375466667] [2021-06-05 08:05:29,525 INFO L462 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-06-05 08:05:29,525 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:05:29,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-06-05 08:05:29,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=954, Unknown=0, NotChecked=0, Total=1122 [2021-06-05 08:05:29,525 INFO L87 Difference]: Start difference. First operand 4263 states and 11803 transitions. Second operand has 34 states, 34 states have (on average 5.0588235294117645) internal successors, (172), 34 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:30,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:05:30,408 INFO L93 Difference]: Finished difference Result 6281 states and 16042 transitions. [2021-06-05 08:05:30,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-06-05 08:05:30,409 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 5.0588235294117645) internal successors, (172), 34 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 170 [2021-06-05 08:05:30,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:05:30,415 INFO L225 Difference]: With dead ends: 6281 [2021-06-05 08:05:30,415 INFO L226 Difference]: Without dead ends: 6011 [2021-06-05 08:05:30,415 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1220 ImplicationChecksByTransitivity, 969.1ms TimeCoverageRelationStatistics Valid=1331, Invalid=4369, Unknown=0, NotChecked=0, Total=5700 [2021-06-05 08:05:30,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6011 states. [2021-06-05 08:05:30,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6011 to 4338. [2021-06-05 08:05:30,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4338 states, 4337 states have (on average 2.7733456306202444) internal successors, (12028), 4337 states have internal predecessors, (12028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:30,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4338 states to 4338 states and 12028 transitions. [2021-06-05 08:05:30,469 INFO L78 Accepts]: Start accepts. Automaton has 4338 states and 12028 transitions. Word has length 170 [2021-06-05 08:05:30,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:05:30,469 INFO L482 AbstractCegarLoop]: Abstraction has 4338 states and 12028 transitions. [2021-06-05 08:05:30,469 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 5.0588235294117645) internal successors, (172), 34 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:30,469 INFO L276 IsEmpty]: Start isEmpty. Operand 4338 states and 12028 transitions. [2021-06-05 08:05:30,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-06-05 08:05:30,472 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:05:30,472 INFO L521 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:05:30,673 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable391,387 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:05:30,673 INFO L430 AbstractCegarLoop]: === Iteration 393 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:05:30,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:05:30,673 INFO L82 PathProgramCache]: Analyzing trace with hash 1170166699, now seen corresponding path program 384 times [2021-06-05 08:05:30,673 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:05:30,673 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545122243] [2021-06-05 08:05:30,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:05:30,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:05:30,973 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:05:30,974 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:05:30,974 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545122243] [2021-06-05 08:05:30,974 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545122243] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:05:30,974 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1769814421] [2021-06-05 08:05:30,974 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 388 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 388 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:05:31,050 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2021-06-05 08:05:31,050 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:05:31,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 34 conjunts are in the unsatisfiable core [2021-06-05 08:05:31,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:05:31,234 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:05:31,234 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1769814421] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:05:31,234 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:05:31,234 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2021-06-05 08:05:31,234 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035831573] [2021-06-05 08:05:31,234 INFO L462 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-06-05 08:05:31,234 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:05:31,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-06-05 08:05:31,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=890, Unknown=0, NotChecked=0, Total=1056 [2021-06-05 08:05:31,235 INFO L87 Difference]: Start difference. First operand 4338 states and 12028 transitions. Second operand has 33 states, 33 states have (on average 5.151515151515151) internal successors, (170), 33 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:32,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:05:32,027 INFO L93 Difference]: Finished difference Result 6306 states and 16167 transitions. [2021-06-05 08:05:32,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-06-05 08:05:32,027 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 5.151515151515151) internal successors, (170), 33 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 170 [2021-06-05 08:05:32,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:05:32,032 INFO L225 Difference]: With dead ends: 6306 [2021-06-05 08:05:32,032 INFO L226 Difference]: Without dead ends: 6036 [2021-06-05 08:05:32,033 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1194 ImplicationChecksByTransitivity, 853.4ms TimeCoverageRelationStatistics Valid=1277, Invalid=4125, Unknown=0, NotChecked=0, Total=5402 [2021-06-05 08:05:32,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6036 states. [2021-06-05 08:05:32,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6036 to 4413. [2021-06-05 08:05:32,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4413 states, 4412 states have (on average 2.777198549410698) internal successors, (12253), 4412 states have internal predecessors, (12253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:32,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4413 states to 4413 states and 12253 transitions. [2021-06-05 08:05:32,085 INFO L78 Accepts]: Start accepts. Automaton has 4413 states and 12253 transitions. Word has length 170 [2021-06-05 08:05:32,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:05:32,086 INFO L482 AbstractCegarLoop]: Abstraction has 4413 states and 12253 transitions. [2021-06-05 08:05:32,086 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 5.151515151515151) internal successors, (170), 33 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:32,086 INFO L276 IsEmpty]: Start isEmpty. Operand 4413 states and 12253 transitions. [2021-06-05 08:05:32,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-06-05 08:05:32,089 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:05:32,089 INFO L521 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:05:32,289 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 388 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable392 [2021-06-05 08:05:32,290 INFO L430 AbstractCegarLoop]: === Iteration 394 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:05:32,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:05:32,290 INFO L82 PathProgramCache]: Analyzing trace with hash 271643259, now seen corresponding path program 385 times [2021-06-05 08:05:32,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:05:32,290 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287832473] [2021-06-05 08:05:32,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:05:32,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:05:32,601 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:05:32,601 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:05:32,601 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287832473] [2021-06-05 08:05:32,601 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287832473] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:05:32,601 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [540218707] [2021-06-05 08:05:32,601 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 389 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 389 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:05:32,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:05:32,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 34 conjunts are in the unsatisfiable core [2021-06-05 08:05:32,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:05:32,876 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:05:32,876 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [540218707] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:05:32,876 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:05:32,876 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 34 [2021-06-05 08:05:32,876 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440112369] [2021-06-05 08:05:32,876 INFO L462 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-06-05 08:05:32,876 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:05:32,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-06-05 08:05:32,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=961, Unknown=0, NotChecked=0, Total=1122 [2021-06-05 08:05:32,877 INFO L87 Difference]: Start difference. First operand 4413 states and 12253 transitions. Second operand has 34 states, 34 states have (on average 5.0588235294117645) internal successors, (172), 34 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:33,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:05:33,863 INFO L93 Difference]: Finished difference Result 6331 states and 16292 transitions. [2021-06-05 08:05:33,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-06-05 08:05:33,863 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 5.0588235294117645) internal successors, (172), 34 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 170 [2021-06-05 08:05:33,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:05:33,869 INFO L225 Difference]: With dead ends: 6331 [2021-06-05 08:05:33,869 INFO L226 Difference]: Without dead ends: 6061 [2021-06-05 08:05:33,870 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1331 ImplicationChecksByTransitivity, 1019.1ms TimeCoverageRelationStatistics Valid=1400, Invalid=4606, Unknown=0, NotChecked=0, Total=6006 [2021-06-05 08:05:33,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6061 states. [2021-06-05 08:05:33,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6061 to 4488. [2021-06-05 08:05:33,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4488 states, 4487 states have (on average 2.7809226654780477) internal successors, (12478), 4487 states have internal predecessors, (12478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:33,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4488 states to 4488 states and 12478 transitions. [2021-06-05 08:05:33,927 INFO L78 Accepts]: Start accepts. Automaton has 4488 states and 12478 transitions. Word has length 170 [2021-06-05 08:05:33,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:05:33,928 INFO L482 AbstractCegarLoop]: Abstraction has 4488 states and 12478 transitions. [2021-06-05 08:05:33,928 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 5.0588235294117645) internal successors, (172), 34 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:33,928 INFO L276 IsEmpty]: Start isEmpty. Operand 4488 states and 12478 transitions. [2021-06-05 08:05:33,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-06-05 08:05:33,931 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:05:33,931 INFO L521 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:05:34,131 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable393,389 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:05:34,132 INFO L430 AbstractCegarLoop]: === Iteration 395 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:05:34,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:05:34,132 INFO L82 PathProgramCache]: Analyzing trace with hash -1343310231, now seen corresponding path program 386 times [2021-06-05 08:05:34,132 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:05:34,132 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659529010] [2021-06-05 08:05:34,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:05:34,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:05:34,428 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:05:34,429 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:05:34,429 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659529010] [2021-06-05 08:05:34,429 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659529010] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:05:34,429 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1331109068] [2021-06-05 08:05:34,429 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 390 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 390 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:05:34,493 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 08:05:34,493 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:05:34,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 34 conjunts are in the unsatisfiable core [2021-06-05 08:05:34,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:05:34,705 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:05:34,705 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1331109068] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:05:34,706 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:05:34,706 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2021-06-05 08:05:34,706 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008761270] [2021-06-05 08:05:34,706 INFO L462 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-06-05 08:05:34,706 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:05:34,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-06-05 08:05:34,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=894, Unknown=0, NotChecked=0, Total=1056 [2021-06-05 08:05:34,706 INFO L87 Difference]: Start difference. First operand 4488 states and 12478 transitions. Second operand has 33 states, 33 states have (on average 5.151515151515151) internal successors, (170), 33 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:35,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:05:35,546 INFO L93 Difference]: Finished difference Result 6356 states and 16417 transitions. [2021-06-05 08:05:35,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-06-05 08:05:35,546 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 5.151515151515151) internal successors, (170), 33 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 170 [2021-06-05 08:05:35,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:05:35,552 INFO L225 Difference]: With dead ends: 6356 [2021-06-05 08:05:35,552 INFO L226 Difference]: Without dead ends: 6086 [2021-06-05 08:05:35,553 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1302 ImplicationChecksByTransitivity, 879.5ms TimeCoverageRelationStatistics Valid=1354, Invalid=4346, Unknown=0, NotChecked=0, Total=5700 [2021-06-05 08:05:35,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6086 states. [2021-06-05 08:05:35,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6086 to 4563. [2021-06-05 08:05:35,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4563 states, 4562 states have (on average 2.7845243314335817) internal successors, (12703), 4562 states have internal predecessors, (12703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:35,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4563 states to 4563 states and 12703 transitions. [2021-06-05 08:05:35,605 INFO L78 Accepts]: Start accepts. Automaton has 4563 states and 12703 transitions. Word has length 170 [2021-06-05 08:05:35,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:05:35,605 INFO L482 AbstractCegarLoop]: Abstraction has 4563 states and 12703 transitions. [2021-06-05 08:05:35,605 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 5.151515151515151) internal successors, (170), 33 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:35,605 INFO L276 IsEmpty]: Start isEmpty. Operand 4563 states and 12703 transitions. [2021-06-05 08:05:35,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-06-05 08:05:35,609 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:05:35,609 INFO L521 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:05:35,809 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 390 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable394 [2021-06-05 08:05:35,809 INFO L430 AbstractCegarLoop]: === Iteration 396 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:05:35,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:05:35,809 INFO L82 PathProgramCache]: Analyzing trace with hash -1723754183, now seen corresponding path program 387 times [2021-06-05 08:05:35,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:05:35,810 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807036492] [2021-06-05 08:05:35,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:05:35,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:05:36,110 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:05:36,110 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:05:36,110 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807036492] [2021-06-05 08:05:36,110 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807036492] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:05:36,110 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2099187440] [2021-06-05 08:05:36,110 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 391 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 391 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:05:36,186 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2021-06-05 08:05:36,186 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:05:36,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 34 conjunts are in the unsatisfiable core [2021-06-05 08:05:36,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:05:36,388 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:05:36,388 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2099187440] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:05:36,388 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:05:36,388 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 34 [2021-06-05 08:05:36,389 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734764765] [2021-06-05 08:05:36,389 INFO L462 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-06-05 08:05:36,389 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:05:36,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-06-05 08:05:36,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=964, Unknown=0, NotChecked=0, Total=1122 [2021-06-05 08:05:36,389 INFO L87 Difference]: Start difference. First operand 4563 states and 12703 transitions. Second operand has 34 states, 34 states have (on average 5.0588235294117645) internal successors, (172), 34 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:37,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:05:37,453 INFO L93 Difference]: Finished difference Result 6381 states and 16542 transitions. [2021-06-05 08:05:37,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-06-05 08:05:37,453 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 5.0588235294117645) internal successors, (172), 34 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 170 [2021-06-05 08:05:37,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:05:37,458 INFO L225 Difference]: With dead ends: 6381 [2021-06-05 08:05:37,458 INFO L226 Difference]: Without dead ends: 6111 [2021-06-05 08:05:37,458 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1446 ImplicationChecksByTransitivity, 1082.9ms TimeCoverageRelationStatistics Valid=1485, Invalid=4835, Unknown=0, NotChecked=0, Total=6320 [2021-06-05 08:05:37,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6111 states. [2021-06-05 08:05:37,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6111 to 4638. [2021-06-05 08:05:37,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4638 states, 4637 states have (on average 2.7880094888936813) internal successors, (12928), 4637 states have internal predecessors, (12928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:37,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4638 states to 4638 states and 12928 transitions. [2021-06-05 08:05:37,513 INFO L78 Accepts]: Start accepts. Automaton has 4638 states and 12928 transitions. Word has length 170 [2021-06-05 08:05:37,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:05:37,513 INFO L482 AbstractCegarLoop]: Abstraction has 4638 states and 12928 transitions. [2021-06-05 08:05:37,513 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 5.0588235294117645) internal successors, (172), 34 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:37,513 INFO L276 IsEmpty]: Start isEmpty. Operand 4638 states and 12928 transitions. [2021-06-05 08:05:37,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-06-05 08:05:37,517 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:05:37,517 INFO L521 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:05:37,717 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable395,391 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:05:37,717 INFO L430 AbstractCegarLoop]: === Iteration 397 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:05:37,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:05:37,718 INFO L82 PathProgramCache]: Analyzing trace with hash -1099379033, now seen corresponding path program 388 times [2021-06-05 08:05:37,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:05:37,718 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587368565] [2021-06-05 08:05:37,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:05:37,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:05:38,007 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:05:38,008 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:05:38,008 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587368565] [2021-06-05 08:05:38,008 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587368565] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:05:38,008 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1420324194] [2021-06-05 08:05:38,008 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 392 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 392 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:05:38,070 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 08:05:38,071 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:05:38,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 34 conjunts are in the unsatisfiable core [2021-06-05 08:05:38,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:05:38,250 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:05:38,250 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1420324194] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:05:38,250 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:05:38,250 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2021-06-05 08:05:38,250 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888492508] [2021-06-05 08:05:38,250 INFO L462 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-06-05 08:05:38,250 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:05:38,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-06-05 08:05:38,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=894, Unknown=0, NotChecked=0, Total=1056 [2021-06-05 08:05:38,251 INFO L87 Difference]: Start difference. First operand 4638 states and 12928 transitions. Second operand has 33 states, 33 states have (on average 5.151515151515151) internal successors, (170), 33 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:39,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:05:39,144 INFO L93 Difference]: Finished difference Result 6406 states and 16667 transitions. [2021-06-05 08:05:39,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-06-05 08:05:39,144 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 5.151515151515151) internal successors, (170), 33 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 170 [2021-06-05 08:05:39,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:05:39,150 INFO L225 Difference]: With dead ends: 6406 [2021-06-05 08:05:39,150 INFO L226 Difference]: Without dead ends: 6136 [2021-06-05 08:05:39,151 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1414 ImplicationChecksByTransitivity, 919.1ms TimeCoverageRelationStatistics Valid=1447, Invalid=4559, Unknown=0, NotChecked=0, Total=6006 [2021-06-05 08:05:39,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6136 states. [2021-06-05 08:05:39,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6136 to 4713. [2021-06-05 08:05:39,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4713 states, 4712 states have (on average 2.791383701188455) internal successors, (13153), 4712 states have internal predecessors, (13153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:39,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4713 states to 4713 states and 13153 transitions. [2021-06-05 08:05:39,206 INFO L78 Accepts]: Start accepts. Automaton has 4713 states and 13153 transitions. Word has length 170 [2021-06-05 08:05:39,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:05:39,206 INFO L482 AbstractCegarLoop]: Abstraction has 4713 states and 13153 transitions. [2021-06-05 08:05:39,206 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 5.151515151515151) internal successors, (170), 33 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:39,206 INFO L276 IsEmpty]: Start isEmpty. Operand 4713 states and 13153 transitions. [2021-06-05 08:05:39,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-06-05 08:05:39,209 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:05:39,210 INFO L521 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:05:39,410 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable396,392 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:05:39,410 INFO L430 AbstractCegarLoop]: === Iteration 398 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:05:39,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:05:39,410 INFO L82 PathProgramCache]: Analyzing trace with hash -290327177, now seen corresponding path program 389 times [2021-06-05 08:05:39,411 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:05:39,411 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410496165] [2021-06-05 08:05:39,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:05:39,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:05:39,718 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:05:39,719 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:05:39,719 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410496165] [2021-06-05 08:05:39,719 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410496165] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:05:39,719 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1700468131] [2021-06-05 08:05:39,719 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 393 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 393 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:05:39,786 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2021-06-05 08:05:39,786 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:05:39,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 34 conjunts are in the unsatisfiable core [2021-06-05 08:05:39,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:05:39,981 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:05:39,981 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1700468131] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:05:39,981 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:05:39,981 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 34 [2021-06-05 08:05:39,981 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381055453] [2021-06-05 08:05:39,981 INFO L462 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-06-05 08:05:39,981 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:05:39,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-06-05 08:05:39,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=963, Unknown=0, NotChecked=0, Total=1122 [2021-06-05 08:05:39,982 INFO L87 Difference]: Start difference. First operand 4713 states and 13153 transitions. Second operand has 34 states, 34 states have (on average 5.0588235294117645) internal successors, (172), 34 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:41,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:05:41,084 INFO L93 Difference]: Finished difference Result 6431 states and 16792 transitions. [2021-06-05 08:05:41,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-06-05 08:05:41,084 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 5.0588235294117645) internal successors, (172), 34 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 170 [2021-06-05 08:05:41,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:05:41,090 INFO L225 Difference]: With dead ends: 6431 [2021-06-05 08:05:41,090 INFO L226 Difference]: Without dead ends: 6161 [2021-06-05 08:05:41,091 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1565 ImplicationChecksByTransitivity, 1119.9ms TimeCoverageRelationStatistics Valid=1586, Invalid=5056, Unknown=0, NotChecked=0, Total=6642 [2021-06-05 08:05:41,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6161 states. [2021-06-05 08:05:41,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6161 to 4788. [2021-06-05 08:05:41,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4788 states, 4787 states have (on average 2.794652182995613) internal successors, (13378), 4787 states have internal predecessors, (13378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:41,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4788 states to 4788 states and 13378 transitions. [2021-06-05 08:05:41,148 INFO L78 Accepts]: Start accepts. Automaton has 4788 states and 13378 transitions. Word has length 170 [2021-06-05 08:05:41,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:05:41,148 INFO L482 AbstractCegarLoop]: Abstraction has 4788 states and 13378 transitions. [2021-06-05 08:05:41,148 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 5.0588235294117645) internal successors, (172), 34 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:41,148 INFO L276 IsEmpty]: Start isEmpty. Operand 4788 states and 13378 transitions. [2021-06-05 08:05:41,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-06-05 08:05:41,151 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:05:41,152 INFO L521 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:05:41,352 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable397,393 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:05:41,352 INFO L430 AbstractCegarLoop]: === Iteration 399 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:05:41,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:05:41,352 INFO L82 PathProgramCache]: Analyzing trace with hash -1682277275, now seen corresponding path program 390 times [2021-06-05 08:05:41,352 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:05:41,353 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290575521] [2021-06-05 08:05:41,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:05:41,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:05:41,654 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:05:41,654 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:05:41,654 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290575521] [2021-06-05 08:05:41,654 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290575521] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:05:41,654 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [258402139] [2021-06-05 08:05:41,655 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 394 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 394 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:05:41,731 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2021-06-05 08:05:41,731 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:05:41,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 34 conjunts are in the unsatisfiable core [2021-06-05 08:05:41,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:05:41,918 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:05:41,918 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [258402139] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:05:41,918 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:05:41,918 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2021-06-05 08:05:41,919 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118875064] [2021-06-05 08:05:41,919 INFO L462 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-06-05 08:05:41,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:05:41,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-06-05 08:05:41,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=890, Unknown=0, NotChecked=0, Total=1056 [2021-06-05 08:05:41,919 INFO L87 Difference]: Start difference. First operand 4788 states and 13378 transitions. Second operand has 33 states, 33 states have (on average 5.151515151515151) internal successors, (170), 33 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:42,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:05:42,897 INFO L93 Difference]: Finished difference Result 6456 states and 16917 transitions. [2021-06-05 08:05:42,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-06-05 08:05:42,897 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 5.151515151515151) internal successors, (170), 33 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 170 [2021-06-05 08:05:42,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:05:42,904 INFO L225 Difference]: With dead ends: 6456 [2021-06-05 08:05:42,904 INFO L226 Difference]: Without dead ends: 6186 [2021-06-05 08:05:42,905 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1530 ImplicationChecksByTransitivity, 951.9ms TimeCoverageRelationStatistics Valid=1556, Invalid=4764, Unknown=0, NotChecked=0, Total=6320 [2021-06-05 08:05:42,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6186 states. [2021-06-05 08:05:42,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6186 to 4863. [2021-06-05 08:05:42,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4863 states, 4862 states have (on average 2.7978198272315917) internal successors, (13603), 4862 states have internal predecessors, (13603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:42,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4863 states to 4863 states and 13603 transitions. [2021-06-05 08:05:42,987 INFO L78 Accepts]: Start accepts. Automaton has 4863 states and 13603 transitions. Word has length 170 [2021-06-05 08:05:42,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:05:42,988 INFO L482 AbstractCegarLoop]: Abstraction has 4863 states and 13603 transitions. [2021-06-05 08:05:42,988 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 5.151515151515151) internal successors, (170), 33 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:42,988 INFO L276 IsEmpty]: Start isEmpty. Operand 4863 states and 13603 transitions. [2021-06-05 08:05:42,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-06-05 08:05:42,992 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:05:42,992 INFO L521 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:05:43,204 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 394 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable398 [2021-06-05 08:05:43,205 INFO L430 AbstractCegarLoop]: === Iteration 400 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:05:43,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:05:43,205 INFO L82 PathProgramCache]: Analyzing trace with hash -1927354571, now seen corresponding path program 391 times [2021-06-05 08:05:43,205 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:05:43,205 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999663254] [2021-06-05 08:05:43,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:05:43,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:05:43,501 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:05:43,502 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:05:43,502 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999663254] [2021-06-05 08:05:43,502 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999663254] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:05:43,502 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1557727365] [2021-06-05 08:05:43,502 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 395 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 395 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:05:43,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:05:43,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 34 conjunts are in the unsatisfiable core [2021-06-05 08:05:43,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:05:43,761 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:05:43,761 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1557727365] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:05:43,761 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:05:43,761 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 34 [2021-06-05 08:05:43,761 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372387080] [2021-06-05 08:05:43,761 INFO L462 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-06-05 08:05:43,761 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:05:43,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-06-05 08:05:43,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=958, Unknown=0, NotChecked=0, Total=1122 [2021-06-05 08:05:43,762 INFO L87 Difference]: Start difference. First operand 4863 states and 13603 transitions. Second operand has 34 states, 34 states have (on average 5.0588235294117645) internal successors, (172), 34 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:44,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:05:44,901 INFO L93 Difference]: Finished difference Result 6481 states and 17042 transitions. [2021-06-05 08:05:44,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-06-05 08:05:44,902 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 5.0588235294117645) internal successors, (172), 34 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 170 [2021-06-05 08:05:44,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:05:44,908 INFO L225 Difference]: With dead ends: 6481 [2021-06-05 08:05:44,908 INFO L226 Difference]: Without dead ends: 6211 [2021-06-05 08:05:44,909 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1688 ImplicationChecksByTransitivity, 1147.4ms TimeCoverageRelationStatistics Valid=1703, Invalid=5269, Unknown=0, NotChecked=0, Total=6972 [2021-06-05 08:05:44,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6211 states. [2021-06-05 08:05:44,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6211 to 4938. [2021-06-05 08:05:44,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4938 states, 4937 states have (on average 2.800891229491594) internal successors, (13828), 4937 states have internal predecessors, (13828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:44,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4938 states to 4938 states and 13828 transitions. [2021-06-05 08:05:44,968 INFO L78 Accepts]: Start accepts. Automaton has 4938 states and 13828 transitions. Word has length 170 [2021-06-05 08:05:44,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:05:44,968 INFO L482 AbstractCegarLoop]: Abstraction has 4938 states and 13828 transitions. [2021-06-05 08:05:44,969 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 5.0588235294117645) internal successors, (172), 34 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:44,969 INFO L276 IsEmpty]: Start isEmpty. Operand 4938 states and 13828 transitions. [2021-06-05 08:05:44,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-06-05 08:05:44,972 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:05:44,972 INFO L521 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:05:45,173 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable399,395 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:05:45,173 INFO L430 AbstractCegarLoop]: === Iteration 401 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:05:45,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:05:45,173 INFO L82 PathProgramCache]: Analyzing trace with hash 1990762403, now seen corresponding path program 392 times [2021-06-05 08:05:45,173 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:05:45,173 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774101866] [2021-06-05 08:05:45,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:05:45,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:05:45,459 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:05:45,459 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:05:45,460 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774101866] [2021-06-05 08:05:45,460 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774101866] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:05:45,460 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [85707899] [2021-06-05 08:05:45,460 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 396 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 396 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:05:45,523 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 08:05:45,524 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:05:45,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 34 conjunts are in the unsatisfiable core [2021-06-05 08:05:45,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:05:45,717 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:05:45,717 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [85707899] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:05:45,717 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:05:45,718 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2021-06-05 08:05:45,718 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140775124] [2021-06-05 08:05:45,718 INFO L462 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-06-05 08:05:45,718 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:05:45,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-06-05 08:05:45,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=882, Unknown=0, NotChecked=0, Total=1056 [2021-06-05 08:05:45,718 INFO L87 Difference]: Start difference. First operand 4938 states and 13828 transitions. Second operand has 33 states, 33 states have (on average 5.151515151515151) internal successors, (170), 33 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:46,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:05:46,741 INFO L93 Difference]: Finished difference Result 6506 states and 17167 transitions. [2021-06-05 08:05:46,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-06-05 08:05:46,741 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 5.151515151515151) internal successors, (170), 33 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 170 [2021-06-05 08:05:46,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:05:46,748 INFO L225 Difference]: With dead ends: 6506 [2021-06-05 08:05:46,748 INFO L226 Difference]: Without dead ends: 6236 [2021-06-05 08:05:46,748 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1650 ImplicationChecksByTransitivity, 973.1ms TimeCoverageRelationStatistics Valid=1681, Invalid=4961, Unknown=0, NotChecked=0, Total=6642 [2021-06-05 08:05:46,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6236 states. [2021-06-05 08:05:46,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6236 to 5013. [2021-06-05 08:05:46,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5013 states, 5012 states have (on average 2.8038707102952913) internal successors, (14053), 5012 states have internal predecessors, (14053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:46,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5013 states to 5013 states and 14053 transitions. [2021-06-05 08:05:46,808 INFO L78 Accepts]: Start accepts. Automaton has 5013 states and 14053 transitions. Word has length 170 [2021-06-05 08:05:46,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:05:46,809 INFO L482 AbstractCegarLoop]: Abstraction has 5013 states and 14053 transitions. [2021-06-05 08:05:46,809 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 5.151515151515151) internal successors, (170), 33 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:46,809 INFO L276 IsEmpty]: Start isEmpty. Operand 5013 states and 14053 transitions. [2021-06-05 08:05:46,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-06-05 08:05:46,812 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:05:46,812 INFO L521 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:05:47,013 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 396 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable400 [2021-06-05 08:05:47,013 INFO L430 AbstractCegarLoop]: === Iteration 402 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:05:47,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:05:47,013 INFO L82 PathProgramCache]: Analyzing trace with hash -977449357, now seen corresponding path program 393 times [2021-06-05 08:05:47,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:05:47,013 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357448113] [2021-06-05 08:05:47,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:05:47,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:05:47,304 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:05:47,304 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:05:47,304 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357448113] [2021-06-05 08:05:47,304 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357448113] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:05:47,304 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [500740139] [2021-06-05 08:05:47,304 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 397 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 397 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:05:47,387 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2021-06-05 08:05:47,387 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:05:47,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 34 conjunts are in the unsatisfiable core [2021-06-05 08:05:47,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:05:47,586 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:05:47,586 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [500740139] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:05:47,586 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:05:47,587 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 34 [2021-06-05 08:05:47,587 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252441804] [2021-06-05 08:05:47,587 INFO L462 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-06-05 08:05:47,587 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:05:47,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-06-05 08:05:47,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=949, Unknown=0, NotChecked=0, Total=1122 [2021-06-05 08:05:47,587 INFO L87 Difference]: Start difference. First operand 5013 states and 14053 transitions. Second operand has 34 states, 34 states have (on average 5.0588235294117645) internal successors, (172), 34 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:48,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:05:48,855 INFO L93 Difference]: Finished difference Result 6531 states and 17292 transitions. [2021-06-05 08:05:48,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-06-05 08:05:48,855 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 5.0588235294117645) internal successors, (172), 34 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 170 [2021-06-05 08:05:48,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:05:48,861 INFO L225 Difference]: With dead ends: 6531 [2021-06-05 08:05:48,861 INFO L226 Difference]: Without dead ends: 6261 [2021-06-05 08:05:48,861 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1815 ImplicationChecksByTransitivity, 1223.8ms TimeCoverageRelationStatistics Valid=1836, Invalid=5474, Unknown=0, NotChecked=0, Total=7310 [2021-06-05 08:05:48,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6261 states. [2021-06-05 08:05:48,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6261 to 5088. [2021-06-05 08:05:48,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5088 states, 5087 states have (on average 2.806762335364655) internal successors, (14278), 5087 states have internal predecessors, (14278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:48,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5088 states to 5088 states and 14278 transitions. [2021-06-05 08:05:48,925 INFO L78 Accepts]: Start accepts. Automaton has 5088 states and 14278 transitions. Word has length 170 [2021-06-05 08:05:48,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:05:48,926 INFO L482 AbstractCegarLoop]: Abstraction has 5088 states and 14278 transitions. [2021-06-05 08:05:48,926 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 5.0588235294117645) internal successors, (172), 34 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:48,926 INFO L276 IsEmpty]: Start isEmpty. Operand 5088 states and 14278 transitions. [2021-06-05 08:05:48,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-06-05 08:05:48,930 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:05:48,930 INFO L521 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:05:49,130 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 397 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable401 [2021-06-05 08:05:49,130 INFO L430 AbstractCegarLoop]: === Iteration 403 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:05:49,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:05:49,131 INFO L82 PathProgramCache]: Analyzing trace with hash -523233183, now seen corresponding path program 394 times [2021-06-05 08:05:49,131 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:05:49,131 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511474934] [2021-06-05 08:05:49,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:05:49,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:05:49,413 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:05:49,413 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:05:49,413 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511474934] [2021-06-05 08:05:49,413 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511474934] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:05:49,413 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [921782020] [2021-06-05 08:05:49,413 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 398 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 398 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:05:49,478 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 08:05:49,478 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:05:49,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 34 conjunts are in the unsatisfiable core [2021-06-05 08:05:49,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:05:49,673 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:05:49,673 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [921782020] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:05:49,673 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:05:49,673 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2021-06-05 08:05:49,673 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463567203] [2021-06-05 08:05:49,673 INFO L462 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-06-05 08:05:49,673 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:05:49,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-06-05 08:05:49,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=870, Unknown=0, NotChecked=0, Total=1056 [2021-06-05 08:05:49,674 INFO L87 Difference]: Start difference. First operand 5088 states and 14278 transitions. Second operand has 33 states, 33 states have (on average 5.151515151515151) internal successors, (170), 33 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:50,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:05:50,700 INFO L93 Difference]: Finished difference Result 6556 states and 17417 transitions. [2021-06-05 08:05:50,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-06-05 08:05:50,701 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 5.151515151515151) internal successors, (170), 33 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 170 [2021-06-05 08:05:50,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:05:50,707 INFO L225 Difference]: With dead ends: 6556 [2021-06-05 08:05:50,707 INFO L226 Difference]: Without dead ends: 6286 [2021-06-05 08:05:50,708 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1774 ImplicationChecksByTransitivity, 1008.9ms TimeCoverageRelationStatistics Valid=1822, Invalid=5150, Unknown=0, NotChecked=0, Total=6972 [2021-06-05 08:05:50,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6286 states. [2021-06-05 08:05:50,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6286 to 5163. [2021-06-05 08:05:50,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5163 states, 5162 states have (on average 2.8095699341340565) internal successors, (14503), 5162 states have internal predecessors, (14503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:50,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5163 states to 5163 states and 14503 transitions. [2021-06-05 08:05:50,767 INFO L78 Accepts]: Start accepts. Automaton has 5163 states and 14503 transitions. Word has length 170 [2021-06-05 08:05:50,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:05:50,767 INFO L482 AbstractCegarLoop]: Abstraction has 5163 states and 14503 transitions. [2021-06-05 08:05:50,767 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 5.151515151515151) internal successors, (170), 33 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:50,767 INFO L276 IsEmpty]: Start isEmpty. Operand 5163 states and 14503 transitions. [2021-06-05 08:05:50,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-06-05 08:05:50,771 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:05:50,771 INFO L521 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:05:50,971 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable402,398 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:05:50,972 INFO L430 AbstractCegarLoop]: === Iteration 404 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:05:50,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:05:50,972 INFO L82 PathProgramCache]: Analyzing trace with hash 475663153, now seen corresponding path program 395 times [2021-06-05 08:05:50,972 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:05:50,972 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843532099] [2021-06-05 08:05:50,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:05:50,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:05:51,259 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:05:51,259 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:05:51,259 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843532099] [2021-06-05 08:05:51,260 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843532099] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:05:51,260 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1397431306] [2021-06-05 08:05:51,260 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 399 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 399 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:05:51,327 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2021-06-05 08:05:51,327 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:05:51,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 34 conjunts are in the unsatisfiable core [2021-06-05 08:05:51,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:05:51,528 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:05:51,529 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1397431306] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:05:51,529 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:05:51,529 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 34 [2021-06-05 08:05:51,529 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511307490] [2021-06-05 08:05:51,529 INFO L462 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-06-05 08:05:51,529 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:05:51,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-06-05 08:05:51,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=936, Unknown=0, NotChecked=0, Total=1122 [2021-06-05 08:05:51,530 INFO L87 Difference]: Start difference. First operand 5163 states and 14503 transitions. Second operand has 34 states, 34 states have (on average 5.0588235294117645) internal successors, (172), 34 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:52,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:05:52,840 INFO L93 Difference]: Finished difference Result 6581 states and 17542 transitions. [2021-06-05 08:05:52,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-06-05 08:05:52,840 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 5.0588235294117645) internal successors, (172), 34 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 170 [2021-06-05 08:05:52,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:05:52,847 INFO L225 Difference]: With dead ends: 6581 [2021-06-05 08:05:52,847 INFO L226 Difference]: Without dead ends: 6311 [2021-06-05 08:05:52,848 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1946 ImplicationChecksByTransitivity, 1253.0ms TimeCoverageRelationStatistics Valid=1985, Invalid=5671, Unknown=0, NotChecked=0, Total=7656 [2021-06-05 08:05:52,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6311 states. [2021-06-05 08:05:52,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6311 to 5238. [2021-06-05 08:05:52,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5238 states, 5237 states have (on average 2.812297116669849) internal successors, (14728), 5237 states have internal predecessors, (14728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:52,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5238 states to 5238 states and 14728 transitions. [2021-06-05 08:05:52,913 INFO L78 Accepts]: Start accepts. Automaton has 5238 states and 14728 transitions. Word has length 170 [2021-06-05 08:05:52,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:05:52,913 INFO L482 AbstractCegarLoop]: Abstraction has 5238 states and 14728 transitions. [2021-06-05 08:05:52,913 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 5.0588235294117645) internal successors, (172), 34 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:52,913 INFO L276 IsEmpty]: Start isEmpty. Operand 5238 states and 14728 transitions. [2021-06-05 08:05:52,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-06-05 08:05:52,917 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:05:52,917 INFO L521 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:05:53,117 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 399 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable403 [2021-06-05 08:05:53,117 INFO L430 AbstractCegarLoop]: === Iteration 405 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:05:53,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:05:53,118 INFO L82 PathProgramCache]: Analyzing trace with hash -1403664737, now seen corresponding path program 396 times [2021-06-05 08:05:53,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:05:53,118 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715541976] [2021-06-05 08:05:53,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:05:53,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:05:53,400 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:05:53,400 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:05:53,400 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715541976] [2021-06-05 08:05:53,400 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715541976] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:05:53,400 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1399332985] [2021-06-05 08:05:53,400 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 400 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 400 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:05:53,477 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2021-06-05 08:05:53,477 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:05:53,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 34 conjunts are in the unsatisfiable core [2021-06-05 08:05:53,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:05:53,649 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:05:53,649 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1399332985] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:05:53,649 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:05:53,650 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2021-06-05 08:05:53,650 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657182584] [2021-06-05 08:05:53,650 INFO L462 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-06-05 08:05:53,650 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:05:53,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-06-05 08:05:53,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=854, Unknown=0, NotChecked=0, Total=1056 [2021-06-05 08:05:53,650 INFO L87 Difference]: Start difference. First operand 5238 states and 14728 transitions. Second operand has 33 states, 33 states have (on average 5.151515151515151) internal successors, (170), 33 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:54,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:05:54,763 INFO L93 Difference]: Finished difference Result 6606 states and 17667 transitions. [2021-06-05 08:05:54,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-06-05 08:05:54,764 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 5.151515151515151) internal successors, (170), 33 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 170 [2021-06-05 08:05:54,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:05:54,770 INFO L225 Difference]: With dead ends: 6606 [2021-06-05 08:05:54,770 INFO L226 Difference]: Without dead ends: 6336 [2021-06-05 08:05:54,771 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1902 ImplicationChecksByTransitivity, 1068.7ms TimeCoverageRelationStatistics Valid=1979, Invalid=5331, Unknown=0, NotChecked=0, Total=7310 [2021-06-05 08:05:54,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6336 states. [2021-06-05 08:05:54,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6336 to 5313. [2021-06-05 08:05:54,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5313 states, 5312 states have (on average 2.8149472891566263) internal successors, (14953), 5312 states have internal predecessors, (14953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:54,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5313 states to 5313 states and 14953 transitions. [2021-06-05 08:05:54,832 INFO L78 Accepts]: Start accepts. Automaton has 5313 states and 14953 transitions. Word has length 170 [2021-06-05 08:05:54,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:05:54,833 INFO L482 AbstractCegarLoop]: Abstraction has 5313 states and 14953 transitions. [2021-06-05 08:05:54,833 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 5.151515151515151) internal successors, (170), 33 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:54,833 INFO L276 IsEmpty]: Start isEmpty. Operand 5313 states and 14953 transitions. [2021-06-05 08:05:54,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-06-05 08:05:54,837 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:05:54,837 INFO L521 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:05:55,037 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 400 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable404 [2021-06-05 08:05:55,038 INFO L430 AbstractCegarLoop]: === Iteration 406 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:05:55,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:05:55,038 INFO L82 PathProgramCache]: Analyzing trace with hash 626654575, now seen corresponding path program 397 times [2021-06-05 08:05:55,038 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:05:55,038 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576294249] [2021-06-05 08:05:55,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:05:55,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:05:55,329 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:05:55,330 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:05:55,330 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576294249] [2021-06-05 08:05:55,330 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576294249] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:05:55,330 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [372528865] [2021-06-05 08:05:55,330 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 401 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 401 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:05:55,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:05:55,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 34 conjunts are in the unsatisfiable core [2021-06-05 08:05:55,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:05:55,584 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:05:55,584 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [372528865] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:05:55,584 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:05:55,584 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 34 [2021-06-05 08:05:55,585 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333149682] [2021-06-05 08:05:55,585 INFO L462 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-06-05 08:05:55,585 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:05:55,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-06-05 08:05:55,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=919, Unknown=0, NotChecked=0, Total=1122 [2021-06-05 08:05:55,585 INFO L87 Difference]: Start difference. First operand 5313 states and 14953 transitions. Second operand has 34 states, 34 states have (on average 5.0588235294117645) internal successors, (172), 34 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:56,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:05:56,942 INFO L93 Difference]: Finished difference Result 6631 states and 17792 transitions. [2021-06-05 08:05:56,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-06-05 08:05:56,942 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 5.0588235294117645) internal successors, (172), 34 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 170 [2021-06-05 08:05:56,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:05:56,949 INFO L225 Difference]: With dead ends: 6631 [2021-06-05 08:05:56,949 INFO L226 Difference]: Without dead ends: 6361 [2021-06-05 08:05:56,950 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2081 ImplicationChecksByTransitivity, 1298.0ms TimeCoverageRelationStatistics Valid=2150, Invalid=5860, Unknown=0, NotChecked=0, Total=8010 [2021-06-05 08:05:56,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6361 states. [2021-06-05 08:05:57,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6361 to 5388. [2021-06-05 08:05:57,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5388 states, 5387 states have (on average 2.817523668089846) internal successors, (15178), 5387 states have internal predecessors, (15178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:57,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5388 states to 5388 states and 15178 transitions. [2021-06-05 08:05:57,019 INFO L78 Accepts]: Start accepts. Automaton has 5388 states and 15178 transitions. Word has length 170 [2021-06-05 08:05:57,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:05:57,020 INFO L482 AbstractCegarLoop]: Abstraction has 5388 states and 15178 transitions. [2021-06-05 08:05:57,020 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 5.0588235294117645) internal successors, (172), 34 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:57,020 INFO L276 IsEmpty]: Start isEmpty. Operand 5388 states and 15178 transitions. [2021-06-05 08:05:57,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-06-05 08:05:57,025 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:05:57,025 INFO L521 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:05:57,225 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable405,401 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:05:57,225 INFO L430 AbstractCegarLoop]: === Iteration 407 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:05:57,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:05:57,225 INFO L82 PathProgramCache]: Analyzing trace with hash 1240894045, now seen corresponding path program 398 times [2021-06-05 08:05:57,225 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:05:57,226 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857680573] [2021-06-05 08:05:57,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:05:57,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:05:57,543 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:05:57,543 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:05:57,543 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857680573] [2021-06-05 08:05:57,543 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857680573] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:05:57,543 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [722614810] [2021-06-05 08:05:57,544 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 402 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 402 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:05:57,608 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 08:05:57,608 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:05:57,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 34 conjunts are in the unsatisfiable core [2021-06-05 08:05:57,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:05:57,789 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:05:57,789 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [722614810] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:05:57,789 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:05:57,789 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2021-06-05 08:05:57,790 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111582380] [2021-06-05 08:05:57,790 INFO L462 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-06-05 08:05:57,790 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:05:57,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-06-05 08:05:57,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=834, Unknown=0, NotChecked=0, Total=1056 [2021-06-05 08:05:57,790 INFO L87 Difference]: Start difference. First operand 5388 states and 15178 transitions. Second operand has 33 states, 33 states have (on average 5.151515151515151) internal successors, (170), 33 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:58,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:05:58,888 INFO L93 Difference]: Finished difference Result 6656 states and 17917 transitions. [2021-06-05 08:05:58,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-06-05 08:05:58,888 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 5.151515151515151) internal successors, (170), 33 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 170 [2021-06-05 08:05:58,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:05:58,895 INFO L225 Difference]: With dead ends: 6656 [2021-06-05 08:05:58,895 INFO L226 Difference]: Without dead ends: 6386 [2021-06-05 08:05:58,896 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2034 ImplicationChecksByTransitivity, 1110.9ms TimeCoverageRelationStatistics Valid=2152, Invalid=5504, Unknown=0, NotChecked=0, Total=7656 [2021-06-05 08:05:58,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6386 states. [2021-06-05 08:05:58,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6386 to 5463. [2021-06-05 08:05:58,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5463 states, 5462 states have (on average 2.8200292932991577) internal successors, (15403), 5462 states have internal predecessors, (15403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:58,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5463 states to 5463 states and 15403 transitions. [2021-06-05 08:05:58,966 INFO L78 Accepts]: Start accepts. Automaton has 5463 states and 15403 transitions. Word has length 170 [2021-06-05 08:05:58,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:05:58,966 INFO L482 AbstractCegarLoop]: Abstraction has 5463 states and 15403 transitions. [2021-06-05 08:05:58,966 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 5.151515151515151) internal successors, (170), 33 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:58,966 INFO L276 IsEmpty]: Start isEmpty. Operand 5463 states and 15403 transitions. [2021-06-05 08:05:58,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-06-05 08:05:58,970 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:05:58,970 INFO L521 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:05:59,170 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable406,402 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:05:59,171 INFO L430 AbstractCegarLoop]: === Iteration 408 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:05:59,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:05:59,171 INFO L82 PathProgramCache]: Analyzing trace with hash -474348243, now seen corresponding path program 399 times [2021-06-05 08:05:59,171 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:05:59,171 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865285362] [2021-06-05 08:05:59,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:05:59,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:05:59,457 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:05:59,457 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:05:59,457 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865285362] [2021-06-05 08:05:59,457 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865285362] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:05:59,457 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [642317941] [2021-06-05 08:05:59,457 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 403 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 403 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:05:59,534 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2021-06-05 08:05:59,535 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:05:59,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 34 conjunts are in the unsatisfiable core [2021-06-05 08:05:59,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:05:59,723 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:05:59,724 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [642317941] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:05:59,724 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:05:59,724 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 34 [2021-06-05 08:05:59,724 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114745944] [2021-06-05 08:05:59,724 INFO L462 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-06-05 08:05:59,724 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:05:59,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-06-05 08:05:59,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=898, Unknown=0, NotChecked=0, Total=1122 [2021-06-05 08:05:59,725 INFO L87 Difference]: Start difference. First operand 5463 states and 15403 transitions. Second operand has 34 states, 34 states have (on average 5.0588235294117645) internal successors, (172), 34 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:01,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:06:01,124 INFO L93 Difference]: Finished difference Result 6741 states and 18207 transitions. [2021-06-05 08:06:01,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-06-05 08:06:01,124 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 5.0588235294117645) internal successors, (172), 34 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 170 [2021-06-05 08:06:01,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:06:01,131 INFO L225 Difference]: With dead ends: 6741 [2021-06-05 08:06:01,131 INFO L226 Difference]: Without dead ends: 6471 [2021-06-05 08:06:01,132 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2220 ImplicationChecksByTransitivity, 1366.2ms TimeCoverageRelationStatistics Valid=2331, Invalid=6041, Unknown=0, NotChecked=0, Total=8372 [2021-06-05 08:06:01,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6471 states. [2021-06-05 08:06:01,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6471 to 5538. [2021-06-05 08:06:01,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5538 states, 5537 states have (on average 2.826079104208055) internal successors, (15648), 5537 states have internal predecessors, (15648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:01,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5538 states to 5538 states and 15648 transitions. [2021-06-05 08:06:01,202 INFO L78 Accepts]: Start accepts. Automaton has 5538 states and 15648 transitions. Word has length 170 [2021-06-05 08:06:01,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:06:01,202 INFO L482 AbstractCegarLoop]: Abstraction has 5538 states and 15648 transitions. [2021-06-05 08:06:01,202 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 5.0588235294117645) internal successors, (172), 34 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:01,202 INFO L276 IsEmpty]: Start isEmpty. Operand 5538 states and 15648 transitions. [2021-06-05 08:06:01,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-06-05 08:06:01,206 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:06:01,206 INFO L521 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:06:01,406 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable407,403 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:06:01,407 INFO L430 AbstractCegarLoop]: === Iteration 409 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:06:01,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:06:01,407 INFO L82 PathProgramCache]: Analyzing trace with hash -1506995845, now seen corresponding path program 400 times [2021-06-05 08:06:01,407 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:06:01,407 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607234123] [2021-06-05 08:06:01,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:06:01,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:06:01,693 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:06:01,693 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:06:01,693 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607234123] [2021-06-05 08:06:01,693 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607234123] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:06:01,693 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [367098738] [2021-06-05 08:06:01,693 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 404 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 404 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:06:01,757 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 08:06:01,757 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:06:01,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 34 conjunts are in the unsatisfiable core [2021-06-05 08:06:01,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:06:01,929 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:06:01,929 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [367098738] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:06:01,929 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:06:01,929 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2021-06-05 08:06:01,930 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096517125] [2021-06-05 08:06:01,930 INFO L462 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-06-05 08:06:01,930 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:06:01,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-06-05 08:06:01,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=246, Invalid=810, Unknown=0, NotChecked=0, Total=1056 [2021-06-05 08:06:01,930 INFO L87 Difference]: Start difference. First operand 5538 states and 15648 transitions. Second operand has 33 states, 33 states have (on average 5.151515151515151) internal successors, (170), 33 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:03,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:06:03,114 INFO L93 Difference]: Finished difference Result 7508 states and 20381 transitions. [2021-06-05 08:06:03,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-06-05 08:06:03,114 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 5.151515151515151) internal successors, (170), 33 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 170 [2021-06-05 08:06:03,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:06:03,121 INFO L225 Difference]: With dead ends: 7508 [2021-06-05 08:06:03,121 INFO L226 Difference]: Without dead ends: 7238 [2021-06-05 08:06:03,121 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2169 ImplicationChecksByTransitivity, 1146.5ms TimeCoverageRelationStatistics Valid=2342, Invalid=5668, Unknown=0, NotChecked=0, Total=8010 [2021-06-05 08:06:03,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7238 states. [2021-06-05 08:06:03,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7238 to 5718. [2021-06-05 08:06:03,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5718 states, 5717 states have (on average 2.8348784327444463) internal successors, (16207), 5717 states have internal predecessors, (16207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:03,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5718 states to 5718 states and 16207 transitions. [2021-06-05 08:06:03,178 INFO L78 Accepts]: Start accepts. Automaton has 5718 states and 16207 transitions. Word has length 170 [2021-06-05 08:06:03,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:06:03,179 INFO L482 AbstractCegarLoop]: Abstraction has 5718 states and 16207 transitions. [2021-06-05 08:06:03,179 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 5.151515151515151) internal successors, (170), 33 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:03,179 INFO L276 IsEmpty]: Start isEmpty. Operand 5718 states and 16207 transitions. [2021-06-05 08:06:03,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-06-05 08:06:03,183 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:06:03,183 INFO L521 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:06:03,383 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable408,404 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:06:03,383 INFO L430 AbstractCegarLoop]: === Iteration 410 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:06:03,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:06:03,383 INFO L82 PathProgramCache]: Analyzing trace with hash -1484652595, now seen corresponding path program 401 times [2021-06-05 08:06:03,383 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:06:03,384 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874276837] [2021-06-05 08:06:03,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:06:03,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:06:03,668 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:06:03,668 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:06:03,669 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874276837] [2021-06-05 08:06:03,669 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874276837] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:06:03,669 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [655019536] [2021-06-05 08:06:03,669 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 405 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 405 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:06:03,735 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2021-06-05 08:06:03,735 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:06:03,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 34 conjunts are in the unsatisfiable core [2021-06-05 08:06:03,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:06:03,921 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:06:03,921 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [655019536] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:06:03,921 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:06:03,921 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 34 [2021-06-05 08:06:03,922 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639020877] [2021-06-05 08:06:03,922 INFO L462 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-06-05 08:06:03,922 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:06:03,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-06-05 08:06:03,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=249, Invalid=873, Unknown=0, NotChecked=0, Total=1122 [2021-06-05 08:06:03,922 INFO L87 Difference]: Start difference. First operand 5718 states and 16207 transitions. Second operand has 34 states, 34 states have (on average 5.0588235294117645) internal successors, (172), 34 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:05,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:06:05,340 INFO L93 Difference]: Finished difference Result 6995 states and 19081 transitions. [2021-06-05 08:06:05,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-06-05 08:06:05,341 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 5.0588235294117645) internal successors, (172), 34 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 170 [2021-06-05 08:06:05,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:06:05,348 INFO L225 Difference]: With dead ends: 6995 [2021-06-05 08:06:05,349 INFO L226 Difference]: Without dead ends: 6506 [2021-06-05 08:06:05,350 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2363 ImplicationChecksByTransitivity, 1383.4ms TimeCoverageRelationStatistics Valid=2531, Invalid=6211, Unknown=0, NotChecked=0, Total=8742 [2021-06-05 08:06:05,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6506 states. [2021-06-05 08:06:05,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6506 to 3713. [2021-06-05 08:06:05,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3713 states, 3712 states have (on average 2.741918103448276) internal successors, (10178), 3712 states have internal predecessors, (10178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:05,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3713 states to 3713 states and 10178 transitions. [2021-06-05 08:06:05,400 INFO L78 Accepts]: Start accepts. Automaton has 3713 states and 10178 transitions. Word has length 170 [2021-06-05 08:06:05,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:06:05,400 INFO L482 AbstractCegarLoop]: Abstraction has 3713 states and 10178 transitions. [2021-06-05 08:06:05,400 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 5.0588235294117645) internal successors, (172), 34 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:05,400 INFO L276 IsEmpty]: Start isEmpty. Operand 3713 states and 10178 transitions. [2021-06-05 08:06:05,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-06-05 08:06:05,403 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:06:05,403 INFO L521 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:06:05,603 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable409,405 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:06:05,604 INFO L430 AbstractCegarLoop]: === Iteration 411 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:06:05,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:06:05,604 INFO L82 PathProgramCache]: Analyzing trace with hash -435860238, now seen corresponding path program 402 times [2021-06-05 08:06:05,604 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:06:05,604 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915710372] [2021-06-05 08:06:05,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:06:05,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:06:05,995 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:06:05,995 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:06:05,995 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915710372] [2021-06-05 08:06:05,995 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915710372] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:06:05,995 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [466174330] [2021-06-05 08:06:05,996 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 406 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 406 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:06:06,073 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2021-06-05 08:06:06,074 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:06:06,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 35 conjunts are in the unsatisfiable core [2021-06-05 08:06:06,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:06:06,272 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:06:06,273 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [466174330] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:06:06,273 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:06:06,273 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 34 [2021-06-05 08:06:06,273 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615550667] [2021-06-05 08:06:06,273 INFO L462 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-06-05 08:06:06,273 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:06:06,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-06-05 08:06:06,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=249, Invalid=873, Unknown=0, NotChecked=0, Total=1122 [2021-06-05 08:06:06,273 INFO L87 Difference]: Start difference. First operand 3713 states and 10178 transitions. Second operand has 34 states, 34 states have (on average 5.147058823529412) internal successors, (175), 34 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:06,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:06:06,944 INFO L93 Difference]: Finished difference Result 5531 states and 14017 transitions. [2021-06-05 08:06:06,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-06-05 08:06:06,945 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 5.147058823529412) internal successors, (175), 34 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 175 [2021-06-05 08:06:06,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:06:06,950 INFO L225 Difference]: With dead ends: 5531 [2021-06-05 08:06:06,950 INFO L226 Difference]: Without dead ends: 5261 [2021-06-05 08:06:06,951 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 838 ImplicationChecksByTransitivity, 828.9ms TimeCoverageRelationStatistics Valid=1223, Invalid=3333, Unknown=0, NotChecked=0, Total=4556 [2021-06-05 08:06:06,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5261 states. [2021-06-05 08:06:06,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5261 to 3788. [2021-06-05 08:06:06,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3788 states, 3787 states have (on average 2.7470293108001056) internal successors, (10403), 3787 states have internal predecessors, (10403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:06,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3788 states to 3788 states and 10403 transitions. [2021-06-05 08:06:06,994 INFO L78 Accepts]: Start accepts. Automaton has 3788 states and 10403 transitions. Word has length 175 [2021-06-05 08:06:06,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:06:06,994 INFO L482 AbstractCegarLoop]: Abstraction has 3788 states and 10403 transitions. [2021-06-05 08:06:06,994 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 5.147058823529412) internal successors, (175), 34 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:06,994 INFO L276 IsEmpty]: Start isEmpty. Operand 3788 states and 10403 transitions. [2021-06-05 08:06:06,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-06-05 08:06:06,997 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:06:06,997 INFO L521 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:06:07,198 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 406 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable410 [2021-06-05 08:06:07,198 INFO L430 AbstractCegarLoop]: === Iteration 412 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:06:07,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:06:07,198 INFO L82 PathProgramCache]: Analyzing trace with hash 261855170, now seen corresponding path program 403 times [2021-06-05 08:06:07,198 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:06:07,198 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096830393] [2021-06-05 08:06:07,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:06:07,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:06:07,576 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:06:07,576 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:06:07,576 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096830393] [2021-06-05 08:06:07,576 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096830393] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:06:07,576 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [933572967] [2021-06-05 08:06:07,576 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 407 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 407 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:06:07,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:06:07,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 35 conjunts are in the unsatisfiable core [2021-06-05 08:06:07,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:06:07,851 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:06:07,851 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [933572967] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:06:07,851 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:06:07,851 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 35 [2021-06-05 08:06:07,851 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524996729] [2021-06-05 08:06:07,851 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-06-05 08:06:07,852 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:06:07,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-06-05 08:06:07,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=239, Invalid=951, Unknown=0, NotChecked=0, Total=1190 [2021-06-05 08:06:07,852 INFO L87 Difference]: Start difference. First operand 3788 states and 10403 transitions. Second operand has 35 states, 35 states have (on average 5.057142857142857) internal successors, (177), 35 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:08,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:06:08,560 INFO L93 Difference]: Finished difference Result 6251 states and 15532 transitions. [2021-06-05 08:06:08,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-05 08:06:08,560 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 5.057142857142857) internal successors, (177), 35 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 175 [2021-06-05 08:06:08,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:06:08,566 INFO L225 Difference]: With dead ends: 6251 [2021-06-05 08:06:08,566 INFO L226 Difference]: Without dead ends: 5981 [2021-06-05 08:06:08,566 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 961 ImplicationChecksByTransitivity, 869.9ms TimeCoverageRelationStatistics Valid=1291, Invalid=3679, Unknown=0, NotChecked=0, Total=4970 [2021-06-05 08:06:08,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5981 states. [2021-06-05 08:06:08,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5981 to 3863. [2021-06-05 08:06:08,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3863 states, 3862 states have (on average 2.7519419989642673) internal successors, (10628), 3862 states have internal predecessors, (10628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:08,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3863 states to 3863 states and 10628 transitions. [2021-06-05 08:06:08,632 INFO L78 Accepts]: Start accepts. Automaton has 3863 states and 10628 transitions. Word has length 175 [2021-06-05 08:06:08,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:06:08,633 INFO L482 AbstractCegarLoop]: Abstraction has 3863 states and 10628 transitions. [2021-06-05 08:06:08,633 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 5.057142857142857) internal successors, (177), 35 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:08,633 INFO L276 IsEmpty]: Start isEmpty. Operand 3863 states and 10628 transitions. [2021-06-05 08:06:08,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-06-05 08:06:08,636 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:06:08,636 INFO L521 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:06:08,836 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 407 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable411 [2021-06-05 08:06:08,836 INFO L430 AbstractCegarLoop]: === Iteration 413 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:06:08,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:06:08,837 INFO L82 PathProgramCache]: Analyzing trace with hash -1458027472, now seen corresponding path program 404 times [2021-06-05 08:06:08,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:06:08,837 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303333188] [2021-06-05 08:06:08,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:06:08,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:06:09,188 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:06:09,188 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:06:09,188 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303333188] [2021-06-05 08:06:09,188 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303333188] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:06:09,188 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [626556080] [2021-06-05 08:06:09,188 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 408 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 408 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:06:09,254 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 08:06:09,254 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:06:09,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 35 conjunts are in the unsatisfiable core [2021-06-05 08:06:09,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:06:09,451 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:06:09,451 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [626556080] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:06:09,452 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:06:09,452 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 34 [2021-06-05 08:06:09,452 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928684258] [2021-06-05 08:06:09,452 INFO L462 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-06-05 08:06:09,452 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:06:09,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-06-05 08:06:09,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=896, Unknown=0, NotChecked=0, Total=1122 [2021-06-05 08:06:09,452 INFO L87 Difference]: Start difference. First operand 3863 states and 10628 transitions. Second operand has 34 states, 34 states have (on average 5.147058823529412) internal successors, (175), 34 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:10,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:06:10,136 INFO L93 Difference]: Finished difference Result 6281 states and 15667 transitions. [2021-06-05 08:06:10,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-05 08:06:10,136 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 5.147058823529412) internal successors, (175), 34 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 175 [2021-06-05 08:06:10,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:06:10,142 INFO L225 Difference]: With dead ends: 6281 [2021-06-05 08:06:10,142 INFO L226 Difference]: Without dead ends: 6011 [2021-06-05 08:06:10,143 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1034 ImplicationChecksByTransitivity, 819.0ms TimeCoverageRelationStatistics Valid=1281, Invalid=3689, Unknown=0, NotChecked=0, Total=4970 [2021-06-05 08:06:10,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6011 states. [2021-06-05 08:06:10,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6011 to 3938. [2021-06-05 08:06:10,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3938 states, 3937 states have (on average 2.7566675133350267) internal successors, (10853), 3937 states have internal predecessors, (10853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:10,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3938 states to 3938 states and 10853 transitions. [2021-06-05 08:06:10,192 INFO L78 Accepts]: Start accepts. Automaton has 3938 states and 10853 transitions. Word has length 175 [2021-06-05 08:06:10,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:06:10,192 INFO L482 AbstractCegarLoop]: Abstraction has 3938 states and 10853 transitions. [2021-06-05 08:06:10,192 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 5.147058823529412) internal successors, (175), 34 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:10,192 INFO L276 IsEmpty]: Start isEmpty. Operand 3938 states and 10853 transitions. [2021-06-05 08:06:10,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-06-05 08:06:10,195 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:06:10,195 INFO L521 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:06:10,395 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable412,408 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:06:10,396 INFO L430 AbstractCegarLoop]: === Iteration 414 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:06:10,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:06:10,396 INFO L82 PathProgramCache]: Analyzing trace with hash -1959341312, now seen corresponding path program 405 times [2021-06-05 08:06:10,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:06:10,396 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407654983] [2021-06-05 08:06:10,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:06:10,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:06:10,761 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:06:10,761 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:06:10,761 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407654983] [2021-06-05 08:06:10,761 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407654983] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:06:10,761 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [304892481] [2021-06-05 08:06:10,761 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 409 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 409 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:06:10,840 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2021-06-05 08:06:10,840 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:06:10,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 35 conjunts are in the unsatisfiable core [2021-06-05 08:06:10,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:06:11,055 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:06:11,056 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [304892481] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:06:11,056 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:06:11,056 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 35 [2021-06-05 08:06:11,056 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560178030] [2021-06-05 08:06:11,056 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-06-05 08:06:11,056 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:06:11,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-06-05 08:06:11,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=973, Unknown=0, NotChecked=0, Total=1190 [2021-06-05 08:06:11,057 INFO L87 Difference]: Start difference. First operand 3938 states and 10853 transitions. Second operand has 35 states, 35 states have (on average 5.057142857142857) internal successors, (177), 35 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:11,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:06:11,855 INFO L93 Difference]: Finished difference Result 6306 states and 15792 transitions. [2021-06-05 08:06:11,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-06-05 08:06:11,855 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 5.057142857142857) internal successors, (177), 35 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 175 [2021-06-05 08:06:11,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:06:11,860 INFO L225 Difference]: With dead ends: 6306 [2021-06-05 08:06:11,860 INFO L226 Difference]: Without dead ends: 6036 [2021-06-05 08:06:11,860 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1056 ImplicationChecksByTransitivity, 902.1ms TimeCoverageRelationStatistics Valid=1303, Invalid=3953, Unknown=0, NotChecked=0, Total=5256 [2021-06-05 08:06:11,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6036 states. [2021-06-05 08:06:11,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6036 to 4013. [2021-06-05 08:06:11,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4013 states, 4012 states have (on average 2.7612163509471586) internal successors, (11078), 4012 states have internal predecessors, (11078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:11,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4013 states to 4013 states and 11078 transitions. [2021-06-05 08:06:11,908 INFO L78 Accepts]: Start accepts. Automaton has 4013 states and 11078 transitions. Word has length 175 [2021-06-05 08:06:11,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:06:11,908 INFO L482 AbstractCegarLoop]: Abstraction has 4013 states and 11078 transitions. [2021-06-05 08:06:11,908 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 5.057142857142857) internal successors, (177), 35 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:11,908 INFO L276 IsEmpty]: Start isEmpty. Operand 4013 states and 11078 transitions. [2021-06-05 08:06:11,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-06-05 08:06:11,911 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:06:11,911 INFO L521 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:06:12,111 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 409 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable413 [2021-06-05 08:06:12,112 INFO L430 AbstractCegarLoop]: === Iteration 415 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:06:12,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:06:12,112 INFO L82 PathProgramCache]: Analyzing trace with hash -1482845970, now seen corresponding path program 406 times [2021-06-05 08:06:12,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:06:12,112 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385044678] [2021-06-05 08:06:12,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:06:12,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:06:12,452 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:06:12,452 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:06:12,452 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385044678] [2021-06-05 08:06:12,452 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385044678] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:06:12,452 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2097594374] [2021-06-05 08:06:12,452 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 410 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 410 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:06:12,519 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 08:06:12,519 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:06:12,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 35 conjunts are in the unsatisfiable core [2021-06-05 08:06:12,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:06:12,716 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:06:12,716 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2097594374] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:06:12,716 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:06:12,716 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 34 [2021-06-05 08:06:12,716 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046505423] [2021-06-05 08:06:12,716 INFO L462 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-06-05 08:06:12,716 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:06:12,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-06-05 08:06:12,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=915, Unknown=0, NotChecked=0, Total=1122 [2021-06-05 08:06:12,717 INFO L87 Difference]: Start difference. First operand 4013 states and 11078 transitions. Second operand has 34 states, 34 states have (on average 5.147058823529412) internal successors, (175), 34 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:13,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:06:13,461 INFO L93 Difference]: Finished difference Result 6331 states and 15917 transitions. [2021-06-05 08:06:13,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-05 08:06:13,461 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 5.147058823529412) internal successors, (175), 34 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 175 [2021-06-05 08:06:13,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:06:13,467 INFO L225 Difference]: With dead ends: 6331 [2021-06-05 08:06:13,467 INFO L226 Difference]: Without dead ends: 6061 [2021-06-05 08:06:13,467 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1139 ImplicationChecksByTransitivity, 836.5ms TimeCoverageRelationStatistics Valid=1307, Invalid=3949, Unknown=0, NotChecked=0, Total=5256 [2021-06-05 08:06:13,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6061 states. [2021-06-05 08:06:13,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6061 to 4088. [2021-06-05 08:06:13,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4088 states, 4087 states have (on average 2.7655982383166138) internal successors, (11303), 4087 states have internal predecessors, (11303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:13,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4088 states to 4088 states and 11303 transitions. [2021-06-05 08:06:13,519 INFO L78 Accepts]: Start accepts. Automaton has 4088 states and 11303 transitions. Word has length 175 [2021-06-05 08:06:13,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:06:13,519 INFO L482 AbstractCegarLoop]: Abstraction has 4088 states and 11303 transitions. [2021-06-05 08:06:13,519 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 5.147058823529412) internal successors, (175), 34 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:13,519 INFO L276 IsEmpty]: Start isEmpty. Operand 4088 states and 11303 transitions. [2021-06-05 08:06:13,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-06-05 08:06:13,522 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:06:13,522 INFO L521 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:06:13,722 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 410 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable414 [2021-06-05 08:06:13,723 INFO L430 AbstractCegarLoop]: === Iteration 416 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:06:13,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:06:13,723 INFO L82 PathProgramCache]: Analyzing trace with hash -16161858, now seen corresponding path program 407 times [2021-06-05 08:06:13,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:06:13,723 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686665511] [2021-06-05 08:06:13,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:06:13,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:06:14,079 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:06:14,080 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:06:14,080 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686665511] [2021-06-05 08:06:14,080 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686665511] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:06:14,080 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [539180011] [2021-06-05 08:06:14,080 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 411 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 411 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:06:14,148 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2021-06-05 08:06:14,148 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:06:14,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 35 conjunts are in the unsatisfiable core [2021-06-05 08:06:14,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:06:14,384 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:06:14,385 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [539180011] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:06:14,385 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:06:14,385 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 35 [2021-06-05 08:06:14,385 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532558757] [2021-06-05 08:06:14,385 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-06-05 08:06:14,385 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:06:14,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-06-05 08:06:14,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=991, Unknown=0, NotChecked=0, Total=1190 [2021-06-05 08:06:14,385 INFO L87 Difference]: Start difference. First operand 4088 states and 11303 transitions. Second operand has 35 states, 35 states have (on average 5.057142857142857) internal successors, (177), 35 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:15,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:06:15,216 INFO L93 Difference]: Finished difference Result 6356 states and 16042 transitions. [2021-06-05 08:06:15,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-06-05 08:06:15,216 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 5.057142857142857) internal successors, (177), 35 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 175 [2021-06-05 08:06:15,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:06:15,222 INFO L225 Difference]: With dead ends: 6356 [2021-06-05 08:06:15,222 INFO L226 Difference]: Without dead ends: 6086 [2021-06-05 08:06:15,222 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1164 ImplicationChecksByTransitivity, 940.1ms TimeCoverageRelationStatistics Valid=1331, Invalid=4219, Unknown=0, NotChecked=0, Total=5550 [2021-06-05 08:06:15,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6086 states. [2021-06-05 08:06:15,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6086 to 4163. [2021-06-05 08:06:15,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4163 states, 4162 states have (on average 2.7698222008649687) internal successors, (11528), 4162 states have internal predecessors, (11528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:15,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4163 states to 4163 states and 11528 transitions. [2021-06-05 08:06:15,274 INFO L78 Accepts]: Start accepts. Automaton has 4163 states and 11528 transitions. Word has length 175 [2021-06-05 08:06:15,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:06:15,274 INFO L482 AbstractCegarLoop]: Abstraction has 4163 states and 11528 transitions. [2021-06-05 08:06:15,274 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 5.057142857142857) internal successors, (177), 35 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:15,274 INFO L276 IsEmpty]: Start isEmpty. Operand 4163 states and 11528 transitions. [2021-06-05 08:06:15,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-06-05 08:06:15,278 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:06:15,278 INFO L521 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:06:15,492 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 411 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable415 [2021-06-05 08:06:15,493 INFO L430 AbstractCegarLoop]: === Iteration 417 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:06:15,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:06:15,493 INFO L82 PathProgramCache]: Analyzing trace with hash -151383252, now seen corresponding path program 408 times [2021-06-05 08:06:15,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:06:15,493 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113593223] [2021-06-05 08:06:15,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:06:15,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:06:15,825 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:06:15,825 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:06:15,826 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113593223] [2021-06-05 08:06:15,826 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113593223] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:06:15,826 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [931627606] [2021-06-05 08:06:15,826 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 412 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 412 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:06:15,903 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2021-06-05 08:06:15,903 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:06:15,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 35 conjunts are in the unsatisfiable core [2021-06-05 08:06:15,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:06:16,097 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:06:16,098 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [931627606] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:06:16,098 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:06:16,098 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 34 [2021-06-05 08:06:16,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312523513] [2021-06-05 08:06:16,098 INFO L462 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-06-05 08:06:16,098 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:06:16,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-06-05 08:06:16,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=930, Unknown=0, NotChecked=0, Total=1122 [2021-06-05 08:06:16,098 INFO L87 Difference]: Start difference. First operand 4163 states and 11528 transitions. Second operand has 34 states, 34 states have (on average 5.147058823529412) internal successors, (175), 34 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:16,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:06:16,915 INFO L93 Difference]: Finished difference Result 6381 states and 16167 transitions. [2021-06-05 08:06:16,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-06-05 08:06:16,916 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 5.147058823529412) internal successors, (175), 34 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 175 [2021-06-05 08:06:16,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:06:16,922 INFO L225 Difference]: With dead ends: 6381 [2021-06-05 08:06:16,922 INFO L226 Difference]: Without dead ends: 6111 [2021-06-05 08:06:16,923 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1252 ImplicationChecksByTransitivity, 866.2ms TimeCoverageRelationStatistics Valid=1349, Invalid=4201, Unknown=0, NotChecked=0, Total=5550 [2021-06-05 08:06:16,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6111 states. [2021-06-05 08:06:16,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6111 to 4238. [2021-06-05 08:06:16,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4238 states, 4237 states have (on average 2.773896624970498) internal successors, (11753), 4237 states have internal predecessors, (11753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:16,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4238 states to 4238 states and 11753 transitions. [2021-06-05 08:06:16,975 INFO L78 Accepts]: Start accepts. Automaton has 4238 states and 11753 transitions. Word has length 175 [2021-06-05 08:06:16,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:06:16,975 INFO L482 AbstractCegarLoop]: Abstraction has 4238 states and 11753 transitions. [2021-06-05 08:06:16,975 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 5.147058823529412) internal successors, (175), 34 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:16,975 INFO L276 IsEmpty]: Start isEmpty. Operand 4238 states and 11753 transitions. [2021-06-05 08:06:16,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-06-05 08:06:16,978 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:06:16,979 INFO L521 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:06:17,179 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 412 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable416 [2021-06-05 08:06:17,179 INFO L430 AbstractCegarLoop]: === Iteration 418 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:06:17,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:06:17,179 INFO L82 PathProgramCache]: Analyzing trace with hash -1028118020, now seen corresponding path program 409 times [2021-06-05 08:06:17,179 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:06:17,180 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165508203] [2021-06-05 08:06:17,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:06:17,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:06:17,547 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:06:17,548 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:06:17,548 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165508203] [2021-06-05 08:06:17,548 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165508203] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:06:17,548 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1687777630] [2021-06-05 08:06:17,548 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 413 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 413 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:06:17,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:06:17,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 35 conjunts are in the unsatisfiable core [2021-06-05 08:06:17,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:06:17,822 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:06:17,822 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1687777630] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:06:17,822 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:06:17,822 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 35 [2021-06-05 08:06:17,822 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813546219] [2021-06-05 08:06:17,822 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-06-05 08:06:17,822 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:06:17,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-06-05 08:06:17,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=1005, Unknown=0, NotChecked=0, Total=1190 [2021-06-05 08:06:17,823 INFO L87 Difference]: Start difference. First operand 4238 states and 11753 transitions. Second operand has 35 states, 35 states have (on average 5.057142857142857) internal successors, (177), 35 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:18,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:06:18,718 INFO L93 Difference]: Finished difference Result 6406 states and 16292 transitions. [2021-06-05 08:06:18,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-06-05 08:06:18,718 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 5.057142857142857) internal successors, (177), 35 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 175 [2021-06-05 08:06:18,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:06:18,724 INFO L225 Difference]: With dead ends: 6406 [2021-06-05 08:06:18,724 INFO L226 Difference]: Without dead ends: 6136 [2021-06-05 08:06:18,725 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1280 ImplicationChecksByTransitivity, 978.5ms TimeCoverageRelationStatistics Valid=1375, Invalid=4477, Unknown=0, NotChecked=0, Total=5852 [2021-06-05 08:06:18,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6136 states. [2021-06-05 08:06:18,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6136 to 4313. [2021-06-05 08:06:18,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4313 states, 4312 states have (on average 2.777829313543599) internal successors, (11978), 4312 states have internal predecessors, (11978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:18,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4313 states to 4313 states and 11978 transitions. [2021-06-05 08:06:18,776 INFO L78 Accepts]: Start accepts. Automaton has 4313 states and 11978 transitions. Word has length 175 [2021-06-05 08:06:18,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:06:18,777 INFO L482 AbstractCegarLoop]: Abstraction has 4313 states and 11978 transitions. [2021-06-05 08:06:18,777 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 5.057142857142857) internal successors, (177), 35 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:18,777 INFO L276 IsEmpty]: Start isEmpty. Operand 4313 states and 11978 transitions. [2021-06-05 08:06:18,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-06-05 08:06:18,780 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:06:18,780 INFO L521 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:06:18,980 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable417,413 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:06:18,981 INFO L430 AbstractCegarLoop]: === Iteration 419 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:06:18,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:06:18,981 INFO L82 PathProgramCache]: Analyzing trace with hash 1529522922, now seen corresponding path program 410 times [2021-06-05 08:06:18,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:06:18,981 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073685598] [2021-06-05 08:06:18,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:06:18,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:06:19,301 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:06:19,302 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:06:19,302 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073685598] [2021-06-05 08:06:19,302 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073685598] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:06:19,302 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2008261902] [2021-06-05 08:06:19,302 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 414 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 414 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:06:19,366 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 08:06:19,366 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:06:19,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 35 conjunts are in the unsatisfiable core [2021-06-05 08:06:19,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:06:19,559 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:06:19,559 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2008261902] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:06:19,559 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:06:19,559 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 34 [2021-06-05 08:06:19,559 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429487670] [2021-06-05 08:06:19,559 INFO L462 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-06-05 08:06:19,559 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:06:19,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-06-05 08:06:19,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=941, Unknown=0, NotChecked=0, Total=1122 [2021-06-05 08:06:19,560 INFO L87 Difference]: Start difference. First operand 4313 states and 11978 transitions. Second operand has 34 states, 34 states have (on average 5.147058823529412) internal successors, (175), 34 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:20,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:06:20,419 INFO L93 Difference]: Finished difference Result 6431 states and 16417 transitions. [2021-06-05 08:06:20,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-06-05 08:06:20,419 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 5.147058823529412) internal successors, (175), 34 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 175 [2021-06-05 08:06:20,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:06:20,425 INFO L225 Difference]: With dead ends: 6431 [2021-06-05 08:06:20,425 INFO L226 Difference]: Without dead ends: 6161 [2021-06-05 08:06:20,426 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1369 ImplicationChecksByTransitivity, 898.4ms TimeCoverageRelationStatistics Valid=1407, Invalid=4445, Unknown=0, NotChecked=0, Total=5852 [2021-06-05 08:06:20,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6161 states. [2021-06-05 08:06:20,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6161 to 4388. [2021-06-05 08:06:20,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4388 states, 4387 states have (on average 2.7816275359015274) internal successors, (12203), 4387 states have internal predecessors, (12203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:20,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4388 states to 4388 states and 12203 transitions. [2021-06-05 08:06:20,479 INFO L78 Accepts]: Start accepts. Automaton has 4388 states and 12203 transitions. Word has length 175 [2021-06-05 08:06:20,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:06:20,479 INFO L482 AbstractCegarLoop]: Abstraction has 4388 states and 12203 transitions. [2021-06-05 08:06:20,479 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 5.147058823529412) internal successors, (175), 34 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:20,479 INFO L276 IsEmpty]: Start isEmpty. Operand 4388 states and 12203 transitions. [2021-06-05 08:06:20,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-06-05 08:06:20,482 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:06:20,482 INFO L521 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:06:20,683 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 414 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable418 [2021-06-05 08:06:20,683 INFO L430 AbstractCegarLoop]: === Iteration 420 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:06:20,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:06:20,683 INFO L82 PathProgramCache]: Analyzing trace with hash -1400896070, now seen corresponding path program 411 times [2021-06-05 08:06:20,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:06:20,683 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115096501] [2021-06-05 08:06:20,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:06:20,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:06:21,016 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:06:21,016 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:06:21,016 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115096501] [2021-06-05 08:06:21,016 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115096501] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:06:21,016 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [523538462] [2021-06-05 08:06:21,016 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 415 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 415 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:06:21,094 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2021-06-05 08:06:21,095 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:06:21,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 35 conjunts are in the unsatisfiable core [2021-06-05 08:06:21,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:06:21,304 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:06:21,305 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [523538462] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:06:21,305 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:06:21,305 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 35 [2021-06-05 08:06:21,305 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922027663] [2021-06-05 08:06:21,305 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-06-05 08:06:21,305 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:06:21,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-06-05 08:06:21,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=1015, Unknown=0, NotChecked=0, Total=1190 [2021-06-05 08:06:21,306 INFO L87 Difference]: Start difference. First operand 4388 states and 12203 transitions. Second operand has 35 states, 35 states have (on average 5.057142857142857) internal successors, (177), 35 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:22,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:06:22,237 INFO L93 Difference]: Finished difference Result 6456 states and 16542 transitions. [2021-06-05 08:06:22,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-06-05 08:06:22,238 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 5.057142857142857) internal successors, (177), 35 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 175 [2021-06-05 08:06:22,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:06:22,243 INFO L225 Difference]: With dead ends: 6456 [2021-06-05 08:06:22,244 INFO L226 Difference]: Without dead ends: 6186 [2021-06-05 08:06:22,244 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1400 ImplicationChecksByTransitivity, 1009.0ms TimeCoverageRelationStatistics Valid=1435, Invalid=4727, Unknown=0, NotChecked=0, Total=6162 [2021-06-05 08:06:22,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6186 states. [2021-06-05 08:06:22,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6186 to 4463. [2021-06-05 08:06:22,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4463 states, 4462 states have (on average 2.7852980726131777) internal successors, (12428), 4462 states have internal predecessors, (12428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:22,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4463 states to 4463 states and 12428 transitions. [2021-06-05 08:06:22,294 INFO L78 Accepts]: Start accepts. Automaton has 4463 states and 12428 transitions. Word has length 175 [2021-06-05 08:06:22,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:06:22,295 INFO L482 AbstractCegarLoop]: Abstraction has 4463 states and 12428 transitions. [2021-06-05 08:06:22,295 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 5.057142857142857) internal successors, (177), 35 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:22,295 INFO L276 IsEmpty]: Start isEmpty. Operand 4463 states and 12428 transitions. [2021-06-05 08:06:22,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-06-05 08:06:22,298 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:06:22,298 INFO L521 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:06:22,498 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 415 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable419 [2021-06-05 08:06:22,499 INFO L430 AbstractCegarLoop]: === Iteration 421 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:06:22,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:06:22,499 INFO L82 PathProgramCache]: Analyzing trace with hash 616839208, now seen corresponding path program 412 times [2021-06-05 08:06:22,499 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:06:22,499 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034336200] [2021-06-05 08:06:22,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:06:22,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:06:22,839 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:06:22,840 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:06:22,840 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034336200] [2021-06-05 08:06:22,840 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034336200] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:06:22,840 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1125358108] [2021-06-05 08:06:22,840 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 416 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 416 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:06:22,904 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 08:06:22,904 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:06:22,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 35 conjunts are in the unsatisfiable core [2021-06-05 08:06:22,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:06:23,093 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:06:23,093 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1125358108] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:06:23,093 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:06:23,093 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 34 [2021-06-05 08:06:23,093 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628832889] [2021-06-05 08:06:23,094 INFO L462 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-06-05 08:06:23,094 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:06:23,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-06-05 08:06:23,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=948, Unknown=0, NotChecked=0, Total=1122 [2021-06-05 08:06:23,094 INFO L87 Difference]: Start difference. First operand 4463 states and 12428 transitions. Second operand has 34 states, 34 states have (on average 5.147058823529412) internal successors, (175), 34 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:23,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:06:23,955 INFO L93 Difference]: Finished difference Result 6481 states and 16667 transitions. [2021-06-05 08:06:23,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-06-05 08:06:23,955 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 5.147058823529412) internal successors, (175), 34 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 175 [2021-06-05 08:06:23,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:06:23,962 INFO L225 Difference]: With dead ends: 6481 [2021-06-05 08:06:23,962 INFO L226 Difference]: Without dead ends: 6211 [2021-06-05 08:06:23,963 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1490 ImplicationChecksByTransitivity, 934.6ms TimeCoverageRelationStatistics Valid=1481, Invalid=4681, Unknown=0, NotChecked=0, Total=6162 [2021-06-05 08:06:23,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6211 states. [2021-06-05 08:06:24,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6211 to 4538. [2021-06-05 08:06:24,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4538 states, 4537 states have (on average 2.7888472558959667) internal successors, (12653), 4537 states have internal predecessors, (12653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:24,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4538 states to 4538 states and 12653 transitions. [2021-06-05 08:06:24,016 INFO L78 Accepts]: Start accepts. Automaton has 4538 states and 12653 transitions. Word has length 175 [2021-06-05 08:06:24,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:06:24,016 INFO L482 AbstractCegarLoop]: Abstraction has 4538 states and 12653 transitions. [2021-06-05 08:06:24,016 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 5.147058823529412) internal successors, (175), 34 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:24,016 INFO L276 IsEmpty]: Start isEmpty. Operand 4538 states and 12653 transitions. [2021-06-05 08:06:24,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-06-05 08:06:24,019 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:06:24,020 INFO L521 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:06:24,220 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 416 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable420 [2021-06-05 08:06:24,220 INFO L430 AbstractCegarLoop]: === Iteration 422 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:06:24,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:06:24,220 INFO L82 PathProgramCache]: Analyzing trace with hash -281684232, now seen corresponding path program 413 times [2021-06-05 08:06:24,220 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:06:24,220 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596298141] [2021-06-05 08:06:24,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:06:24,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:06:24,545 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:06:24,545 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:06:24,545 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596298141] [2021-06-05 08:06:24,545 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596298141] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:06:24,545 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1171974618] [2021-06-05 08:06:24,545 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 417 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 417 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:06:24,612 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2021-06-05 08:06:24,613 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:06:24,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 35 conjunts are in the unsatisfiable core [2021-06-05 08:06:24,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:06:24,821 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:06:24,821 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1171974618] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:06:24,821 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:06:24,821 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 35 [2021-06-05 08:06:24,821 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146626153] [2021-06-05 08:06:24,821 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-06-05 08:06:24,821 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:06:24,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-06-05 08:06:24,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=1021, Unknown=0, NotChecked=0, Total=1190 [2021-06-05 08:06:24,822 INFO L87 Difference]: Start difference. First operand 4538 states and 12653 transitions. Second operand has 35 states, 35 states have (on average 5.057142857142857) internal successors, (177), 35 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:25,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:06:25,935 INFO L93 Difference]: Finished difference Result 6506 states and 16792 transitions. [2021-06-05 08:06:25,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-06-05 08:06:25,935 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 5.057142857142857) internal successors, (177), 35 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 175 [2021-06-05 08:06:25,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:06:25,941 INFO L225 Difference]: With dead ends: 6506 [2021-06-05 08:06:25,941 INFO L226 Difference]: Without dead ends: 6236 [2021-06-05 08:06:25,941 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1524 ImplicationChecksByTransitivity, 1057.7ms TimeCoverageRelationStatistics Valid=1511, Invalid=4969, Unknown=0, NotChecked=0, Total=6480 [2021-06-05 08:06:25,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6236 states. [2021-06-05 08:06:25,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6236 to 4613. [2021-06-05 08:06:25,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4613 states, 4612 states have (on average 2.7922810060711187) internal successors, (12878), 4612 states have internal predecessors, (12878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:25,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4613 states to 4613 states and 12878 transitions. [2021-06-05 08:06:25,994 INFO L78 Accepts]: Start accepts. Automaton has 4613 states and 12878 transitions. Word has length 175 [2021-06-05 08:06:25,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:06:25,994 INFO L482 AbstractCegarLoop]: Abstraction has 4613 states and 12878 transitions. [2021-06-05 08:06:25,994 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 5.057142857142857) internal successors, (177), 35 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:25,994 INFO L276 IsEmpty]: Start isEmpty. Operand 4613 states and 12878 transitions. [2021-06-05 08:06:25,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-06-05 08:06:25,998 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:06:25,998 INFO L521 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:06:26,198 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 417 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable421 [2021-06-05 08:06:26,198 INFO L430 AbstractCegarLoop]: === Iteration 423 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:06:26,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:06:26,199 INFO L82 PathProgramCache]: Analyzing trace with hash -1896637722, now seen corresponding path program 414 times [2021-06-05 08:06:26,199 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:06:26,199 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083041075] [2021-06-05 08:06:26,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:06:26,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:06:26,534 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:06:26,535 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:06:26,535 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083041075] [2021-06-05 08:06:26,535 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083041075] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:06:26,535 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1560371774] [2021-06-05 08:06:26,535 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 418 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 418 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:06:26,612 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2021-06-05 08:06:26,613 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:06:26,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 35 conjunts are in the unsatisfiable core [2021-06-05 08:06:26,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:06:26,802 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:06:26,802 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1560371774] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:06:26,802 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:06:26,802 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 34 [2021-06-05 08:06:26,802 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999433386] [2021-06-05 08:06:26,802 INFO L462 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-06-05 08:06:26,802 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:06:26,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-06-05 08:06:26,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=951, Unknown=0, NotChecked=0, Total=1122 [2021-06-05 08:06:26,803 INFO L87 Difference]: Start difference. First operand 4613 states and 12878 transitions. Second operand has 34 states, 34 states have (on average 5.147058823529412) internal successors, (175), 34 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:27,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:06:27,692 INFO L93 Difference]: Finished difference Result 6531 states and 16917 transitions. [2021-06-05 08:06:27,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-06-05 08:06:27,692 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 5.147058823529412) internal successors, (175), 34 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 175 [2021-06-05 08:06:27,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:06:27,699 INFO L225 Difference]: With dead ends: 6531 [2021-06-05 08:06:27,699 INFO L226 Difference]: Without dead ends: 6261 [2021-06-05 08:06:27,700 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1615 ImplicationChecksByTransitivity, 952.5ms TimeCoverageRelationStatistics Valid=1571, Invalid=4909, Unknown=0, NotChecked=0, Total=6480 [2021-06-05 08:06:27,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6261 states. [2021-06-05 08:06:27,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6261 to 4688. [2021-06-05 08:06:27,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4688 states, 4687 states have (on average 2.795604864518882) internal successors, (13103), 4687 states have internal predecessors, (13103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:27,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4688 states to 4688 states and 13103 transitions. [2021-06-05 08:06:27,757 INFO L78 Accepts]: Start accepts. Automaton has 4688 states and 13103 transitions. Word has length 175 [2021-06-05 08:06:27,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:06:27,757 INFO L482 AbstractCegarLoop]: Abstraction has 4688 states and 13103 transitions. [2021-06-05 08:06:27,757 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 5.147058823529412) internal successors, (175), 34 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:27,757 INFO L276 IsEmpty]: Start isEmpty. Operand 4688 states and 13103 transitions. [2021-06-05 08:06:27,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-06-05 08:06:27,761 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:06:27,761 INFO L521 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:06:27,961 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable422,418 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:06:27,962 INFO L430 AbstractCegarLoop]: === Iteration 424 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:06:27,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:06:27,962 INFO L82 PathProgramCache]: Analyzing trace with hash 2017885622, now seen corresponding path program 415 times [2021-06-05 08:06:27,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:06:27,962 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109971033] [2021-06-05 08:06:27,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:06:27,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:06:28,282 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:06:28,283 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:06:28,283 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109971033] [2021-06-05 08:06:28,283 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109971033] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:06:28,283 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1450475317] [2021-06-05 08:06:28,283 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 419 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 419 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:06:28,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:06:28,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 35 conjunts are in the unsatisfiable core [2021-06-05 08:06:28,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:06:28,580 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:06:28,580 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1450475317] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:06:28,581 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:06:28,581 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 35 [2021-06-05 08:06:28,581 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280030205] [2021-06-05 08:06:28,581 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-06-05 08:06:28,581 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:06:28,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-06-05 08:06:28,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=1023, Unknown=0, NotChecked=0, Total=1190 [2021-06-05 08:06:28,581 INFO L87 Difference]: Start difference. First operand 4688 states and 13103 transitions. Second operand has 35 states, 35 states have (on average 5.057142857142857) internal successors, (177), 35 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:29,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:06:29,659 INFO L93 Difference]: Finished difference Result 6556 states and 17042 transitions. [2021-06-05 08:06:29,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-06-05 08:06:29,659 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 5.057142857142857) internal successors, (177), 35 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 175 [2021-06-05 08:06:29,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:06:29,666 INFO L225 Difference]: With dead ends: 6556 [2021-06-05 08:06:29,666 INFO L226 Difference]: Without dead ends: 6286 [2021-06-05 08:06:29,666 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1652 ImplicationChecksByTransitivity, 1096.1ms TimeCoverageRelationStatistics Valid=1603, Invalid=5203, Unknown=0, NotChecked=0, Total=6806 [2021-06-05 08:06:29,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6286 states. [2021-06-05 08:06:29,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6286 to 4763. [2021-06-05 08:06:29,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4763 states, 4762 states have (on average 2.7988240235195296) internal successors, (13328), 4762 states have internal predecessors, (13328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:29,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4763 states to 4763 states and 13328 transitions. [2021-06-05 08:06:29,728 INFO L78 Accepts]: Start accepts. Automaton has 4763 states and 13328 transitions. Word has length 175 [2021-06-05 08:06:29,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:06:29,728 INFO L482 AbstractCegarLoop]: Abstraction has 4763 states and 13328 transitions. [2021-06-05 08:06:29,728 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 5.057142857142857) internal successors, (177), 35 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:29,728 INFO L276 IsEmpty]: Start isEmpty. Operand 4763 states and 13328 transitions. [2021-06-05 08:06:29,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-06-05 08:06:29,732 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:06:29,732 INFO L521 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:06:29,932 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 419 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable423 [2021-06-05 08:06:29,933 INFO L430 AbstractCegarLoop]: === Iteration 425 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:06:29,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:06:29,933 INFO L82 PathProgramCache]: Analyzing trace with hash -1652706524, now seen corresponding path program 416 times [2021-06-05 08:06:29,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:06:29,933 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048295500] [2021-06-05 08:06:29,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:06:29,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:06:30,237 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:06:30,237 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:06:30,237 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048295500] [2021-06-05 08:06:30,237 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048295500] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:06:30,237 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [864478985] [2021-06-05 08:06:30,237 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 420 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 420 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:06:30,302 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 08:06:30,302 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:06:30,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 35 conjunts are in the unsatisfiable core [2021-06-05 08:06:30,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:06:30,489 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:06:30,490 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [864478985] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:06:30,490 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:06:30,490 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 34 [2021-06-05 08:06:30,490 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291952180] [2021-06-05 08:06:30,490 INFO L462 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-06-05 08:06:30,490 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:06:30,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-06-05 08:06:30,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=950, Unknown=0, NotChecked=0, Total=1122 [2021-06-05 08:06:30,490 INFO L87 Difference]: Start difference. First operand 4763 states and 13328 transitions. Second operand has 34 states, 34 states have (on average 5.147058823529412) internal successors, (175), 34 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:31,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:06:31,450 INFO L93 Difference]: Finished difference Result 6581 states and 17167 transitions. [2021-06-05 08:06:31,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-06-05 08:06:31,450 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 5.147058823529412) internal successors, (175), 34 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 175 [2021-06-05 08:06:31,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:06:31,456 INFO L225 Difference]: With dead ends: 6581 [2021-06-05 08:06:31,456 INFO L226 Difference]: Without dead ends: 6311 [2021-06-05 08:06:31,456 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1744 ImplicationChecksByTransitivity, 985.4ms TimeCoverageRelationStatistics Valid=1677, Invalid=5129, Unknown=0, NotChecked=0, Total=6806 [2021-06-05 08:06:31,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6311 states. [2021-06-05 08:06:31,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6311 to 4838. [2021-06-05 08:06:31,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4838 states, 4837 states have (on average 2.8019433533181726) internal successors, (13553), 4837 states have internal predecessors, (13553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:31,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4838 states to 4838 states and 13553 transitions. [2021-06-05 08:06:31,516 INFO L78 Accepts]: Start accepts. Automaton has 4838 states and 13553 transitions. Word has length 175 [2021-06-05 08:06:31,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:06:31,517 INFO L482 AbstractCegarLoop]: Abstraction has 4838 states and 13553 transitions. [2021-06-05 08:06:31,517 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 5.147058823529412) internal successors, (175), 34 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:31,517 INFO L276 IsEmpty]: Start isEmpty. Operand 4838 states and 13553 transitions. [2021-06-05 08:06:31,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-06-05 08:06:31,521 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:06:31,521 INFO L521 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:06:31,721 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable424,420 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:06:31,721 INFO L430 AbstractCegarLoop]: === Iteration 426 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:06:31,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:06:31,722 INFO L82 PathProgramCache]: Analyzing trace with hash -843654668, now seen corresponding path program 417 times [2021-06-05 08:06:31,722 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:06:31,722 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210950127] [2021-06-05 08:06:31,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:06:31,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:06:32,031 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:06:32,031 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:06:32,031 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210950127] [2021-06-05 08:06:32,031 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210950127] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:06:32,031 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [250072664] [2021-06-05 08:06:32,032 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 421 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 421 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:06:32,110 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2021-06-05 08:06:32,110 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:06:32,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 35 conjunts are in the unsatisfiable core [2021-06-05 08:06:32,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:06:32,314 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:06:32,314 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [250072664] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:06:32,314 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:06:32,314 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 35 [2021-06-05 08:06:32,314 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915945802] [2021-06-05 08:06:32,315 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-06-05 08:06:32,315 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:06:32,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-06-05 08:06:32,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=1021, Unknown=0, NotChecked=0, Total=1190 [2021-06-05 08:06:32,315 INFO L87 Difference]: Start difference. First operand 4838 states and 13553 transitions. Second operand has 35 states, 35 states have (on average 5.057142857142857) internal successors, (177), 35 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:33,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:06:33,435 INFO L93 Difference]: Finished difference Result 6606 states and 17292 transitions. [2021-06-05 08:06:33,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-06-05 08:06:33,435 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 5.057142857142857) internal successors, (177), 35 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 175 [2021-06-05 08:06:33,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:06:33,442 INFO L225 Difference]: With dead ends: 6606 [2021-06-05 08:06:33,442 INFO L226 Difference]: Without dead ends: 6336 [2021-06-05 08:06:33,443 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1784 ImplicationChecksByTransitivity, 1132.9ms TimeCoverageRelationStatistics Valid=1711, Invalid=5429, Unknown=0, NotChecked=0, Total=7140 [2021-06-05 08:06:33,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6336 states. [2021-06-05 08:06:33,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6336 to 4913. [2021-06-05 08:06:33,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4913 states, 4912 states have (on average 2.804967426710098) internal successors, (13778), 4912 states have internal predecessors, (13778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:33,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4913 states to 4913 states and 13778 transitions. [2021-06-05 08:06:33,513 INFO L78 Accepts]: Start accepts. Automaton has 4913 states and 13778 transitions. Word has length 175 [2021-06-05 08:06:33,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:06:33,513 INFO L482 AbstractCegarLoop]: Abstraction has 4913 states and 13778 transitions. [2021-06-05 08:06:33,513 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 5.057142857142857) internal successors, (177), 35 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:33,513 INFO L276 IsEmpty]: Start isEmpty. Operand 4913 states and 13778 transitions. [2021-06-05 08:06:33,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-06-05 08:06:33,518 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:06:33,518 INFO L521 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:06:33,718 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 421 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable425 [2021-06-05 08:06:33,718 INFO L430 AbstractCegarLoop]: === Iteration 427 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:06:33,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:06:33,719 INFO L82 PathProgramCache]: Analyzing trace with hash 2059362530, now seen corresponding path program 418 times [2021-06-05 08:06:33,719 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:06:33,719 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834228707] [2021-06-05 08:06:33,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:06:33,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:06:34,092 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:06:34,092 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:06:34,092 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834228707] [2021-06-05 08:06:34,092 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834228707] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:06:34,092 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2098119872] [2021-06-05 08:06:34,092 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 422 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 422 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:06:34,185 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 08:06:34,186 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:06:34,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 35 conjunts are in the unsatisfiable core [2021-06-05 08:06:34,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:06:34,370 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:06:34,370 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2098119872] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:06:34,370 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:06:34,370 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 34 [2021-06-05 08:06:34,370 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545258873] [2021-06-05 08:06:34,370 INFO L462 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-06-05 08:06:34,371 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:06:34,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-06-05 08:06:34,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=945, Unknown=0, NotChecked=0, Total=1122 [2021-06-05 08:06:34,371 INFO L87 Difference]: Start difference. First operand 4913 states and 13778 transitions. Second operand has 34 states, 34 states have (on average 5.147058823529412) internal successors, (175), 34 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:35,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:06:35,356 INFO L93 Difference]: Finished difference Result 6631 states and 17417 transitions. [2021-06-05 08:06:35,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-06-05 08:06:35,356 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 5.147058823529412) internal successors, (175), 34 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 175 [2021-06-05 08:06:35,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:06:35,363 INFO L225 Difference]: With dead ends: 6631 [2021-06-05 08:06:35,363 INFO L226 Difference]: Without dead ends: 6361 [2021-06-05 08:06:35,364 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1877 ImplicationChecksByTransitivity, 1059.2ms TimeCoverageRelationStatistics Valid=1799, Invalid=5341, Unknown=0, NotChecked=0, Total=7140 [2021-06-05 08:06:35,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6361 states. [2021-06-05 08:06:35,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6361 to 4988. [2021-06-05 08:06:35,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4988 states, 4987 states have (on average 2.80790054140766) internal successors, (14003), 4987 states have internal predecessors, (14003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:35,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4988 states to 4988 states and 14003 transitions. [2021-06-05 08:06:35,428 INFO L78 Accepts]: Start accepts. Automaton has 4988 states and 14003 transitions. Word has length 175 [2021-06-05 08:06:35,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:06:35,428 INFO L482 AbstractCegarLoop]: Abstraction has 4988 states and 14003 transitions. [2021-06-05 08:06:35,429 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 5.147058823529412) internal successors, (175), 34 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:35,429 INFO L276 IsEmpty]: Start isEmpty. Operand 4988 states and 14003 transitions. [2021-06-05 08:06:35,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-06-05 08:06:35,433 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:06:35,433 INFO L521 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:06:35,633 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable426,422 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:06:35,633 INFO L430 AbstractCegarLoop]: === Iteration 428 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:06:35,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:06:35,634 INFO L82 PathProgramCache]: Analyzing trace with hash 1814285234, now seen corresponding path program 419 times [2021-06-05 08:06:35,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:06:35,634 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339450523] [2021-06-05 08:06:35,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:06:35,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:06:35,942 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:06:35,942 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:06:35,943 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339450523] [2021-06-05 08:06:35,943 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339450523] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:06:35,943 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1895389503] [2021-06-05 08:06:35,943 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 423 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 423 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:06:36,011 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2021-06-05 08:06:36,012 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:06:36,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 35 conjunts are in the unsatisfiable core [2021-06-05 08:06:36,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:06:36,214 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:06:36,214 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1895389503] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:06:36,214 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:06:36,214 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 35 [2021-06-05 08:06:36,214 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079341346] [2021-06-05 08:06:36,214 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-06-05 08:06:36,214 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:06:36,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-06-05 08:06:36,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=1015, Unknown=0, NotChecked=0, Total=1190 [2021-06-05 08:06:36,215 INFO L87 Difference]: Start difference. First operand 4988 states and 14003 transitions. Second operand has 35 states, 35 states have (on average 5.057142857142857) internal successors, (177), 35 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:37,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:06:37,395 INFO L93 Difference]: Finished difference Result 6656 states and 17542 transitions. [2021-06-05 08:06:37,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-06-05 08:06:37,395 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 5.057142857142857) internal successors, (177), 35 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 175 [2021-06-05 08:06:37,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:06:37,401 INFO L225 Difference]: With dead ends: 6656 [2021-06-05 08:06:37,401 INFO L226 Difference]: Without dead ends: 6386 [2021-06-05 08:06:37,401 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1920 ImplicationChecksByTransitivity, 1195.7ms TimeCoverageRelationStatistics Valid=1835, Invalid=5647, Unknown=0, NotChecked=0, Total=7482 [2021-06-05 08:06:37,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6386 states. [2021-06-05 08:06:37,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6386 to 5063. [2021-06-05 08:06:37,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5063 states, 5062 states have (on average 2.8107467404188067) internal successors, (14228), 5062 states have internal predecessors, (14228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:37,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5063 states to 5063 states and 14228 transitions. [2021-06-05 08:06:37,457 INFO L78 Accepts]: Start accepts. Automaton has 5063 states and 14228 transitions. Word has length 175 [2021-06-05 08:06:37,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:06:37,457 INFO L482 AbstractCegarLoop]: Abstraction has 5063 states and 14228 transitions. [2021-06-05 08:06:37,457 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 5.057142857142857) internal successors, (177), 35 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:37,457 INFO L276 IsEmpty]: Start isEmpty. Operand 5063 states and 14228 transitions. [2021-06-05 08:06:37,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-06-05 08:06:37,461 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:06:37,461 INFO L521 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:06:37,661 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable427,423 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:06:37,661 INFO L430 AbstractCegarLoop]: === Iteration 429 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:06:37,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:06:37,662 INFO L82 PathProgramCache]: Analyzing trace with hash 1437434912, now seen corresponding path program 420 times [2021-06-05 08:06:37,662 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:06:37,662 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99808197] [2021-06-05 08:06:37,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:06:37,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:06:37,962 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:06:37,963 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:06:37,963 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99808197] [2021-06-05 08:06:37,963 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99808197] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:06:37,963 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1247348200] [2021-06-05 08:06:37,963 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 424 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 424 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:06:38,041 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2021-06-05 08:06:38,041 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:06:38,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 35 conjunts are in the unsatisfiable core [2021-06-05 08:06:38,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:06:38,225 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:06:38,225 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1247348200] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:06:38,225 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:06:38,226 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 34 [2021-06-05 08:06:38,226 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315852957] [2021-06-05 08:06:38,226 INFO L462 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-06-05 08:06:38,226 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:06:38,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-06-05 08:06:38,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=936, Unknown=0, NotChecked=0, Total=1122 [2021-06-05 08:06:38,226 INFO L87 Difference]: Start difference. First operand 5063 states and 14228 transitions. Second operand has 34 states, 34 states have (on average 5.147058823529412) internal successors, (175), 34 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:39,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:06:39,256 INFO L93 Difference]: Finished difference Result 6681 states and 17667 transitions. [2021-06-05 08:06:39,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-06-05 08:06:39,256 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 5.147058823529412) internal successors, (175), 34 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 175 [2021-06-05 08:06:39,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:06:39,263 INFO L225 Difference]: With dead ends: 6681 [2021-06-05 08:06:39,263 INFO L226 Difference]: Without dead ends: 6411 [2021-06-05 08:06:39,264 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2014 ImplicationChecksByTransitivity, 1028.1ms TimeCoverageRelationStatistics Valid=1937, Invalid=5545, Unknown=0, NotChecked=0, Total=7482 [2021-06-05 08:06:39,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6411 states. [2021-06-05 08:06:39,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6411 to 5138. [2021-06-05 08:06:39,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5138 states, 5137 states have (on average 2.813509830640452) internal successors, (14453), 5137 states have internal predecessors, (14453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:39,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5138 states to 5138 states and 14453 transitions. [2021-06-05 08:06:39,328 INFO L78 Accepts]: Start accepts. Automaton has 5138 states and 14453 transitions. Word has length 175 [2021-06-05 08:06:39,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:06:39,328 INFO L482 AbstractCegarLoop]: Abstraction has 5138 states and 14453 transitions. [2021-06-05 08:06:39,328 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 5.147058823529412) internal successors, (175), 34 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:39,328 INFO L276 IsEmpty]: Start isEmpty. Operand 5138 states and 14453 transitions. [2021-06-05 08:06:39,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-06-05 08:06:39,332 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:06:39,332 INFO L521 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:06:39,532 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable428,424 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:06:39,532 INFO L430 AbstractCegarLoop]: === Iteration 430 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:06:39,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:06:39,533 INFO L82 PathProgramCache]: Analyzing trace with hash -1530776848, now seen corresponding path program 421 times [2021-06-05 08:06:39,533 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:06:39,533 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387962913] [2021-06-05 08:06:39,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:06:39,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:06:39,862 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:06:39,862 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:06:39,862 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387962913] [2021-06-05 08:06:39,862 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387962913] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:06:39,862 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1201433263] [2021-06-05 08:06:39,863 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 425 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 425 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:06:39,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:06:39,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 35 conjunts are in the unsatisfiable core [2021-06-05 08:06:39,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:06:40,126 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:06:40,126 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1201433263] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:06:40,126 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:06:40,126 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 35 [2021-06-05 08:06:40,126 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922796762] [2021-06-05 08:06:40,126 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-06-05 08:06:40,126 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:06:40,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-06-05 08:06:40,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=1005, Unknown=0, NotChecked=0, Total=1190 [2021-06-05 08:06:40,127 INFO L87 Difference]: Start difference. First operand 5138 states and 14453 transitions. Second operand has 35 states, 35 states have (on average 5.057142857142857) internal successors, (177), 35 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:41,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:06:41,370 INFO L93 Difference]: Finished difference Result 6706 states and 17792 transitions. [2021-06-05 08:06:41,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-06-05 08:06:41,370 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 5.057142857142857) internal successors, (177), 35 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 175 [2021-06-05 08:06:41,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:06:41,377 INFO L225 Difference]: With dead ends: 6706 [2021-06-05 08:06:41,377 INFO L226 Difference]: Without dead ends: 6436 [2021-06-05 08:06:41,378 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2060 ImplicationChecksByTransitivity, 1251.3ms TimeCoverageRelationStatistics Valid=1975, Invalid=5857, Unknown=0, NotChecked=0, Total=7832 [2021-06-05 08:06:41,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6436 states. [2021-06-05 08:06:41,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6436 to 5213. [2021-06-05 08:06:41,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5213 states, 5212 states have (on average 2.816193399846508) internal successors, (14678), 5212 states have internal predecessors, (14678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:41,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5213 states to 5213 states and 14678 transitions. [2021-06-05 08:06:41,446 INFO L78 Accepts]: Start accepts. Automaton has 5213 states and 14678 transitions. Word has length 175 [2021-06-05 08:06:41,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:06:41,446 INFO L482 AbstractCegarLoop]: Abstraction has 5213 states and 14678 transitions. [2021-06-05 08:06:41,446 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 5.057142857142857) internal successors, (177), 35 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:41,447 INFO L276 IsEmpty]: Start isEmpty. Operand 5213 states and 14678 transitions. [2021-06-05 08:06:41,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-06-05 08:06:41,451 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:06:41,451 INFO L521 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:06:41,651 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable429,425 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:06:41,651 INFO L430 AbstractCegarLoop]: === Iteration 431 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:06:41,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:06:41,652 INFO L82 PathProgramCache]: Analyzing trace with hash -1076560674, now seen corresponding path program 422 times [2021-06-05 08:06:41,652 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:06:41,652 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345756399] [2021-06-05 08:06:41,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:06:41,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:06:41,945 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:06:41,945 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:06:41,945 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345756399] [2021-06-05 08:06:41,945 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345756399] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:06:41,945 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [62397363] [2021-06-05 08:06:41,945 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 426 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 426 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:06:42,009 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 08:06:42,009 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:06:42,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 35 conjunts are in the unsatisfiable core [2021-06-05 08:06:42,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:06:42,191 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:06:42,191 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [62397363] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:06:42,191 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:06:42,191 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 34 [2021-06-05 08:06:42,191 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850821277] [2021-06-05 08:06:42,191 INFO L462 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-06-05 08:06:42,191 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:06:42,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-06-05 08:06:42,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=923, Unknown=0, NotChecked=0, Total=1122 [2021-06-05 08:06:42,192 INFO L87 Difference]: Start difference. First operand 5213 states and 14678 transitions. Second operand has 34 states, 34 states have (on average 5.147058823529412) internal successors, (175), 34 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:43,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:06:43,268 INFO L93 Difference]: Finished difference Result 6731 states and 17917 transitions. [2021-06-05 08:06:43,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-06-05 08:06:43,269 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 5.147058823529412) internal successors, (175), 34 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 175 [2021-06-05 08:06:43,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:06:43,275 INFO L225 Difference]: With dead ends: 6731 [2021-06-05 08:06:43,275 INFO L226 Difference]: Without dead ends: 6461 [2021-06-05 08:06:43,276 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2155 ImplicationChecksByTransitivity, 1048.2ms TimeCoverageRelationStatistics Valid=2091, Invalid=5741, Unknown=0, NotChecked=0, Total=7832 [2021-06-05 08:06:43,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6461 states. [2021-06-05 08:06:43,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6461 to 5288. [2021-06-05 08:06:43,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5288 states, 5287 states have (on average 2.818800832229998) internal successors, (14903), 5287 states have internal predecessors, (14903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:43,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5288 states to 5288 states and 14903 transitions. [2021-06-05 08:06:43,336 INFO L78 Accepts]: Start accepts. Automaton has 5288 states and 14903 transitions. Word has length 175 [2021-06-05 08:06:43,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:06:43,336 INFO L482 AbstractCegarLoop]: Abstraction has 5288 states and 14903 transitions. [2021-06-05 08:06:43,337 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 5.147058823529412) internal successors, (175), 34 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:43,337 INFO L276 IsEmpty]: Start isEmpty. Operand 5288 states and 14903 transitions. [2021-06-05 08:06:43,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-06-05 08:06:43,341 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:06:43,341 INFO L521 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:06:43,541 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable430,426 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:06:43,541 INFO L430 AbstractCegarLoop]: === Iteration 432 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:06:43,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:06:43,542 INFO L82 PathProgramCache]: Analyzing trace with hash -77664338, now seen corresponding path program 423 times [2021-06-05 08:06:43,542 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:06:43,542 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112114228] [2021-06-05 08:06:43,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:06:43,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:06:43,844 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:06:43,844 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:06:43,844 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112114228] [2021-06-05 08:06:43,844 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112114228] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:06:43,844 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1535375336] [2021-06-05 08:06:43,844 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 427 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 427 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:06:43,923 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2021-06-05 08:06:43,923 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:06:43,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 35 conjunts are in the unsatisfiable core [2021-06-05 08:06:43,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:06:44,119 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:06:44,119 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1535375336] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:06:44,119 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:06:44,119 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 35 [2021-06-05 08:06:44,119 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787874062] [2021-06-05 08:06:44,120 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-06-05 08:06:44,120 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:06:44,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-06-05 08:06:44,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=991, Unknown=0, NotChecked=0, Total=1190 [2021-06-05 08:06:44,120 INFO L87 Difference]: Start difference. First operand 5288 states and 14903 transitions. Second operand has 35 states, 35 states have (on average 5.057142857142857) internal successors, (177), 35 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:45,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:06:45,433 INFO L93 Difference]: Finished difference Result 6756 states and 18042 transitions. [2021-06-05 08:06:45,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-06-05 08:06:45,433 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 5.057142857142857) internal successors, (177), 35 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 175 [2021-06-05 08:06:45,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:06:45,439 INFO L225 Difference]: With dead ends: 6756 [2021-06-05 08:06:45,439 INFO L226 Difference]: Without dead ends: 6486 [2021-06-05 08:06:45,439 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2204 ImplicationChecksByTransitivity, 1293.9ms TimeCoverageRelationStatistics Valid=2131, Invalid=6059, Unknown=0, NotChecked=0, Total=8190 [2021-06-05 08:06:45,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6486 states. [2021-06-05 08:06:45,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6486 to 5363. [2021-06-05 08:06:45,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5363 states, 5362 states have (on average 2.8213353226408056) internal successors, (15128), 5362 states have internal predecessors, (15128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:45,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5363 states to 5363 states and 15128 transitions. [2021-06-05 08:06:45,502 INFO L78 Accepts]: Start accepts. Automaton has 5363 states and 15128 transitions. Word has length 175 [2021-06-05 08:06:45,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:06:45,502 INFO L482 AbstractCegarLoop]: Abstraction has 5363 states and 15128 transitions. [2021-06-05 08:06:45,502 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 5.057142857142857) internal successors, (177), 35 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:45,502 INFO L276 IsEmpty]: Start isEmpty. Operand 5363 states and 15128 transitions. [2021-06-05 08:06:45,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-06-05 08:06:45,507 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:06:45,507 INFO L521 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:06:45,707 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 427 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable431 [2021-06-05 08:06:45,707 INFO L430 AbstractCegarLoop]: === Iteration 433 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:06:45,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:06:45,708 INFO L82 PathProgramCache]: Analyzing trace with hash -1956992228, now seen corresponding path program 424 times [2021-06-05 08:06:45,708 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:06:45,708 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374597656] [2021-06-05 08:06:45,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:06:45,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:06:46,004 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:06:46,004 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:06:46,004 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374597656] [2021-06-05 08:06:46,004 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374597656] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:06:46,004 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1690289015] [2021-06-05 08:06:46,004 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 428 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 428 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:06:46,069 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 08:06:46,069 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:06:46,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 35 conjunts are in the unsatisfiable core [2021-06-05 08:06:46,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:06:46,245 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:06:46,245 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1690289015] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:06:46,245 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:06:46,245 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 34 [2021-06-05 08:06:46,245 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023044232] [2021-06-05 08:06:46,246 INFO L462 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-06-05 08:06:46,246 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:06:46,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-06-05 08:06:46,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=216, Invalid=906, Unknown=0, NotChecked=0, Total=1122 [2021-06-05 08:06:46,246 INFO L87 Difference]: Start difference. First operand 5363 states and 15128 transitions. Second operand has 34 states, 34 states have (on average 5.147058823529412) internal successors, (175), 34 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:47,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:06:47,347 INFO L93 Difference]: Finished difference Result 6781 states and 18167 transitions. [2021-06-05 08:06:47,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-06-05 08:06:47,347 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 5.147058823529412) internal successors, (175), 34 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 175 [2021-06-05 08:06:47,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:06:47,354 INFO L225 Difference]: With dead ends: 6781 [2021-06-05 08:06:47,354 INFO L226 Difference]: Without dead ends: 6511 [2021-06-05 08:06:47,355 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2300 ImplicationChecksByTransitivity, 1089.9ms TimeCoverageRelationStatistics Valid=2261, Invalid=5929, Unknown=0, NotChecked=0, Total=8190 [2021-06-05 08:06:47,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6511 states. [2021-06-05 08:06:47,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6511 to 5438. [2021-06-05 08:06:47,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5438 states, 5437 states have (on average 2.823799889645025) internal successors, (15353), 5437 states have internal predecessors, (15353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:47,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5438 states to 5438 states and 15353 transitions. [2021-06-05 08:06:47,424 INFO L78 Accepts]: Start accepts. Automaton has 5438 states and 15353 transitions. Word has length 175 [2021-06-05 08:06:47,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:06:47,424 INFO L482 AbstractCegarLoop]: Abstraction has 5438 states and 15353 transitions. [2021-06-05 08:06:47,424 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 5.147058823529412) internal successors, (175), 34 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:47,424 INFO L276 IsEmpty]: Start isEmpty. Operand 5438 states and 15353 transitions. [2021-06-05 08:06:47,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-06-05 08:06:47,428 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:06:47,428 INFO L521 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:06:47,628 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 428 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable432 [2021-06-05 08:06:47,629 INFO L430 AbstractCegarLoop]: === Iteration 434 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:06:47,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:06:47,629 INFO L82 PathProgramCache]: Analyzing trace with hash 73327084, now seen corresponding path program 425 times [2021-06-05 08:06:47,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:06:47,629 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374078351] [2021-06-05 08:06:47,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:06:47,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:06:47,928 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:06:47,928 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:06:47,929 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374078351] [2021-06-05 08:06:47,929 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374078351] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:06:47,929 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1009238753] [2021-06-05 08:06:47,929 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 429 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 429 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:06:47,997 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2021-06-05 08:06:47,997 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:06:47,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 35 conjunts are in the unsatisfiable core [2021-06-05 08:06:47,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:06:48,224 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:06:48,224 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1009238753] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:06:48,224 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:06:48,225 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 35 [2021-06-05 08:06:48,225 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049058924] [2021-06-05 08:06:48,225 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-06-05 08:06:48,225 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:06:48,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-06-05 08:06:48,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=973, Unknown=0, NotChecked=0, Total=1190 [2021-06-05 08:06:48,225 INFO L87 Difference]: Start difference. First operand 5438 states and 15353 transitions. Second operand has 35 states, 35 states have (on average 5.057142857142857) internal successors, (177), 35 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:49,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:06:49,578 INFO L93 Difference]: Finished difference Result 6806 states and 18292 transitions. [2021-06-05 08:06:49,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-06-05 08:06:49,578 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 5.057142857142857) internal successors, (177), 35 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 175 [2021-06-05 08:06:49,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:06:49,586 INFO L225 Difference]: With dead ends: 6806 [2021-06-05 08:06:49,586 INFO L226 Difference]: Without dead ends: 6536 [2021-06-05 08:06:49,587 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2352 ImplicationChecksByTransitivity, 1318.8ms TimeCoverageRelationStatistics Valid=2303, Invalid=6253, Unknown=0, NotChecked=0, Total=8556 [2021-06-05 08:06:49,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6536 states. [2021-06-05 08:06:49,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6536 to 5513. [2021-06-05 08:06:49,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5513 states, 5512 states have (on average 2.826197387518142) internal successors, (15578), 5512 states have internal predecessors, (15578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:49,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5513 states to 5513 states and 15578 transitions. [2021-06-05 08:06:49,657 INFO L78 Accepts]: Start accepts. Automaton has 5513 states and 15578 transitions. Word has length 175 [2021-06-05 08:06:49,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:06:49,658 INFO L482 AbstractCegarLoop]: Abstraction has 5513 states and 15578 transitions. [2021-06-05 08:06:49,658 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 5.057142857142857) internal successors, (177), 35 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:49,658 INFO L276 IsEmpty]: Start isEmpty. Operand 5513 states and 15578 transitions. [2021-06-05 08:06:49,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-06-05 08:06:49,662 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:06:49,662 INFO L521 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:06:49,862 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 429 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable433 [2021-06-05 08:06:49,863 INFO L430 AbstractCegarLoop]: === Iteration 435 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:06:49,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:06:49,867 INFO L82 PathProgramCache]: Analyzing trace with hash 687566554, now seen corresponding path program 426 times [2021-06-05 08:06:49,867 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:06:49,867 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690156121] [2021-06-05 08:06:49,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:06:49,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:06:50,167 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:06:50,167 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:06:50,167 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690156121] [2021-06-05 08:06:50,167 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690156121] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:06:50,167 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2073576532] [2021-06-05 08:06:50,167 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 430 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 430 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:06:50,246 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2021-06-05 08:06:50,246 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:06:50,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 35 conjunts are in the unsatisfiable core [2021-06-05 08:06:50,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:06:50,425 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:06:50,425 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2073576532] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:06:50,425 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:06:50,425 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 34 [2021-06-05 08:06:50,426 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130012965] [2021-06-05 08:06:50,426 INFO L462 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-06-05 08:06:50,426 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:06:50,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-06-05 08:06:50,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=237, Invalid=885, Unknown=0, NotChecked=0, Total=1122 [2021-06-05 08:06:50,426 INFO L87 Difference]: Start difference. First operand 5513 states and 15578 transitions. Second operand has 34 states, 34 states have (on average 5.147058823529412) internal successors, (175), 34 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:51,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:06:51,596 INFO L93 Difference]: Finished difference Result 6831 states and 18417 transitions. [2021-06-05 08:06:51,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-06-05 08:06:51,597 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 5.147058823529412) internal successors, (175), 34 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 175 [2021-06-05 08:06:51,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:06:51,603 INFO L225 Difference]: With dead ends: 6831 [2021-06-05 08:06:51,603 INFO L226 Difference]: Without dead ends: 6561 [2021-06-05 08:06:51,603 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2449 ImplicationChecksByTransitivity, 1141.6ms TimeCoverageRelationStatistics Valid=2447, Invalid=6109, Unknown=0, NotChecked=0, Total=8556 [2021-06-05 08:06:51,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6561 states. [2021-06-05 08:06:51,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6561 to 5588. [2021-06-05 08:06:51,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5588 states, 5587 states have (on average 2.828530517272239) internal successors, (15803), 5587 states have internal predecessors, (15803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:51,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5588 states to 5588 states and 15803 transitions. [2021-06-05 08:06:51,667 INFO L78 Accepts]: Start accepts. Automaton has 5588 states and 15803 transitions. Word has length 175 [2021-06-05 08:06:51,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:06:51,667 INFO L482 AbstractCegarLoop]: Abstraction has 5588 states and 15803 transitions. [2021-06-05 08:06:51,667 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 5.147058823529412) internal successors, (175), 34 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:51,667 INFO L276 IsEmpty]: Start isEmpty. Operand 5588 states and 15803 transitions. [2021-06-05 08:06:51,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-06-05 08:06:51,671 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:06:51,671 INFO L521 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:06:51,871 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable434,430 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:06:51,872 INFO L430 AbstractCegarLoop]: === Iteration 436 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:06:51,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:06:51,872 INFO L82 PathProgramCache]: Analyzing trace with hash -1027675734, now seen corresponding path program 427 times [2021-06-05 08:06:51,872 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:06:51,872 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494608822] [2021-06-05 08:06:51,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:06:51,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:06:52,172 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:06:52,172 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:06:52,172 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494608822] [2021-06-05 08:06:52,173 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494608822] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:06:52,173 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [823422035] [2021-06-05 08:06:52,173 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 431 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 431 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:06:52,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:06:52,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 35 conjunts are in the unsatisfiable core [2021-06-05 08:06:52,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:06:52,431 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:06:52,431 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [823422035] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:06:52,431 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:06:52,431 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 35 [2021-06-05 08:06:52,431 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745194978] [2021-06-05 08:06:52,432 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-06-05 08:06:52,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:06:52,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-06-05 08:06:52,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=239, Invalid=951, Unknown=0, NotChecked=0, Total=1190 [2021-06-05 08:06:52,432 INFO L87 Difference]: Start difference. First operand 5588 states and 15803 transitions. Second operand has 35 states, 35 states have (on average 5.057142857142857) internal successors, (177), 35 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:53,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:06:53,883 INFO L93 Difference]: Finished difference Result 6916 states and 18707 transitions. [2021-06-05 08:06:53,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-06-05 08:06:53,883 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 5.057142857142857) internal successors, (177), 35 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 175 [2021-06-05 08:06:53,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:06:53,889 INFO L225 Difference]: With dead ends: 6916 [2021-06-05 08:06:53,890 INFO L226 Difference]: Without dead ends: 6646 [2021-06-05 08:06:53,890 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2504 ImplicationChecksByTransitivity, 1370.8ms TimeCoverageRelationStatistics Valid=2491, Invalid=6439, Unknown=0, NotChecked=0, Total=8930 [2021-06-05 08:06:53,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6646 states. [2021-06-05 08:06:53,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6646 to 5663. [2021-06-05 08:06:53,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5663 states, 5662 states have (on average 2.834334157541505) internal successors, (16048), 5662 states have internal predecessors, (16048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:53,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5663 states to 5663 states and 16048 transitions. [2021-06-05 08:06:53,960 INFO L78 Accepts]: Start accepts. Automaton has 5663 states and 16048 transitions. Word has length 175 [2021-06-05 08:06:53,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:06:53,960 INFO L482 AbstractCegarLoop]: Abstraction has 5663 states and 16048 transitions. [2021-06-05 08:06:53,960 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 5.057142857142857) internal successors, (177), 35 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:53,960 INFO L276 IsEmpty]: Start isEmpty. Operand 5663 states and 16048 transitions. [2021-06-05 08:06:53,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-06-05 08:06:53,965 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:06:53,965 INFO L521 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:06:54,165 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 431 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable435 [2021-06-05 08:06:54,166 INFO L430 AbstractCegarLoop]: === Iteration 437 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:06:54,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:06:54,166 INFO L82 PathProgramCache]: Analyzing trace with hash -2060323336, now seen corresponding path program 428 times [2021-06-05 08:06:54,166 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:06:54,167 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803530348] [2021-06-05 08:06:54,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:06:54,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:06:54,465 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:06:54,466 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:06:54,466 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803530348] [2021-06-05 08:06:54,466 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803530348] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:06:54,466 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [575913112] [2021-06-05 08:06:54,466 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 432 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 432 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:06:54,531 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 08:06:54,531 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:06:54,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 35 conjunts are in the unsatisfiable core [2021-06-05 08:06:54,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:06:54,707 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:06:54,707 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [575913112] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:06:54,707 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:06:54,707 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 34 [2021-06-05 08:06:54,707 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190155185] [2021-06-05 08:06:54,707 INFO L462 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-06-05 08:06:54,707 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:06:54,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-06-05 08:06:54,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=262, Invalid=860, Unknown=0, NotChecked=0, Total=1122 [2021-06-05 08:06:54,708 INFO L87 Difference]: Start difference. First operand 5663 states and 16048 transitions. Second operand has 34 states, 34 states have (on average 5.147058823529412) internal successors, (175), 34 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:55,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:06:55,907 INFO L93 Difference]: Finished difference Result 7658 states and 20831 transitions. [2021-06-05 08:06:55,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-06-05 08:06:55,908 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 5.147058823529412) internal successors, (175), 34 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 175 [2021-06-05 08:06:55,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:06:55,916 INFO L225 Difference]: With dead ends: 7658 [2021-06-05 08:06:55,917 INFO L226 Difference]: Without dead ends: 7388 [2021-06-05 08:06:55,917 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2601 ImplicationChecksByTransitivity, 1166.3ms TimeCoverageRelationStatistics Valid=2650, Invalid=6280, Unknown=0, NotChecked=0, Total=8930 [2021-06-05 08:06:55,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7388 states. [2021-06-05 08:06:55,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7388 to 5843. [2021-06-05 08:06:55,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5843 states, 5842 states have (on average 2.842690859294762) internal successors, (16607), 5842 states have internal predecessors, (16607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:55,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5843 states to 5843 states and 16607 transitions. [2021-06-05 08:06:55,991 INFO L78 Accepts]: Start accepts. Automaton has 5843 states and 16607 transitions. Word has length 175 [2021-06-05 08:06:55,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:06:55,991 INFO L482 AbstractCegarLoop]: Abstraction has 5843 states and 16607 transitions. [2021-06-05 08:06:55,992 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 5.147058823529412) internal successors, (175), 34 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:55,992 INFO L276 IsEmpty]: Start isEmpty. Operand 5843 states and 16607 transitions. [2021-06-05 08:06:55,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-06-05 08:06:55,996 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:06:55,996 INFO L521 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:06:56,196 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 432 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable436 [2021-06-05 08:06:56,197 INFO L430 AbstractCegarLoop]: === Iteration 438 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:06:56,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:06:56,197 INFO L82 PathProgramCache]: Analyzing trace with hash -2037980086, now seen corresponding path program 429 times [2021-06-05 08:06:56,197 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:06:56,197 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330077209] [2021-06-05 08:06:56,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:06:56,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:06:56,500 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:06:56,500 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:06:56,500 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330077209] [2021-06-05 08:06:56,500 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330077209] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:06:56,500 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1149773531] [2021-06-05 08:06:56,500 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 433 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 433 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:06:56,578 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2021-06-05 08:06:56,578 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:06:56,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 35 conjunts are in the unsatisfiable core [2021-06-05 08:06:56,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:06:56,822 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:06:56,823 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1149773531] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:06:56,823 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:06:56,823 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 36 [2021-06-05 08:06:56,823 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361247252] [2021-06-05 08:06:56,823 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-06-05 08:06:56,823 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:06:56,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-06-05 08:06:56,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=268, Invalid=992, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 08:06:56,824 INFO L87 Difference]: Start difference. First operand 5843 states and 16607 transitions. Second operand has 36 states, 36 states have (on average 4.944444444444445) internal successors, (178), 36 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:58,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:06:58,321 INFO L93 Difference]: Finished difference Result 7526 states and 20496 transitions. [2021-06-05 08:06:58,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-06-05 08:06:58,322 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 4.944444444444445) internal successors, (178), 36 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 175 [2021-06-05 08:06:58,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:06:58,329 INFO L225 Difference]: With dead ends: 7526 [2021-06-05 08:06:58,329 INFO L226 Difference]: Without dead ends: 6951 [2021-06-05 08:06:58,330 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2911 ImplicationChecksByTransitivity, 1466.5ms TimeCoverageRelationStatistics Valid=2786, Invalid=7314, Unknown=0, NotChecked=0, Total=10100 [2021-06-05 08:06:58,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6951 states. [2021-06-05 08:06:58,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6951 to 5878. [2021-06-05 08:06:58,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5878 states, 5877 states have (on average 2.8386932108218477) internal successors, (16683), 5877 states have internal predecessors, (16683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:58,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5878 states to 5878 states and 16683 transitions. [2021-06-05 08:06:58,393 INFO L78 Accepts]: Start accepts. Automaton has 5878 states and 16683 transitions. Word has length 175 [2021-06-05 08:06:58,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:06:58,393 INFO L482 AbstractCegarLoop]: Abstraction has 5878 states and 16683 transitions. [2021-06-05 08:06:58,393 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 4.944444444444445) internal successors, (178), 36 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:58,394 INFO L276 IsEmpty]: Start isEmpty. Operand 5878 states and 16683 transitions. [2021-06-05 08:06:58,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-06-05 08:06:58,398 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:06:58,398 INFO L521 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:06:58,599 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 433 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable437 [2021-06-05 08:06:58,599 INFO L430 AbstractCegarLoop]: === Iteration 439 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:06:58,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:06:58,599 INFO L82 PathProgramCache]: Analyzing trace with hash 1789996418, now seen corresponding path program 430 times [2021-06-05 08:06:58,599 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:06:58,599 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260212087] [2021-06-05 08:06:58,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:06:58,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:06:58,969 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:06:58,969 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:06:58,969 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260212087] [2021-06-05 08:06:58,969 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260212087] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:06:58,969 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1451799961] [2021-06-05 08:06:58,970 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 434 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 434 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:06:59,035 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 08:06:59,035 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:06:59,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 37 conjunts are in the unsatisfiable core [2021-06-05 08:06:59,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:06:59,285 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:06:59,285 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1451799961] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:06:59,285 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:06:59,285 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 38 [2021-06-05 08:06:59,285 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713035538] [2021-06-05 08:06:59,285 INFO L462 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-06-05 08:06:59,285 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:06:59,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-06-05 08:06:59,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=318, Invalid=1088, Unknown=0, NotChecked=0, Total=1406 [2021-06-05 08:06:59,286 INFO L87 Difference]: Start difference. First operand 5878 states and 16683 transitions. Second operand has 38 states, 38 states have (on average 5.473684210526316) internal successors, (208), 38 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:00,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:07:00,043 INFO L93 Difference]: Finished difference Result 7268 states and 19783 transitions. [2021-06-05 08:07:00,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-05 08:07:00,043 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 5.473684210526316) internal successors, (208), 38 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 180 [2021-06-05 08:07:00,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:07:00,050 INFO L225 Difference]: With dead ends: 7268 [2021-06-05 08:07:00,050 INFO L226 Difference]: Without dead ends: 6934 [2021-06-05 08:07:00,050 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1113 ImplicationChecksByTransitivity, 903.5ms TimeCoverageRelationStatistics Valid=1485, Invalid=3917, Unknown=0, NotChecked=0, Total=5402 [2021-06-05 08:07:00,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6934 states. [2021-06-05 08:07:00,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6934 to 5963. [2021-06-05 08:07:00,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5963 states, 5962 states have (on average 2.8267359946326738) internal successors, (16853), 5962 states have internal predecessors, (16853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:00,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5963 states to 5963 states and 16853 transitions. [2021-06-05 08:07:00,110 INFO L78 Accepts]: Start accepts. Automaton has 5963 states and 16853 transitions. Word has length 180 [2021-06-05 08:07:00,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:07:00,110 INFO L482 AbstractCegarLoop]: Abstraction has 5963 states and 16853 transitions. [2021-06-05 08:07:00,110 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 38 states, 38 states have (on average 5.473684210526316) internal successors, (208), 38 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:00,110 INFO L276 IsEmpty]: Start isEmpty. Operand 5963 states and 16853 transitions. [2021-06-05 08:07:00,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-06-05 08:07:00,114 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:07:00,114 INFO L521 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:07:00,315 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable438,434 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:07:00,315 INFO L430 AbstractCegarLoop]: === Iteration 440 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:07:00,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:07:00,315 INFO L82 PathProgramCache]: Analyzing trace with hash 308357446, now seen corresponding path program 431 times [2021-06-05 08:07:00,315 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:07:00,315 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549185691] [2021-06-05 08:07:00,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:07:00,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:07:00,699 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:07:00,699 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:07:00,699 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549185691] [2021-06-05 08:07:00,699 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549185691] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:07:00,699 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1815417557] [2021-06-05 08:07:00,699 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 435 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 435 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:07:00,768 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2021-06-05 08:07:00,768 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:07:00,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 36 conjunts are in the unsatisfiable core [2021-06-05 08:07:00,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:07:00,973 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:07:00,973 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1815417557] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:07:00,973 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:07:00,974 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 35 [2021-06-05 08:07:00,974 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141990949] [2021-06-05 08:07:00,974 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-06-05 08:07:00,974 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:07:00,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-06-05 08:07:00,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=912, Unknown=0, NotChecked=0, Total=1190 [2021-06-05 08:07:00,974 INFO L87 Difference]: Start difference. First operand 5963 states and 16853 transitions. Second operand has 35 states, 35 states have (on average 5.142857142857143) internal successors, (180), 35 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:01,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:07:01,614 INFO L93 Difference]: Finished difference Result 8561 states and 22177 transitions. [2021-06-05 08:07:01,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-05 08:07:01,614 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 5.142857142857143) internal successors, (180), 35 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 180 [2021-06-05 08:07:01,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:07:01,623 INFO L225 Difference]: With dead ends: 8561 [2021-06-05 08:07:01,623 INFO L226 Difference]: Without dead ends: 8291 [2021-06-05 08:07:01,623 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 810 ImplicationChecksByTransitivity, 817.2ms TimeCoverageRelationStatistics Valid=1286, Invalid=3270, Unknown=0, NotChecked=0, Total=4556 [2021-06-05 08:07:01,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8291 states. [2021-06-05 08:07:01,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8291 to 5978. [2021-06-05 08:07:01,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5978 states, 5977 states have (on average 2.824661201271541) internal successors, (16883), 5977 states have internal predecessors, (16883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:01,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5978 states to 5978 states and 16883 transitions. [2021-06-05 08:07:01,689 INFO L78 Accepts]: Start accepts. Automaton has 5978 states and 16883 transitions. Word has length 180 [2021-06-05 08:07:01,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:07:01,689 INFO L482 AbstractCegarLoop]: Abstraction has 5978 states and 16883 transitions. [2021-06-05 08:07:01,689 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 5.142857142857143) internal successors, (180), 35 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:01,689 INFO L276 IsEmpty]: Start isEmpty. Operand 5978 states and 16883 transitions. [2021-06-05 08:07:01,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-06-05 08:07:01,693 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:07:01,693 INFO L521 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:07:01,894 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 435 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable439 [2021-06-05 08:07:01,894 INFO L430 AbstractCegarLoop]: === Iteration 441 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:07:01,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:07:01,894 INFO L82 PathProgramCache]: Analyzing trace with hash -839634922, now seen corresponding path program 432 times [2021-06-05 08:07:01,894 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:07:01,894 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937912598] [2021-06-05 08:07:01,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:07:01,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:07:02,325 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:07:02,325 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:07:02,325 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937912598] [2021-06-05 08:07:02,325 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937912598] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:07:02,325 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [511628789] [2021-06-05 08:07:02,326 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 436 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 436 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:07:02,404 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2021-06-05 08:07:02,404 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:07:02,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 36 conjunts are in the unsatisfiable core [2021-06-05 08:07:02,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:07:02,625 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:07:02,626 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [511628789] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:07:02,626 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:07:02,626 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 36 [2021-06-05 08:07:02,626 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095510086] [2021-06-05 08:07:02,626 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-06-05 08:07:02,626 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:07:02,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-06-05 08:07:02,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=267, Invalid=993, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 08:07:02,626 INFO L87 Difference]: Start difference. First operand 5978 states and 16883 transitions. Second operand has 36 states, 36 states have (on average 5.055555555555555) internal successors, (182), 36 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:03,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:07:03,340 INFO L93 Difference]: Finished difference Result 8446 states and 21947 transitions. [2021-06-05 08:07:03,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-05 08:07:03,340 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 5.055555555555555) internal successors, (182), 36 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 180 [2021-06-05 08:07:03,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:07:03,349 INFO L225 Difference]: With dead ends: 8446 [2021-06-05 08:07:03,349 INFO L226 Difference]: Without dead ends: 8176 [2021-06-05 08:07:03,350 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 920 ImplicationChecksByTransitivity, 936.8ms TimeCoverageRelationStatistics Valid=1373, Invalid=3739, Unknown=0, NotChecked=0, Total=5112 [2021-06-05 08:07:03,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8176 states. [2021-06-05 08:07:03,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8176 to 5978. [2021-06-05 08:07:03,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5978 states, 5977 states have (on average 2.824661201271541) internal successors, (16883), 5977 states have internal predecessors, (16883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:03,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5978 states to 5978 states and 16883 transitions. [2021-06-05 08:07:03,425 INFO L78 Accepts]: Start accepts. Automaton has 5978 states and 16883 transitions. Word has length 180 [2021-06-05 08:07:03,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:07:03,425 INFO L482 AbstractCegarLoop]: Abstraction has 5978 states and 16883 transitions. [2021-06-05 08:07:03,425 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 5.055555555555555) internal successors, (182), 36 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:03,425 INFO L276 IsEmpty]: Start isEmpty. Operand 5978 states and 16883 transitions. [2021-06-05 08:07:03,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-06-05 08:07:03,430 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:07:03,430 INFO L521 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:07:03,630 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable440,436 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:07:03,631 INFO L430 AbstractCegarLoop]: === Iteration 442 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:07:03,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:07:03,631 INFO L82 PathProgramCache]: Analyzing trace with hash 1590602500, now seen corresponding path program 433 times [2021-06-05 08:07:03,631 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:07:03,631 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237115478] [2021-06-05 08:07:03,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:07:03,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:07:03,995 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:07:03,996 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:07:03,996 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237115478] [2021-06-05 08:07:03,996 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237115478] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:07:03,996 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1793093559] [2021-06-05 08:07:03,996 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 437 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 437 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:07:04,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:07:04,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 36 conjunts are in the unsatisfiable core [2021-06-05 08:07:04,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:07:04,265 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:07:04,265 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1793093559] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:07:04,265 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:07:04,265 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 35 [2021-06-05 08:07:04,266 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212019898] [2021-06-05 08:07:04,266 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-06-05 08:07:04,266 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:07:04,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-06-05 08:07:04,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=252, Invalid=938, Unknown=0, NotChecked=0, Total=1190 [2021-06-05 08:07:04,266 INFO L87 Difference]: Start difference. First operand 5978 states and 16883 transitions. Second operand has 35 states, 35 states have (on average 5.142857142857143) internal successors, (180), 35 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:04,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:07:04,971 INFO L93 Difference]: Finished difference Result 8421 states and 21897 transitions. [2021-06-05 08:07:04,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-05 08:07:04,972 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 5.142857142857143) internal successors, (180), 35 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 180 [2021-06-05 08:07:04,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:07:04,979 INFO L225 Difference]: With dead ends: 8421 [2021-06-05 08:07:04,979 INFO L226 Difference]: Without dead ends: 8151 [2021-06-05 08:07:04,979 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 904 ImplicationChecksByTransitivity, 829.4ms TimeCoverageRelationStatistics Valid=1281, Invalid=3549, Unknown=0, NotChecked=0, Total=4830 [2021-06-05 08:07:04,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8151 states. [2021-06-05 08:07:05,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8151 to 5978. [2021-06-05 08:07:05,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5978 states, 5977 states have (on average 2.824661201271541) internal successors, (16883), 5977 states have internal predecessors, (16883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:05,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5978 states to 5978 states and 16883 transitions. [2021-06-05 08:07:05,039 INFO L78 Accepts]: Start accepts. Automaton has 5978 states and 16883 transitions. Word has length 180 [2021-06-05 08:07:05,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:07:05,039 INFO L482 AbstractCegarLoop]: Abstraction has 5978 states and 16883 transitions. [2021-06-05 08:07:05,039 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 5.142857142857143) internal successors, (180), 35 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:05,039 INFO L276 IsEmpty]: Start isEmpty. Operand 5978 states and 16883 transitions. [2021-06-05 08:07:05,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-06-05 08:07:05,043 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:07:05,043 INFO L521 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:07:05,243 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 437 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable441 [2021-06-05 08:07:05,244 INFO L430 AbstractCegarLoop]: === Iteration 443 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:07:05,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:07:05,244 INFO L82 PathProgramCache]: Analyzing trace with hash -2006649388, now seen corresponding path program 434 times [2021-06-05 08:07:05,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:07:05,244 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948747331] [2021-06-05 08:07:05,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:07:05,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:07:05,630 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:07:05,631 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:07:05,631 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948747331] [2021-06-05 08:07:05,631 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948747331] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:07:05,631 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1024910956] [2021-06-05 08:07:05,631 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 438 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 438 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:07:05,696 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 08:07:05,697 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:07:05,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 36 conjunts are in the unsatisfiable core [2021-06-05 08:07:05,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:07:05,917 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:07:05,917 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1024910956] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:07:05,917 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:07:05,917 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 36 [2021-06-05 08:07:05,917 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174404553] [2021-06-05 08:07:05,917 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-06-05 08:07:05,917 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:07:05,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-06-05 08:07:05,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=242, Invalid=1018, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 08:07:05,918 INFO L87 Difference]: Start difference. First operand 5978 states and 16883 transitions. Second operand has 36 states, 36 states have (on average 5.055555555555555) internal successors, (182), 36 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:06,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:07:06,704 INFO L93 Difference]: Finished difference Result 8371 states and 21797 transitions. [2021-06-05 08:07:06,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-06-05 08:07:06,704 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 5.055555555555555) internal successors, (182), 36 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 180 [2021-06-05 08:07:06,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:07:06,713 INFO L225 Difference]: With dead ends: 8371 [2021-06-05 08:07:06,713 INFO L226 Difference]: Without dead ends: 8101 [2021-06-05 08:07:06,713 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1020 ImplicationChecksByTransitivity, 938.5ms TimeCoverageRelationStatistics Valid=1376, Invalid=4026, Unknown=0, NotChecked=0, Total=5402 [2021-06-05 08:07:06,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8101 states. [2021-06-05 08:07:06,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8101 to 5978. [2021-06-05 08:07:06,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5978 states, 5977 states have (on average 2.824661201271541) internal successors, (16883), 5977 states have internal predecessors, (16883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:06,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5978 states to 5978 states and 16883 transitions. [2021-06-05 08:07:06,780 INFO L78 Accepts]: Start accepts. Automaton has 5978 states and 16883 transitions. Word has length 180 [2021-06-05 08:07:06,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:07:06,780 INFO L482 AbstractCegarLoop]: Abstraction has 5978 states and 16883 transitions. [2021-06-05 08:07:06,780 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 5.055555555555555) internal successors, (182), 36 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:06,780 INFO L276 IsEmpty]: Start isEmpty. Operand 5978 states and 16883 transitions. [2021-06-05 08:07:06,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-06-05 08:07:06,785 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:07:06,785 INFO L521 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:07:06,991 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 438 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable442 [2021-06-05 08:07:06,991 INFO L430 AbstractCegarLoop]: === Iteration 444 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:07:06,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:07:06,992 INFO L82 PathProgramCache]: Analyzing trace with hash 568435266, now seen corresponding path program 435 times [2021-06-05 08:07:06,992 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:07:06,992 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431267118] [2021-06-05 08:07:06,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:07:07,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:07:07,352 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:07:07,352 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:07:07,352 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431267118] [2021-06-05 08:07:07,352 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431267118] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:07:07,352 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1254426702] [2021-06-05 08:07:07,352 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 439 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 439 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:07:07,431 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2021-06-05 08:07:07,432 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:07:07,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 36 conjunts are in the unsatisfiable core [2021-06-05 08:07:07,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:07:07,663 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:07:07,664 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1254426702] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:07:07,664 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:07:07,664 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 35 [2021-06-05 08:07:07,664 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733775332] [2021-06-05 08:07:07,664 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-06-05 08:07:07,664 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:07:07,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-06-05 08:07:07,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=960, Unknown=0, NotChecked=0, Total=1190 [2021-06-05 08:07:07,664 INFO L87 Difference]: Start difference. First operand 5978 states and 16883 transitions. Second operand has 35 states, 35 states have (on average 5.142857142857143) internal successors, (180), 35 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:08,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:07:08,453 INFO L93 Difference]: Finished difference Result 8321 states and 21697 transitions. [2021-06-05 08:07:08,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-05 08:07:08,453 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 5.142857142857143) internal successors, (180), 35 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 180 [2021-06-05 08:07:08,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:07:08,461 INFO L225 Difference]: With dead ends: 8321 [2021-06-05 08:07:08,461 INFO L226 Difference]: Without dead ends: 8051 [2021-06-05 08:07:08,462 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1002 ImplicationChecksByTransitivity, 858.5ms TimeCoverageRelationStatistics Valid=1292, Invalid=3820, Unknown=0, NotChecked=0, Total=5112 [2021-06-05 08:07:08,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8051 states. [2021-06-05 08:07:08,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8051 to 5978. [2021-06-05 08:07:08,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5978 states, 5977 states have (on average 2.824661201271541) internal successors, (16883), 5977 states have internal predecessors, (16883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:08,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5978 states to 5978 states and 16883 transitions. [2021-06-05 08:07:08,526 INFO L78 Accepts]: Start accepts. Automaton has 5978 states and 16883 transitions. Word has length 180 [2021-06-05 08:07:08,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:07:08,527 INFO L482 AbstractCegarLoop]: Abstraction has 5978 states and 16883 transitions. [2021-06-05 08:07:08,527 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 5.142857142857143) internal successors, (180), 35 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:08,527 INFO L276 IsEmpty]: Start isEmpty. Operand 5978 states and 16883 transitions. [2021-06-05 08:07:08,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-06-05 08:07:08,531 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:07:08,531 INFO L521 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:07:08,731 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 439 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable443 [2021-06-05 08:07:08,731 INFO L430 AbstractCegarLoop]: === Iteration 445 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:07:08,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:07:08,732 INFO L82 PathProgramCache]: Analyzing trace with hash 67121426, now seen corresponding path program 436 times [2021-06-05 08:07:08,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:07:08,732 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068857621] [2021-06-05 08:07:08,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:07:08,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:07:09,125 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:07:09,125 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:07:09,125 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068857621] [2021-06-05 08:07:09,125 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068857621] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:07:09,125 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1472455255] [2021-06-05 08:07:09,125 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 440 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 440 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:07:09,191 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 08:07:09,192 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:07:09,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 36 conjunts are in the unsatisfiable core [2021-06-05 08:07:09,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:07:09,410 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:07:09,411 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1472455255] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:07:09,411 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:07:09,411 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 36 [2021-06-05 08:07:09,411 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841748242] [2021-06-05 08:07:09,411 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-06-05 08:07:09,411 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:07:09,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-06-05 08:07:09,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=221, Invalid=1039, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 08:07:09,412 INFO L87 Difference]: Start difference. First operand 5978 states and 16883 transitions. Second operand has 36 states, 36 states have (on average 5.055555555555555) internal successors, (182), 36 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:10,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:07:10,331 INFO L93 Difference]: Finished difference Result 8271 states and 21597 transitions. [2021-06-05 08:07:10,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-06-05 08:07:10,331 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 5.055555555555555) internal successors, (182), 36 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 180 [2021-06-05 08:07:10,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:07:10,338 INFO L225 Difference]: With dead ends: 8271 [2021-06-05 08:07:10,338 INFO L226 Difference]: Without dead ends: 8001 [2021-06-05 08:07:10,339 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1125 ImplicationChecksByTransitivity, 1010.5ms TimeCoverageRelationStatistics Valid=1395, Invalid=4305, Unknown=0, NotChecked=0, Total=5700 [2021-06-05 08:07:10,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8001 states. [2021-06-05 08:07:10,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8001 to 5978. [2021-06-05 08:07:10,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5978 states, 5977 states have (on average 2.824661201271541) internal successors, (16883), 5977 states have internal predecessors, (16883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:10,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5978 states to 5978 states and 16883 transitions. [2021-06-05 08:07:10,398 INFO L78 Accepts]: Start accepts. Automaton has 5978 states and 16883 transitions. Word has length 180 [2021-06-05 08:07:10,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:07:10,398 INFO L482 AbstractCegarLoop]: Abstraction has 5978 states and 16883 transitions. [2021-06-05 08:07:10,399 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 5.055555555555555) internal successors, (182), 36 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:10,399 INFO L276 IsEmpty]: Start isEmpty. Operand 5978 states and 16883 transitions. [2021-06-05 08:07:10,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-06-05 08:07:10,403 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:07:10,403 INFO L521 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:07:10,603 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 440 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable444 [2021-06-05 08:07:10,603 INFO L430 AbstractCegarLoop]: === Iteration 446 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:07:10,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:07:10,604 INFO L82 PathProgramCache]: Analyzing trace with hash 543616768, now seen corresponding path program 437 times [2021-06-05 08:07:10,604 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:07:10,604 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030868297] [2021-06-05 08:07:10,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:07:10,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:07:10,981 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:07:10,981 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:07:10,981 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030868297] [2021-06-05 08:07:10,981 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030868297] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:07:10,981 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1351650982] [2021-06-05 08:07:10,981 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 441 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 441 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:07:11,050 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2021-06-05 08:07:11,050 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:07:11,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 36 conjunts are in the unsatisfiable core [2021-06-05 08:07:11,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:07:11,257 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:07:11,257 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1351650982] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:07:11,257 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:07:11,257 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 35 [2021-06-05 08:07:11,257 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790438155] [2021-06-05 08:07:11,257 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-06-05 08:07:11,257 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:07:11,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-06-05 08:07:11,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=978, Unknown=0, NotChecked=0, Total=1190 [2021-06-05 08:07:11,258 INFO L87 Difference]: Start difference. First operand 5978 states and 16883 transitions. Second operand has 35 states, 35 states have (on average 5.142857142857143) internal successors, (180), 35 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:12,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:07:12,072 INFO L93 Difference]: Finished difference Result 8221 states and 21497 transitions. [2021-06-05 08:07:12,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-05 08:07:12,072 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 5.142857142857143) internal successors, (180), 35 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 180 [2021-06-05 08:07:12,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:07:12,080 INFO L225 Difference]: With dead ends: 8221 [2021-06-05 08:07:12,080 INFO L226 Difference]: Without dead ends: 7951 [2021-06-05 08:07:12,081 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1104 ImplicationChecksByTransitivity, 880.7ms TimeCoverageRelationStatistics Valid=1319, Invalid=4083, Unknown=0, NotChecked=0, Total=5402 [2021-06-05 08:07:12,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7951 states. [2021-06-05 08:07:12,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7951 to 5978. [2021-06-05 08:07:12,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5978 states, 5977 states have (on average 2.824661201271541) internal successors, (16883), 5977 states have internal predecessors, (16883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:12,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5978 states to 5978 states and 16883 transitions. [2021-06-05 08:07:12,147 INFO L78 Accepts]: Start accepts. Automaton has 5978 states and 16883 transitions. Word has length 180 [2021-06-05 08:07:12,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:07:12,148 INFO L482 AbstractCegarLoop]: Abstraction has 5978 states and 16883 transitions. [2021-06-05 08:07:12,148 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 5.142857142857143) internal successors, (180), 35 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:12,148 INFO L276 IsEmpty]: Start isEmpty. Operand 5978 states and 16883 transitions. [2021-06-05 08:07:12,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-06-05 08:07:12,152 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:07:12,152 INFO L521 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:07:12,367 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 441 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable445 [2021-06-05 08:07:12,367 INFO L430 AbstractCegarLoop]: === Iteration 447 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:07:12,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:07:12,367 INFO L82 PathProgramCache]: Analyzing trace with hash 2010300880, now seen corresponding path program 438 times [2021-06-05 08:07:12,367 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:07:12,367 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405086259] [2021-06-05 08:07:12,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:07:12,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:07:12,729 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:07:12,729 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:07:12,730 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405086259] [2021-06-05 08:07:12,730 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405086259] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:07:12,730 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [185826368] [2021-06-05 08:07:12,730 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 442 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 442 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:07:12,808 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2021-06-05 08:07:12,809 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:07:12,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 36 conjunts are in the unsatisfiable core [2021-06-05 08:07:12,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:07:13,061 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:07:13,061 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [185826368] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:07:13,061 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:07:13,061 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 36 [2021-06-05 08:07:13,061 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111191949] [2021-06-05 08:07:13,061 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-06-05 08:07:13,061 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:07:13,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-06-05 08:07:13,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=1056, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 08:07:13,062 INFO L87 Difference]: Start difference. First operand 5978 states and 16883 transitions. Second operand has 36 states, 36 states have (on average 5.055555555555555) internal successors, (182), 36 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:13,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:07:13,953 INFO L93 Difference]: Finished difference Result 8171 states and 21397 transitions. [2021-06-05 08:07:13,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-06-05 08:07:13,954 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 5.055555555555555) internal successors, (182), 36 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 180 [2021-06-05 08:07:13,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:07:13,962 INFO L225 Difference]: With dead ends: 8171 [2021-06-05 08:07:13,962 INFO L226 Difference]: Without dead ends: 7901 [2021-06-05 08:07:13,963 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1234 ImplicationChecksByTransitivity, 1051.3ms TimeCoverageRelationStatistics Valid=1430, Invalid=4576, Unknown=0, NotChecked=0, Total=6006 [2021-06-05 08:07:13,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7901 states. [2021-06-05 08:07:14,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7901 to 5978. [2021-06-05 08:07:14,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5978 states, 5977 states have (on average 2.824661201271541) internal successors, (16883), 5977 states have internal predecessors, (16883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:14,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5978 states to 5978 states and 16883 transitions. [2021-06-05 08:07:14,025 INFO L78 Accepts]: Start accepts. Automaton has 5978 states and 16883 transitions. Word has length 180 [2021-06-05 08:07:14,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:07:14,025 INFO L482 AbstractCegarLoop]: Abstraction has 5978 states and 16883 transitions. [2021-06-05 08:07:14,025 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 5.055555555555555) internal successors, (182), 36 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:14,025 INFO L276 IsEmpty]: Start isEmpty. Operand 5978 states and 16883 transitions. [2021-06-05 08:07:14,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-06-05 08:07:14,029 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:07:14,030 INFO L521 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:07:14,230 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable446,442 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:07:14,230 INFO L430 AbstractCegarLoop]: === Iteration 448 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:07:14,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:07:14,230 INFO L82 PathProgramCache]: Analyzing trace with hash 1875079486, now seen corresponding path program 439 times [2021-06-05 08:07:14,230 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:07:14,230 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045388953] [2021-06-05 08:07:14,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:07:14,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:07:14,572 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:07:14,572 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:07:14,572 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045388953] [2021-06-05 08:07:14,573 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045388953] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:07:14,573 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [443168478] [2021-06-05 08:07:14,573 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 443 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 443 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:07:14,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:07:14,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 36 conjunts are in the unsatisfiable core [2021-06-05 08:07:14,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:07:14,844 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:07:14,844 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [443168478] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:07:14,844 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:07:14,844 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 35 [2021-06-05 08:07:14,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20991312] [2021-06-05 08:07:14,845 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-06-05 08:07:14,845 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:07:14,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-06-05 08:07:14,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=992, Unknown=0, NotChecked=0, Total=1190 [2021-06-05 08:07:14,845 INFO L87 Difference]: Start difference. First operand 5978 states and 16883 transitions. Second operand has 35 states, 35 states have (on average 5.142857142857143) internal successors, (180), 35 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:15,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:07:15,729 INFO L93 Difference]: Finished difference Result 8121 states and 21297 transitions. [2021-06-05 08:07:15,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-06-05 08:07:15,729 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 5.142857142857143) internal successors, (180), 35 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 180 [2021-06-05 08:07:15,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:07:15,736 INFO L225 Difference]: With dead ends: 8121 [2021-06-05 08:07:15,736 INFO L226 Difference]: Without dead ends: 7851 [2021-06-05 08:07:15,736 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1210 ImplicationChecksByTransitivity, 906.1ms TimeCoverageRelationStatistics Valid=1362, Invalid=4338, Unknown=0, NotChecked=0, Total=5700 [2021-06-05 08:07:15,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7851 states. [2021-06-05 08:07:15,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7851 to 5978. [2021-06-05 08:07:15,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5978 states, 5977 states have (on average 2.824661201271541) internal successors, (16883), 5977 states have internal predecessors, (16883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:15,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5978 states to 5978 states and 16883 transitions. [2021-06-05 08:07:15,797 INFO L78 Accepts]: Start accepts. Automaton has 5978 states and 16883 transitions. Word has length 180 [2021-06-05 08:07:15,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:07:15,797 INFO L482 AbstractCegarLoop]: Abstraction has 5978 states and 16883 transitions. [2021-06-05 08:07:15,798 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 5.142857142857143) internal successors, (180), 35 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:15,798 INFO L276 IsEmpty]: Start isEmpty. Operand 5978 states and 16883 transitions. [2021-06-05 08:07:15,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-06-05 08:07:15,802 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:07:15,802 INFO L521 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:07:16,002 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 443 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable447 [2021-06-05 08:07:16,002 INFO L430 AbstractCegarLoop]: === Iteration 449 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:07:16,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:07:16,003 INFO L82 PathProgramCache]: Analyzing trace with hash 998344718, now seen corresponding path program 440 times [2021-06-05 08:07:16,003 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:07:16,003 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885785287] [2021-06-05 08:07:16,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:07:16,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:07:16,357 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:07:16,357 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:07:16,357 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885785287] [2021-06-05 08:07:16,357 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885785287] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:07:16,358 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1519909589] [2021-06-05 08:07:16,358 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 444 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 444 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:07:16,428 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 08:07:16,428 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:07:16,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 36 conjunts are in the unsatisfiable core [2021-06-05 08:07:16,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:07:16,643 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:07:16,643 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1519909589] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:07:16,643 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:07:16,643 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 36 [2021-06-05 08:07:16,643 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607466328] [2021-06-05 08:07:16,643 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-06-05 08:07:16,643 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:07:16,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-06-05 08:07:16,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=1069, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 08:07:16,644 INFO L87 Difference]: Start difference. First operand 5978 states and 16883 transitions. Second operand has 36 states, 36 states have (on average 5.055555555555555) internal successors, (182), 36 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:17,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:07:17,673 INFO L93 Difference]: Finished difference Result 8071 states and 21197 transitions. [2021-06-05 08:07:17,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-06-05 08:07:17,673 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 5.055555555555555) internal successors, (182), 36 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 180 [2021-06-05 08:07:17,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:07:17,682 INFO L225 Difference]: With dead ends: 8071 [2021-06-05 08:07:17,682 INFO L226 Difference]: Without dead ends: 7801 [2021-06-05 08:07:17,683 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1347 ImplicationChecksByTransitivity, 1059.7ms TimeCoverageRelationStatistics Valid=1481, Invalid=4839, Unknown=0, NotChecked=0, Total=6320 [2021-06-05 08:07:17,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7801 states. [2021-06-05 08:07:17,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7801 to 5978. [2021-06-05 08:07:17,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5978 states, 5977 states have (on average 2.824661201271541) internal successors, (16883), 5977 states have internal predecessors, (16883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:17,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5978 states to 5978 states and 16883 transitions. [2021-06-05 08:07:17,753 INFO L78 Accepts]: Start accepts. Automaton has 5978 states and 16883 transitions. Word has length 180 [2021-06-05 08:07:17,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:07:17,753 INFO L482 AbstractCegarLoop]: Abstraction has 5978 states and 16883 transitions. [2021-06-05 08:07:17,753 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 5.055555555555555) internal successors, (182), 36 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:17,754 INFO L276 IsEmpty]: Start isEmpty. Operand 5978 states and 16883 transitions. [2021-06-05 08:07:17,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-06-05 08:07:17,758 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:07:17,758 INFO L521 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:07:17,958 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 444 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable448 [2021-06-05 08:07:17,959 INFO L430 AbstractCegarLoop]: === Iteration 450 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:07:17,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:07:17,959 INFO L82 PathProgramCache]: Analyzing trace with hash -738981636, now seen corresponding path program 441 times [2021-06-05 08:07:17,959 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:07:17,959 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371372242] [2021-06-05 08:07:17,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:07:17,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:07:18,297 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:07:18,297 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:07:18,297 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371372242] [2021-06-05 08:07:18,297 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371372242] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:07:18,298 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1199978942] [2021-06-05 08:07:18,298 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 445 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 445 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:07:18,428 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2021-06-05 08:07:18,429 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:07:18,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 36 conjunts are in the unsatisfiable core [2021-06-05 08:07:18,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:07:18,651 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:07:18,652 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1199978942] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:07:18,652 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:07:18,652 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 35 [2021-06-05 08:07:18,652 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41675113] [2021-06-05 08:07:18,652 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-06-05 08:07:18,652 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:07:18,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-06-05 08:07:18,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=1002, Unknown=0, NotChecked=0, Total=1190 [2021-06-05 08:07:18,652 INFO L87 Difference]: Start difference. First operand 5978 states and 16883 transitions. Second operand has 35 states, 35 states have (on average 5.142857142857143) internal successors, (180), 35 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:19,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:07:19,522 INFO L93 Difference]: Finished difference Result 8021 states and 21097 transitions. [2021-06-05 08:07:19,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-06-05 08:07:19,523 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 5.142857142857143) internal successors, (180), 35 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 180 [2021-06-05 08:07:19,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:07:19,531 INFO L225 Difference]: With dead ends: 8021 [2021-06-05 08:07:19,531 INFO L226 Difference]: Without dead ends: 7751 [2021-06-05 08:07:19,532 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1320 ImplicationChecksByTransitivity, 939.9ms TimeCoverageRelationStatistics Valid=1421, Invalid=4585, Unknown=0, NotChecked=0, Total=6006 [2021-06-05 08:07:19,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7751 states. [2021-06-05 08:07:19,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7751 to 5978. [2021-06-05 08:07:19,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5978 states, 5977 states have (on average 2.824661201271541) internal successors, (16883), 5977 states have internal predecessors, (16883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:19,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5978 states to 5978 states and 16883 transitions. [2021-06-05 08:07:19,596 INFO L78 Accepts]: Start accepts. Automaton has 5978 states and 16883 transitions. Word has length 180 [2021-06-05 08:07:19,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:07:19,596 INFO L482 AbstractCegarLoop]: Abstraction has 5978 states and 16883 transitions. [2021-06-05 08:07:19,596 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 5.142857142857143) internal successors, (180), 35 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:19,596 INFO L276 IsEmpty]: Start isEmpty. Operand 5978 states and 16883 transitions. [2021-06-05 08:07:19,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-06-05 08:07:19,601 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:07:19,601 INFO L521 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:07:19,801 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 445 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable449 [2021-06-05 08:07:19,801 INFO L430 AbstractCegarLoop]: === Iteration 451 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:07:19,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:07:19,802 INFO L82 PathProgramCache]: Analyzing trace with hash 625566668, now seen corresponding path program 442 times [2021-06-05 08:07:19,802 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:07:19,802 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537307538] [2021-06-05 08:07:19,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:07:19,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:07:20,143 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:07:20,143 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:07:20,144 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537307538] [2021-06-05 08:07:20,144 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537307538] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:07:20,144 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1323149220] [2021-06-05 08:07:20,144 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 446 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 446 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:07:20,209 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 08:07:20,209 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:07:20,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 36 conjunts are in the unsatisfiable core [2021-06-05 08:07:20,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:07:20,422 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:07:20,422 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1323149220] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:07:20,422 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:07:20,422 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 36 [2021-06-05 08:07:20,422 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706054421] [2021-06-05 08:07:20,423 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-06-05 08:07:20,423 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:07:20,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-06-05 08:07:20,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=1078, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 08:07:20,423 INFO L87 Difference]: Start difference. First operand 5978 states and 16883 transitions. Second operand has 36 states, 36 states have (on average 5.055555555555555) internal successors, (182), 36 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:21,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:07:21,479 INFO L93 Difference]: Finished difference Result 7971 states and 20997 transitions. [2021-06-05 08:07:21,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-06-05 08:07:21,479 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 5.055555555555555) internal successors, (182), 36 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 180 [2021-06-05 08:07:21,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:07:21,486 INFO L225 Difference]: With dead ends: 7971 [2021-06-05 08:07:21,486 INFO L226 Difference]: Without dead ends: 7701 [2021-06-05 08:07:21,486 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1464 ImplicationChecksByTransitivity, 1130.7ms TimeCoverageRelationStatistics Valid=1548, Invalid=5094, Unknown=0, NotChecked=0, Total=6642 [2021-06-05 08:07:21,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7701 states. [2021-06-05 08:07:21,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7701 to 5978. [2021-06-05 08:07:21,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5978 states, 5977 states have (on average 2.824661201271541) internal successors, (16883), 5977 states have internal predecessors, (16883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:21,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5978 states to 5978 states and 16883 transitions. [2021-06-05 08:07:21,546 INFO L78 Accepts]: Start accepts. Automaton has 5978 states and 16883 transitions. Word has length 180 [2021-06-05 08:07:21,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:07:21,546 INFO L482 AbstractCegarLoop]: Abstraction has 5978 states and 16883 transitions. [2021-06-05 08:07:21,546 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 5.055555555555555) internal successors, (182), 36 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:21,546 INFO L276 IsEmpty]: Start isEmpty. Operand 5978 states and 16883 transitions. [2021-06-05 08:07:21,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-06-05 08:07:21,550 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:07:21,550 INFO L521 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:07:21,750 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable450,446 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:07:21,751 INFO L430 AbstractCegarLoop]: === Iteration 452 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:07:21,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:07:21,751 INFO L82 PathProgramCache]: Analyzing trace with hash -1651665350, now seen corresponding path program 443 times [2021-06-05 08:07:21,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:07:21,751 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075444558] [2021-06-05 08:07:21,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:07:21,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:07:22,077 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:07:22,077 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:07:22,077 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075444558] [2021-06-05 08:07:22,077 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075444558] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:07:22,077 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2071653286] [2021-06-05 08:07:22,077 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 447 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 447 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:07:22,147 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2021-06-05 08:07:22,147 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:07:22,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 36 conjunts are in the unsatisfiable core [2021-06-05 08:07:22,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:07:22,342 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:07:22,342 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2071653286] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:07:22,343 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:07:22,343 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 35 [2021-06-05 08:07:22,343 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162930517] [2021-06-05 08:07:22,343 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-06-05 08:07:22,343 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:07:22,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-06-05 08:07:22,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=1008, Unknown=0, NotChecked=0, Total=1190 [2021-06-05 08:07:22,343 INFO L87 Difference]: Start difference. First operand 5978 states and 16883 transitions. Second operand has 35 states, 35 states have (on average 5.142857142857143) internal successors, (180), 35 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:23,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:07:23,255 INFO L93 Difference]: Finished difference Result 7921 states and 20897 transitions. [2021-06-05 08:07:23,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-06-05 08:07:23,255 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 5.142857142857143) internal successors, (180), 35 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 180 [2021-06-05 08:07:23,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:07:23,263 INFO L225 Difference]: With dead ends: 7921 [2021-06-05 08:07:23,263 INFO L226 Difference]: Without dead ends: 7651 [2021-06-05 08:07:23,264 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1434 ImplicationChecksByTransitivity, 965.0ms TimeCoverageRelationStatistics Valid=1496, Invalid=4824, Unknown=0, NotChecked=0, Total=6320 [2021-06-05 08:07:23,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7651 states. [2021-06-05 08:07:23,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7651 to 5978. [2021-06-05 08:07:23,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5978 states, 5977 states have (on average 2.824661201271541) internal successors, (16883), 5977 states have internal predecessors, (16883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:23,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5978 states to 5978 states and 16883 transitions. [2021-06-05 08:07:23,329 INFO L78 Accepts]: Start accepts. Automaton has 5978 states and 16883 transitions. Word has length 180 [2021-06-05 08:07:23,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:07:23,330 INFO L482 AbstractCegarLoop]: Abstraction has 5978 states and 16883 transitions. [2021-06-05 08:07:23,330 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 5.142857142857143) internal successors, (180), 35 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:23,330 INFO L276 IsEmpty]: Start isEmpty. Operand 5978 states and 16883 transitions. [2021-06-05 08:07:23,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-06-05 08:07:23,334 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:07:23,334 INFO L521 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:07:23,549 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable451,447 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:07:23,549 INFO L430 AbstractCegarLoop]: === Iteration 453 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:07:23,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:07:23,549 INFO L82 PathProgramCache]: Analyzing trace with hash 1744778506, now seen corresponding path program 444 times [2021-06-05 08:07:23,549 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:07:23,549 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038165265] [2021-06-05 08:07:23,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:07:23,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:07:23,918 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:07:23,919 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:07:23,919 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038165265] [2021-06-05 08:07:23,919 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038165265] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:07:23,919 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [490449524] [2021-06-05 08:07:23,919 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 448 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 448 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:07:23,998 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2021-06-05 08:07:23,999 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:07:24,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 36 conjunts are in the unsatisfiable core [2021-06-05 08:07:24,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:07:24,211 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:07:24,212 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [490449524] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:07:24,212 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:07:24,212 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 36 [2021-06-05 08:07:24,212 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613500746] [2021-06-05 08:07:24,212 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-06-05 08:07:24,212 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:07:24,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-06-05 08:07:24,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=1083, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 08:07:24,212 INFO L87 Difference]: Start difference. First operand 5978 states and 16883 transitions. Second operand has 36 states, 36 states have (on average 5.055555555555555) internal successors, (182), 36 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:25,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:07:25,277 INFO L93 Difference]: Finished difference Result 7871 states and 20797 transitions. [2021-06-05 08:07:25,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-06-05 08:07:25,277 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 5.055555555555555) internal successors, (182), 36 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 180 [2021-06-05 08:07:25,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:07:25,285 INFO L225 Difference]: With dead ends: 7871 [2021-06-05 08:07:25,285 INFO L226 Difference]: Without dead ends: 7601 [2021-06-05 08:07:25,286 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1585 ImplicationChecksByTransitivity, 1174.6ms TimeCoverageRelationStatistics Valid=1631, Invalid=5341, Unknown=0, NotChecked=0, Total=6972 [2021-06-05 08:07:25,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7601 states. [2021-06-05 08:07:25,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7601 to 5978. [2021-06-05 08:07:25,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5978 states, 5977 states have (on average 2.824661201271541) internal successors, (16883), 5977 states have internal predecessors, (16883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:25,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5978 states to 5978 states and 16883 transitions. [2021-06-05 08:07:25,354 INFO L78 Accepts]: Start accepts. Automaton has 5978 states and 16883 transitions. Word has length 180 [2021-06-05 08:07:25,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:07:25,354 INFO L482 AbstractCegarLoop]: Abstraction has 5978 states and 16883 transitions. [2021-06-05 08:07:25,354 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 5.055555555555555) internal successors, (182), 36 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:25,354 INFO L276 IsEmpty]: Start isEmpty. Operand 5978 states and 16883 transitions. [2021-06-05 08:07:25,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-06-05 08:07:25,359 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:07:25,359 INFO L521 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:07:25,560 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 448 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable452 [2021-06-05 08:07:25,560 INFO L430 AbstractCegarLoop]: === Iteration 454 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:07:25,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:07:25,560 INFO L82 PathProgramCache]: Analyzing trace with hash 129825016, now seen corresponding path program 445 times [2021-06-05 08:07:25,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:07:25,560 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229872779] [2021-06-05 08:07:25,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:07:25,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:07:25,887 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:07:25,887 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:07:25,887 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229872779] [2021-06-05 08:07:25,887 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229872779] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:07:25,887 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [550343098] [2021-06-05 08:07:25,887 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 449 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 449 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:07:25,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:07:25,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 36 conjunts are in the unsatisfiable core [2021-06-05 08:07:25,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:07:26,157 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:07:26,157 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [550343098] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:07:26,157 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:07:26,157 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 35 [2021-06-05 08:07:26,157 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691460432] [2021-06-05 08:07:26,157 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-06-05 08:07:26,158 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:07:26,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-06-05 08:07:26,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=1010, Unknown=0, NotChecked=0, Total=1190 [2021-06-05 08:07:26,158 INFO L87 Difference]: Start difference. First operand 5978 states and 16883 transitions. Second operand has 35 states, 35 states have (on average 5.142857142857143) internal successors, (180), 35 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:27,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:07:27,143 INFO L93 Difference]: Finished difference Result 7821 states and 20697 transitions. [2021-06-05 08:07:27,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-06-05 08:07:27,143 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 5.142857142857143) internal successors, (180), 35 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 180 [2021-06-05 08:07:27,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:07:27,150 INFO L225 Difference]: With dead ends: 7821 [2021-06-05 08:07:27,151 INFO L226 Difference]: Without dead ends: 7551 [2021-06-05 08:07:27,151 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1552 ImplicationChecksByTransitivity, 999.4ms TimeCoverageRelationStatistics Valid=1587, Invalid=5055, Unknown=0, NotChecked=0, Total=6642 [2021-06-05 08:07:27,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7551 states. [2021-06-05 08:07:27,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7551 to 5978. [2021-06-05 08:07:27,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5978 states, 5977 states have (on average 2.824661201271541) internal successors, (16883), 5977 states have internal predecessors, (16883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:27,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5978 states to 5978 states and 16883 transitions. [2021-06-05 08:07:27,216 INFO L78 Accepts]: Start accepts. Automaton has 5978 states and 16883 transitions. Word has length 180 [2021-06-05 08:07:27,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:07:27,216 INFO L482 AbstractCegarLoop]: Abstraction has 5978 states and 16883 transitions. [2021-06-05 08:07:27,216 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 5.142857142857143) internal successors, (180), 35 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:27,216 INFO L276 IsEmpty]: Start isEmpty. Operand 5978 states and 16883 transitions. [2021-06-05 08:07:27,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-06-05 08:07:27,221 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:07:27,221 INFO L521 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:07:27,421 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable453,449 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:07:27,421 INFO L430 AbstractCegarLoop]: === Iteration 455 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:07:27,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:07:27,422 INFO L82 PathProgramCache]: Analyzing trace with hash -250618936, now seen corresponding path program 446 times [2021-06-05 08:07:27,422 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:07:27,422 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620814194] [2021-06-05 08:07:27,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:07:27,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:07:27,754 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:07:27,754 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:07:27,754 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620814194] [2021-06-05 08:07:27,754 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620814194] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:07:27,754 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [246856233] [2021-06-05 08:07:27,754 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 450 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 450 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:07:27,819 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 08:07:27,819 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:07:27,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 36 conjunts are in the unsatisfiable core [2021-06-05 08:07:27,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:07:28,030 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:07:28,030 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [246856233] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:07:28,030 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:07:28,030 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 36 [2021-06-05 08:07:28,030 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919135715] [2021-06-05 08:07:28,030 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-06-05 08:07:28,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:07:28,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-06-05 08:07:28,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=1084, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 08:07:28,031 INFO L87 Difference]: Start difference. First operand 5978 states and 16883 transitions. Second operand has 36 states, 36 states have (on average 5.055555555555555) internal successors, (182), 36 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:29,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:07:29,197 INFO L93 Difference]: Finished difference Result 7771 states and 20597 transitions. [2021-06-05 08:07:29,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-06-05 08:07:29,197 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 5.055555555555555) internal successors, (182), 36 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 180 [2021-06-05 08:07:29,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:07:29,205 INFO L225 Difference]: With dead ends: 7771 [2021-06-05 08:07:29,205 INFO L226 Difference]: Without dead ends: 7501 [2021-06-05 08:07:29,206 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1710 ImplicationChecksByTransitivity, 1196.4ms TimeCoverageRelationStatistics Valid=1730, Invalid=5580, Unknown=0, NotChecked=0, Total=7310 [2021-06-05 08:07:29,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7501 states. [2021-06-05 08:07:29,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7501 to 5978. [2021-06-05 08:07:29,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5978 states, 5977 states have (on average 2.824661201271541) internal successors, (16883), 5977 states have internal predecessors, (16883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:29,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5978 states to 5978 states and 16883 transitions. [2021-06-05 08:07:29,318 INFO L78 Accepts]: Start accepts. Automaton has 5978 states and 16883 transitions. Word has length 180 [2021-06-05 08:07:29,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:07:29,318 INFO L482 AbstractCegarLoop]: Abstraction has 5978 states and 16883 transitions. [2021-06-05 08:07:29,318 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 5.055555555555555) internal successors, (182), 36 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:29,318 INFO L276 IsEmpty]: Start isEmpty. Operand 5978 states and 16883 transitions. [2021-06-05 08:07:29,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-06-05 08:07:29,322 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:07:29,322 INFO L521 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:07:29,523 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable454,450 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:07:29,523 INFO L430 AbstractCegarLoop]: === Iteration 456 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:07:29,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:07:29,523 INFO L82 PathProgramCache]: Analyzing trace with hash 373756214, now seen corresponding path program 447 times [2021-06-05 08:07:29,523 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:07:29,523 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352338504] [2021-06-05 08:07:29,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:07:29,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:07:29,841 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:07:29,841 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:07:29,841 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352338504] [2021-06-05 08:07:29,841 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352338504] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:07:29,841 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [462667160] [2021-06-05 08:07:29,842 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 451 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 451 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:07:29,920 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2021-06-05 08:07:29,920 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:07:29,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 36 conjunts are in the unsatisfiable core [2021-06-05 08:07:29,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:07:30,111 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:07:30,111 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [462667160] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:07:30,111 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:07:30,111 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 35 [2021-06-05 08:07:30,111 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120187167] [2021-06-05 08:07:30,111 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-06-05 08:07:30,112 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:07:30,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-06-05 08:07:30,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=1008, Unknown=0, NotChecked=0, Total=1190 [2021-06-05 08:07:30,112 INFO L87 Difference]: Start difference. First operand 5978 states and 16883 transitions. Second operand has 35 states, 35 states have (on average 5.142857142857143) internal successors, (180), 35 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:31,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:07:31,099 INFO L93 Difference]: Finished difference Result 7721 states and 20497 transitions. [2021-06-05 08:07:31,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-06-05 08:07:31,100 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 5.142857142857143) internal successors, (180), 35 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 180 [2021-06-05 08:07:31,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:07:31,107 INFO L225 Difference]: With dead ends: 7721 [2021-06-05 08:07:31,107 INFO L226 Difference]: Without dead ends: 7451 [2021-06-05 08:07:31,108 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1674 ImplicationChecksByTransitivity, 1020.1ms TimeCoverageRelationStatistics Valid=1694, Invalid=5278, Unknown=0, NotChecked=0, Total=6972 [2021-06-05 08:07:31,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7451 states. [2021-06-05 08:07:31,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7451 to 5978. [2021-06-05 08:07:31,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5978 states, 5977 states have (on average 2.824661201271541) internal successors, (16883), 5977 states have internal predecessors, (16883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:31,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5978 states to 5978 states and 16883 transitions. [2021-06-05 08:07:31,177 INFO L78 Accepts]: Start accepts. Automaton has 5978 states and 16883 transitions. Word has length 180 [2021-06-05 08:07:31,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:07:31,178 INFO L482 AbstractCegarLoop]: Abstraction has 5978 states and 16883 transitions. [2021-06-05 08:07:31,178 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 5.142857142857143) internal successors, (180), 35 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:31,178 INFO L276 IsEmpty]: Start isEmpty. Operand 5978 states and 16883 transitions. [2021-06-05 08:07:31,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-06-05 08:07:31,182 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:07:31,183 INFO L521 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:07:31,383 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 451 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable455 [2021-06-05 08:07:31,383 INFO L430 AbstractCegarLoop]: === Iteration 457 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:07:31,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:07:31,383 INFO L82 PathProgramCache]: Analyzing trace with hash 1182808070, now seen corresponding path program 448 times [2021-06-05 08:07:31,383 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:07:31,383 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922472368] [2021-06-05 08:07:31,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:07:31,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:07:31,709 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:07:31,709 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:07:31,709 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922472368] [2021-06-05 08:07:31,709 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922472368] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:07:31,709 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [105509095] [2021-06-05 08:07:31,709 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 452 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 452 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:07:31,774 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 08:07:31,774 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:07:31,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 36 conjunts are in the unsatisfiable core [2021-06-05 08:07:31,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:07:31,980 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:07:31,980 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [105509095] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:07:31,980 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:07:31,980 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 36 [2021-06-05 08:07:31,980 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796955333] [2021-06-05 08:07:31,981 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-06-05 08:07:31,981 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:07:31,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-06-05 08:07:31,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=1081, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 08:07:31,981 INFO L87 Difference]: Start difference. First operand 5978 states and 16883 transitions. Second operand has 36 states, 36 states have (on average 5.055555555555555) internal successors, (182), 36 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:33,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:07:33,269 INFO L93 Difference]: Finished difference Result 7671 states and 20397 transitions. [2021-06-05 08:07:33,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-06-05 08:07:33,269 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 5.055555555555555) internal successors, (182), 36 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 180 [2021-06-05 08:07:33,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:07:33,277 INFO L225 Difference]: With dead ends: 7671 [2021-06-05 08:07:33,278 INFO L226 Difference]: Without dead ends: 7401 [2021-06-05 08:07:33,278 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1839 ImplicationChecksByTransitivity, 1236.0ms TimeCoverageRelationStatistics Valid=1845, Invalid=5811, Unknown=0, NotChecked=0, Total=7656 [2021-06-05 08:07:33,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7401 states. [2021-06-05 08:07:33,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7401 to 5978. [2021-06-05 08:07:33,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5978 states, 5977 states have (on average 2.824661201271541) internal successors, (16883), 5977 states have internal predecessors, (16883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:33,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5978 states to 5978 states and 16883 transitions. [2021-06-05 08:07:33,341 INFO L78 Accepts]: Start accepts. Automaton has 5978 states and 16883 transitions. Word has length 180 [2021-06-05 08:07:33,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:07:33,341 INFO L482 AbstractCegarLoop]: Abstraction has 5978 states and 16883 transitions. [2021-06-05 08:07:33,341 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 5.055555555555555) internal successors, (182), 36 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:33,341 INFO L276 IsEmpty]: Start isEmpty. Operand 5978 states and 16883 transitions. [2021-06-05 08:07:33,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-06-05 08:07:33,346 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:07:33,346 INFO L521 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:07:33,546 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 452 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable456 [2021-06-05 08:07:33,547 INFO L430 AbstractCegarLoop]: === Iteration 458 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:07:33,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:07:33,547 INFO L82 PathProgramCache]: Analyzing trace with hash -209142028, now seen corresponding path program 449 times [2021-06-05 08:07:33,547 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:07:33,547 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526951542] [2021-06-05 08:07:33,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:07:33,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:07:33,861 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:07:33,861 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:07:33,861 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526951542] [2021-06-05 08:07:33,861 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526951542] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:07:33,861 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [44278886] [2021-06-05 08:07:33,861 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 453 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 453 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:07:33,930 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2021-06-05 08:07:33,930 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:07:33,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 36 conjunts are in the unsatisfiable core [2021-06-05 08:07:33,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:07:34,120 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:07:34,120 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [44278886] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:07:34,120 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:07:34,120 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 35 [2021-06-05 08:07:34,121 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732936833] [2021-06-05 08:07:34,121 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-06-05 08:07:34,121 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:07:34,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-06-05 08:07:34,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=1002, Unknown=0, NotChecked=0, Total=1190 [2021-06-05 08:07:34,121 INFO L87 Difference]: Start difference. First operand 5978 states and 16883 transitions. Second operand has 35 states, 35 states have (on average 5.142857142857143) internal successors, (180), 35 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:35,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:07:35,231 INFO L93 Difference]: Finished difference Result 7621 states and 20297 transitions. [2021-06-05 08:07:35,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-06-05 08:07:35,232 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 5.142857142857143) internal successors, (180), 35 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 180 [2021-06-05 08:07:35,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:07:35,239 INFO L225 Difference]: With dead ends: 7621 [2021-06-05 08:07:35,239 INFO L226 Difference]: Without dead ends: 7351 [2021-06-05 08:07:35,239 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1800 ImplicationChecksByTransitivity, 1058.4ms TimeCoverageRelationStatistics Valid=1817, Invalid=5493, Unknown=0, NotChecked=0, Total=7310 [2021-06-05 08:07:35,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7351 states. [2021-06-05 08:07:35,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7351 to 5978. [2021-06-05 08:07:35,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5978 states, 5977 states have (on average 2.824661201271541) internal successors, (16883), 5977 states have internal predecessors, (16883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:35,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5978 states to 5978 states and 16883 transitions. [2021-06-05 08:07:35,299 INFO L78 Accepts]: Start accepts. Automaton has 5978 states and 16883 transitions. Word has length 180 [2021-06-05 08:07:35,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:07:35,299 INFO L482 AbstractCegarLoop]: Abstraction has 5978 states and 16883 transitions. [2021-06-05 08:07:35,299 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 5.142857142857143) internal successors, (180), 35 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:35,299 INFO L276 IsEmpty]: Start isEmpty. Operand 5978 states and 16883 transitions. [2021-06-05 08:07:35,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-06-05 08:07:35,304 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:07:35,304 INFO L521 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:07:35,504 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable457,453 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:07:35,504 INFO L430 AbstractCegarLoop]: === Iteration 459 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:07:35,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:07:35,505 INFO L82 PathProgramCache]: Analyzing trace with hash -454219324, now seen corresponding path program 450 times [2021-06-05 08:07:35,505 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:07:35,505 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877708410] [2021-06-05 08:07:35,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:07:35,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:07:35,826 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:07:35,827 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:07:35,827 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877708410] [2021-06-05 08:07:35,827 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877708410] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:07:35,827 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1078723907] [2021-06-05 08:07:35,827 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 454 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 454 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:07:35,905 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2021-06-05 08:07:35,906 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:07:35,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 36 conjunts are in the unsatisfiable core [2021-06-05 08:07:35,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:07:36,119 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:07:36,119 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1078723907] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:07:36,119 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:07:36,119 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 36 [2021-06-05 08:07:36,119 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778792405] [2021-06-05 08:07:36,119 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-06-05 08:07:36,119 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:07:36,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-06-05 08:07:36,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=1074, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 08:07:36,120 INFO L87 Difference]: Start difference. First operand 5978 states and 16883 transitions. Second operand has 36 states, 36 states have (on average 5.055555555555555) internal successors, (182), 36 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:37,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:07:37,446 INFO L93 Difference]: Finished difference Result 7571 states and 20197 transitions. [2021-06-05 08:07:37,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-06-05 08:07:37,447 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 5.055555555555555) internal successors, (182), 36 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 180 [2021-06-05 08:07:37,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:07:37,455 INFO L225 Difference]: With dead ends: 7571 [2021-06-05 08:07:37,455 INFO L226 Difference]: Without dead ends: 7301 [2021-06-05 08:07:37,455 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1972 ImplicationChecksByTransitivity, 1283.9ms TimeCoverageRelationStatistics Valid=1976, Invalid=6034, Unknown=0, NotChecked=0, Total=8010 [2021-06-05 08:07:37,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7301 states. [2021-06-05 08:07:37,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7301 to 5978. [2021-06-05 08:07:37,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5978 states, 5977 states have (on average 2.824661201271541) internal successors, (16883), 5977 states have internal predecessors, (16883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:37,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5978 states to 5978 states and 16883 transitions. [2021-06-05 08:07:37,516 INFO L78 Accepts]: Start accepts. Automaton has 5978 states and 16883 transitions. Word has length 180 [2021-06-05 08:07:37,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:07:37,516 INFO L482 AbstractCegarLoop]: Abstraction has 5978 states and 16883 transitions. [2021-06-05 08:07:37,516 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 5.055555555555555) internal successors, (182), 36 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:37,516 INFO L276 IsEmpty]: Start isEmpty. Operand 5978 states and 16883 transitions. [2021-06-05 08:07:37,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-06-05 08:07:37,520 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:07:37,520 INFO L521 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:07:37,721 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 454 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable458 [2021-06-05 08:07:37,721 INFO L430 AbstractCegarLoop]: === Iteration 460 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:07:37,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:07:37,721 INFO L82 PathProgramCache]: Analyzing trace with hash -831069646, now seen corresponding path program 451 times [2021-06-05 08:07:37,721 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:07:37,721 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711905168] [2021-06-05 08:07:37,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:07:37,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:07:38,071 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:07:38,071 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:07:38,071 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711905168] [2021-06-05 08:07:38,071 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711905168] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:07:38,071 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1060087315] [2021-06-05 08:07:38,071 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 455 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 455 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:07:38,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:07:38,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 36 conjunts are in the unsatisfiable core [2021-06-05 08:07:38,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:07:38,329 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:07:38,330 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1060087315] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:07:38,330 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:07:38,330 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 35 [2021-06-05 08:07:38,330 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90452129] [2021-06-05 08:07:38,330 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-06-05 08:07:38,330 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:07:38,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-06-05 08:07:38,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=992, Unknown=0, NotChecked=0, Total=1190 [2021-06-05 08:07:38,330 INFO L87 Difference]: Start difference. First operand 5978 states and 16883 transitions. Second operand has 35 states, 35 states have (on average 5.142857142857143) internal successors, (180), 35 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:39,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:07:39,474 INFO L93 Difference]: Finished difference Result 7521 states and 20097 transitions. [2021-06-05 08:07:39,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-06-05 08:07:39,474 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 5.142857142857143) internal successors, (180), 35 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 180 [2021-06-05 08:07:39,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:07:39,482 INFO L225 Difference]: With dead ends: 7521 [2021-06-05 08:07:39,482 INFO L226 Difference]: Without dead ends: 7251 [2021-06-05 08:07:39,483 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1930 ImplicationChecksByTransitivity, 1087.1ms TimeCoverageRelationStatistics Valid=1956, Invalid=5700, Unknown=0, NotChecked=0, Total=7656 [2021-06-05 08:07:39,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7251 states. [2021-06-05 08:07:39,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7251 to 5978. [2021-06-05 08:07:39,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5978 states, 5977 states have (on average 2.824661201271541) internal successors, (16883), 5977 states have internal predecessors, (16883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:39,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5978 states to 5978 states and 16883 transitions. [2021-06-05 08:07:39,549 INFO L78 Accepts]: Start accepts. Automaton has 5978 states and 16883 transitions. Word has length 180 [2021-06-05 08:07:39,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:07:39,549 INFO L482 AbstractCegarLoop]: Abstraction has 5978 states and 16883 transitions. [2021-06-05 08:07:39,549 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 5.142857142857143) internal successors, (180), 35 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:39,549 INFO L276 IsEmpty]: Start isEmpty. Operand 5978 states and 16883 transitions. [2021-06-05 08:07:39,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-06-05 08:07:39,553 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:07:39,553 INFO L521 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:07:39,754 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 455 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable459 [2021-06-05 08:07:39,754 INFO L430 AbstractCegarLoop]: === Iteration 461 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:07:39,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:07:39,754 INFO L82 PathProgramCache]: Analyzing trace with hash 495685890, now seen corresponding path program 452 times [2021-06-05 08:07:39,754 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:07:39,754 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659501181] [2021-06-05 08:07:39,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:07:39,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:07:40,073 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:07:40,074 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:07:40,074 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659501181] [2021-06-05 08:07:40,074 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659501181] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:07:40,074 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1989542301] [2021-06-05 08:07:40,074 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 456 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 456 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:07:40,139 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 08:07:40,139 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:07:40,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 36 conjunts are in the unsatisfiable core [2021-06-05 08:07:40,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:07:40,344 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:07:40,344 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1989542301] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:07:40,344 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:07:40,345 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 36 [2021-06-05 08:07:40,345 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212749863] [2021-06-05 08:07:40,345 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-06-05 08:07:40,345 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:07:40,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-06-05 08:07:40,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=1063, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 08:07:40,345 INFO L87 Difference]: Start difference. First operand 5978 states and 16883 transitions. Second operand has 36 states, 36 states have (on average 5.055555555555555) internal successors, (182), 36 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:41,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:07:41,710 INFO L93 Difference]: Finished difference Result 7471 states and 19997 transitions. [2021-06-05 08:07:41,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-06-05 08:07:41,711 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 5.055555555555555) internal successors, (182), 36 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 180 [2021-06-05 08:07:41,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:07:41,718 INFO L225 Difference]: With dead ends: 7471 [2021-06-05 08:07:41,718 INFO L226 Difference]: Without dead ends: 7201 [2021-06-05 08:07:41,719 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2109 ImplicationChecksByTransitivity, 1326.5ms TimeCoverageRelationStatistics Valid=2123, Invalid=6249, Unknown=0, NotChecked=0, Total=8372 [2021-06-05 08:07:41,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7201 states. [2021-06-05 08:07:41,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7201 to 5978. [2021-06-05 08:07:41,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5978 states, 5977 states have (on average 2.824661201271541) internal successors, (16883), 5977 states have internal predecessors, (16883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:41,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5978 states to 5978 states and 16883 transitions. [2021-06-05 08:07:41,780 INFO L78 Accepts]: Start accepts. Automaton has 5978 states and 16883 transitions. Word has length 180 [2021-06-05 08:07:41,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:07:41,780 INFO L482 AbstractCegarLoop]: Abstraction has 5978 states and 16883 transitions. [2021-06-05 08:07:41,780 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 5.055555555555555) internal successors, (182), 36 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:41,781 INFO L276 IsEmpty]: Start isEmpty. Operand 5978 states and 16883 transitions. [2021-06-05 08:07:41,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-06-05 08:07:41,785 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:07:41,785 INFO L521 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:07:41,985 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable460,456 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:07:41,985 INFO L430 AbstractCegarLoop]: === Iteration 462 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:07:41,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:07:41,986 INFO L82 PathProgramCache]: Analyzing trace with hash 949902064, now seen corresponding path program 453 times [2021-06-05 08:07:41,986 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:07:41,986 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978071210] [2021-06-05 08:07:41,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:07:41,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:07:42,309 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:07:42,309 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:07:42,310 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978071210] [2021-06-05 08:07:42,310 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978071210] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:07:42,310 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1234116497] [2021-06-05 08:07:42,310 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 457 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 457 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:07:42,391 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2021-06-05 08:07:42,392 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:07:42,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 36 conjunts are in the unsatisfiable core [2021-06-05 08:07:42,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:07:42,579 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:07:42,579 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1234116497] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:07:42,579 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:07:42,579 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 35 [2021-06-05 08:07:42,579 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268416256] [2021-06-05 08:07:42,579 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-06-05 08:07:42,579 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:07:42,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-06-05 08:07:42,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=978, Unknown=0, NotChecked=0, Total=1190 [2021-06-05 08:07:42,580 INFO L87 Difference]: Start difference. First operand 5978 states and 16883 transitions. Second operand has 35 states, 35 states have (on average 5.142857142857143) internal successors, (180), 35 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:43,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:07:43,727 INFO L93 Difference]: Finished difference Result 7421 states and 19897 transitions. [2021-06-05 08:07:43,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-06-05 08:07:43,727 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 5.142857142857143) internal successors, (180), 35 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 180 [2021-06-05 08:07:43,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:07:43,734 INFO L225 Difference]: With dead ends: 7421 [2021-06-05 08:07:43,734 INFO L226 Difference]: Without dead ends: 7151 [2021-06-05 08:07:43,734 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2064 ImplicationChecksByTransitivity, 1142.4ms TimeCoverageRelationStatistics Valid=2111, Invalid=5899, Unknown=0, NotChecked=0, Total=8010 [2021-06-05 08:07:43,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7151 states. [2021-06-05 08:07:43,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7151 to 5978. [2021-06-05 08:07:43,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5978 states, 5977 states have (on average 2.824661201271541) internal successors, (16883), 5977 states have internal predecessors, (16883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:43,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5978 states to 5978 states and 16883 transitions. [2021-06-05 08:07:43,790 INFO L78 Accepts]: Start accepts. Automaton has 5978 states and 16883 transitions. Word has length 180 [2021-06-05 08:07:43,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:07:43,791 INFO L482 AbstractCegarLoop]: Abstraction has 5978 states and 16883 transitions. [2021-06-05 08:07:43,791 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 5.142857142857143) internal successors, (180), 35 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:43,791 INFO L276 IsEmpty]: Start isEmpty. Operand 5978 states and 16883 transitions. [2021-06-05 08:07:43,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-06-05 08:07:43,795 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:07:43,795 INFO L521 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:07:43,995 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 457 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable461 [2021-06-05 08:07:43,995 INFO L430 AbstractCegarLoop]: === Iteration 463 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:07:43,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:07:43,996 INFO L82 PathProgramCache]: Analyzing trace with hash 1948798400, now seen corresponding path program 454 times [2021-06-05 08:07:43,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:07:43,996 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326324655] [2021-06-05 08:07:43,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:07:44,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:07:44,308 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:07:44,308 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:07:44,308 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326324655] [2021-06-05 08:07:44,308 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326324655] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:07:44,308 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [122098610] [2021-06-05 08:07:44,308 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 458 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 458 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:07:44,373 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 08:07:44,373 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:07:44,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 36 conjunts are in the unsatisfiable core [2021-06-05 08:07:44,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:07:44,575 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:07:44,575 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [122098610] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:07:44,576 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:07:44,576 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 36 [2021-06-05 08:07:44,576 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517653264] [2021-06-05 08:07:44,576 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-06-05 08:07:44,576 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:07:44,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-06-05 08:07:44,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=1048, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 08:07:44,576 INFO L87 Difference]: Start difference. First operand 5978 states and 16883 transitions. Second operand has 36 states, 36 states have (on average 5.055555555555555) internal successors, (182), 36 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:45,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:07:45,995 INFO L93 Difference]: Finished difference Result 7371 states and 19797 transitions. [2021-06-05 08:07:45,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-06-05 08:07:45,995 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 5.055555555555555) internal successors, (182), 36 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 180 [2021-06-05 08:07:45,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:07:46,003 INFO L225 Difference]: With dead ends: 7371 [2021-06-05 08:07:46,003 INFO L226 Difference]: Without dead ends: 7101 [2021-06-05 08:07:46,004 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2250 ImplicationChecksByTransitivity, 1376.5ms TimeCoverageRelationStatistics Valid=2286, Invalid=6456, Unknown=0, NotChecked=0, Total=8742 [2021-06-05 08:07:46,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7101 states. [2021-06-05 08:07:46,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7101 to 5978. [2021-06-05 08:07:46,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5978 states, 5977 states have (on average 2.824661201271541) internal successors, (16883), 5977 states have internal predecessors, (16883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:46,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5978 states to 5978 states and 16883 transitions. [2021-06-05 08:07:46,087 INFO L78 Accepts]: Start accepts. Automaton has 5978 states and 16883 transitions. Word has length 180 [2021-06-05 08:07:46,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:07:46,088 INFO L482 AbstractCegarLoop]: Abstraction has 5978 states and 16883 transitions. [2021-06-05 08:07:46,088 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 5.055555555555555) internal successors, (182), 36 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:46,088 INFO L276 IsEmpty]: Start isEmpty. Operand 5978 states and 16883 transitions. [2021-06-05 08:07:46,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-06-05 08:07:46,092 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:07:46,092 INFO L521 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:07:46,292 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable462,458 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:07:46,293 INFO L430 AbstractCegarLoop]: === Iteration 464 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:07:46,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:07:46,293 INFO L82 PathProgramCache]: Analyzing trace with hash 69470510, now seen corresponding path program 455 times [2021-06-05 08:07:46,293 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:07:46,293 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239947993] [2021-06-05 08:07:46,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:07:46,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:07:46,603 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:07:46,603 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:07:46,604 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239947993] [2021-06-05 08:07:46,604 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239947993] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:07:46,604 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [580144649] [2021-06-05 08:07:46,604 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 459 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 459 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:07:46,673 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2021-06-05 08:07:46,673 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:07:46,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 36 conjunts are in the unsatisfiable core [2021-06-05 08:07:46,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:07:46,858 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:07:46,858 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [580144649] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:07:46,858 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:07:46,858 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 35 [2021-06-05 08:07:46,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009051234] [2021-06-05 08:07:46,859 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-06-05 08:07:46,859 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:07:46,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-06-05 08:07:46,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=960, Unknown=0, NotChecked=0, Total=1190 [2021-06-05 08:07:46,859 INFO L87 Difference]: Start difference. First operand 5978 states and 16883 transitions. Second operand has 35 states, 35 states have (on average 5.142857142857143) internal successors, (180), 35 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:48,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:07:48,059 INFO L93 Difference]: Finished difference Result 7321 states and 19697 transitions. [2021-06-05 08:07:48,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-06-05 08:07:48,060 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 5.142857142857143) internal successors, (180), 35 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 180 [2021-06-05 08:07:48,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:07:48,067 INFO L225 Difference]: With dead ends: 7321 [2021-06-05 08:07:48,067 INFO L226 Difference]: Without dead ends: 7051 [2021-06-05 08:07:48,068 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2202 ImplicationChecksByTransitivity, 1167.4ms TimeCoverageRelationStatistics Valid=2282, Invalid=6090, Unknown=0, NotChecked=0, Total=8372 [2021-06-05 08:07:48,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7051 states. [2021-06-05 08:07:48,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7051 to 5978. [2021-06-05 08:07:48,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5978 states, 5977 states have (on average 2.824661201271541) internal successors, (16883), 5977 states have internal predecessors, (16883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:48,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5978 states to 5978 states and 16883 transitions. [2021-06-05 08:07:48,134 INFO L78 Accepts]: Start accepts. Automaton has 5978 states and 16883 transitions. Word has length 180 [2021-06-05 08:07:48,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:07:48,134 INFO L482 AbstractCegarLoop]: Abstraction has 5978 states and 16883 transitions. [2021-06-05 08:07:48,134 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 5.142857142857143) internal successors, (180), 35 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:48,134 INFO L276 IsEmpty]: Start isEmpty. Operand 5978 states and 16883 transitions. [2021-06-05 08:07:48,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-06-05 08:07:48,139 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:07:48,139 INFO L521 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:07:48,339 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable463,459 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:07:48,340 INFO L430 AbstractCegarLoop]: === Iteration 465 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:07:48,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:07:48,340 INFO L82 PathProgramCache]: Analyzing trace with hash 2099789822, now seen corresponding path program 456 times [2021-06-05 08:07:48,340 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:07:48,340 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436198258] [2021-06-05 08:07:48,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:07:48,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:07:48,672 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:07:48,672 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:07:48,672 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436198258] [2021-06-05 08:07:48,672 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436198258] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:07:48,672 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [423225479] [2021-06-05 08:07:48,672 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 460 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 460 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:07:48,752 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2021-06-05 08:07:48,752 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:07:48,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 36 conjunts are in the unsatisfiable core [2021-06-05 08:07:48,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:07:48,987 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:07:48,987 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [423225479] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:07:48,987 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:07:48,987 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 36 [2021-06-05 08:07:48,987 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424819320] [2021-06-05 08:07:48,987 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-06-05 08:07:48,987 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:07:48,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-06-05 08:07:48,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=1029, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 08:07:48,988 INFO L87 Difference]: Start difference. First operand 5978 states and 16883 transitions. Second operand has 36 states, 36 states have (on average 5.055555555555555) internal successors, (182), 36 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:50,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:07:50,454 INFO L93 Difference]: Finished difference Result 7271 states and 19597 transitions. [2021-06-05 08:07:50,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-06-05 08:07:50,454 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 5.055555555555555) internal successors, (182), 36 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 180 [2021-06-05 08:07:50,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:07:50,462 INFO L225 Difference]: With dead ends: 7271 [2021-06-05 08:07:50,462 INFO L226 Difference]: Without dead ends: 7001 [2021-06-05 08:07:50,463 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2395 ImplicationChecksByTransitivity, 1437.1ms TimeCoverageRelationStatistics Valid=2465, Invalid=6655, Unknown=0, NotChecked=0, Total=9120 [2021-06-05 08:07:50,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7001 states. [2021-06-05 08:07:50,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7001 to 5978. [2021-06-05 08:07:50,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5978 states, 5977 states have (on average 2.824661201271541) internal successors, (16883), 5977 states have internal predecessors, (16883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:50,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5978 states to 5978 states and 16883 transitions. [2021-06-05 08:07:50,523 INFO L78 Accepts]: Start accepts. Automaton has 5978 states and 16883 transitions. Word has length 180 [2021-06-05 08:07:50,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:07:50,523 INFO L482 AbstractCegarLoop]: Abstraction has 5978 states and 16883 transitions. [2021-06-05 08:07:50,523 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 5.055555555555555) internal successors, (182), 36 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:50,523 INFO L276 IsEmpty]: Start isEmpty. Operand 5978 states and 16883 transitions. [2021-06-05 08:07:50,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-06-05 08:07:50,527 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:07:50,527 INFO L521 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:07:50,728 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable464,460 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:07:50,728 INFO L430 AbstractCegarLoop]: === Iteration 466 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:07:50,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:07:50,728 INFO L82 PathProgramCache]: Analyzing trace with hash -1580938004, now seen corresponding path program 457 times [2021-06-05 08:07:50,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:07:50,728 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031496020] [2021-06-05 08:07:50,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:07:50,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:07:51,041 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:07:51,041 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:07:51,041 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031496020] [2021-06-05 08:07:51,041 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031496020] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:07:51,041 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [649157982] [2021-06-05 08:07:51,041 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 461 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 461 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:07:51,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:07:51,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 36 conjunts are in the unsatisfiable core [2021-06-05 08:07:51,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:07:51,289 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:07:51,289 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [649157982] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:07:51,290 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:07:51,290 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 35 [2021-06-05 08:07:51,290 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643763380] [2021-06-05 08:07:51,290 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-06-05 08:07:51,290 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:07:51,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-06-05 08:07:51,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=252, Invalid=938, Unknown=0, NotChecked=0, Total=1190 [2021-06-05 08:07:51,290 INFO L87 Difference]: Start difference. First operand 5978 states and 16883 transitions. Second operand has 35 states, 35 states have (on average 5.142857142857143) internal successors, (180), 35 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:52,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:07:52,529 INFO L93 Difference]: Finished difference Result 7221 states and 19497 transitions. [2021-06-05 08:07:52,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-06-05 08:07:52,529 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 5.142857142857143) internal successors, (180), 35 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 180 [2021-06-05 08:07:52,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:07:52,536 INFO L225 Difference]: With dead ends: 7221 [2021-06-05 08:07:52,536 INFO L226 Difference]: Without dead ends: 6951 [2021-06-05 08:07:52,536 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2344 ImplicationChecksByTransitivity, 1193.1ms TimeCoverageRelationStatistics Valid=2469, Invalid=6273, Unknown=0, NotChecked=0, Total=8742 [2021-06-05 08:07:52,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6951 states. [2021-06-05 08:07:52,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6951 to 5978. [2021-06-05 08:07:52,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5978 states, 5977 states have (on average 2.824661201271541) internal successors, (16883), 5977 states have internal predecessors, (16883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:52,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5978 states to 5978 states and 16883 transitions. [2021-06-05 08:07:52,594 INFO L78 Accepts]: Start accepts. Automaton has 5978 states and 16883 transitions. Word has length 180 [2021-06-05 08:07:52,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:07:52,594 INFO L482 AbstractCegarLoop]: Abstraction has 5978 states and 16883 transitions. [2021-06-05 08:07:52,594 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 5.142857142857143) internal successors, (180), 35 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:52,594 INFO L276 IsEmpty]: Start isEmpty. Operand 5978 states and 16883 transitions. [2021-06-05 08:07:52,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-06-05 08:07:52,599 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:07:52,599 INFO L521 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:07:52,799 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 461 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable465 [2021-06-05 08:07:52,799 INFO L430 AbstractCegarLoop]: === Iteration 467 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:07:52,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:07:52,800 INFO L82 PathProgramCache]: Analyzing trace with hash 998787004, now seen corresponding path program 458 times [2021-06-05 08:07:52,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:07:52,800 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589714060] [2021-06-05 08:07:52,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:07:52,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:07:53,114 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:07:53,114 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:07:53,114 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589714060] [2021-06-05 08:07:53,114 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589714060] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:07:53,114 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1689007931] [2021-06-05 08:07:53,114 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 462 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 462 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:07:53,179 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 08:07:53,179 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:07:53,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 36 conjunts are in the unsatisfiable core [2021-06-05 08:07:53,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:07:53,378 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:07:53,378 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1689007931] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:07:53,378 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:07:53,378 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 36 [2021-06-05 08:07:53,378 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395428598] [2021-06-05 08:07:53,378 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-06-05 08:07:53,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:07:53,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-06-05 08:07:53,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=254, Invalid=1006, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 08:07:53,379 INFO L87 Difference]: Start difference. First operand 5978 states and 16883 transitions. Second operand has 36 states, 36 states have (on average 5.055555555555555) internal successors, (182), 36 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:54,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:07:54,977 INFO L93 Difference]: Finished difference Result 7231 states and 19547 transitions. [2021-06-05 08:07:54,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-06-05 08:07:54,978 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 5.055555555555555) internal successors, (182), 36 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 180 [2021-06-05 08:07:54,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:07:54,985 INFO L225 Difference]: With dead ends: 7231 [2021-06-05 08:07:54,985 INFO L226 Difference]: Without dead ends: 6961 [2021-06-05 08:07:54,985 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2544 ImplicationChecksByTransitivity, 1520.3ms TimeCoverageRelationStatistics Valid=2660, Invalid=6846, Unknown=0, NotChecked=0, Total=9506 [2021-06-05 08:07:54,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6961 states. [2021-06-05 08:07:55,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6961 to 5978. [2021-06-05 08:07:55,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5978 states, 5977 states have (on average 2.82549774134181) internal successors, (16888), 5977 states have internal predecessors, (16888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:55,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5978 states to 5978 states and 16888 transitions. [2021-06-05 08:07:55,051 INFO L78 Accepts]: Start accepts. Automaton has 5978 states and 16888 transitions. Word has length 180 [2021-06-05 08:07:55,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:07:55,052 INFO L482 AbstractCegarLoop]: Abstraction has 5978 states and 16888 transitions. [2021-06-05 08:07:55,052 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 5.055555555555555) internal successors, (182), 36 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:55,052 INFO L276 IsEmpty]: Start isEmpty. Operand 5978 states and 16888 transitions. [2021-06-05 08:07:55,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-06-05 08:07:55,057 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:07:55,057 INFO L521 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:07:55,257 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 462 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable466 [2021-06-05 08:07:55,257 INFO L430 AbstractCegarLoop]: === Iteration 468 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:07:55,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:07:55,257 INFO L82 PathProgramCache]: Analyzing trace with hash -33860598, now seen corresponding path program 459 times [2021-06-05 08:07:55,258 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:07:55,258 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671231867] [2021-06-05 08:07:55,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:07:55,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:07:55,575 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:07:55,575 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:07:55,575 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671231867] [2021-06-05 08:07:55,575 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671231867] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:07:55,575 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1386729888] [2021-06-05 08:07:55,575 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 463 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 463 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:07:55,656 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2021-06-05 08:07:55,656 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:07:55,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 36 conjunts are in the unsatisfiable core [2021-06-05 08:07:55,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:07:55,837 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:07:55,837 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1386729888] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:07:55,837 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:07:55,837 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 35 [2021-06-05 08:07:55,837 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218398470] [2021-06-05 08:07:55,837 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-06-05 08:07:55,837 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:07:55,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-06-05 08:07:55,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=912, Unknown=0, NotChecked=0, Total=1190 [2021-06-05 08:07:55,838 INFO L87 Difference]: Start difference. First operand 5978 states and 16888 transitions. Second operand has 35 states, 35 states have (on average 5.142857142857143) internal successors, (180), 35 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:57,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:07:57,155 INFO L93 Difference]: Finished difference Result 7998 states and 21721 transitions. [2021-06-05 08:07:57,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-06-05 08:07:57,156 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 5.142857142857143) internal successors, (180), 35 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 180 [2021-06-05 08:07:57,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:07:57,164 INFO L225 Difference]: With dead ends: 7998 [2021-06-05 08:07:57,164 INFO L226 Difference]: Without dead ends: 7728 [2021-06-05 08:07:57,165 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2489 ImplicationChecksByTransitivity, 1251.6ms TimeCoverageRelationStatistics Valid=2673, Invalid=6447, Unknown=0, NotChecked=0, Total=9120 [2021-06-05 08:07:57,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7728 states. [2021-06-05 08:07:57,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7728 to 6158. [2021-06-05 08:07:57,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6158 states, 6157 states have (on average 2.833685236316388) internal successors, (17447), 6157 states have internal predecessors, (17447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:57,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6158 states to 6158 states and 17447 transitions. [2021-06-05 08:07:57,236 INFO L78 Accepts]: Start accepts. Automaton has 6158 states and 17447 transitions. Word has length 180 [2021-06-05 08:07:57,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:07:57,236 INFO L482 AbstractCegarLoop]: Abstraction has 6158 states and 17447 transitions. [2021-06-05 08:07:57,236 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 5.142857142857143) internal successors, (180), 35 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:57,236 INFO L276 IsEmpty]: Start isEmpty. Operand 6158 states and 17447 transitions. [2021-06-05 08:07:57,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-06-05 08:07:57,274 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:07:57,274 INFO L521 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:07:57,474 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable467,463 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:07:57,474 INFO L430 AbstractCegarLoop]: === Iteration 469 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:07:57,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:07:57,474 INFO L82 PathProgramCache]: Analyzing trace with hash -11517348, now seen corresponding path program 460 times [2021-06-05 08:07:57,475 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:07:57,475 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909898319] [2021-06-05 08:07:57,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:07:57,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:07:57,791 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:07:57,791 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:07:57,791 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909898319] [2021-06-05 08:07:57,791 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909898319] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:07:57,791 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1918395947] [2021-06-05 08:07:57,791 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 464 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 464 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:07:57,856 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 08:07:57,856 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:07:57,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 36 conjunts are in the unsatisfiable core [2021-06-05 08:07:57,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:07:58,069 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:07:58,069 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1918395947] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:07:58,069 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:07:58,069 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 37 [2021-06-05 08:07:58,069 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360030060] [2021-06-05 08:07:58,069 INFO L462 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-06-05 08:07:58,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:07:58,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-06-05 08:07:58,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=284, Invalid=1048, Unknown=0, NotChecked=0, Total=1332 [2021-06-05 08:07:58,070 INFO L87 Difference]: Start difference. First operand 6158 states and 17447 transitions. Second operand has 37 states, 37 states have (on average 4.945945945945946) internal successors, (183), 37 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:59,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:07:59,748 INFO L93 Difference]: Finished difference Result 7821 states and 21221 transitions. [2021-06-05 08:07:59,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2021-06-05 08:07:59,748 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 4.945945945945946) internal successors, (183), 37 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 180 [2021-06-05 08:07:59,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:07:59,756 INFO L225 Difference]: With dead ends: 7821 [2021-06-05 08:07:59,756 INFO L226 Difference]: Without dead ends: 7246 [2021-06-05 08:07:59,758 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2954 ImplicationChecksByTransitivity, 1608.7ms TimeCoverageRelationStatistics Valid=2964, Invalid=7748, Unknown=0, NotChecked=0, Total=10712 [2021-06-05 08:07:59,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7246 states. [2021-06-05 08:07:59,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7246 to 4003. [2021-06-05 08:07:59,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4003 states, 4002 states have (on average 2.7406296851574212) internal successors, (10968), 4002 states have internal predecessors, (10968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:59,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4003 states to 4003 states and 10968 transitions. [2021-06-05 08:07:59,808 INFO L78 Accepts]: Start accepts. Automaton has 4003 states and 10968 transitions. Word has length 180 [2021-06-05 08:07:59,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:07:59,808 INFO L482 AbstractCegarLoop]: Abstraction has 4003 states and 10968 transitions. [2021-06-05 08:07:59,808 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 4.945945945945946) internal successors, (183), 37 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:59,808 INFO L276 IsEmpty]: Start isEmpty. Operand 4003 states and 10968 transitions. [2021-06-05 08:07:59,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-06-05 08:07:59,812 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:07:59,812 INFO L521 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:08:00,012 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 464 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable468 [2021-06-05 08:08:00,012 INFO L430 AbstractCegarLoop]: === Iteration 470 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:08:00,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:08:00,012 INFO L82 PathProgramCache]: Analyzing trace with hash 1598313859, now seen corresponding path program 461 times [2021-06-05 08:08:00,012 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:08:00,013 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744821540] [2021-06-05 08:08:00,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:08:00,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:08:00,437 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:08:00,437 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:08:00,437 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744821540] [2021-06-05 08:08:00,437 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744821540] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:08:00,437 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [161031629] [2021-06-05 08:08:00,437 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 465 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 465 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:08:00,605 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2021-06-05 08:08:00,605 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:08:00,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 37 conjunts are in the unsatisfiable core [2021-06-05 08:08:00,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:08:00,816 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:08:00,817 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [161031629] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:08:00,817 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:08:00,817 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2021-06-05 08:08:00,817 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842154872] [2021-06-05 08:08:00,817 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-06-05 08:08:00,817 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:08:00,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-06-05 08:08:00,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=281, Invalid=979, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 08:08:00,817 INFO L87 Difference]: Start difference. First operand 4003 states and 10968 transitions. Second operand has 36 states, 36 states have (on average 5.138888888888889) internal successors, (185), 36 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:01,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:08:01,547 INFO L93 Difference]: Finished difference Result 5921 states and 15007 transitions. [2021-06-05 08:08:01,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-05 08:08:01,547 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 5.138888888888889) internal successors, (185), 36 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 185 [2021-06-05 08:08:01,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:08:01,553 INFO L225 Difference]: With dead ends: 5921 [2021-06-05 08:08:01,553 INFO L226 Difference]: Without dead ends: 5651 [2021-06-05 08:08:01,553 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 942 ImplicationChecksByTransitivity, 909.6ms TimeCoverageRelationStatistics Valid=1382, Invalid=3730, Unknown=0, NotChecked=0, Total=5112 [2021-06-05 08:08:01,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5651 states. [2021-06-05 08:08:01,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5651 to 4078. [2021-06-05 08:08:01,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4078 states, 4077 states have (on average 2.745401030169242) internal successors, (11193), 4077 states have internal predecessors, (11193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:01,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4078 states to 4078 states and 11193 transitions. [2021-06-05 08:08:01,597 INFO L78 Accepts]: Start accepts. Automaton has 4078 states and 11193 transitions. Word has length 185 [2021-06-05 08:08:01,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:08:01,597 INFO L482 AbstractCegarLoop]: Abstraction has 4078 states and 11193 transitions. [2021-06-05 08:08:01,597 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 5.138888888888889) internal successors, (185), 36 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:01,597 INFO L276 IsEmpty]: Start isEmpty. Operand 4078 states and 11193 transitions. [2021-06-05 08:08:01,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-06-05 08:08:01,600 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:08:01,600 INFO L521 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:08:01,800 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 465 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable469 [2021-06-05 08:08:01,801 INFO L430 AbstractCegarLoop]: === Iteration 471 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:08:01,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:08:01,801 INFO L82 PathProgramCache]: Analyzing trace with hash 450321491, now seen corresponding path program 462 times [2021-06-05 08:08:01,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:08:01,801 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39921046] [2021-06-05 08:08:01,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:08:01,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:08:02,224 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:08:02,225 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:08:02,225 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39921046] [2021-06-05 08:08:02,225 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39921046] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:08:02,225 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [221556253] [2021-06-05 08:08:02,225 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 466 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 466 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:08:02,305 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2021-06-05 08:08:02,306 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:08:02,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 37 conjunts are in the unsatisfiable core [2021-06-05 08:08:02,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:08:02,534 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:08:02,534 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [221556253] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:08:02,534 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:08:02,534 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 37 [2021-06-05 08:08:02,534 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045959916] [2021-06-05 08:08:02,534 INFO L462 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-06-05 08:08:02,534 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:08:02,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-06-05 08:08:02,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=270, Invalid=1062, Unknown=0, NotChecked=0, Total=1332 [2021-06-05 08:08:02,535 INFO L87 Difference]: Start difference. First operand 4078 states and 11193 transitions. Second operand has 37 states, 37 states have (on average 5.054054054054054) internal successors, (187), 37 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:03,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:08:03,394 INFO L93 Difference]: Finished difference Result 6691 states and 16622 transitions. [2021-06-05 08:08:03,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-06-05 08:08:03,394 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 5.054054054054054) internal successors, (187), 37 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 185 [2021-06-05 08:08:03,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:08:03,401 INFO L225 Difference]: With dead ends: 6691 [2021-06-05 08:08:03,401 INFO L226 Difference]: Without dead ends: 6421 [2021-06-05 08:08:03,401 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1074 ImplicationChecksByTransitivity, 974.4ms TimeCoverageRelationStatistics Valid=1453, Invalid=4097, Unknown=0, NotChecked=0, Total=5550 [2021-06-05 08:08:03,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6421 states. [2021-06-05 08:08:03,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6421 to 4153. [2021-06-05 08:08:03,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4153 states, 4152 states have (on average 2.75) internal successors, (11418), 4152 states have internal predecessors, (11418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:03,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4153 states to 4153 states and 11418 transitions. [2021-06-05 08:08:03,451 INFO L78 Accepts]: Start accepts. Automaton has 4153 states and 11418 transitions. Word has length 185 [2021-06-05 08:08:03,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:08:03,451 INFO L482 AbstractCegarLoop]: Abstraction has 4153 states and 11418 transitions. [2021-06-05 08:08:03,452 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 5.054054054054054) internal successors, (187), 37 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:03,452 INFO L276 IsEmpty]: Start isEmpty. Operand 4153 states and 11418 transitions. [2021-06-05 08:08:03,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-06-05 08:08:03,455 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:08:03,455 INFO L521 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:08:03,656 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable470,466 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:08:03,656 INFO L430 AbstractCegarLoop]: === Iteration 472 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:08:03,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:08:03,656 INFO L82 PathProgramCache]: Analyzing trace with hash -1414408383, now seen corresponding path program 463 times [2021-06-05 08:08:03,656 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:08:03,657 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10589684] [2021-06-05 08:08:03,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:08:03,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:08:04,043 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:08:04,043 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:08:04,043 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10589684] [2021-06-05 08:08:04,043 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10589684] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:08:04,043 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1761062955] [2021-06-05 08:08:04,043 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 467 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 467 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:08:04,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:08:04,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 37 conjunts are in the unsatisfiable core [2021-06-05 08:08:04,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:08:04,312 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:08:04,312 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1761062955] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:08:04,312 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:08:04,313 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2021-06-05 08:08:04,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585717001] [2021-06-05 08:08:04,313 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-06-05 08:08:04,313 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:08:04,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-06-05 08:08:04,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=256, Invalid=1004, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 08:08:04,313 INFO L87 Difference]: Start difference. First operand 4153 states and 11418 transitions. Second operand has 36 states, 36 states have (on average 5.138888888888889) internal successors, (185), 36 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:05,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:08:05,088 INFO L93 Difference]: Finished difference Result 6721 states and 16757 transitions. [2021-06-05 08:08:05,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-05 08:08:05,089 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 5.138888888888889) internal successors, (185), 36 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 185 [2021-06-05 08:08:05,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:08:05,095 INFO L225 Difference]: With dead ends: 6721 [2021-06-05 08:08:05,095 INFO L226 Difference]: Without dead ends: 6451 [2021-06-05 08:08:05,096 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1152 ImplicationChecksByTransitivity, 905.7ms TimeCoverageRelationStatistics Valid=1441, Invalid=4109, Unknown=0, NotChecked=0, Total=5550 [2021-06-05 08:08:05,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6451 states. [2021-06-05 08:08:05,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6451 to 4228. [2021-06-05 08:08:05,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4228 states, 4227 states have (on average 2.7544357700496804) internal successors, (11643), 4227 states have internal predecessors, (11643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:05,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4228 states to 4228 states and 11643 transitions. [2021-06-05 08:08:05,149 INFO L78 Accepts]: Start accepts. Automaton has 4228 states and 11643 transitions. Word has length 185 [2021-06-05 08:08:05,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:08:05,149 INFO L482 AbstractCegarLoop]: Abstraction has 4228 states and 11643 transitions. [2021-06-05 08:08:05,149 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 5.138888888888889) internal successors, (185), 36 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:05,150 INFO L276 IsEmpty]: Start isEmpty. Operand 4228 states and 11643 transitions. [2021-06-05 08:08:05,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-06-05 08:08:05,153 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:08:05,153 INFO L521 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:08:05,353 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable471,467 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:08:05,353 INFO L430 AbstractCegarLoop]: === Iteration 473 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:08:05,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:08:05,354 INFO L82 PathProgramCache]: Analyzing trace with hash -716692975, now seen corresponding path program 464 times [2021-06-05 08:08:05,354 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:08:05,354 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149901690] [2021-06-05 08:08:05,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:08:05,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:08:05,783 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:08:05,783 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:08:05,783 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149901690] [2021-06-05 08:08:05,783 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149901690] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:08:05,783 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1160861494] [2021-06-05 08:08:05,783 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 468 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 468 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:08:05,849 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 08:08:05,849 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:08:05,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 37 conjunts are in the unsatisfiable core [2021-06-05 08:08:05,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:08:06,099 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:08:06,099 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1160861494] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:08:06,099 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:08:06,100 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 37 [2021-06-05 08:08:06,100 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219451400] [2021-06-05 08:08:06,100 INFO L462 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-06-05 08:08:06,100 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:08:06,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-06-05 08:08:06,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=246, Invalid=1086, Unknown=0, NotChecked=0, Total=1332 [2021-06-05 08:08:06,100 INFO L87 Difference]: Start difference. First operand 4228 states and 11643 transitions. Second operand has 37 states, 37 states have (on average 5.054054054054054) internal successors, (187), 37 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:07,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:08:07,019 INFO L93 Difference]: Finished difference Result 6746 states and 16882 transitions. [2021-06-05 08:08:07,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-06-05 08:08:07,020 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 5.054054054054054) internal successors, (187), 37 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 185 [2021-06-05 08:08:07,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:08:07,026 INFO L225 Difference]: With dead ends: 6746 [2021-06-05 08:08:07,026 INFO L226 Difference]: Without dead ends: 6476 [2021-06-05 08:08:07,027 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1175 ImplicationChecksByTransitivity, 1036.9ms TimeCoverageRelationStatistics Valid=1463, Invalid=4389, Unknown=0, NotChecked=0, Total=5852 [2021-06-05 08:08:07,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6476 states. [2021-06-05 08:08:07,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6476 to 4303. [2021-06-05 08:08:07,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4303 states, 4302 states have (on average 2.758716875871688) internal successors, (11868), 4302 states have internal predecessors, (11868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:07,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4303 states to 4303 states and 11868 transitions. [2021-06-05 08:08:07,079 INFO L78 Accepts]: Start accepts. Automaton has 4303 states and 11868 transitions. Word has length 185 [2021-06-05 08:08:07,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:08:07,080 INFO L482 AbstractCegarLoop]: Abstraction has 4303 states and 11868 transitions. [2021-06-05 08:08:07,080 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 5.054054054054054) internal successors, (187), 37 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:07,080 INFO L276 IsEmpty]: Start isEmpty. Operand 4303 states and 11868 transitions. [2021-06-05 08:08:07,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-06-05 08:08:07,083 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:08:07,083 INFO L521 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:08:07,283 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable472,468 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:08:07,284 INFO L430 AbstractCegarLoop]: === Iteration 474 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:08:07,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:08:07,284 INFO L82 PathProgramCache]: Analyzing trace with hash 1858391679, now seen corresponding path program 465 times [2021-06-05 08:08:07,284 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:08:07,284 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699046661] [2021-06-05 08:08:07,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:08:07,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:08:07,661 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:08:07,661 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:08:07,661 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699046661] [2021-06-05 08:08:07,661 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699046661] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:08:07,661 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [126821960] [2021-06-05 08:08:07,661 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 469 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 469 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:08:07,743 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2021-06-05 08:08:07,743 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:08:07,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 37 conjunts are in the unsatisfiable core [2021-06-05 08:08:07,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:08:07,951 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:08:07,951 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [126821960] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:08:07,951 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:08:07,951 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2021-06-05 08:08:07,952 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117448866] [2021-06-05 08:08:07,952 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-06-05 08:08:07,952 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:08:07,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-06-05 08:08:07,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=235, Invalid=1025, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 08:08:07,952 INFO L87 Difference]: Start difference. First operand 4303 states and 11868 transitions. Second operand has 36 states, 36 states have (on average 5.138888888888889) internal successors, (185), 36 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:08,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:08:08,823 INFO L93 Difference]: Finished difference Result 6771 states and 17007 transitions. [2021-06-05 08:08:08,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-06-05 08:08:08,823 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 5.138888888888889) internal successors, (185), 36 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 185 [2021-06-05 08:08:08,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:08:08,829 INFO L225 Difference]: With dead ends: 6771 [2021-06-05 08:08:08,829 INFO L226 Difference]: Without dead ends: 6501 [2021-06-05 08:08:08,829 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1263 ImplicationChecksByTransitivity, 945.8ms TimeCoverageRelationStatistics Valid=1465, Invalid=4387, Unknown=0, NotChecked=0, Total=5852 [2021-06-05 08:08:08,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6501 states. [2021-06-05 08:08:08,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6501 to 4378. [2021-06-05 08:08:08,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4378 states, 4377 states have (on average 2.7628512679917754) internal successors, (12093), 4377 states have internal predecessors, (12093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:08,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4378 states to 4378 states and 12093 transitions. [2021-06-05 08:08:08,879 INFO L78 Accepts]: Start accepts. Automaton has 4378 states and 12093 transitions. Word has length 185 [2021-06-05 08:08:08,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:08:08,879 INFO L482 AbstractCegarLoop]: Abstraction has 4378 states and 12093 transitions. [2021-06-05 08:08:08,879 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 5.138888888888889) internal successors, (185), 36 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:08,879 INFO L276 IsEmpty]: Start isEmpty. Operand 4378 states and 12093 transitions. [2021-06-05 08:08:08,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-06-05 08:08:08,883 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:08:08,883 INFO L521 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:08:09,083 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable473,469 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:08:09,083 INFO L430 AbstractCegarLoop]: === Iteration 475 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:08:09,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:08:09,083 INFO L82 PathProgramCache]: Analyzing trace with hash 1357077839, now seen corresponding path program 466 times [2021-06-05 08:08:09,083 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:08:09,083 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092724755] [2021-06-05 08:08:09,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:08:09,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:08:09,472 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:08:09,472 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:08:09,472 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092724755] [2021-06-05 08:08:09,472 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092724755] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:08:09,472 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [709395583] [2021-06-05 08:08:09,472 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 470 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 470 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:08:09,539 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 08:08:09,539 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:08:09,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 37 conjunts are in the unsatisfiable core [2021-06-05 08:08:09,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:08:09,763 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:08:09,763 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [709395583] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:08:09,764 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:08:09,764 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 37 [2021-06-05 08:08:09,764 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096885064] [2021-06-05 08:08:09,764 INFO L462 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-06-05 08:08:09,764 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:08:09,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-06-05 08:08:09,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=1106, Unknown=0, NotChecked=0, Total=1332 [2021-06-05 08:08:09,764 INFO L87 Difference]: Start difference. First operand 4378 states and 12093 transitions. Second operand has 37 states, 37 states have (on average 5.054054054054054) internal successors, (187), 37 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:10,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:08:10,679 INFO L93 Difference]: Finished difference Result 6796 states and 17132 transitions. [2021-06-05 08:08:10,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-06-05 08:08:10,680 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 5.054054054054054) internal successors, (187), 37 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 185 [2021-06-05 08:08:10,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:08:10,686 INFO L225 Difference]: With dead ends: 6796 [2021-06-05 08:08:10,686 INFO L226 Difference]: Without dead ends: 6526 [2021-06-05 08:08:10,687 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1289 ImplicationChecksByTransitivity, 1026.8ms TimeCoverageRelationStatistics Valid=1489, Invalid=4673, Unknown=0, NotChecked=0, Total=6162 [2021-06-05 08:08:10,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6526 states. [2021-06-05 08:08:10,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6526 to 4453. [2021-06-05 08:08:10,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4453 states, 4452 states have (on average 2.766846361185984) internal successors, (12318), 4452 states have internal predecessors, (12318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:10,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4453 states to 4453 states and 12318 transitions. [2021-06-05 08:08:10,736 INFO L78 Accepts]: Start accepts. Automaton has 4453 states and 12318 transitions. Word has length 185 [2021-06-05 08:08:10,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:08:10,737 INFO L482 AbstractCegarLoop]: Abstraction has 4453 states and 12318 transitions. [2021-06-05 08:08:10,737 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 5.054054054054054) internal successors, (187), 37 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:10,737 INFO L276 IsEmpty]: Start isEmpty. Operand 4453 states and 12318 transitions. [2021-06-05 08:08:10,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-06-05 08:08:10,740 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:08:10,740 INFO L521 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:08:10,940 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 470 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable474 [2021-06-05 08:08:10,941 INFO L430 AbstractCegarLoop]: === Iteration 476 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:08:10,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:08:10,941 INFO L82 PathProgramCache]: Analyzing trace with hash 1833573181, now seen corresponding path program 467 times [2021-06-05 08:08:10,941 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:08:10,941 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136863930] [2021-06-05 08:08:10,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:08:10,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:08:11,309 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:08:11,309 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:08:11,309 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136863930] [2021-06-05 08:08:11,309 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136863930] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:08:11,309 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [452613905] [2021-06-05 08:08:11,309 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 471 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 471 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:08:11,379 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2021-06-05 08:08:11,379 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:08:11,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 37 conjunts are in the unsatisfiable core [2021-06-05 08:08:11,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:08:11,611 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:08:11,612 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [452613905] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:08:11,612 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:08:11,612 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2021-06-05 08:08:11,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238435683] [2021-06-05 08:08:11,612 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-06-05 08:08:11,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:08:11,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-06-05 08:08:11,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=1042, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 08:08:11,612 INFO L87 Difference]: Start difference. First operand 4453 states and 12318 transitions. Second operand has 36 states, 36 states have (on average 5.138888888888889) internal successors, (185), 36 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:12,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:08:12,530 INFO L93 Difference]: Finished difference Result 6821 states and 17257 transitions. [2021-06-05 08:08:12,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-06-05 08:08:12,530 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 5.138888888888889) internal successors, (185), 36 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 185 [2021-06-05 08:08:12,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:08:12,537 INFO L225 Difference]: With dead ends: 6821 [2021-06-05 08:08:12,537 INFO L226 Difference]: Without dead ends: 6551 [2021-06-05 08:08:12,537 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1382 ImplicationChecksByTransitivity, 946.5ms TimeCoverageRelationStatistics Valid=1505, Invalid=4657, Unknown=0, NotChecked=0, Total=6162 [2021-06-05 08:08:12,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6551 states. [2021-06-05 08:08:12,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6551 to 4528. [2021-06-05 08:08:12,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4528 states, 4527 states have (on average 2.7707090788601723) internal successors, (12543), 4527 states have internal predecessors, (12543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:12,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4528 states to 4528 states and 12543 transitions. [2021-06-05 08:08:12,588 INFO L78 Accepts]: Start accepts. Automaton has 4528 states and 12543 transitions. Word has length 185 [2021-06-05 08:08:12,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:08:12,589 INFO L482 AbstractCegarLoop]: Abstraction has 4528 states and 12543 transitions. [2021-06-05 08:08:12,589 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 5.138888888888889) internal successors, (185), 36 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:12,589 INFO L276 IsEmpty]: Start isEmpty. Operand 4528 states and 12543 transitions. [2021-06-05 08:08:12,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-06-05 08:08:12,592 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:08:12,592 INFO L521 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:08:12,792 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 471 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable475 [2021-06-05 08:08:12,793 INFO L430 AbstractCegarLoop]: === Iteration 477 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:08:12,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:08:12,793 INFO L82 PathProgramCache]: Analyzing trace with hash -994710003, now seen corresponding path program 468 times [2021-06-05 08:08:12,793 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:08:12,793 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861493543] [2021-06-05 08:08:12,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:08:12,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:08:13,173 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:08:13,173 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:08:13,173 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861493543] [2021-06-05 08:08:13,173 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861493543] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:08:13,173 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1248146681] [2021-06-05 08:08:13,173 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 472 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 472 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:08:13,253 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2021-06-05 08:08:13,254 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:08:13,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 37 conjunts are in the unsatisfiable core [2021-06-05 08:08:13,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:08:13,477 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:08:13,477 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1248146681] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:08:13,477 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:08:13,477 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 37 [2021-06-05 08:08:13,477 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845642033] [2021-06-05 08:08:13,477 INFO L462 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-06-05 08:08:13,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:08:13,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-06-05 08:08:13,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=1122, Unknown=0, NotChecked=0, Total=1332 [2021-06-05 08:08:13,478 INFO L87 Difference]: Start difference. First operand 4528 states and 12543 transitions. Second operand has 37 states, 37 states have (on average 5.054054054054054) internal successors, (187), 37 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:14,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:08:14,544 INFO L93 Difference]: Finished difference Result 6846 states and 17382 transitions. [2021-06-05 08:08:14,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-06-05 08:08:14,544 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 5.054054054054054) internal successors, (187), 37 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 185 [2021-06-05 08:08:14,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:08:14,550 INFO L225 Difference]: With dead ends: 6846 [2021-06-05 08:08:14,550 INFO L226 Difference]: Without dead ends: 6576 [2021-06-05 08:08:14,551 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1411 ImplicationChecksByTransitivity, 1066.2ms TimeCoverageRelationStatistics Valid=1531, Invalid=4949, Unknown=0, NotChecked=0, Total=6480 [2021-06-05 08:08:14,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6576 states. [2021-06-05 08:08:14,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6576 to 4603. [2021-06-05 08:08:14,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4603 states, 4602 states have (on average 2.7744458930899607) internal successors, (12768), 4602 states have internal predecessors, (12768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:14,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4603 states to 4603 states and 12768 transitions. [2021-06-05 08:08:14,606 INFO L78 Accepts]: Start accepts. Automaton has 4603 states and 12768 transitions. Word has length 185 [2021-06-05 08:08:14,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:08:14,606 INFO L482 AbstractCegarLoop]: Abstraction has 4603 states and 12768 transitions. [2021-06-05 08:08:14,606 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 5.054054054054054) internal successors, (187), 37 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:14,606 INFO L276 IsEmpty]: Start isEmpty. Operand 4603 states and 12768 transitions. [2021-06-05 08:08:14,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-06-05 08:08:14,610 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:08:14,610 INFO L521 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:08:14,810 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 472 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable476 [2021-06-05 08:08:14,810 INFO L430 AbstractCegarLoop]: === Iteration 478 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:08:14,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:08:14,810 INFO L82 PathProgramCache]: Analyzing trace with hash -1129931397, now seen corresponding path program 469 times [2021-06-05 08:08:14,811 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:08:14,811 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815128280] [2021-06-05 08:08:14,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:08:14,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:08:15,169 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:08:15,170 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:08:15,170 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815128280] [2021-06-05 08:08:15,170 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815128280] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:08:15,170 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1758265145] [2021-06-05 08:08:15,170 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 473 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 473 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:08:15,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:08:15,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 37 conjunts are in the unsatisfiable core [2021-06-05 08:08:15,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:08:15,440 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:08:15,441 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1758265145] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:08:15,441 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:08:15,441 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2021-06-05 08:08:15,441 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142424235] [2021-06-05 08:08:15,441 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-06-05 08:08:15,441 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:08:15,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-06-05 08:08:15,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=1055, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 08:08:15,442 INFO L87 Difference]: Start difference. First operand 4603 states and 12768 transitions. Second operand has 36 states, 36 states have (on average 5.138888888888889) internal successors, (185), 36 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:16,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:08:16,335 INFO L93 Difference]: Finished difference Result 6871 states and 17507 transitions. [2021-06-05 08:08:16,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-06-05 08:08:16,336 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 5.138888888888889) internal successors, (185), 36 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 185 [2021-06-05 08:08:16,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:08:16,343 INFO L225 Difference]: With dead ends: 6871 [2021-06-05 08:08:16,343 INFO L226 Difference]: Without dead ends: 6601 [2021-06-05 08:08:16,343 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1505 ImplicationChecksByTransitivity, 974.8ms TimeCoverageRelationStatistics Valid=1561, Invalid=4919, Unknown=0, NotChecked=0, Total=6480 [2021-06-05 08:08:16,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6601 states. [2021-06-05 08:08:16,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6601 to 4678. [2021-06-05 08:08:16,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4678 states, 4677 states have (on average 2.7780628608082103) internal successors, (12993), 4677 states have internal predecessors, (12993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:16,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4678 states to 4678 states and 12993 transitions. [2021-06-05 08:08:16,403 INFO L78 Accepts]: Start accepts. Automaton has 4678 states and 12993 transitions. Word has length 185 [2021-06-05 08:08:16,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:08:16,403 INFO L482 AbstractCegarLoop]: Abstraction has 4678 states and 12993 transitions. [2021-06-05 08:08:16,403 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 5.138888888888889) internal successors, (185), 36 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:16,403 INFO L276 IsEmpty]: Start isEmpty. Operand 4678 states and 12993 transitions. [2021-06-05 08:08:16,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-06-05 08:08:16,407 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:08:16,407 INFO L521 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:08:16,607 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 473 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable477 [2021-06-05 08:08:16,607 INFO L430 AbstractCegarLoop]: === Iteration 479 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:08:16,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:08:16,607 INFO L82 PathProgramCache]: Analyzing trace with hash -2006666165, now seen corresponding path program 470 times [2021-06-05 08:08:16,608 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:08:16,608 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57451973] [2021-06-05 08:08:16,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:08:16,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:08:16,981 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:08:16,981 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:08:16,981 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57451973] [2021-06-05 08:08:16,981 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57451973] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:08:16,981 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1985499776] [2021-06-05 08:08:16,981 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 474 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 474 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:08:17,047 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 08:08:17,048 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:08:17,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 37 conjunts are in the unsatisfiable core [2021-06-05 08:08:17,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:08:17,298 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:08:17,298 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1985499776] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:08:17,298 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:08:17,299 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 37 [2021-06-05 08:08:17,299 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497872221] [2021-06-05 08:08:17,299 INFO L462 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-06-05 08:08:17,299 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:08:17,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-06-05 08:08:17,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=1134, Unknown=0, NotChecked=0, Total=1332 [2021-06-05 08:08:17,299 INFO L87 Difference]: Start difference. First operand 4678 states and 12993 transitions. Second operand has 37 states, 37 states have (on average 5.054054054054054) internal successors, (187), 37 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:18,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:08:18,310 INFO L93 Difference]: Finished difference Result 6896 states and 17632 transitions. [2021-06-05 08:08:18,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-06-05 08:08:18,310 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 5.054054054054054) internal successors, (187), 37 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 185 [2021-06-05 08:08:18,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:08:18,317 INFO L225 Difference]: With dead ends: 6896 [2021-06-05 08:08:18,317 INFO L226 Difference]: Without dead ends: 6626 [2021-06-05 08:08:18,318 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1537 ImplicationChecksByTransitivity, 1106.1ms TimeCoverageRelationStatistics Valid=1589, Invalid=5217, Unknown=0, NotChecked=0, Total=6806 [2021-06-05 08:08:18,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6626 states. [2021-06-05 08:08:18,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6626 to 4753. [2021-06-05 08:08:18,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4753 states, 4752 states have (on average 2.7815656565656566) internal successors, (13218), 4752 states have internal predecessors, (13218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:18,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4753 states to 4753 states and 13218 transitions. [2021-06-05 08:08:18,378 INFO L78 Accepts]: Start accepts. Automaton has 4753 states and 13218 transitions. Word has length 185 [2021-06-05 08:08:18,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:08:18,378 INFO L482 AbstractCegarLoop]: Abstraction has 4753 states and 13218 transitions. [2021-06-05 08:08:18,378 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 5.054054054054054) internal successors, (187), 37 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:18,379 INFO L276 IsEmpty]: Start isEmpty. Operand 4753 states and 13218 transitions. [2021-06-05 08:08:18,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-06-05 08:08:18,382 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:08:18,382 INFO L521 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:08:18,583 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 474 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable478 [2021-06-05 08:08:18,583 INFO L430 AbstractCegarLoop]: === Iteration 480 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:08:18,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:08:18,583 INFO L82 PathProgramCache]: Analyzing trace with hash 550974777, now seen corresponding path program 471 times [2021-06-05 08:08:18,583 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:08:18,583 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252969254] [2021-06-05 08:08:18,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:08:18,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:08:18,934 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:08:18,934 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:08:18,934 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252969254] [2021-06-05 08:08:18,934 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252969254] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:08:18,934 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1498120961] [2021-06-05 08:08:18,934 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 475 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 475 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:08:19,015 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2021-06-05 08:08:19,015 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:08:19,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 37 conjunts are in the unsatisfiable core [2021-06-05 08:08:19,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:08:19,217 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:08:19,217 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1498120961] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:08:19,218 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:08:19,218 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2021-06-05 08:08:19,218 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720622445] [2021-06-05 08:08:19,218 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-06-05 08:08:19,218 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:08:19,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-06-05 08:08:19,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=1064, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 08:08:19,218 INFO L87 Difference]: Start difference. First operand 4753 states and 13218 transitions. Second operand has 36 states, 36 states have (on average 5.138888888888889) internal successors, (185), 36 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:20,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:08:20,151 INFO L93 Difference]: Finished difference Result 6921 states and 17757 transitions. [2021-06-05 08:08:20,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-06-05 08:08:20,152 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 5.138888888888889) internal successors, (185), 36 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 185 [2021-06-05 08:08:20,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:08:20,157 INFO L225 Difference]: With dead ends: 6921 [2021-06-05 08:08:20,158 INFO L226 Difference]: Without dead ends: 6651 [2021-06-05 08:08:20,158 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1632 ImplicationChecksByTransitivity, 1021.0ms TimeCoverageRelationStatistics Valid=1633, Invalid=5173, Unknown=0, NotChecked=0, Total=6806 [2021-06-05 08:08:20,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6651 states. [2021-06-05 08:08:20,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6651 to 4828. [2021-06-05 08:08:20,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4828 states, 4827 states have (on average 2.7849596022374143) internal successors, (13443), 4827 states have internal predecessors, (13443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:20,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4828 states to 4828 states and 13443 transitions. [2021-06-05 08:08:20,217 INFO L78 Accepts]: Start accepts. Automaton has 4828 states and 13443 transitions. Word has length 185 [2021-06-05 08:08:20,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:08:20,217 INFO L482 AbstractCegarLoop]: Abstraction has 4828 states and 13443 transitions. [2021-06-05 08:08:20,217 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 5.138888888888889) internal successors, (185), 36 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:20,217 INFO L276 IsEmpty]: Start isEmpty. Operand 4828 states and 13443 transitions. [2021-06-05 08:08:20,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-06-05 08:08:20,221 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:08:20,221 INFO L521 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:08:20,421 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable479,475 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:08:20,422 INFO L430 AbstractCegarLoop]: === Iteration 481 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:08:20,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:08:20,422 INFO L82 PathProgramCache]: Analyzing trace with hash 1915523081, now seen corresponding path program 472 times [2021-06-05 08:08:20,422 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:08:20,422 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843564597] [2021-06-05 08:08:20,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:08:20,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:08:20,848 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:08:20,848 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:08:20,848 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843564597] [2021-06-05 08:08:20,848 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843564597] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:08:20,848 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [707909903] [2021-06-05 08:08:20,848 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 476 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 476 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:08:20,916 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 08:08:20,916 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:08:20,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 37 conjunts are in the unsatisfiable core [2021-06-05 08:08:20,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:08:21,135 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:08:21,135 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [707909903] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:08:21,135 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:08:21,136 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 37 [2021-06-05 08:08:21,136 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278795313] [2021-06-05 08:08:21,136 INFO L462 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-06-05 08:08:21,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:08:21,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-06-05 08:08:21,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=1142, Unknown=0, NotChecked=0, Total=1332 [2021-06-05 08:08:21,136 INFO L87 Difference]: Start difference. First operand 4828 states and 13443 transitions. Second operand has 37 states, 37 states have (on average 5.054054054054054) internal successors, (187), 37 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:22,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:08:22,243 INFO L93 Difference]: Finished difference Result 6946 states and 17882 transitions. [2021-06-05 08:08:22,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-06-05 08:08:22,243 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 5.054054054054054) internal successors, (187), 37 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 185 [2021-06-05 08:08:22,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:08:22,250 INFO L225 Difference]: With dead ends: 6946 [2021-06-05 08:08:22,250 INFO L226 Difference]: Without dead ends: 6676 [2021-06-05 08:08:22,251 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1667 ImplicationChecksByTransitivity, 1202.2ms TimeCoverageRelationStatistics Valid=1663, Invalid=5477, Unknown=0, NotChecked=0, Total=7140 [2021-06-05 08:08:22,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6676 states. [2021-06-05 08:08:22,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6676 to 4903. [2021-06-05 08:08:22,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4903 states, 4902 states have (on average 2.788249694002448) internal successors, (13668), 4902 states have internal predecessors, (13668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:22,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4903 states to 4903 states and 13668 transitions. [2021-06-05 08:08:22,315 INFO L78 Accepts]: Start accepts. Automaton has 4903 states and 13668 transitions. Word has length 185 [2021-06-05 08:08:22,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:08:22,315 INFO L482 AbstractCegarLoop]: Abstraction has 4903 states and 13668 transitions. [2021-06-05 08:08:22,315 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 5.054054054054054) internal successors, (187), 37 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:22,315 INFO L276 IsEmpty]: Start isEmpty. Operand 4903 states and 13668 transitions. [2021-06-05 08:08:22,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-06-05 08:08:22,319 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:08:22,319 INFO L521 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:08:22,519 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable480,476 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:08:22,520 INFO L430 AbstractCegarLoop]: === Iteration 482 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:08:22,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:08:22,520 INFO L82 PathProgramCache]: Analyzing trace with hash -361708937, now seen corresponding path program 473 times [2021-06-05 08:08:22,520 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:08:22,520 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473934925] [2021-06-05 08:08:22,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:08:22,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:08:22,904 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:08:22,904 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:08:22,904 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473934925] [2021-06-05 08:08:22,904 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473934925] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:08:22,904 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [961769662] [2021-06-05 08:08:22,904 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 477 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 477 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:08:22,975 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2021-06-05 08:08:22,976 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:08:22,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 37 conjunts are in the unsatisfiable core [2021-06-05 08:08:22,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:08:23,177 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:08:23,177 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [961769662] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:08:23,177 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:08:23,177 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2021-06-05 08:08:23,177 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986346838] [2021-06-05 08:08:23,177 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-06-05 08:08:23,177 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:08:23,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-06-05 08:08:23,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=1069, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 08:08:23,178 INFO L87 Difference]: Start difference. First operand 4903 states and 13668 transitions. Second operand has 36 states, 36 states have (on average 5.138888888888889) internal successors, (185), 36 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:24,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:08:24,163 INFO L93 Difference]: Finished difference Result 6971 states and 18007 transitions. [2021-06-05 08:08:24,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-06-05 08:08:24,164 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 5.138888888888889) internal successors, (185), 36 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 185 [2021-06-05 08:08:24,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:08:24,170 INFO L225 Difference]: With dead ends: 6971 [2021-06-05 08:08:24,170 INFO L226 Difference]: Without dead ends: 6701 [2021-06-05 08:08:24,171 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1763 ImplicationChecksByTransitivity, 1067.5ms TimeCoverageRelationStatistics Valid=1721, Invalid=5419, Unknown=0, NotChecked=0, Total=7140 [2021-06-05 08:08:24,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6701 states. [2021-06-05 08:08:24,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6701 to 4978. [2021-06-05 08:08:24,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4978 states, 4977 states have (on average 2.7914406268836647) internal successors, (13893), 4977 states have internal predecessors, (13893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:24,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4978 states to 4978 states and 13893 transitions. [2021-06-05 08:08:24,233 INFO L78 Accepts]: Start accepts. Automaton has 4978 states and 13893 transitions. Word has length 185 [2021-06-05 08:08:24,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:08:24,233 INFO L482 AbstractCegarLoop]: Abstraction has 4978 states and 13893 transitions. [2021-06-05 08:08:24,233 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 5.138888888888889) internal successors, (185), 36 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:24,233 INFO L276 IsEmpty]: Start isEmpty. Operand 4978 states and 13893 transitions. [2021-06-05 08:08:24,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-06-05 08:08:24,237 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:08:24,237 INFO L521 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:08:24,437 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable481,477 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:08:24,438 INFO L430 AbstractCegarLoop]: === Iteration 483 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:08:24,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:08:24,438 INFO L82 PathProgramCache]: Analyzing trace with hash -1260232377, now seen corresponding path program 474 times [2021-06-05 08:08:24,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:08:24,438 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109749302] [2021-06-05 08:08:24,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:08:24,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:08:24,793 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:08:24,793 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:08:24,793 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109749302] [2021-06-05 08:08:24,793 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109749302] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:08:24,793 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [767491766] [2021-06-05 08:08:24,793 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 478 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 478 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:08:24,874 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2021-06-05 08:08:24,875 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:08:24,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 37 conjunts are in the unsatisfiable core [2021-06-05 08:08:24,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:08:25,092 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:08:25,093 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [767491766] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:08:25,093 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:08:25,093 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 37 [2021-06-05 08:08:25,093 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496108458] [2021-06-05 08:08:25,093 INFO L462 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-06-05 08:08:25,093 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:08:25,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-06-05 08:08:25,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=1146, Unknown=0, NotChecked=0, Total=1332 [2021-06-05 08:08:25,094 INFO L87 Difference]: Start difference. First operand 4978 states and 13893 transitions. Second operand has 37 states, 37 states have (on average 5.054054054054054) internal successors, (187), 37 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:26,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:08:26,244 INFO L93 Difference]: Finished difference Result 6996 states and 18132 transitions. [2021-06-05 08:08:26,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-06-05 08:08:26,245 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 5.054054054054054) internal successors, (187), 37 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 185 [2021-06-05 08:08:26,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:08:26,251 INFO L225 Difference]: With dead ends: 6996 [2021-06-05 08:08:26,251 INFO L226 Difference]: Without dead ends: 6726 [2021-06-05 08:08:26,252 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1801 ImplicationChecksByTransitivity, 1199.7ms TimeCoverageRelationStatistics Valid=1753, Invalid=5729, Unknown=0, NotChecked=0, Total=7482 [2021-06-05 08:08:26,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6726 states. [2021-06-05 08:08:26,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6726 to 5053. [2021-06-05 08:08:26,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5053 states, 5052 states have (on average 2.794536817102138) internal successors, (14118), 5052 states have internal predecessors, (14118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:26,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5053 states to 5053 states and 14118 transitions. [2021-06-05 08:08:26,313 INFO L78 Accepts]: Start accepts. Automaton has 5053 states and 14118 transitions. Word has length 185 [2021-06-05 08:08:26,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:08:26,313 INFO L482 AbstractCegarLoop]: Abstraction has 5053 states and 14118 transitions. [2021-06-05 08:08:26,313 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 5.054054054054054) internal successors, (187), 37 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:26,313 INFO L276 IsEmpty]: Start isEmpty. Operand 5053 states and 14118 transitions. [2021-06-05 08:08:26,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-06-05 08:08:26,317 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:08:26,317 INFO L521 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:08:26,517 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable482,478 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:08:26,518 INFO L430 AbstractCegarLoop]: === Iteration 484 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:08:26,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:08:26,518 INFO L82 PathProgramCache]: Analyzing trace with hash 1419781429, now seen corresponding path program 475 times [2021-06-05 08:08:26,518 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:08:26,518 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106589287] [2021-06-05 08:08:26,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:08:26,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:08:26,865 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:08:26,865 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:08:26,865 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106589287] [2021-06-05 08:08:26,866 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106589287] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:08:26,866 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [702394706] [2021-06-05 08:08:26,866 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 479 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 479 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:08:26,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:08:26,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 37 conjunts are in the unsatisfiable core [2021-06-05 08:08:26,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:08:27,132 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:08:27,132 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [702394706] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:08:27,132 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:08:27,132 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2021-06-05 08:08:27,132 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063692154] [2021-06-05 08:08:27,132 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-06-05 08:08:27,132 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:08:27,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-06-05 08:08:27,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=1070, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 08:08:27,133 INFO L87 Difference]: Start difference. First operand 5053 states and 14118 transitions. Second operand has 36 states, 36 states have (on average 5.138888888888889) internal successors, (185), 36 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:28,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:08:28,150 INFO L93 Difference]: Finished difference Result 7021 states and 18257 transitions. [2021-06-05 08:08:28,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-06-05 08:08:28,151 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 5.138888888888889) internal successors, (185), 36 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 185 [2021-06-05 08:08:28,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:08:28,158 INFO L225 Difference]: With dead ends: 7021 [2021-06-05 08:08:28,158 INFO L226 Difference]: Without dead ends: 6751 [2021-06-05 08:08:28,159 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1898 ImplicationChecksByTransitivity, 1056.4ms TimeCoverageRelationStatistics Valid=1825, Invalid=5657, Unknown=0, NotChecked=0, Total=7482 [2021-06-05 08:08:28,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6751 states. [2021-06-05 08:08:28,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6751 to 5128. [2021-06-05 08:08:28,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5128 states, 5127 states have (on average 2.7975424224692804) internal successors, (14343), 5127 states have internal predecessors, (14343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:28,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5128 states to 5128 states and 14343 transitions. [2021-06-05 08:08:28,245 INFO L78 Accepts]: Start accepts. Automaton has 5128 states and 14343 transitions. Word has length 185 [2021-06-05 08:08:28,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:08:28,245 INFO L482 AbstractCegarLoop]: Abstraction has 5128 states and 14343 transitions. [2021-06-05 08:08:28,245 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 5.138888888888889) internal successors, (185), 36 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:28,245 INFO L276 IsEmpty]: Start isEmpty. Operand 5128 states and 14343 transitions. [2021-06-05 08:08:28,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-06-05 08:08:28,249 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:08:28,249 INFO L521 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:08:28,449 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable483,479 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:08:28,450 INFO L430 AbstractCegarLoop]: === Iteration 485 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:08:28,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:08:28,450 INFO L82 PathProgramCache]: Analyzing trace with hash 1039337477, now seen corresponding path program 476 times [2021-06-05 08:08:28,450 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:08:28,450 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679099414] [2021-06-05 08:08:28,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:08:28,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:08:28,806 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:08:28,806 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:08:28,806 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679099414] [2021-06-05 08:08:28,806 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679099414] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:08:28,806 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2002020136] [2021-06-05 08:08:28,806 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 480 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 480 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:08:28,873 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 08:08:28,873 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:08:28,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 37 conjunts are in the unsatisfiable core [2021-06-05 08:08:28,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:08:29,088 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:08:29,088 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2002020136] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:08:29,088 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:08:29,089 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 37 [2021-06-05 08:08:29,089 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022661874] [2021-06-05 08:08:29,089 INFO L462 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-06-05 08:08:29,089 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:08:29,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-06-05 08:08:29,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=1146, Unknown=0, NotChecked=0, Total=1332 [2021-06-05 08:08:29,089 INFO L87 Difference]: Start difference. First operand 5128 states and 14343 transitions. Second operand has 37 states, 37 states have (on average 5.054054054054054) internal successors, (187), 37 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:30,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:08:30,297 INFO L93 Difference]: Finished difference Result 7046 states and 18382 transitions. [2021-06-05 08:08:30,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-06-05 08:08:30,297 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 5.054054054054054) internal successors, (187), 37 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 185 [2021-06-05 08:08:30,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:08:30,304 INFO L225 Difference]: With dead ends: 7046 [2021-06-05 08:08:30,304 INFO L226 Difference]: Without dead ends: 6776 [2021-06-05 08:08:30,305 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1939 ImplicationChecksByTransitivity, 1235.9ms TimeCoverageRelationStatistics Valid=1859, Invalid=5973, Unknown=0, NotChecked=0, Total=7832 [2021-06-05 08:08:30,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6776 states. [2021-06-05 08:08:30,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6776 to 5203. [2021-06-05 08:08:30,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5203 states, 5202 states have (on average 2.800461361014994) internal successors, (14568), 5202 states have internal predecessors, (14568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:30,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5203 states to 5203 states and 14568 transitions. [2021-06-05 08:08:30,373 INFO L78 Accepts]: Start accepts. Automaton has 5203 states and 14568 transitions. Word has length 185 [2021-06-05 08:08:30,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:08:30,373 INFO L482 AbstractCegarLoop]: Abstraction has 5203 states and 14568 transitions. [2021-06-05 08:08:30,374 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 5.054054054054054) internal successors, (187), 37 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:30,374 INFO L276 IsEmpty]: Start isEmpty. Operand 5203 states and 14568 transitions. [2021-06-05 08:08:30,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-06-05 08:08:30,378 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:08:30,378 INFO L521 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:08:30,578 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable484,480 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:08:30,578 INFO L430 AbstractCegarLoop]: === Iteration 486 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:08:30,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:08:30,579 INFO L82 PathProgramCache]: Analyzing trace with hash 1663712627, now seen corresponding path program 477 times [2021-06-05 08:08:30,579 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:08:30,579 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440497643] [2021-06-05 08:08:30,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:08:30,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:08:30,919 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:08:30,919 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:08:30,919 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440497643] [2021-06-05 08:08:30,919 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440497643] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:08:30,919 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1790866388] [2021-06-05 08:08:30,919 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 481 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 481 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:08:31,001 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2021-06-05 08:08:31,001 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:08:31,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 37 conjunts are in the unsatisfiable core [2021-06-05 08:08:31,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:08:31,229 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:08:31,229 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1790866388] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:08:31,229 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:08:31,230 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2021-06-05 08:08:31,230 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262171813] [2021-06-05 08:08:31,230 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-06-05 08:08:31,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:08:31,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-06-05 08:08:31,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=1067, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 08:08:31,230 INFO L87 Difference]: Start difference. First operand 5203 states and 14568 transitions. Second operand has 36 states, 36 states have (on average 5.138888888888889) internal successors, (185), 36 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:32,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:08:32,287 INFO L93 Difference]: Finished difference Result 7071 states and 18507 transitions. [2021-06-05 08:08:32,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-06-05 08:08:32,287 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 5.138888888888889) internal successors, (185), 36 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 185 [2021-06-05 08:08:32,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:08:32,294 INFO L225 Difference]: With dead ends: 7071 [2021-06-05 08:08:32,294 INFO L226 Difference]: Without dead ends: 6801 [2021-06-05 08:08:32,295 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2037 ImplicationChecksByTransitivity, 1094.2ms TimeCoverageRelationStatistics Valid=1945, Invalid=5887, Unknown=0, NotChecked=0, Total=7832 [2021-06-05 08:08:32,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6801 states. [2021-06-05 08:08:32,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6801 to 5278. [2021-06-05 08:08:32,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5278 states, 5277 states have (on average 2.803297328027288) internal successors, (14793), 5277 states have internal predecessors, (14793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:32,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5278 states to 5278 states and 14793 transitions. [2021-06-05 08:08:32,359 INFO L78 Accepts]: Start accepts. Automaton has 5278 states and 14793 transitions. Word has length 185 [2021-06-05 08:08:32,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:08:32,359 INFO L482 AbstractCegarLoop]: Abstraction has 5278 states and 14793 transitions. [2021-06-05 08:08:32,359 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 5.138888888888889) internal successors, (185), 36 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:32,359 INFO L276 IsEmpty]: Start isEmpty. Operand 5278 states and 14793 transitions. [2021-06-05 08:08:32,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-06-05 08:08:32,363 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:08:32,363 INFO L521 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:08:32,564 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable485,481 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:08:32,564 INFO L430 AbstractCegarLoop]: === Iteration 487 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:08:32,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:08:32,564 INFO L82 PathProgramCache]: Analyzing trace with hash -1822202813, now seen corresponding path program 478 times [2021-06-05 08:08:32,564 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:08:32,564 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047915060] [2021-06-05 08:08:32,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:08:32,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:08:32,937 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:08:32,938 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:08:32,938 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047915060] [2021-06-05 08:08:32,938 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047915060] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:08:32,938 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2014717010] [2021-06-05 08:08:32,938 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 482 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 482 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:08:33,006 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 08:08:33,006 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:08:33,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 37 conjunts are in the unsatisfiable core [2021-06-05 08:08:33,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:08:33,221 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:08:33,221 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2014717010] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:08:33,221 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:08:33,222 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 37 [2021-06-05 08:08:33,222 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311239482] [2021-06-05 08:08:33,222 INFO L462 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-06-05 08:08:33,222 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:08:33,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-06-05 08:08:33,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=1142, Unknown=0, NotChecked=0, Total=1332 [2021-06-05 08:08:33,222 INFO L87 Difference]: Start difference. First operand 5278 states and 14793 transitions. Second operand has 37 states, 37 states have (on average 5.054054054054054) internal successors, (187), 37 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:34,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:08:34,471 INFO L93 Difference]: Finished difference Result 7096 states and 18632 transitions. [2021-06-05 08:08:34,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-06-05 08:08:34,471 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 5.054054054054054) internal successors, (187), 37 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 185 [2021-06-05 08:08:34,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:08:34,478 INFO L225 Difference]: With dead ends: 7096 [2021-06-05 08:08:34,478 INFO L226 Difference]: Without dead ends: 6826 [2021-06-05 08:08:34,479 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2081 ImplicationChecksByTransitivity, 1303.8ms TimeCoverageRelationStatistics Valid=1981, Invalid=6209, Unknown=0, NotChecked=0, Total=8190 [2021-06-05 08:08:34,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6826 states. [2021-06-05 08:08:34,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6826 to 5353. [2021-06-05 08:08:34,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5353 states, 5352 states have (on average 2.8060538116591927) internal successors, (15018), 5352 states have internal predecessors, (15018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:34,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5353 states to 5353 states and 15018 transitions. [2021-06-05 08:08:34,541 INFO L78 Accepts]: Start accepts. Automaton has 5353 states and 15018 transitions. Word has length 185 [2021-06-05 08:08:34,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:08:34,541 INFO L482 AbstractCegarLoop]: Abstraction has 5353 states and 15018 transitions. [2021-06-05 08:08:34,541 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 5.054054054054054) internal successors, (187), 37 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:34,541 INFO L276 IsEmpty]: Start isEmpty. Operand 5353 states and 15018 transitions. [2021-06-05 08:08:34,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-06-05 08:08:34,545 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:08:34,545 INFO L521 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:08:34,745 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 482 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable486 [2021-06-05 08:08:34,746 INFO L430 AbstractCegarLoop]: === Iteration 488 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:08:34,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:08:34,746 INFO L82 PathProgramCache]: Analyzing trace with hash 1080814385, now seen corresponding path program 479 times [2021-06-05 08:08:34,746 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:08:34,746 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387305773] [2021-06-05 08:08:34,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:08:34,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:08:35,077 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:08:35,077 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:08:35,077 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387305773] [2021-06-05 08:08:35,077 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387305773] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:08:35,077 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1268082948] [2021-06-05 08:08:35,077 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 483 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 483 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:08:35,147 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2021-06-05 08:08:35,148 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:08:35,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 37 conjunts are in the unsatisfiable core [2021-06-05 08:08:35,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:08:35,342 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:08:35,342 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1268082948] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:08:35,342 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:08:35,343 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2021-06-05 08:08:35,343 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719132931] [2021-06-05 08:08:35,343 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-06-05 08:08:35,343 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:08:35,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-06-05 08:08:35,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=1060, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 08:08:35,343 INFO L87 Difference]: Start difference. First operand 5353 states and 15018 transitions. Second operand has 36 states, 36 states have (on average 5.138888888888889) internal successors, (185), 36 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:36,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:08:36,440 INFO L93 Difference]: Finished difference Result 7121 states and 18757 transitions. [2021-06-05 08:08:36,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-06-05 08:08:36,440 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 5.138888888888889) internal successors, (185), 36 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 185 [2021-06-05 08:08:36,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:08:36,448 INFO L225 Difference]: With dead ends: 7121 [2021-06-05 08:08:36,448 INFO L226 Difference]: Without dead ends: 6851 [2021-06-05 08:08:36,449 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2180 ImplicationChecksByTransitivity, 1123.9ms TimeCoverageRelationStatistics Valid=2081, Invalid=6109, Unknown=0, NotChecked=0, Total=8190 [2021-06-05 08:08:36,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6851 states. [2021-06-05 08:08:36,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6851 to 5428. [2021-06-05 08:08:36,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5428 states, 5427 states have (on average 2.80873410724157) internal successors, (15243), 5427 states have internal predecessors, (15243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:36,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5428 states to 5428 states and 15243 transitions. [2021-06-05 08:08:36,519 INFO L78 Accepts]: Start accepts. Automaton has 5428 states and 15243 transitions. Word has length 185 [2021-06-05 08:08:36,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:08:36,519 INFO L482 AbstractCegarLoop]: Abstraction has 5428 states and 15243 transitions. [2021-06-05 08:08:36,519 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 5.138888888888889) internal successors, (185), 36 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:36,519 INFO L276 IsEmpty]: Start isEmpty. Operand 5428 states and 15243 transitions. [2021-06-05 08:08:36,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-06-05 08:08:36,523 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:08:36,523 INFO L521 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:08:36,724 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable487,483 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:08:36,724 INFO L430 AbstractCegarLoop]: === Iteration 489 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:08:36,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:08:36,724 INFO L82 PathProgramCache]: Analyzing trace with hash 835737089, now seen corresponding path program 480 times [2021-06-05 08:08:36,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:08:36,724 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335230133] [2021-06-05 08:08:36,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:08:36,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:08:37,097 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:08:37,097 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:08:37,097 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335230133] [2021-06-05 08:08:37,097 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335230133] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:08:37,097 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2123200180] [2021-06-05 08:08:37,097 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 484 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 484 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:08:37,179 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2021-06-05 08:08:37,179 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:08:37,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 37 conjunts are in the unsatisfiable core [2021-06-05 08:08:37,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:08:37,391 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:08:37,391 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2123200180] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:08:37,391 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:08:37,391 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 37 [2021-06-05 08:08:37,391 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450090434] [2021-06-05 08:08:37,391 INFO L462 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-06-05 08:08:37,392 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:08:37,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-06-05 08:08:37,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=1134, Unknown=0, NotChecked=0, Total=1332 [2021-06-05 08:08:37,392 INFO L87 Difference]: Start difference. First operand 5428 states and 15243 transitions. Second operand has 37 states, 37 states have (on average 5.054054054054054) internal successors, (187), 37 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:38,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:08:38,707 INFO L93 Difference]: Finished difference Result 7146 states and 18882 transitions. [2021-06-05 08:08:38,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-06-05 08:08:38,707 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 5.054054054054054) internal successors, (187), 37 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 185 [2021-06-05 08:08:38,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:08:38,715 INFO L225 Difference]: With dead ends: 7146 [2021-06-05 08:08:38,715 INFO L226 Difference]: Without dead ends: 6876 [2021-06-05 08:08:38,716 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2227 ImplicationChecksByTransitivity, 1330.7ms TimeCoverageRelationStatistics Valid=2119, Invalid=6437, Unknown=0, NotChecked=0, Total=8556 [2021-06-05 08:08:38,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6876 states. [2021-06-05 08:08:38,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6876 to 5503. [2021-06-05 08:08:38,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5503 states, 5502 states have (on average 2.8113413304253) internal successors, (15468), 5502 states have internal predecessors, (15468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:38,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5503 states to 5503 states and 15468 transitions. [2021-06-05 08:08:38,786 INFO L78 Accepts]: Start accepts. Automaton has 5503 states and 15468 transitions. Word has length 185 [2021-06-05 08:08:38,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:08:38,787 INFO L482 AbstractCegarLoop]: Abstraction has 5503 states and 15468 transitions. [2021-06-05 08:08:38,787 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 5.054054054054054) internal successors, (187), 37 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:38,787 INFO L276 IsEmpty]: Start isEmpty. Operand 5503 states and 15468 transitions. [2021-06-05 08:08:38,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-06-05 08:08:38,791 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:08:38,791 INFO L521 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:08:38,991 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 484 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable488 [2021-06-05 08:08:38,992 INFO L430 AbstractCegarLoop]: === Iteration 490 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:08:38,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:08:38,992 INFO L82 PathProgramCache]: Analyzing trace with hash 458886767, now seen corresponding path program 481 times [2021-06-05 08:08:38,992 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:08:38,992 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117321427] [2021-06-05 08:08:38,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:08:39,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:08:39,320 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:08:39,321 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:08:39,321 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117321427] [2021-06-05 08:08:39,321 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117321427] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:08:39,321 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [568330356] [2021-06-05 08:08:39,321 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 485 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 485 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:08:39,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:08:39,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 37 conjunts are in the unsatisfiable core [2021-06-05 08:08:39,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:08:39,609 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:08:39,610 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [568330356] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:08:39,610 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:08:39,610 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2021-06-05 08:08:39,610 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715617702] [2021-06-05 08:08:39,610 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-06-05 08:08:39,610 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:08:39,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-06-05 08:08:39,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=1049, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 08:08:39,611 INFO L87 Difference]: Start difference. First operand 5503 states and 15468 transitions. Second operand has 36 states, 36 states have (on average 5.138888888888889) internal successors, (185), 36 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:40,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:08:40,750 INFO L93 Difference]: Finished difference Result 7171 states and 19007 transitions. [2021-06-05 08:08:40,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-06-05 08:08:40,750 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 5.138888888888889) internal successors, (185), 36 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 185 [2021-06-05 08:08:40,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:08:40,758 INFO L225 Difference]: With dead ends: 7171 [2021-06-05 08:08:40,758 INFO L226 Difference]: Without dead ends: 6901 [2021-06-05 08:08:40,759 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2327 ImplicationChecksByTransitivity, 1147.3ms TimeCoverageRelationStatistics Valid=2233, Invalid=6323, Unknown=0, NotChecked=0, Total=8556 [2021-06-05 08:08:40,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6901 states. [2021-06-05 08:08:40,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6901 to 5578. [2021-06-05 08:08:40,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5578 states, 5577 states have (on average 2.8138784292630445) internal successors, (15693), 5577 states have internal predecessors, (15693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:40,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5578 states to 5578 states and 15693 transitions. [2021-06-05 08:08:40,829 INFO L78 Accepts]: Start accepts. Automaton has 5578 states and 15693 transitions. Word has length 185 [2021-06-05 08:08:40,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:08:40,829 INFO L482 AbstractCegarLoop]: Abstraction has 5578 states and 15693 transitions. [2021-06-05 08:08:40,829 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 5.138888888888889) internal successors, (185), 36 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:40,829 INFO L276 IsEmpty]: Start isEmpty. Operand 5578 states and 15693 transitions. [2021-06-05 08:08:40,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-06-05 08:08:40,834 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:08:40,834 INFO L521 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:08:41,034 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable489,485 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:08:41,034 INFO L430 AbstractCegarLoop]: === Iteration 491 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:08:41,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:08:41,035 INFO L82 PathProgramCache]: Analyzing trace with hash 1785642303, now seen corresponding path program 482 times [2021-06-05 08:08:41,035 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:08:41,035 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157975773] [2021-06-05 08:08:41,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:08:41,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:08:41,365 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:08:41,365 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:08:41,365 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157975773] [2021-06-05 08:08:41,365 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157975773] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:08:41,365 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1681477871] [2021-06-05 08:08:41,365 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 486 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 486 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:08:41,431 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 08:08:41,432 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:08:41,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 37 conjunts are in the unsatisfiable core [2021-06-05 08:08:41,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:08:41,643 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:08:41,643 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1681477871] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:08:41,643 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:08:41,643 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 37 [2021-06-05 08:08:41,643 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507964171] [2021-06-05 08:08:41,643 INFO L462 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-06-05 08:08:41,644 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:08:41,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-06-05 08:08:41,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=1122, Unknown=0, NotChecked=0, Total=1332 [2021-06-05 08:08:41,644 INFO L87 Difference]: Start difference. First operand 5578 states and 15693 transitions. Second operand has 37 states, 37 states have (on average 5.054054054054054) internal successors, (187), 37 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:43,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:08:43,021 INFO L93 Difference]: Finished difference Result 7196 states and 19132 transitions. [2021-06-05 08:08:43,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-06-05 08:08:43,022 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 5.054054054054054) internal successors, (187), 37 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 185 [2021-06-05 08:08:43,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:08:43,029 INFO L225 Difference]: With dead ends: 7196 [2021-06-05 08:08:43,029 INFO L226 Difference]: Without dead ends: 6926 [2021-06-05 08:08:43,030 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2377 ImplicationChecksByTransitivity, 1384.8ms TimeCoverageRelationStatistics Valid=2273, Invalid=6657, Unknown=0, NotChecked=0, Total=8930 [2021-06-05 08:08:43,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6926 states. [2021-06-05 08:08:43,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6926 to 5653. [2021-06-05 08:08:43,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5653 states, 5652 states have (on average 2.816348195329087) internal successors, (15918), 5652 states have internal predecessors, (15918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:43,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5653 states to 5653 states and 15918 transitions. [2021-06-05 08:08:43,101 INFO L78 Accepts]: Start accepts. Automaton has 5653 states and 15918 transitions. Word has length 185 [2021-06-05 08:08:43,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:08:43,101 INFO L482 AbstractCegarLoop]: Abstraction has 5653 states and 15918 transitions. [2021-06-05 08:08:43,101 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 5.054054054054054) internal successors, (187), 37 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:43,101 INFO L276 IsEmpty]: Start isEmpty. Operand 5653 states and 15918 transitions. [2021-06-05 08:08:43,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-06-05 08:08:43,106 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:08:43,106 INFO L521 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:08:43,306 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 486 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable490 [2021-06-05 08:08:43,307 INFO L430 AbstractCegarLoop]: === Iteration 492 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:08:43,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:08:43,307 INFO L82 PathProgramCache]: Analyzing trace with hash -2055108819, now seen corresponding path program 483 times [2021-06-05 08:08:43,307 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:08:43,307 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709332859] [2021-06-05 08:08:43,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:08:43,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:08:43,630 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:08:43,631 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:08:43,631 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709332859] [2021-06-05 08:08:43,631 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709332859] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:08:43,631 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [880537041] [2021-06-05 08:08:43,631 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 487 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 487 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:08:43,711 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2021-06-05 08:08:43,711 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:08:43,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 37 conjunts are in the unsatisfiable core [2021-06-05 08:08:43,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:08:43,903 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:08:43,903 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [880537041] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:08:43,903 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:08:43,903 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2021-06-05 08:08:43,903 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118130170] [2021-06-05 08:08:43,903 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-06-05 08:08:43,904 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:08:43,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-06-05 08:08:43,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=1034, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 08:08:43,904 INFO L87 Difference]: Start difference. First operand 5653 states and 15918 transitions. Second operand has 36 states, 36 states have (on average 5.138888888888889) internal successors, (185), 36 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:45,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:08:45,086 INFO L93 Difference]: Finished difference Result 7221 states and 19257 transitions. [2021-06-05 08:08:45,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-06-05 08:08:45,087 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 5.138888888888889) internal successors, (185), 36 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 185 [2021-06-05 08:08:45,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:08:45,094 INFO L225 Difference]: With dead ends: 7221 [2021-06-05 08:08:45,094 INFO L226 Difference]: Without dead ends: 6951 [2021-06-05 08:08:45,095 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2478 ImplicationChecksByTransitivity, 1184.3ms TimeCoverageRelationStatistics Valid=2401, Invalid=6529, Unknown=0, NotChecked=0, Total=8930 [2021-06-05 08:08:45,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6951 states. [2021-06-05 08:08:45,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6951 to 5728. [2021-06-05 08:08:45,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5728 states, 5727 states have (on average 2.818753273965427) internal successors, (16143), 5727 states have internal predecessors, (16143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:45,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5728 states to 5728 states and 16143 transitions. [2021-06-05 08:08:45,185 INFO L78 Accepts]: Start accepts. Automaton has 5728 states and 16143 transitions. Word has length 185 [2021-06-05 08:08:45,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:08:45,185 INFO L482 AbstractCegarLoop]: Abstraction has 5728 states and 16143 transitions. [2021-06-05 08:08:45,185 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 5.138888888888889) internal successors, (185), 36 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:45,185 INFO L276 IsEmpty]: Start isEmpty. Operand 5728 states and 16143 transitions. [2021-06-05 08:08:45,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-06-05 08:08:45,190 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:08:45,190 INFO L521 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:08:45,390 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable491,487 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:08:45,391 INFO L430 AbstractCegarLoop]: === Iteration 493 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:08:45,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:08:45,391 INFO L82 PathProgramCache]: Analyzing trace with hash -1056212483, now seen corresponding path program 484 times [2021-06-05 08:08:45,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:08:45,391 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79525300] [2021-06-05 08:08:45,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:08:45,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:08:45,727 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:08:45,727 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:08:45,727 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79525300] [2021-06-05 08:08:45,727 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79525300] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:08:45,727 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1809079034] [2021-06-05 08:08:45,727 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 488 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 488 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:08:45,792 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 08:08:45,792 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:08:45,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 37 conjunts are in the unsatisfiable core [2021-06-05 08:08:45,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:08:45,998 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:08:45,999 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1809079034] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:08:45,999 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:08:45,999 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 37 [2021-06-05 08:08:45,999 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274477315] [2021-06-05 08:08:45,999 INFO L462 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-06-05 08:08:45,999 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:08:45,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-06-05 08:08:45,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=1106, Unknown=0, NotChecked=0, Total=1332 [2021-06-05 08:08:45,999 INFO L87 Difference]: Start difference. First operand 5728 states and 16143 transitions. Second operand has 37 states, 37 states have (on average 5.054054054054054) internal successors, (187), 37 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:47,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:08:47,452 INFO L93 Difference]: Finished difference Result 7246 states and 19382 transitions. [2021-06-05 08:08:47,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-06-05 08:08:47,452 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 5.054054054054054) internal successors, (187), 37 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 185 [2021-06-05 08:08:47,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:08:47,459 INFO L225 Difference]: With dead ends: 7246 [2021-06-05 08:08:47,460 INFO L226 Difference]: Without dead ends: 6976 [2021-06-05 08:08:47,460 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2531 ImplicationChecksByTransitivity, 1415.6ms TimeCoverageRelationStatistics Valid=2443, Invalid=6869, Unknown=0, NotChecked=0, Total=9312 [2021-06-05 08:08:47,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6976 states. [2021-06-05 08:08:47,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6976 to 5803. [2021-06-05 08:08:47,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5803 states, 5802 states have (on average 2.8210961737331957) internal successors, (16368), 5802 states have internal predecessors, (16368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:47,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5803 states to 5803 states and 16368 transitions. [2021-06-05 08:08:47,530 INFO L78 Accepts]: Start accepts. Automaton has 5803 states and 16368 transitions. Word has length 185 [2021-06-05 08:08:47,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:08:47,530 INFO L482 AbstractCegarLoop]: Abstraction has 5803 states and 16368 transitions. [2021-06-05 08:08:47,530 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 5.054054054054054) internal successors, (187), 37 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:47,530 INFO L276 IsEmpty]: Start isEmpty. Operand 5803 states and 16368 transitions. [2021-06-05 08:08:47,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-06-05 08:08:47,535 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:08:47,535 INFO L521 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:08:47,735 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable492,488 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:08:47,736 INFO L430 AbstractCegarLoop]: === Iteration 494 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:08:47,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:08:47,736 INFO L82 PathProgramCache]: Analyzing trace with hash 1359426923, now seen corresponding path program 485 times [2021-06-05 08:08:47,736 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:08:47,736 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590336345] [2021-06-05 08:08:47,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:08:47,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:08:48,094 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:08:48,095 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:08:48,095 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590336345] [2021-06-05 08:08:48,095 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590336345] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:08:48,095 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [932374513] [2021-06-05 08:08:48,095 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 489 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 489 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:08:48,162 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2021-06-05 08:08:48,163 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:08:48,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 37 conjunts are in the unsatisfiable core [2021-06-05 08:08:48,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:08:48,349 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:08:48,349 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [932374513] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:08:48,350 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:08:48,350 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2021-06-05 08:08:48,350 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689822047] [2021-06-05 08:08:48,350 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-06-05 08:08:48,350 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:08:48,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-06-05 08:08:48,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=245, Invalid=1015, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 08:08:48,350 INFO L87 Difference]: Start difference. First operand 5803 states and 16368 transitions. Second operand has 36 states, 36 states have (on average 5.138888888888889) internal successors, (185), 36 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:49,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:08:49,592 INFO L93 Difference]: Finished difference Result 7271 states and 19507 transitions. [2021-06-05 08:08:49,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-06-05 08:08:49,592 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 5.138888888888889) internal successors, (185), 36 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 185 [2021-06-05 08:08:49,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:08:49,600 INFO L225 Difference]: With dead ends: 7271 [2021-06-05 08:08:49,600 INFO L226 Difference]: Without dead ends: 7001 [2021-06-05 08:08:49,601 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2633 ImplicationChecksByTransitivity, 1252.4ms TimeCoverageRelationStatistics Valid=2585, Invalid=6727, Unknown=0, NotChecked=0, Total=9312 [2021-06-05 08:08:49,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7001 states. [2021-06-05 08:08:49,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7001 to 5878. [2021-06-05 08:08:49,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5878 states, 5877 states have (on average 2.8233792751403777) internal successors, (16593), 5877 states have internal predecessors, (16593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:49,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5878 states to 5878 states and 16593 transitions. [2021-06-05 08:08:49,677 INFO L78 Accepts]: Start accepts. Automaton has 5878 states and 16593 transitions. Word has length 185 [2021-06-05 08:08:49,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:08:49,677 INFO L482 AbstractCegarLoop]: Abstraction has 5878 states and 16593 transitions. [2021-06-05 08:08:49,677 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 5.138888888888889) internal successors, (185), 36 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:49,677 INFO L276 IsEmpty]: Start isEmpty. Operand 5878 states and 16593 transitions. [2021-06-05 08:08:49,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-06-05 08:08:49,682 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:08:49,682 INFO L521 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:08:49,882 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable493,489 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:08:49,882 INFO L430 AbstractCegarLoop]: === Iteration 495 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:08:49,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:08:49,883 INFO L82 PathProgramCache]: Analyzing trace with hash -905221061, now seen corresponding path program 486 times [2021-06-05 08:08:49,883 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:08:49,883 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725010757] [2021-06-05 08:08:49,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:08:49,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:08:50,216 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:08:50,216 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:08:50,216 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725010757] [2021-06-05 08:08:50,216 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725010757] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:08:50,216 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1266122083] [2021-06-05 08:08:50,216 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 490 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 490 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:08:50,296 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2021-06-05 08:08:50,297 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:08:50,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 37 conjunts are in the unsatisfiable core [2021-06-05 08:08:50,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:08:50,503 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:08:50,504 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1266122083] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:08:50,504 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:08:50,504 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 37 [2021-06-05 08:08:50,504 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429504206] [2021-06-05 08:08:50,504 INFO L462 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-06-05 08:08:50,504 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:08:50,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-06-05 08:08:50,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=246, Invalid=1086, Unknown=0, NotChecked=0, Total=1332 [2021-06-05 08:08:50,504 INFO L87 Difference]: Start difference. First operand 5878 states and 16593 transitions. Second operand has 37 states, 37 states have (on average 5.054054054054054) internal successors, (187), 37 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:52,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:08:52,001 INFO L93 Difference]: Finished difference Result 7296 states and 19632 transitions. [2021-06-05 08:08:52,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-06-05 08:08:52,001 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 5.054054054054054) internal successors, (187), 37 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 185 [2021-06-05 08:08:52,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:08:52,009 INFO L225 Difference]: With dead ends: 7296 [2021-06-05 08:08:52,009 INFO L226 Difference]: Without dead ends: 7026 [2021-06-05 08:08:52,010 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2689 ImplicationChecksByTransitivity, 1482.0ms TimeCoverageRelationStatistics Valid=2629, Invalid=7073, Unknown=0, NotChecked=0, Total=9702 [2021-06-05 08:08:52,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7026 states. [2021-06-05 08:08:52,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7026 to 5953. [2021-06-05 08:08:52,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5953 states, 5952 states have (on average 2.8256048387096775) internal successors, (16818), 5952 states have internal predecessors, (16818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:52,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5953 states to 5953 states and 16818 transitions. [2021-06-05 08:08:52,081 INFO L78 Accepts]: Start accepts. Automaton has 5953 states and 16818 transitions. Word has length 185 [2021-06-05 08:08:52,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:08:52,082 INFO L482 AbstractCegarLoop]: Abstraction has 5953 states and 16818 transitions. [2021-06-05 08:08:52,082 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 5.054054054054054) internal successors, (187), 37 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:52,082 INFO L276 IsEmpty]: Start isEmpty. Operand 5953 states and 16818 transitions. [2021-06-05 08:08:52,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-06-05 08:08:52,086 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:08:52,086 INFO L521 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:08:52,287 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 490 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable494 [2021-06-05 08:08:52,287 INFO L430 AbstractCegarLoop]: === Iteration 496 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:08:52,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:08:52,287 INFO L82 PathProgramCache]: Analyzing trace with hash -290981591, now seen corresponding path program 487 times [2021-06-05 08:08:52,288 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:08:52,288 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949242471] [2021-06-05 08:08:52,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:08:52,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:08:52,621 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:08:52,621 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:08:52,621 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949242471] [2021-06-05 08:08:52,621 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949242471] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:08:52,621 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1284309402] [2021-06-05 08:08:52,622 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 491 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 491 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:08:52,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:08:52,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 37 conjunts are in the unsatisfiable core [2021-06-05 08:08:52,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:08:52,874 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:08:52,874 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1284309402] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:08:52,874 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:08:52,874 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2021-06-05 08:08:52,874 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838617517] [2021-06-05 08:08:52,874 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-06-05 08:08:52,874 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:08:52,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-06-05 08:08:52,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=268, Invalid=992, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 08:08:52,875 INFO L87 Difference]: Start difference. First operand 5953 states and 16818 transitions. Second operand has 36 states, 36 states have (on average 5.138888888888889) internal successors, (185), 36 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:54,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:08:54,173 INFO L93 Difference]: Finished difference Result 7366 states and 19877 transitions. [2021-06-05 08:08:54,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2021-06-05 08:08:54,173 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 5.138888888888889) internal successors, (185), 36 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 185 [2021-06-05 08:08:54,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:08:54,180 INFO L225 Difference]: With dead ends: 7366 [2021-06-05 08:08:54,180 INFO L226 Difference]: Without dead ends: 7096 [2021-06-05 08:08:54,181 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2792 ImplicationChecksByTransitivity, 1254.2ms TimeCoverageRelationStatistics Valid=2785, Invalid=6917, Unknown=0, NotChecked=0, Total=9702 [2021-06-05 08:08:54,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7096 states. [2021-06-05 08:08:54,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7096 to 6028. [2021-06-05 08:08:54,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6028 states, 6027 states have (on average 2.83026381284221) internal successors, (17058), 6027 states have internal predecessors, (17058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:54,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6028 states to 6028 states and 17058 transitions. [2021-06-05 08:08:54,253 INFO L78 Accepts]: Start accepts. Automaton has 6028 states and 17058 transitions. Word has length 185 [2021-06-05 08:08:54,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:08:54,253 INFO L482 AbstractCegarLoop]: Abstraction has 6028 states and 17058 transitions. [2021-06-05 08:08:54,253 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 5.138888888888889) internal successors, (185), 36 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:54,253 INFO L276 IsEmpty]: Start isEmpty. Operand 6028 states and 17058 transitions. [2021-06-05 08:08:54,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-06-05 08:08:54,258 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:08:54,258 INFO L521 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:08:54,458 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable495,491 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:08:54,459 INFO L430 AbstractCegarLoop]: === Iteration 497 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:08:54,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:08:54,459 INFO L82 PathProgramCache]: Analyzing trace with hash -2006223879, now seen corresponding path program 488 times [2021-06-05 08:08:54,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:08:54,459 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359383672] [2021-06-05 08:08:54,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:08:54,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:08:54,792 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:08:54,793 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:08:54,793 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359383672] [2021-06-05 08:08:54,793 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359383672] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:08:54,793 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1461483000] [2021-06-05 08:08:54,793 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 492 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 492 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:08:54,858 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 08:08:54,858 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:08:54,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 37 conjunts are in the unsatisfiable core [2021-06-05 08:08:54,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:08:55,063 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:08:55,063 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1461483000] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:08:55,063 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:08:55,063 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 37 [2021-06-05 08:08:55,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023619003] [2021-06-05 08:08:55,063 INFO L462 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-06-05 08:08:55,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:08:55,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-06-05 08:08:55,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=270, Invalid=1062, Unknown=0, NotChecked=0, Total=1332 [2021-06-05 08:08:55,064 INFO L87 Difference]: Start difference. First operand 6028 states and 17058 transitions. Second operand has 37 states, 37 states have (on average 5.054054054054054) internal successors, (187), 37 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:56,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:08:56,718 INFO L93 Difference]: Finished difference Result 7944 states and 21503 transitions. [2021-06-05 08:08:56,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-06-05 08:08:56,718 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 5.054054054054054) internal successors, (187), 37 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 185 [2021-06-05 08:08:56,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:08:56,725 INFO L225 Difference]: With dead ends: 7944 [2021-06-05 08:08:56,726 INFO L226 Difference]: Without dead ends: 7321 [2021-06-05 08:08:56,726 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2978 ImplicationChecksByTransitivity, 1579.0ms TimeCoverageRelationStatistics Valid=2852, Invalid=7654, Unknown=0, NotChecked=0, Total=10506 [2021-06-05 08:08:56,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7321 states. [2021-06-05 08:08:56,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7321 to 6103. [2021-06-05 08:08:56,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6103 states, 6102 states have (on average 2.833169452638479) internal successors, (17288), 6102 states have internal predecessors, (17288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:56,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6103 states to 6103 states and 17288 transitions. [2021-06-05 08:08:56,791 INFO L78 Accepts]: Start accepts. Automaton has 6103 states and 17288 transitions. Word has length 185 [2021-06-05 08:08:56,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:08:56,791 INFO L482 AbstractCegarLoop]: Abstraction has 6103 states and 17288 transitions. [2021-06-05 08:08:56,791 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 5.054054054054054) internal successors, (187), 37 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:56,791 INFO L276 IsEmpty]: Start isEmpty. Operand 6103 states and 17288 transitions. [2021-06-05 08:08:56,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-06-05 08:08:56,796 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:08:56,796 INFO L521 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:08:56,996 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 492 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable496 [2021-06-05 08:08:56,997 INFO L430 AbstractCegarLoop]: === Iteration 498 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:08:56,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:08:56,997 INFO L82 PathProgramCache]: Analyzing trace with hash 1256095815, now seen corresponding path program 489 times [2021-06-05 08:08:56,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:08:56,997 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273564587] [2021-06-05 08:08:56,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:08:57,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:08:57,331 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:08:57,332 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:08:57,332 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273564587] [2021-06-05 08:08:57,332 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273564587] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:08:57,332 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1160444921] [2021-06-05 08:08:57,332 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 493 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 493 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:08:57,412 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2021-06-05 08:08:57,412 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:08:57,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 37 conjunts are in the unsatisfiable core [2021-06-05 08:08:57,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:08:57,599 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:08:57,600 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1160444921] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:08:57,600 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:08:57,600 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2021-06-05 08:08:57,600 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977358914] [2021-06-05 08:08:57,600 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-06-05 08:08:57,600 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:08:57,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-06-05 08:08:57,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=295, Invalid=965, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 08:08:57,601 INFO L87 Difference]: Start difference. First operand 6103 states and 17288 transitions. Second operand has 36 states, 36 states have (on average 5.138888888888889) internal successors, (185), 36 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:58,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:08:58,924 INFO L93 Difference]: Finished difference Result 8148 states and 22171 transitions. [2021-06-05 08:08:58,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-06-05 08:08:58,924 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 5.138888888888889) internal successors, (185), 36 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 185 [2021-06-05 08:08:58,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:08:58,933 INFO L225 Difference]: With dead ends: 8148 [2021-06-05 08:08:58,933 INFO L226 Difference]: Without dead ends: 7878 [2021-06-05 08:08:58,934 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2954 ImplicationChecksByTransitivity, 1298.7ms TimeCoverageRelationStatistics Valid=3002, Invalid=7098, Unknown=0, NotChecked=0, Total=10100 [2021-06-05 08:08:58,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7878 states. [2021-06-05 08:08:58,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7878 to 6283. [2021-06-05 08:08:58,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6283 states, 6282 states have (on average 2.840974212034384) internal successors, (17847), 6282 states have internal predecessors, (17847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:59,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6283 states to 6283 states and 17847 transitions. [2021-06-05 08:08:59,002 INFO L78 Accepts]: Start accepts. Automaton has 6283 states and 17847 transitions. Word has length 185 [2021-06-05 08:08:59,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:08:59,002 INFO L482 AbstractCegarLoop]: Abstraction has 6283 states and 17847 transitions. [2021-06-05 08:08:59,002 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 5.138888888888889) internal successors, (185), 36 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:59,002 INFO L276 IsEmpty]: Start isEmpty. Operand 6283 states and 17847 transitions. [2021-06-05 08:08:59,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-06-05 08:08:59,040 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:08:59,040 INFO L521 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:08:59,241 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 493 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable497 [2021-06-05 08:08:59,241 INFO L430 AbstractCegarLoop]: === Iteration 499 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:08:59,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:08:59,241 INFO L82 PathProgramCache]: Analyzing trace with hash 1278439065, now seen corresponding path program 490 times [2021-06-05 08:08:59,241 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:08:59,241 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620234851] [2021-06-05 08:08:59,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:08:59,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:08:59,587 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:08:59,587 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:08:59,587 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620234851] [2021-06-05 08:08:59,587 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620234851] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:08:59,587 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1206344447] [2021-06-05 08:08:59,587 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 494 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 494 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:08:59,654 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 08:08:59,654 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:08:59,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 37 conjunts are in the unsatisfiable core [2021-06-05 08:08:59,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:08:59,856 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:08:59,857 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1206344447] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:08:59,857 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:08:59,857 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 37 [2021-06-05 08:08:59,857 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193445988] [2021-06-05 08:08:59,857 INFO L462 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-06-05 08:08:59,857 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:08:59,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-06-05 08:08:59,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=298, Invalid=1034, Unknown=0, NotChecked=0, Total=1332 [2021-06-05 08:08:59,857 INFO L87 Difference]: Start difference. First operand 6283 states and 17847 transitions. Second operand has 37 states, 37 states have (on average 5.054054054054054) internal successors, (187), 37 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:01,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:09:01,429 INFO L93 Difference]: Finished difference Result 7610 states and 20821 transitions. [2021-06-05 08:09:01,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-06-05 08:09:01,429 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 5.054054054054054) internal successors, (187), 37 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 185 [2021-06-05 08:09:01,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:09:01,437 INFO L225 Difference]: With dead ends: 7610 [2021-06-05 08:09:01,437 INFO L226 Difference]: Without dead ends: 7121 [2021-06-05 08:09:01,439 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3017 ImplicationChecksByTransitivity, 1542.4ms TimeCoverageRelationStatistics Valid=3052, Invalid=7454, Unknown=0, NotChecked=0, Total=10506 [2021-06-05 08:09:01,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7121 states. [2021-06-05 08:09:01,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7121 to 6228. [2021-06-05 08:09:01,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6228 states, 6227 states have (on average 2.8397302071623574) internal successors, (17683), 6227 states have internal predecessors, (17683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:01,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6228 states to 6228 states and 17683 transitions. [2021-06-05 08:09:01,510 INFO L78 Accepts]: Start accepts. Automaton has 6228 states and 17683 transitions. Word has length 185 [2021-06-05 08:09:01,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:09:01,510 INFO L482 AbstractCegarLoop]: Abstraction has 6228 states and 17683 transitions. [2021-06-05 08:09:01,510 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 5.054054054054054) internal successors, (187), 37 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:01,510 INFO L276 IsEmpty]: Start isEmpty. Operand 6228 states and 17683 transitions. [2021-06-05 08:09:01,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-06-05 08:09:01,515 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:09:01,515 INFO L521 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:09:01,716 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 494 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable498 [2021-06-05 08:09:01,716 INFO L430 AbstractCegarLoop]: === Iteration 500 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:09:01,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:09:01,716 INFO L82 PathProgramCache]: Analyzing trace with hash 658293267, now seen corresponding path program 491 times [2021-06-05 08:09:01,716 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:09:01,716 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378142905] [2021-06-05 08:09:01,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:09:01,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:09:02,154 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:09:02,154 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:09:02,154 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378142905] [2021-06-05 08:09:02,154 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378142905] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:09:02,154 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2002911864] [2021-06-05 08:09:02,155 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 495 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 495 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:09:02,230 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) [2021-06-05 08:09:02,230 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:09:02,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 39 conjunts are in the unsatisfiable core [2021-06-05 08:09:02,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:09:02,501 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:09:02,501 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2002911864] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:09:02,501 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:09:02,501 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 41 [2021-06-05 08:09:02,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694213699] [2021-06-05 08:09:02,502 INFO L462 AbstractCegarLoop]: Interpolant automaton has 41 states [2021-06-05 08:09:02,502 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:09:02,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-06-05 08:09:02,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=373, Invalid=1267, Unknown=0, NotChecked=0, Total=1640 [2021-06-05 08:09:02,502 INFO L87 Difference]: Start difference. First operand 6228 states and 17683 transitions. Second operand has 41 states, 41 states have (on average 5.365853658536586) internal successors, (220), 41 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:03,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:09:03,388 INFO L93 Difference]: Finished difference Result 7668 states and 20883 transitions. [2021-06-05 08:09:03,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-06-05 08:09:03,388 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 5.365853658536586) internal successors, (220), 41 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 190 [2021-06-05 08:09:03,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:09:03,397 INFO L225 Difference]: With dead ends: 7668 [2021-06-05 08:09:03,397 INFO L226 Difference]: Without dead ends: 7334 [2021-06-05 08:09:03,398 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1277 ImplicationChecksByTransitivity, 1063.5ms TimeCoverageRelationStatistics Valid=1716, Invalid=4446, Unknown=0, NotChecked=0, Total=6162 [2021-06-05 08:09:03,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7334 states. [2021-06-05 08:09:03,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7334 to 6313. [2021-06-05 08:09:03,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6313 states, 6312 states have (on average 2.828422053231939) internal successors, (17853), 6312 states have internal predecessors, (17853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:03,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6313 states to 6313 states and 17853 transitions. [2021-06-05 08:09:03,474 INFO L78 Accepts]: Start accepts. Automaton has 6313 states and 17853 transitions. Word has length 190 [2021-06-05 08:09:03,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:09:03,474 INFO L482 AbstractCegarLoop]: Abstraction has 6313 states and 17853 transitions. [2021-06-05 08:09:03,474 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 41 states, 41 states have (on average 5.365853658536586) internal successors, (220), 41 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:03,474 INFO L276 IsEmpty]: Start isEmpty. Operand 6313 states and 17853 transitions. [2021-06-05 08:09:03,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-06-05 08:09:03,481 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:09:03,481 INFO L521 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:09:03,697 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 495 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable499 [2021-06-05 08:09:03,697 INFO L430 AbstractCegarLoop]: === Iteration 501 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:09:03,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:09:03,697 INFO L82 PathProgramCache]: Analyzing trace with hash 2055723223, now seen corresponding path program 492 times [2021-06-05 08:09:03,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:09:03,697 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157045002] [2021-06-05 08:09:03,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:09:03,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:09:04,188 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:09:04,188 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:09:04,188 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157045002] [2021-06-05 08:09:04,188 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157045002] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:09:04,188 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [641868905] [2021-06-05 08:09:04,188 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 496 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 496 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:09:04,270 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 17 check-sat command(s) [2021-06-05 08:09:04,270 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:09:04,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 38 conjunts are in the unsatisfiable core [2021-06-05 08:09:04,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:09:04,508 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:09:04,508 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [641868905] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:09:04,508 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:09:04,508 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 38 [2021-06-05 08:09:04,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310022024] [2021-06-05 08:09:04,508 INFO L462 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-06-05 08:09:04,508 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:09:04,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-06-05 08:09:04,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=330, Invalid=1076, Unknown=0, NotChecked=0, Total=1406 [2021-06-05 08:09:04,509 INFO L87 Difference]: Start difference. First operand 6313 states and 17853 transitions. Second operand has 38 states, 38 states have (on average 5.052631578947368) internal successors, (192), 38 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:05,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:09:05,233 INFO L93 Difference]: Finished difference Result 9061 states and 23477 transitions. [2021-06-05 08:09:05,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-06-05 08:09:05,233 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 5.052631578947368) internal successors, (192), 38 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 190 [2021-06-05 08:09:05,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:09:05,242 INFO L225 Difference]: With dead ends: 9061 [2021-06-05 08:09:05,242 INFO L226 Difference]: Without dead ends: 8791 [2021-06-05 08:09:05,242 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 929 ImplicationChecksByTransitivity, 976.8ms TimeCoverageRelationStatistics Valid=1502, Invalid=3754, Unknown=0, NotChecked=0, Total=5256 [2021-06-05 08:09:05,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8791 states. [2021-06-05 08:09:05,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8791 to 6328. [2021-06-05 08:09:05,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6328 states, 6327 states have (on average 2.8264580369843526) internal successors, (17883), 6327 states have internal predecessors, (17883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:05,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6328 states to 6328 states and 17883 transitions. [2021-06-05 08:09:05,314 INFO L78 Accepts]: Start accepts. Automaton has 6328 states and 17883 transitions. Word has length 190 [2021-06-05 08:09:05,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:09:05,314 INFO L482 AbstractCegarLoop]: Abstraction has 6328 states and 17883 transitions. [2021-06-05 08:09:05,315 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 38 states, 38 states have (on average 5.052631578947368) internal successors, (192), 38 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:05,315 INFO L276 IsEmpty]: Start isEmpty. Operand 6328 states and 17883 transitions. [2021-06-05 08:09:05,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-06-05 08:09:05,319 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:09:05,319 INFO L521 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:09:05,520 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable500,496 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:09:05,520 INFO L430 AbstractCegarLoop]: === Iteration 502 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:09:05,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:09:05,520 INFO L82 PathProgramCache]: Analyzing trace with hash 1885117351, now seen corresponding path program 493 times [2021-06-05 08:09:05,520 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:09:05,520 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604001037] [2021-06-05 08:09:05,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:09:05,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:09:05,964 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:09:05,964 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:09:05,964 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604001037] [2021-06-05 08:09:05,964 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604001037] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:09:05,964 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1041744362] [2021-06-05 08:09:05,965 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 497 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 497 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:09:06,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:09:06,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 38 conjunts are in the unsatisfiable core [2021-06-05 08:09:06,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:09:06,284 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:09:06,285 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1041744362] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:09:06,285 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:09:06,285 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 39 [2021-06-05 08:09:06,285 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171340218] [2021-06-05 08:09:06,285 INFO L462 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-06-05 08:09:06,285 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:09:06,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-06-05 08:09:06,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=318, Invalid=1164, Unknown=0, NotChecked=0, Total=1482 [2021-06-05 08:09:06,286 INFO L87 Difference]: Start difference. First operand 6328 states and 17883 transitions. Second operand has 39 states, 39 states have (on average 4.9743589743589745) internal successors, (194), 39 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:07,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:09:07,086 INFO L93 Difference]: Finished difference Result 8946 states and 23247 transitions. [2021-06-05 08:09:07,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-06-05 08:09:07,086 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 4.9743589743589745) internal successors, (194), 39 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 190 [2021-06-05 08:09:07,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:09:07,095 INFO L225 Difference]: With dead ends: 8946 [2021-06-05 08:09:07,095 INFO L226 Difference]: Without dead ends: 8676 [2021-06-05 08:09:07,096 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1046 ImplicationChecksByTransitivity, 1027.6ms TimeCoverageRelationStatistics Valid=1595, Invalid=4257, Unknown=0, NotChecked=0, Total=5852 [2021-06-05 08:09:07,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8676 states. [2021-06-05 08:09:07,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8676 to 6328. [2021-06-05 08:09:07,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6328 states, 6327 states have (on average 2.8264580369843526) internal successors, (17883), 6327 states have internal predecessors, (17883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:07,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6328 states to 6328 states and 17883 transitions. [2021-06-05 08:09:07,169 INFO L78 Accepts]: Start accepts. Automaton has 6328 states and 17883 transitions. Word has length 190 [2021-06-05 08:09:07,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:09:07,169 INFO L482 AbstractCegarLoop]: Abstraction has 6328 states and 17883 transitions. [2021-06-05 08:09:07,169 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 39 states, 39 states have (on average 4.9743589743589745) internal successors, (194), 39 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:07,169 INFO L276 IsEmpty]: Start isEmpty. Operand 6328 states and 17883 transitions. [2021-06-05 08:09:07,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-06-05 08:09:07,174 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:09:07,174 INFO L521 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:09:07,374 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 497 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable501 [2021-06-05 08:09:07,375 INFO L430 AbstractCegarLoop]: === Iteration 503 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:09:07,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:09:07,375 INFO L82 PathProgramCache]: Analyzing trace with hash -1568357099, now seen corresponding path program 494 times [2021-06-05 08:09:07,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:09:07,375 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246157720] [2021-06-05 08:09:07,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:09:07,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:09:07,822 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:09:07,823 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:09:07,823 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246157720] [2021-06-05 08:09:07,823 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246157720] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:09:07,823 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1065513593] [2021-06-05 08:09:07,823 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 498 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 498 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:09:07,888 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 08:09:07,889 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:09:07,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 38 conjunts are in the unsatisfiable core [2021-06-05 08:09:07,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:09:08,125 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:09:08,125 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1065513593] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:09:08,125 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:09:08,125 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 38 [2021-06-05 08:09:08,125 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561611617] [2021-06-05 08:09:08,125 INFO L462 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-06-05 08:09:08,125 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:09:08,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-06-05 08:09:08,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=301, Invalid=1105, Unknown=0, NotChecked=0, Total=1406 [2021-06-05 08:09:08,126 INFO L87 Difference]: Start difference. First operand 6328 states and 17883 transitions. Second operand has 38 states, 38 states have (on average 5.052631578947368) internal successors, (192), 38 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:08,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:09:08,923 INFO L93 Difference]: Finished difference Result 8921 states and 23197 transitions. [2021-06-05 08:09:08,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-05 08:09:08,923 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 5.052631578947368) internal successors, (192), 38 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 190 [2021-06-05 08:09:08,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:09:08,933 INFO L225 Difference]: With dead ends: 8921 [2021-06-05 08:09:08,933 INFO L226 Difference]: Without dead ends: 8651 [2021-06-05 08:09:08,934 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1032 ImplicationChecksByTransitivity, 988.8ms TimeCoverageRelationStatistics Valid=1494, Invalid=4056, Unknown=0, NotChecked=0, Total=5550 [2021-06-05 08:09:08,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8651 states. [2021-06-05 08:09:08,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8651 to 6328. [2021-06-05 08:09:08,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6328 states, 6327 states have (on average 2.8264580369843526) internal successors, (17883), 6327 states have internal predecessors, (17883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:09,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6328 states to 6328 states and 17883 transitions. [2021-06-05 08:09:09,008 INFO L78 Accepts]: Start accepts. Automaton has 6328 states and 17883 transitions. Word has length 190 [2021-06-05 08:09:09,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:09:09,008 INFO L482 AbstractCegarLoop]: Abstraction has 6328 states and 17883 transitions. [2021-06-05 08:09:09,008 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 38 states, 38 states have (on average 5.052631578947368) internal successors, (192), 38 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:09,008 INFO L276 IsEmpty]: Start isEmpty. Operand 6328 states and 17883 transitions. [2021-06-05 08:09:09,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-06-05 08:09:09,012 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:09:09,013 INFO L521 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:09:09,213 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable502,498 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:09:09,213 INFO L430 AbstractCegarLoop]: === Iteration 504 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:09:09,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:09:09,213 INFO L82 PathProgramCache]: Analyzing trace with hash 1578617829, now seen corresponding path program 495 times [2021-06-05 08:09:09,213 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:09:09,213 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753677737] [2021-06-05 08:09:09,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:09:09,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:09:09,639 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:09:09,639 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:09:09,639 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753677737] [2021-06-05 08:09:09,639 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753677737] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:09:09,640 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1345336426] [2021-06-05 08:09:09,640 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 499 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 499 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:09:09,727 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) [2021-06-05 08:09:09,728 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:09:09,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 38 conjunts are in the unsatisfiable core [2021-06-05 08:09:09,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:09:09,982 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:09:09,982 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1345336426] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:09:09,982 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:09:09,982 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 39 [2021-06-05 08:09:09,982 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969945745] [2021-06-05 08:09:09,982 INFO L462 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-06-05 08:09:09,982 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:09:09,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-06-05 08:09:09,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=290, Invalid=1192, Unknown=0, NotChecked=0, Total=1482 [2021-06-05 08:09:09,983 INFO L87 Difference]: Start difference. First operand 6328 states and 17883 transitions. Second operand has 39 states, 39 states have (on average 4.9743589743589745) internal successors, (194), 39 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:10,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:09:10,871 INFO L93 Difference]: Finished difference Result 8871 states and 23097 transitions. [2021-06-05 08:09:10,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-06-05 08:09:10,872 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 4.9743589743589745) internal successors, (194), 39 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 190 [2021-06-05 08:09:10,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:09:10,880 INFO L225 Difference]: With dead ends: 8871 [2021-06-05 08:09:10,880 INFO L226 Difference]: Without dead ends: 8601 [2021-06-05 08:09:10,881 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1155 ImplicationChecksByTransitivity, 1082.0ms TimeCoverageRelationStatistics Valid=1595, Invalid=4567, Unknown=0, NotChecked=0, Total=6162 [2021-06-05 08:09:10,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8601 states. [2021-06-05 08:09:10,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8601 to 6328. [2021-06-05 08:09:10,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6328 states, 6327 states have (on average 2.8264580369843526) internal successors, (17883), 6327 states have internal predecessors, (17883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:10,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6328 states to 6328 states and 17883 transitions. [2021-06-05 08:09:10,955 INFO L78 Accepts]: Start accepts. Automaton has 6328 states and 17883 transitions. Word has length 190 [2021-06-05 08:09:10,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:09:10,955 INFO L482 AbstractCegarLoop]: Abstraction has 6328 states and 17883 transitions. [2021-06-05 08:09:10,955 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 39 states, 39 states have (on average 4.9743589743589745) internal successors, (194), 39 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:10,955 INFO L276 IsEmpty]: Start isEmpty. Operand 6328 states and 17883 transitions. [2021-06-05 08:09:10,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-06-05 08:09:10,960 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:09:10,960 INFO L521 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:09:11,160 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 499 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable503 [2021-06-05 08:09:11,161 INFO L430 AbstractCegarLoop]: === Iteration 505 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:09:11,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:09:11,161 INFO L82 PathProgramCache]: Analyzing trace with hash -286112045, now seen corresponding path program 496 times [2021-06-05 08:09:11,161 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:09:11,161 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307273369] [2021-06-05 08:09:11,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:09:11,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:09:11,561 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:09:11,562 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:09:11,562 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307273369] [2021-06-05 08:09:11,562 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307273369] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:09:11,562 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1614152207] [2021-06-05 08:09:11,562 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 500 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 500 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:09:11,629 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 08:09:11,629 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:09:11,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 38 conjunts are in the unsatisfiable core [2021-06-05 08:09:11,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:09:11,863 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:09:11,863 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1614152207] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:09:11,863 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:09:11,863 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 38 [2021-06-05 08:09:11,863 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991527519] [2021-06-05 08:09:11,863 INFO L462 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-06-05 08:09:11,863 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:09:11,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-06-05 08:09:11,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=1130, Unknown=0, NotChecked=0, Total=1406 [2021-06-05 08:09:11,864 INFO L87 Difference]: Start difference. First operand 6328 states and 17883 transitions. Second operand has 38 states, 38 states have (on average 5.052631578947368) internal successors, (192), 38 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:12,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:09:12,663 INFO L93 Difference]: Finished difference Result 8821 states and 22997 transitions. [2021-06-05 08:09:12,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-05 08:09:12,663 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 5.052631578947368) internal successors, (192), 38 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 190 [2021-06-05 08:09:12,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:09:12,672 INFO L225 Difference]: With dead ends: 8821 [2021-06-05 08:09:12,672 INFO L226 Difference]: Without dead ends: 8551 [2021-06-05 08:09:12,673 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1139 ImplicationChecksByTransitivity, 972.6ms TimeCoverageRelationStatistics Valid=1502, Invalid=4350, Unknown=0, NotChecked=0, Total=5852 [2021-06-05 08:09:12,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8551 states. [2021-06-05 08:09:12,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8551 to 6328. [2021-06-05 08:09:12,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6328 states, 6327 states have (on average 2.8264580369843526) internal successors, (17883), 6327 states have internal predecessors, (17883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:12,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6328 states to 6328 states and 17883 transitions. [2021-06-05 08:09:12,773 INFO L78 Accepts]: Start accepts. Automaton has 6328 states and 17883 transitions. Word has length 190 [2021-06-05 08:09:12,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:09:12,773 INFO L482 AbstractCegarLoop]: Abstraction has 6328 states and 17883 transitions. [2021-06-05 08:09:12,773 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 38 states, 38 states have (on average 5.052631578947368) internal successors, (192), 38 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:12,773 INFO L276 IsEmpty]: Start isEmpty. Operand 6328 states and 17883 transitions. [2021-06-05 08:09:12,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-06-05 08:09:12,778 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:09:12,778 INFO L521 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:09:12,978 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 500 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable504 [2021-06-05 08:09:12,978 INFO L430 AbstractCegarLoop]: === Iteration 506 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:09:12,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:09:12,979 INFO L82 PathProgramCache]: Analyzing trace with hash 411603363, now seen corresponding path program 497 times [2021-06-05 08:09:12,979 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:09:12,979 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28991421] [2021-06-05 08:09:12,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:09:12,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:09:13,395 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:09:13,395 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:09:13,395 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28991421] [2021-06-05 08:09:13,396 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28991421] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:09:13,396 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1047220175] [2021-06-05 08:09:13,396 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 501 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 501 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:09:13,466 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) [2021-06-05 08:09:13,467 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:09:13,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 38 conjunts are in the unsatisfiable core [2021-06-05 08:09:13,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:09:13,720 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:09:13,720 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1047220175] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:09:13,720 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:09:13,720 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 39 [2021-06-05 08:09:13,720 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470939293] [2021-06-05 08:09:13,720 INFO L462 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-06-05 08:09:13,720 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:09:13,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-06-05 08:09:13,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=266, Invalid=1216, Unknown=0, NotChecked=0, Total=1482 [2021-06-05 08:09:13,721 INFO L87 Difference]: Start difference. First operand 6328 states and 17883 transitions. Second operand has 39 states, 39 states have (on average 4.9743589743589745) internal successors, (194), 39 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:14,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:09:14,658 INFO L93 Difference]: Finished difference Result 8771 states and 22897 transitions. [2021-06-05 08:09:14,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-06-05 08:09:14,658 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 4.9743589743589745) internal successors, (194), 39 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 190 [2021-06-05 08:09:14,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:09:14,668 INFO L225 Difference]: With dead ends: 8771 [2021-06-05 08:09:14,668 INFO L226 Difference]: Without dead ends: 8501 [2021-06-05 08:09:14,669 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1269 ImplicationChecksByTransitivity, 1107.3ms TimeCoverageRelationStatistics Valid=1611, Invalid=4869, Unknown=0, NotChecked=0, Total=6480 [2021-06-05 08:09:14,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8501 states. [2021-06-05 08:09:14,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8501 to 6328. [2021-06-05 08:09:14,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6328 states, 6327 states have (on average 2.8264580369843526) internal successors, (17883), 6327 states have internal predecessors, (17883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:14,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6328 states to 6328 states and 17883 transitions. [2021-06-05 08:09:14,749 INFO L78 Accepts]: Start accepts. Automaton has 6328 states and 17883 transitions. Word has length 190 [2021-06-05 08:09:14,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:09:14,749 INFO L482 AbstractCegarLoop]: Abstraction has 6328 states and 17883 transitions. [2021-06-05 08:09:14,749 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 39 states, 39 states have (on average 4.9743589743589745) internal successors, (194), 39 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:14,749 INFO L276 IsEmpty]: Start isEmpty. Operand 6328 states and 17883 transitions. [2021-06-05 08:09:14,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-06-05 08:09:14,754 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:09:14,754 INFO L521 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:09:14,955 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable505,501 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:09:14,955 INFO L430 AbstractCegarLoop]: === Iteration 507 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:09:14,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:09:14,955 INFO L82 PathProgramCache]: Analyzing trace with hash -1308279279, now seen corresponding path program 498 times [2021-06-05 08:09:14,955 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:09:14,955 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542787195] [2021-06-05 08:09:14,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:09:14,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:09:15,346 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:09:15,346 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:09:15,346 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542787195] [2021-06-05 08:09:15,347 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542787195] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:09:15,347 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [266806165] [2021-06-05 08:09:15,347 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 502 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 502 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:09:15,429 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 17 check-sat command(s) [2021-06-05 08:09:15,429 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:09:15,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 38 conjunts are in the unsatisfiable core [2021-06-05 08:09:15,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:09:15,699 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:09:15,699 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [266806165] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:09:15,699 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:09:15,699 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 38 [2021-06-05 08:09:15,699 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204224827] [2021-06-05 08:09:15,699 INFO L462 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-06-05 08:09:15,699 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:09:15,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-06-05 08:09:15,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=1151, Unknown=0, NotChecked=0, Total=1406 [2021-06-05 08:09:15,700 INFO L87 Difference]: Start difference. First operand 6328 states and 17883 transitions. Second operand has 38 states, 38 states have (on average 5.052631578947368) internal successors, (192), 38 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:16,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:09:16,559 INFO L93 Difference]: Finished difference Result 8721 states and 22797 transitions. [2021-06-05 08:09:16,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-06-05 08:09:16,559 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 5.052631578947368) internal successors, (192), 38 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 190 [2021-06-05 08:09:16,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:09:16,568 INFO L225 Difference]: With dead ends: 8721 [2021-06-05 08:09:16,568 INFO L226 Difference]: Without dead ends: 8451 [2021-06-05 08:09:16,569 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1250 ImplicationChecksByTransitivity, 1000.3ms TimeCoverageRelationStatistics Valid=1526, Invalid=4636, Unknown=0, NotChecked=0, Total=6162 [2021-06-05 08:09:16,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8451 states. [2021-06-05 08:09:16,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8451 to 6328. [2021-06-05 08:09:16,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6328 states, 6327 states have (on average 2.8264580369843526) internal successors, (17883), 6327 states have internal predecessors, (17883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:16,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6328 states to 6328 states and 17883 transitions. [2021-06-05 08:09:16,643 INFO L78 Accepts]: Start accepts. Automaton has 6328 states and 17883 transitions. Word has length 190 [2021-06-05 08:09:16,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:09:16,643 INFO L482 AbstractCegarLoop]: Abstraction has 6328 states and 17883 transitions. [2021-06-05 08:09:16,643 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 38 states, 38 states have (on average 5.052631578947368) internal successors, (192), 38 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:16,643 INFO L276 IsEmpty]: Start isEmpty. Operand 6328 states and 17883 transitions. [2021-06-05 08:09:16,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-06-05 08:09:16,647 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:09:16,647 INFO L521 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:09:16,848 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 502 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable506 [2021-06-05 08:09:16,848 INFO L430 AbstractCegarLoop]: === Iteration 508 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:09:16,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:09:16,848 INFO L82 PathProgramCache]: Analyzing trace with hash -1809593119, now seen corresponding path program 499 times [2021-06-05 08:09:16,848 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:09:16,848 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205128490] [2021-06-05 08:09:16,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:09:16,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:09:17,249 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:09:17,250 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:09:17,250 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205128490] [2021-06-05 08:09:17,250 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205128490] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:09:17,250 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [87382052] [2021-06-05 08:09:17,250 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 503 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 503 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:09:17,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:09:17,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 38 conjunts are in the unsatisfiable core [2021-06-05 08:09:17,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:09:17,569 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:09:17,569 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [87382052] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:09:17,569 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:09:17,569 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 39 [2021-06-05 08:09:17,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606575217] [2021-06-05 08:09:17,569 INFO L462 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-06-05 08:09:17,569 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:09:17,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-06-05 08:09:17,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=246, Invalid=1236, Unknown=0, NotChecked=0, Total=1482 [2021-06-05 08:09:17,570 INFO L87 Difference]: Start difference. First operand 6328 states and 17883 transitions. Second operand has 39 states, 39 states have (on average 4.9743589743589745) internal successors, (194), 39 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:18,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:09:18,607 INFO L93 Difference]: Finished difference Result 8671 states and 22697 transitions. [2021-06-05 08:09:18,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-06-05 08:09:18,607 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 4.9743589743589745) internal successors, (194), 39 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 190 [2021-06-05 08:09:18,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:09:18,616 INFO L225 Difference]: With dead ends: 8671 [2021-06-05 08:09:18,616 INFO L226 Difference]: Without dead ends: 8401 [2021-06-05 08:09:18,616 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1387 ImplicationChecksByTransitivity, 1184.1ms TimeCoverageRelationStatistics Valid=1643, Invalid=5163, Unknown=0, NotChecked=0, Total=6806 [2021-06-05 08:09:18,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8401 states. [2021-06-05 08:09:18,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8401 to 6328. [2021-06-05 08:09:18,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6328 states, 6327 states have (on average 2.8264580369843526) internal successors, (17883), 6327 states have internal predecessors, (17883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:18,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6328 states to 6328 states and 17883 transitions. [2021-06-05 08:09:18,687 INFO L78 Accepts]: Start accepts. Automaton has 6328 states and 17883 transitions. Word has length 190 [2021-06-05 08:09:18,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:09:18,687 INFO L482 AbstractCegarLoop]: Abstraction has 6328 states and 17883 transitions. [2021-06-05 08:09:18,687 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 39 states, 39 states have (on average 4.9743589743589745) internal successors, (194), 39 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:18,687 INFO L276 IsEmpty]: Start isEmpty. Operand 6328 states and 17883 transitions. [2021-06-05 08:09:18,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-06-05 08:09:18,692 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:09:18,692 INFO L521 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:09:18,892 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 503 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable507 [2021-06-05 08:09:18,892 INFO L430 AbstractCegarLoop]: === Iteration 509 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:09:18,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:09:18,893 INFO L82 PathProgramCache]: Analyzing trace with hash -1333097777, now seen corresponding path program 500 times [2021-06-05 08:09:18,893 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:09:18,893 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470117002] [2021-06-05 08:09:18,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:09:18,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:09:19,271 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:09:19,271 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:09:19,271 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470117002] [2021-06-05 08:09:19,271 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470117002] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:09:19,272 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1379469002] [2021-06-05 08:09:19,272 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 504 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 504 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:09:19,339 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 08:09:19,340 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:09:19,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 38 conjunts are in the unsatisfiable core [2021-06-05 08:09:19,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:09:19,570 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:09:19,570 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1379469002] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:09:19,570 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:09:19,570 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 38 [2021-06-05 08:09:19,570 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062220744] [2021-06-05 08:09:19,571 INFO L462 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-06-05 08:09:19,571 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:09:19,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-06-05 08:09:19,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=238, Invalid=1168, Unknown=0, NotChecked=0, Total=1406 [2021-06-05 08:09:19,571 INFO L87 Difference]: Start difference. First operand 6328 states and 17883 transitions. Second operand has 38 states, 38 states have (on average 5.052631578947368) internal successors, (192), 38 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:20,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:09:20,466 INFO L93 Difference]: Finished difference Result 8621 states and 22597 transitions. [2021-06-05 08:09:20,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-06-05 08:09:20,466 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 5.052631578947368) internal successors, (192), 38 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 190 [2021-06-05 08:09:20,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:09:20,475 INFO L225 Difference]: With dead ends: 8621 [2021-06-05 08:09:20,475 INFO L226 Difference]: Without dead ends: 8351 [2021-06-05 08:09:20,476 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1365 ImplicationChecksByTransitivity, 1024.1ms TimeCoverageRelationStatistics Valid=1566, Invalid=4914, Unknown=0, NotChecked=0, Total=6480 [2021-06-05 08:09:20,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8351 states. [2021-06-05 08:09:20,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8351 to 6328. [2021-06-05 08:09:20,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6328 states, 6327 states have (on average 2.8264580369843526) internal successors, (17883), 6327 states have internal predecessors, (17883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:20,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6328 states to 6328 states and 17883 transitions. [2021-06-05 08:09:20,551 INFO L78 Accepts]: Start accepts. Automaton has 6328 states and 17883 transitions. Word has length 190 [2021-06-05 08:09:20,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:09:20,551 INFO L482 AbstractCegarLoop]: Abstraction has 6328 states and 17883 transitions. [2021-06-05 08:09:20,551 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 38 states, 38 states have (on average 5.052631578947368) internal successors, (192), 38 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:20,552 INFO L276 IsEmpty]: Start isEmpty. Operand 6328 states and 17883 transitions. [2021-06-05 08:09:20,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-06-05 08:09:20,556 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:09:20,556 INFO L521 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:09:20,757 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable508,504 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:09:20,757 INFO L430 AbstractCegarLoop]: === Iteration 510 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:09:20,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:09:20,757 INFO L82 PathProgramCache]: Analyzing trace with hash 133586335, now seen corresponding path program 501 times [2021-06-05 08:09:20,757 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:09:20,757 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780044277] [2021-06-05 08:09:20,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:09:20,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:09:21,186 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:09:21,186 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:09:21,186 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780044277] [2021-06-05 08:09:21,186 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780044277] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:09:21,186 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [863688378] [2021-06-05 08:09:21,186 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 505 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 505 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:09:21,268 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) [2021-06-05 08:09:21,269 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:09:21,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 38 conjunts are in the unsatisfiable core [2021-06-05 08:09:21,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:09:21,517 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:09:21,518 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [863688378] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:09:21,518 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:09:21,518 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 39 [2021-06-05 08:09:21,518 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237855315] [2021-06-05 08:09:21,518 INFO L462 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-06-05 08:09:21,518 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:09:21,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-06-05 08:09:21,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=1252, Unknown=0, NotChecked=0, Total=1482 [2021-06-05 08:09:21,518 INFO L87 Difference]: Start difference. First operand 6328 states and 17883 transitions. Second operand has 39 states, 39 states have (on average 4.9743589743589745) internal successors, (194), 39 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:22,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:09:22,568 INFO L93 Difference]: Finished difference Result 8571 states and 22497 transitions. [2021-06-05 08:09:22,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-06-05 08:09:22,568 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 4.9743589743589745) internal successors, (194), 39 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 190 [2021-06-05 08:09:22,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:09:22,576 INFO L225 Difference]: With dead ends: 8571 [2021-06-05 08:09:22,577 INFO L226 Difference]: Without dead ends: 8301 [2021-06-05 08:09:22,577 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1509 ImplicationChecksByTransitivity, 1216.6ms TimeCoverageRelationStatistics Valid=1691, Invalid=5449, Unknown=0, NotChecked=0, Total=7140 [2021-06-05 08:09:22,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8301 states. [2021-06-05 08:09:22,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8301 to 6328. [2021-06-05 08:09:22,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6328 states, 6327 states have (on average 2.8264580369843526) internal successors, (17883), 6327 states have internal predecessors, (17883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:22,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6328 states to 6328 states and 17883 transitions. [2021-06-05 08:09:22,651 INFO L78 Accepts]: Start accepts. Automaton has 6328 states and 17883 transitions. Word has length 190 [2021-06-05 08:09:22,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:09:22,651 INFO L482 AbstractCegarLoop]: Abstraction has 6328 states and 17883 transitions. [2021-06-05 08:09:22,651 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 39 states, 39 states have (on average 4.9743589743589745) internal successors, (194), 39 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:22,651 INFO L276 IsEmpty]: Start isEmpty. Operand 6328 states and 17883 transitions. [2021-06-05 08:09:22,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-06-05 08:09:22,656 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:09:22,656 INFO L521 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:09:22,856 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable509,505 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:09:22,857 INFO L430 AbstractCegarLoop]: === Iteration 511 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:09:22,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:09:22,857 INFO L82 PathProgramCache]: Analyzing trace with hash -1635059, now seen corresponding path program 502 times [2021-06-05 08:09:22,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:09:22,857 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136973199] [2021-06-05 08:09:22,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:09:22,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:09:23,228 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:09:23,228 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:09:23,228 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136973199] [2021-06-05 08:09:23,229 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136973199] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:09:23,229 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1087020224] [2021-06-05 08:09:23,229 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 506 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 506 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:09:23,295 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 08:09:23,295 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:09:23,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 38 conjunts are in the unsatisfiable core [2021-06-05 08:09:23,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:09:23,522 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:09:23,523 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1087020224] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:09:23,523 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:09:23,523 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 38 [2021-06-05 08:09:23,523 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456324767] [2021-06-05 08:09:23,523 INFO L462 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-06-05 08:09:23,523 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:09:23,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-06-05 08:09:23,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=225, Invalid=1181, Unknown=0, NotChecked=0, Total=1406 [2021-06-05 08:09:23,523 INFO L87 Difference]: Start difference. First operand 6328 states and 17883 transitions. Second operand has 38 states, 38 states have (on average 5.052631578947368) internal successors, (192), 38 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:24,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:09:24,500 INFO L93 Difference]: Finished difference Result 8521 states and 22397 transitions. [2021-06-05 08:09:24,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-06-05 08:09:24,501 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 5.052631578947368) internal successors, (192), 38 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 190 [2021-06-05 08:09:24,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:09:24,509 INFO L225 Difference]: With dead ends: 8521 [2021-06-05 08:09:24,509 INFO L226 Difference]: Without dead ends: 8251 [2021-06-05 08:09:24,510 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1484 ImplicationChecksByTransitivity, 1046.9ms TimeCoverageRelationStatistics Valid=1622, Invalid=5184, Unknown=0, NotChecked=0, Total=6806 [2021-06-05 08:09:24,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8251 states. [2021-06-05 08:09:24,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8251 to 6328. [2021-06-05 08:09:24,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6328 states, 6327 states have (on average 2.8264580369843526) internal successors, (17883), 6327 states have internal predecessors, (17883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:24,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6328 states to 6328 states and 17883 transitions. [2021-06-05 08:09:24,580 INFO L78 Accepts]: Start accepts. Automaton has 6328 states and 17883 transitions. Word has length 190 [2021-06-05 08:09:24,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:09:24,581 INFO L482 AbstractCegarLoop]: Abstraction has 6328 states and 17883 transitions. [2021-06-05 08:09:24,581 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 38 states, 38 states have (on average 5.052631578947368) internal successors, (192), 38 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:24,581 INFO L276 IsEmpty]: Start isEmpty. Operand 6328 states and 17883 transitions. [2021-06-05 08:09:24,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-06-05 08:09:24,586 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:09:24,586 INFO L521 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:09:24,786 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 506 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable510 [2021-06-05 08:09:24,786 INFO L430 AbstractCegarLoop]: === Iteration 512 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:09:24,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:09:24,787 INFO L82 PathProgramCache]: Analyzing trace with hash -878369827, now seen corresponding path program 503 times [2021-06-05 08:09:24,787 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:09:24,787 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647062652] [2021-06-05 08:09:24,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:09:24,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:09:25,165 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:09:25,165 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:09:25,165 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647062652] [2021-06-05 08:09:25,165 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647062652] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:09:25,165 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2029442023] [2021-06-05 08:09:25,165 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 507 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 507 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:09:25,236 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) [2021-06-05 08:09:25,236 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:09:25,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 38 conjunts are in the unsatisfiable core [2021-06-05 08:09:25,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:09:25,481 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:09:25,482 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2029442023] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:09:25,482 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:09:25,482 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 39 [2021-06-05 08:09:25,482 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672221868] [2021-06-05 08:09:25,482 INFO L462 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-06-05 08:09:25,482 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:09:25,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-06-05 08:09:25,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=1264, Unknown=0, NotChecked=0, Total=1482 [2021-06-05 08:09:25,486 INFO L87 Difference]: Start difference. First operand 6328 states and 17883 transitions. Second operand has 39 states, 39 states have (on average 4.9743589743589745) internal successors, (194), 39 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:26,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:09:26,680 INFO L93 Difference]: Finished difference Result 8471 states and 22297 transitions. [2021-06-05 08:09:26,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-06-05 08:09:26,680 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 4.9743589743589745) internal successors, (194), 39 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 190 [2021-06-05 08:09:26,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:09:26,687 INFO L225 Difference]: With dead ends: 8471 [2021-06-05 08:09:26,687 INFO L226 Difference]: Without dead ends: 8201 [2021-06-05 08:09:26,688 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1635 ImplicationChecksByTransitivity, 1244.2ms TimeCoverageRelationStatistics Valid=1755, Invalid=5727, Unknown=0, NotChecked=0, Total=7482 [2021-06-05 08:09:26,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8201 states. [2021-06-05 08:09:26,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8201 to 6328. [2021-06-05 08:09:26,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6328 states, 6327 states have (on average 2.8264580369843526) internal successors, (17883), 6327 states have internal predecessors, (17883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:26,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6328 states to 6328 states and 17883 transitions. [2021-06-05 08:09:26,754 INFO L78 Accepts]: Start accepts. Automaton has 6328 states and 17883 transitions. Word has length 190 [2021-06-05 08:09:26,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:09:26,754 INFO L482 AbstractCegarLoop]: Abstraction has 6328 states and 17883 transitions. [2021-06-05 08:09:26,754 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 39 states, 39 states have (on average 4.9743589743589745) internal successors, (194), 39 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:26,754 INFO L276 IsEmpty]: Start isEmpty. Operand 6328 states and 17883 transitions. [2021-06-05 08:09:26,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-06-05 08:09:26,759 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:09:26,759 INFO L521 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:09:26,959 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 507 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable511 [2021-06-05 08:09:26,959 INFO L430 AbstractCegarLoop]: === Iteration 513 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:09:26,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:09:26,960 INFO L82 PathProgramCache]: Analyzing trace with hash 1679271115, now seen corresponding path program 504 times [2021-06-05 08:09:26,960 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:09:26,960 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831786416] [2021-06-05 08:09:26,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:09:26,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:09:27,328 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:09:27,328 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:09:27,328 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831786416] [2021-06-05 08:09:27,328 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831786416] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:09:27,328 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1500394968] [2021-06-05 08:09:27,328 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 508 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 508 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:09:27,409 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 17 check-sat command(s) [2021-06-05 08:09:27,410 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:09:27,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 38 conjunts are in the unsatisfiable core [2021-06-05 08:09:27,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:09:27,635 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:09:27,635 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1500394968] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:09:27,635 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:09:27,635 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 38 [2021-06-05 08:09:27,635 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376002605] [2021-06-05 08:09:27,636 INFO L462 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-06-05 08:09:27,636 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:09:27,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-06-05 08:09:27,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=216, Invalid=1190, Unknown=0, NotChecked=0, Total=1406 [2021-06-05 08:09:27,636 INFO L87 Difference]: Start difference. First operand 6328 states and 17883 transitions. Second operand has 38 states, 38 states have (on average 5.052631578947368) internal successors, (192), 38 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:28,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:09:28,699 INFO L93 Difference]: Finished difference Result 8421 states and 22197 transitions. [2021-06-05 08:09:28,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-06-05 08:09:28,699 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 5.052631578947368) internal successors, (192), 38 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 190 [2021-06-05 08:09:28,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:09:28,708 INFO L225 Difference]: With dead ends: 8421 [2021-06-05 08:09:28,708 INFO L226 Difference]: Without dead ends: 8151 [2021-06-05 08:09:28,709 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1607 ImplicationChecksByTransitivity, 1083.9ms TimeCoverageRelationStatistics Valid=1694, Invalid=5446, Unknown=0, NotChecked=0, Total=7140 [2021-06-05 08:09:28,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8151 states. [2021-06-05 08:09:28,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8151 to 6328. [2021-06-05 08:09:28,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6328 states, 6327 states have (on average 2.8264580369843526) internal successors, (17883), 6327 states have internal predecessors, (17883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:28,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6328 states to 6328 states and 17883 transitions. [2021-06-05 08:09:28,786 INFO L78 Accepts]: Start accepts. Automaton has 6328 states and 17883 transitions. Word has length 190 [2021-06-05 08:09:28,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:09:28,786 INFO L482 AbstractCegarLoop]: Abstraction has 6328 states and 17883 transitions. [2021-06-05 08:09:28,786 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 38 states, 38 states have (on average 5.052631578947368) internal successors, (192), 38 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:28,786 INFO L276 IsEmpty]: Start isEmpty. Operand 6328 states and 17883 transitions. [2021-06-05 08:09:28,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-06-05 08:09:28,791 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:09:28,791 INFO L521 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:09:28,991 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable512,508 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:09:28,991 INFO L430 AbstractCegarLoop]: === Iteration 514 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:09:28,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:09:28,992 INFO L82 PathProgramCache]: Analyzing trace with hash -1251147877, now seen corresponding path program 505 times [2021-06-05 08:09:28,992 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:09:28,992 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296404252] [2021-06-05 08:09:28,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:09:29,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:09:29,405 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:09:29,405 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:09:29,405 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296404252] [2021-06-05 08:09:29,406 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296404252] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:09:29,406 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1121345778] [2021-06-05 08:09:29,406 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 509 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 509 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:09:29,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:09:29,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 38 conjunts are in the unsatisfiable core [2021-06-05 08:09:29,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:09:29,715 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:09:29,715 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1121345778] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:09:29,715 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:09:29,716 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 39 [2021-06-05 08:09:29,716 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267884058] [2021-06-05 08:09:29,716 INFO L462 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-06-05 08:09:29,716 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:09:29,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-06-05 08:09:29,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=1272, Unknown=0, NotChecked=0, Total=1482 [2021-06-05 08:09:29,716 INFO L87 Difference]: Start difference. First operand 6328 states and 17883 transitions. Second operand has 39 states, 39 states have (on average 4.9743589743589745) internal successors, (194), 39 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:30,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:09:30,902 INFO L93 Difference]: Finished difference Result 8371 states and 22097 transitions. [2021-06-05 08:09:30,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-06-05 08:09:30,902 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 4.9743589743589745) internal successors, (194), 39 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 190 [2021-06-05 08:09:30,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:09:30,910 INFO L225 Difference]: With dead ends: 8371 [2021-06-05 08:09:30,910 INFO L226 Difference]: Without dead ends: 8101 [2021-06-05 08:09:30,911 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1765 ImplicationChecksByTransitivity, 1309.0ms TimeCoverageRelationStatistics Valid=1835, Invalid=5997, Unknown=0, NotChecked=0, Total=7832 [2021-06-05 08:09:30,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8101 states. [2021-06-05 08:09:30,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8101 to 6328. [2021-06-05 08:09:30,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6328 states, 6327 states have (on average 2.8264580369843526) internal successors, (17883), 6327 states have internal predecessors, (17883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:30,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6328 states to 6328 states and 17883 transitions. [2021-06-05 08:09:30,977 INFO L78 Accepts]: Start accepts. Automaton has 6328 states and 17883 transitions. Word has length 190 [2021-06-05 08:09:30,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:09:30,978 INFO L482 AbstractCegarLoop]: Abstraction has 6328 states and 17883 transitions. [2021-06-05 08:09:30,978 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 39 states, 39 states have (on average 4.9743589743589745) internal successors, (194), 39 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:30,978 INFO L276 IsEmpty]: Start isEmpty. Operand 6328 states and 17883 transitions. [2021-06-05 08:09:30,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-06-05 08:09:30,982 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:09:30,982 INFO L521 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:09:31,182 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 509 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable513 [2021-06-05 08:09:31,183 INFO L430 AbstractCegarLoop]: === Iteration 515 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:09:31,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:09:31,183 INFO L82 PathProgramCache]: Analyzing trace with hash 766587401, now seen corresponding path program 506 times [2021-06-05 08:09:31,183 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:09:31,183 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328108888] [2021-06-05 08:09:31,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:09:31,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:09:31,542 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:09:31,542 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:09:31,542 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328108888] [2021-06-05 08:09:31,542 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328108888] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:09:31,542 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [755380559] [2021-06-05 08:09:31,542 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 510 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 510 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:09:31,609 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 08:09:31,609 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:09:31,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 38 conjunts are in the unsatisfiable core [2021-06-05 08:09:31,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:09:31,832 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:09:31,832 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [755380559] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:09:31,832 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:09:31,832 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 38 [2021-06-05 08:09:31,832 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687108675] [2021-06-05 08:09:31,833 INFO L462 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-06-05 08:09:31,833 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:09:31,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-06-05 08:09:31,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=1195, Unknown=0, NotChecked=0, Total=1406 [2021-06-05 08:09:31,833 INFO L87 Difference]: Start difference. First operand 6328 states and 17883 transitions. Second operand has 38 states, 38 states have (on average 5.052631578947368) internal successors, (192), 38 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:32,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:09:32,930 INFO L93 Difference]: Finished difference Result 8321 states and 21997 transitions. [2021-06-05 08:09:32,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-06-05 08:09:32,931 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 5.052631578947368) internal successors, (192), 38 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 190 [2021-06-05 08:09:32,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:09:32,939 INFO L225 Difference]: With dead ends: 8321 [2021-06-05 08:09:32,939 INFO L226 Difference]: Without dead ends: 8051 [2021-06-05 08:09:32,939 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1734 ImplicationChecksByTransitivity, 1105.7ms TimeCoverageRelationStatistics Valid=1782, Invalid=5700, Unknown=0, NotChecked=0, Total=7482 [2021-06-05 08:09:32,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8051 states. [2021-06-05 08:09:32,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8051 to 6328. [2021-06-05 08:09:33,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6328 states, 6327 states have (on average 2.8264580369843526) internal successors, (17883), 6327 states have internal predecessors, (17883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:33,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6328 states to 6328 states and 17883 transitions. [2021-06-05 08:09:33,009 INFO L78 Accepts]: Start accepts. Automaton has 6328 states and 17883 transitions. Word has length 190 [2021-06-05 08:09:33,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:09:33,009 INFO L482 AbstractCegarLoop]: Abstraction has 6328 states and 17883 transitions. [2021-06-05 08:09:33,009 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 38 states, 38 states have (on average 5.052631578947368) internal successors, (192), 38 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:33,009 INFO L276 IsEmpty]: Start isEmpty. Operand 6328 states and 17883 transitions. [2021-06-05 08:09:33,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-06-05 08:09:33,014 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:09:33,014 INFO L521 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:09:33,214 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 510 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable514 [2021-06-05 08:09:33,214 INFO L430 AbstractCegarLoop]: === Iteration 516 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:09:33,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:09:33,214 INFO L82 PathProgramCache]: Analyzing trace with hash -131936039, now seen corresponding path program 507 times [2021-06-05 08:09:33,215 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:09:33,215 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126086920] [2021-06-05 08:09:33,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:09:33,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:09:33,584 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:09:33,585 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:09:33,585 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126086920] [2021-06-05 08:09:33,585 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126086920] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:09:33,585 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [455177707] [2021-06-05 08:09:33,585 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 511 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 511 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:09:33,671 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) [2021-06-05 08:09:33,671 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:09:33,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 38 conjunts are in the unsatisfiable core [2021-06-05 08:09:33,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:09:33,912 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:09:33,912 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [455177707] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:09:33,913 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:09:33,913 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 39 [2021-06-05 08:09:33,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608787819] [2021-06-05 08:09:33,913 INFO L462 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-06-05 08:09:33,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:09:33,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-06-05 08:09:33,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=1276, Unknown=0, NotChecked=0, Total=1482 [2021-06-05 08:09:33,913 INFO L87 Difference]: Start difference. First operand 6328 states and 17883 transitions. Second operand has 39 states, 39 states have (on average 4.9743589743589745) internal successors, (194), 39 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:35,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:09:35,197 INFO L93 Difference]: Finished difference Result 8271 states and 21897 transitions. [2021-06-05 08:09:35,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-06-05 08:09:35,197 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 4.9743589743589745) internal successors, (194), 39 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 190 [2021-06-05 08:09:35,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:09:35,205 INFO L225 Difference]: With dead ends: 8271 [2021-06-05 08:09:35,205 INFO L226 Difference]: Without dead ends: 8001 [2021-06-05 08:09:35,205 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1899 ImplicationChecksByTransitivity, 1328.6ms TimeCoverageRelationStatistics Valid=1931, Invalid=6259, Unknown=0, NotChecked=0, Total=8190 [2021-06-05 08:09:35,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8001 states. [2021-06-05 08:09:35,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8001 to 6328. [2021-06-05 08:09:35,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6328 states, 6327 states have (on average 2.8264580369843526) internal successors, (17883), 6327 states have internal predecessors, (17883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:35,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6328 states to 6328 states and 17883 transitions. [2021-06-05 08:09:35,279 INFO L78 Accepts]: Start accepts. Automaton has 6328 states and 17883 transitions. Word has length 190 [2021-06-05 08:09:35,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:09:35,279 INFO L482 AbstractCegarLoop]: Abstraction has 6328 states and 17883 transitions. [2021-06-05 08:09:35,279 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 39 states, 39 states have (on average 4.9743589743589745) internal successors, (194), 39 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:35,279 INFO L276 IsEmpty]: Start isEmpty. Operand 6328 states and 17883 transitions. [2021-06-05 08:09:35,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-06-05 08:09:35,284 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:09:35,284 INFO L521 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:09:35,484 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable515,511 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:09:35,484 INFO L430 AbstractCegarLoop]: === Iteration 517 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:09:35,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:09:35,485 INFO L82 PathProgramCache]: Analyzing trace with hash -1746889529, now seen corresponding path program 508 times [2021-06-05 08:09:35,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:09:35,485 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929221092] [2021-06-05 08:09:35,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:09:35,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:09:35,840 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:09:35,841 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:09:35,841 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929221092] [2021-06-05 08:09:35,841 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929221092] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:09:35,841 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [744008731] [2021-06-05 08:09:35,841 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 512 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 512 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:09:35,907 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 08:09:35,908 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:09:35,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 38 conjunts are in the unsatisfiable core [2021-06-05 08:09:35,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:09:36,131 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:09:36,131 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [744008731] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:09:36,131 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:09:36,131 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 38 [2021-06-05 08:09:36,131 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734016118] [2021-06-05 08:09:36,131 INFO L462 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-06-05 08:09:36,131 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:09:36,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-06-05 08:09:36,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=1196, Unknown=0, NotChecked=0, Total=1406 [2021-06-05 08:09:36,132 INFO L87 Difference]: Start difference. First operand 6328 states and 17883 transitions. Second operand has 38 states, 38 states have (on average 5.052631578947368) internal successors, (192), 38 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:37,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:09:37,227 INFO L93 Difference]: Finished difference Result 8221 states and 21797 transitions. [2021-06-05 08:09:37,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-06-05 08:09:37,228 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 5.052631578947368) internal successors, (192), 38 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 190 [2021-06-05 08:09:37,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:09:37,237 INFO L225 Difference]: With dead ends: 8221 [2021-06-05 08:09:37,237 INFO L226 Difference]: Without dead ends: 7951 [2021-06-05 08:09:37,238 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1865 ImplicationChecksByTransitivity, 1147.7ms TimeCoverageRelationStatistics Valid=1886, Invalid=5946, Unknown=0, NotChecked=0, Total=7832 [2021-06-05 08:09:37,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7951 states. [2021-06-05 08:09:37,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7951 to 6328. [2021-06-05 08:09:37,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6328 states, 6327 states have (on average 2.8264580369843526) internal successors, (17883), 6327 states have internal predecessors, (17883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:37,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6328 states to 6328 states and 17883 transitions. [2021-06-05 08:09:37,317 INFO L78 Accepts]: Start accepts. Automaton has 6328 states and 17883 transitions. Word has length 190 [2021-06-05 08:09:37,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:09:37,317 INFO L482 AbstractCegarLoop]: Abstraction has 6328 states and 17883 transitions. [2021-06-05 08:09:37,317 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 38 states, 38 states have (on average 5.052631578947368) internal successors, (192), 38 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:37,317 INFO L276 IsEmpty]: Start isEmpty. Operand 6328 states and 17883 transitions. [2021-06-05 08:09:37,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-06-05 08:09:37,322 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:09:37,322 INFO L521 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:09:37,523 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 512 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable516 [2021-06-05 08:09:37,523 INFO L430 AbstractCegarLoop]: === Iteration 518 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:09:37,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:09:37,523 INFO L82 PathProgramCache]: Analyzing trace with hash -2127333481, now seen corresponding path program 509 times [2021-06-05 08:09:37,523 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:09:37,523 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546033364] [2021-06-05 08:09:37,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:09:37,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:09:37,922 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:09:37,922 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:09:37,922 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546033364] [2021-06-05 08:09:37,922 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546033364] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:09:37,922 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1292529920] [2021-06-05 08:09:37,922 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 513 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 513 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:09:37,992 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) [2021-06-05 08:09:37,992 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:09:37,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 38 conjunts are in the unsatisfiable core [2021-06-05 08:09:37,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:09:38,232 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:09:38,233 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1292529920] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:09:38,233 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:09:38,233 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 39 [2021-06-05 08:09:38,233 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833911789] [2021-06-05 08:09:38,233 INFO L462 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-06-05 08:09:38,233 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:09:38,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-06-05 08:09:38,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=1276, Unknown=0, NotChecked=0, Total=1482 [2021-06-05 08:09:38,233 INFO L87 Difference]: Start difference. First operand 6328 states and 17883 transitions. Second operand has 39 states, 39 states have (on average 4.9743589743589745) internal successors, (194), 39 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:39,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:09:39,563 INFO L93 Difference]: Finished difference Result 8171 states and 21697 transitions. [2021-06-05 08:09:39,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-06-05 08:09:39,564 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 4.9743589743589745) internal successors, (194), 39 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 190 [2021-06-05 08:09:39,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:09:39,572 INFO L225 Difference]: With dead ends: 8171 [2021-06-05 08:09:39,572 INFO L226 Difference]: Without dead ends: 7901 [2021-06-05 08:09:39,573 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2037 ImplicationChecksByTransitivity, 1352.0ms TimeCoverageRelationStatistics Valid=2043, Invalid=6513, Unknown=0, NotChecked=0, Total=8556 [2021-06-05 08:09:39,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7901 states. [2021-06-05 08:09:39,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7901 to 6328. [2021-06-05 08:09:39,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6328 states, 6327 states have (on average 2.8264580369843526) internal successors, (17883), 6327 states have internal predecessors, (17883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:39,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6328 states to 6328 states and 17883 transitions. [2021-06-05 08:09:39,647 INFO L78 Accepts]: Start accepts. Automaton has 6328 states and 17883 transitions. Word has length 190 [2021-06-05 08:09:39,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:09:39,647 INFO L482 AbstractCegarLoop]: Abstraction has 6328 states and 17883 transitions. [2021-06-05 08:09:39,647 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 39 states, 39 states have (on average 4.9743589743589745) internal successors, (194), 39 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:39,647 INFO L276 IsEmpty]: Start isEmpty. Operand 6328 states and 17883 transitions. [2021-06-05 08:09:39,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-06-05 08:09:39,652 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:09:39,652 INFO L521 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:09:39,852 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable517,513 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:09:39,853 INFO L430 AbstractCegarLoop]: === Iteration 519 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:09:39,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:09:39,853 INFO L82 PathProgramCache]: Analyzing trace with hash -1502958331, now seen corresponding path program 510 times [2021-06-05 08:09:39,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:09:39,853 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454835636] [2021-06-05 08:09:39,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:09:39,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:09:40,202 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:09:40,202 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:09:40,202 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454835636] [2021-06-05 08:09:40,202 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454835636] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:09:40,202 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1797328111] [2021-06-05 08:09:40,202 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 514 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 514 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:09:40,317 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 17 check-sat command(s) [2021-06-05 08:09:40,317 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:09:40,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 38 conjunts are in the unsatisfiable core [2021-06-05 08:09:40,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:09:40,536 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:09:40,536 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1797328111] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:09:40,536 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:09:40,536 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 38 [2021-06-05 08:09:40,536 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200525255] [2021-06-05 08:09:40,536 INFO L462 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-06-05 08:09:40,536 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:09:40,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-06-05 08:09:40,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=1193, Unknown=0, NotChecked=0, Total=1406 [2021-06-05 08:09:40,537 INFO L87 Difference]: Start difference. First operand 6328 states and 17883 transitions. Second operand has 38 states, 38 states have (on average 5.052631578947368) internal successors, (192), 38 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:41,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:09:41,687 INFO L93 Difference]: Finished difference Result 8121 states and 21597 transitions. [2021-06-05 08:09:41,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-06-05 08:09:41,687 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 5.052631578947368) internal successors, (192), 38 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 190 [2021-06-05 08:09:41,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:09:41,695 INFO L225 Difference]: With dead ends: 8121 [2021-06-05 08:09:41,695 INFO L226 Difference]: Without dead ends: 7851 [2021-06-05 08:09:41,696 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2000 ImplicationChecksByTransitivity, 1165.4ms TimeCoverageRelationStatistics Valid=2006, Invalid=6184, Unknown=0, NotChecked=0, Total=8190 [2021-06-05 08:09:41,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7851 states. [2021-06-05 08:09:41,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7851 to 6328. [2021-06-05 08:09:41,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6328 states, 6327 states have (on average 2.8264580369843526) internal successors, (17883), 6327 states have internal predecessors, (17883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:41,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6328 states to 6328 states and 17883 transitions. [2021-06-05 08:09:41,761 INFO L78 Accepts]: Start accepts. Automaton has 6328 states and 17883 transitions. Word has length 190 [2021-06-05 08:09:41,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:09:41,761 INFO L482 AbstractCegarLoop]: Abstraction has 6328 states and 17883 transitions. [2021-06-05 08:09:41,761 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 38 states, 38 states have (on average 5.052631578947368) internal successors, (192), 38 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:41,761 INFO L276 IsEmpty]: Start isEmpty. Operand 6328 states and 17883 transitions. [2021-06-05 08:09:41,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-06-05 08:09:41,765 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:09:41,765 INFO L521 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:09:41,966 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable518,514 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:09:41,966 INFO L430 AbstractCegarLoop]: === Iteration 520 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:09:41,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:09:41,966 INFO L82 PathProgramCache]: Analyzing trace with hash -693906475, now seen corresponding path program 511 times [2021-06-05 08:09:41,966 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:09:41,966 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393695352] [2021-06-05 08:09:41,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:09:41,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:09:42,321 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:09:42,321 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:09:42,321 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393695352] [2021-06-05 08:09:42,321 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393695352] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:09:42,321 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2075076133] [2021-06-05 08:09:42,321 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 515 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 515 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:09:42,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:09:42,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 38 conjunts are in the unsatisfiable core [2021-06-05 08:09:42,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:09:42,622 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:09:42,622 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2075076133] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:09:42,622 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:09:42,622 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 39 [2021-06-05 08:09:42,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514238937] [2021-06-05 08:09:42,622 INFO L462 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-06-05 08:09:42,623 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:09:42,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-06-05 08:09:42,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=1272, Unknown=0, NotChecked=0, Total=1482 [2021-06-05 08:09:42,623 INFO L87 Difference]: Start difference. First operand 6328 states and 17883 transitions. Second operand has 39 states, 39 states have (on average 4.9743589743589745) internal successors, (194), 39 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:44,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:09:44,029 INFO L93 Difference]: Finished difference Result 8071 states and 21497 transitions. [2021-06-05 08:09:44,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-06-05 08:09:44,030 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 4.9743589743589745) internal successors, (194), 39 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 190 [2021-06-05 08:09:44,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:09:44,038 INFO L225 Difference]: With dead ends: 8071 [2021-06-05 08:09:44,038 INFO L226 Difference]: Without dead ends: 7801 [2021-06-05 08:09:44,038 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2179 ImplicationChecksByTransitivity, 1411.3ms TimeCoverageRelationStatistics Valid=2171, Invalid=6759, Unknown=0, NotChecked=0, Total=8930 [2021-06-05 08:09:44,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7801 states. [2021-06-05 08:09:44,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7801 to 6328. [2021-06-05 08:09:44,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6328 states, 6327 states have (on average 2.8264580369843526) internal successors, (17883), 6327 states have internal predecessors, (17883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:44,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6328 states to 6328 states and 17883 transitions. [2021-06-05 08:09:44,106 INFO L78 Accepts]: Start accepts. Automaton has 6328 states and 17883 transitions. Word has length 190 [2021-06-05 08:09:44,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:09:44,107 INFO L482 AbstractCegarLoop]: Abstraction has 6328 states and 17883 transitions. [2021-06-05 08:09:44,107 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 39 states, 39 states have (on average 4.9743589743589745) internal successors, (194), 39 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:44,107 INFO L276 IsEmpty]: Start isEmpty. Operand 6328 states and 17883 transitions. [2021-06-05 08:09:44,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-06-05 08:09:44,111 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:09:44,111 INFO L521 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:09:44,312 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable519,515 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:09:44,312 INFO L430 AbstractCegarLoop]: === Iteration 521 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:09:44,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:09:44,312 INFO L82 PathProgramCache]: Analyzing trace with hash -2085856573, now seen corresponding path program 512 times [2021-06-05 08:09:44,312 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:09:44,312 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047460950] [2021-06-05 08:09:44,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:09:44,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:09:44,657 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:09:44,657 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:09:44,657 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047460950] [2021-06-05 08:09:44,657 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047460950] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:09:44,657 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [451673520] [2021-06-05 08:09:44,657 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 516 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 516 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:09:44,724 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 08:09:44,724 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:09:44,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 38 conjunts are in the unsatisfiable core [2021-06-05 08:09:44,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:09:44,940 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:09:44,940 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [451673520] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:09:44,940 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:09:44,940 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 38 [2021-06-05 08:09:44,940 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006922015] [2021-06-05 08:09:44,941 INFO L462 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-06-05 08:09:44,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:09:44,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-06-05 08:09:44,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=220, Invalid=1186, Unknown=0, NotChecked=0, Total=1406 [2021-06-05 08:09:44,941 INFO L87 Difference]: Start difference. First operand 6328 states and 17883 transitions. Second operand has 38 states, 38 states have (on average 5.052631578947368) internal successors, (192), 38 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:46,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:09:46,131 INFO L93 Difference]: Finished difference Result 8021 states and 21397 transitions. [2021-06-05 08:09:46,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-06-05 08:09:46,131 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 5.052631578947368) internal successors, (192), 38 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 190 [2021-06-05 08:09:46,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:09:46,139 INFO L225 Difference]: With dead ends: 8021 [2021-06-05 08:09:46,139 INFO L226 Difference]: Without dead ends: 7751 [2021-06-05 08:09:46,139 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2139 ImplicationChecksByTransitivity, 1223.0ms TimeCoverageRelationStatistics Valid=2142, Invalid=6414, Unknown=0, NotChecked=0, Total=8556 [2021-06-05 08:09:46,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7751 states. [2021-06-05 08:09:46,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7751 to 6328. [2021-06-05 08:09:46,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6328 states, 6327 states have (on average 2.8264580369843526) internal successors, (17883), 6327 states have internal predecessors, (17883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:46,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6328 states to 6328 states and 17883 transitions. [2021-06-05 08:09:46,202 INFO L78 Accepts]: Start accepts. Automaton has 6328 states and 17883 transitions. Word has length 190 [2021-06-05 08:09:46,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:09:46,203 INFO L482 AbstractCegarLoop]: Abstraction has 6328 states and 17883 transitions. [2021-06-05 08:09:46,203 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 38 states, 38 states have (on average 5.052631578947368) internal successors, (192), 38 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:46,203 INFO L276 IsEmpty]: Start isEmpty. Operand 6328 states and 17883 transitions. [2021-06-05 08:09:46,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-06-05 08:09:46,207 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:09:46,207 INFO L521 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:09:46,408 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 516 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable520 [2021-06-05 08:09:46,408 INFO L430 AbstractCegarLoop]: === Iteration 522 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:09:46,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:09:46,408 INFO L82 PathProgramCache]: Analyzing trace with hash 1964033427, now seen corresponding path program 513 times [2021-06-05 08:09:46,408 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:09:46,408 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497154401] [2021-06-05 08:09:46,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:09:46,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:09:46,758 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:09:46,758 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:09:46,758 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497154401] [2021-06-05 08:09:46,758 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497154401] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:09:46,758 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [878737114] [2021-06-05 08:09:46,758 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 517 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 517 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:09:46,840 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) [2021-06-05 08:09:46,840 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:09:46,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 38 conjunts are in the unsatisfiable core [2021-06-05 08:09:46,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:09:47,075 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:09:47,075 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [878737114] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:09:47,075 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:09:47,075 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 39 [2021-06-05 08:09:47,075 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770999564] [2021-06-05 08:09:47,076 INFO L462 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-06-05 08:09:47,076 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:09:47,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-06-05 08:09:47,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=1264, Unknown=0, NotChecked=0, Total=1482 [2021-06-05 08:09:47,076 INFO L87 Difference]: Start difference. First operand 6328 states and 17883 transitions. Second operand has 39 states, 39 states have (on average 4.9743589743589745) internal successors, (194), 39 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:48,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:09:48,531 INFO L93 Difference]: Finished difference Result 7971 states and 21297 transitions. [2021-06-05 08:09:48,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-06-05 08:09:48,531 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 4.9743589743589745) internal successors, (194), 39 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 190 [2021-06-05 08:09:48,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:09:48,538 INFO L225 Difference]: With dead ends: 7971 [2021-06-05 08:09:48,538 INFO L226 Difference]: Without dead ends: 7701 [2021-06-05 08:09:48,538 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2325 ImplicationChecksByTransitivity, 1473.9ms TimeCoverageRelationStatistics Valid=2315, Invalid=6997, Unknown=0, NotChecked=0, Total=9312 [2021-06-05 08:09:48,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7701 states. [2021-06-05 08:09:48,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7701 to 6328. [2021-06-05 08:09:48,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6328 states, 6327 states have (on average 2.8264580369843526) internal successors, (17883), 6327 states have internal predecessors, (17883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:48,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6328 states to 6328 states and 17883 transitions. [2021-06-05 08:09:48,603 INFO L78 Accepts]: Start accepts. Automaton has 6328 states and 17883 transitions. Word has length 190 [2021-06-05 08:09:48,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:09:48,604 INFO L482 AbstractCegarLoop]: Abstraction has 6328 states and 17883 transitions. [2021-06-05 08:09:48,604 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 39 states, 39 states have (on average 4.9743589743589745) internal successors, (194), 39 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:48,604 INFO L276 IsEmpty]: Start isEmpty. Operand 6328 states and 17883 transitions. [2021-06-05 08:09:48,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-06-05 08:09:48,608 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:09:48,608 INFO L521 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:09:48,808 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 517 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable521 [2021-06-05 08:09:48,809 INFO L430 AbstractCegarLoop]: === Iteration 523 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:09:48,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:09:48,809 INFO L82 PathProgramCache]: Analyzing trace with hash 1587183105, now seen corresponding path program 514 times [2021-06-05 08:09:48,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:09:48,809 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936209276] [2021-06-05 08:09:48,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:09:48,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:09:49,153 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:09:49,153 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:09:49,153 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936209276] [2021-06-05 08:09:49,153 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936209276] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:09:49,153 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1967134507] [2021-06-05 08:09:49,153 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 518 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 518 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:09:49,218 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 08:09:49,218 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:09:49,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 38 conjunts are in the unsatisfiable core [2021-06-05 08:09:49,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:09:49,427 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:09:49,428 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1967134507] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:09:49,428 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:09:49,428 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 38 [2021-06-05 08:09:49,428 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243370393] [2021-06-05 08:09:49,428 INFO L462 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-06-05 08:09:49,428 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:09:49,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-06-05 08:09:49,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=1175, Unknown=0, NotChecked=0, Total=1406 [2021-06-05 08:09:49,429 INFO L87 Difference]: Start difference. First operand 6328 states and 17883 transitions. Second operand has 38 states, 38 states have (on average 5.052631578947368) internal successors, (192), 38 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:50,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:09:50,711 INFO L93 Difference]: Finished difference Result 7921 states and 21197 transitions. [2021-06-05 08:09:50,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-06-05 08:09:50,712 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 5.052631578947368) internal successors, (192), 38 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 190 [2021-06-05 08:09:50,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:09:50,719 INFO L225 Difference]: With dead ends: 7921 [2021-06-05 08:09:50,719 INFO L226 Difference]: Without dead ends: 7651 [2021-06-05 08:09:50,720 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2282 ImplicationChecksByTransitivity, 1245.4ms TimeCoverageRelationStatistics Valid=2294, Invalid=6636, Unknown=0, NotChecked=0, Total=8930 [2021-06-05 08:09:50,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7651 states. [2021-06-05 08:09:50,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7651 to 6328. [2021-06-05 08:09:50,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6328 states, 6327 states have (on average 2.8264580369843526) internal successors, (17883), 6327 states have internal predecessors, (17883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:50,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6328 states to 6328 states and 17883 transitions. [2021-06-05 08:09:50,786 INFO L78 Accepts]: Start accepts. Automaton has 6328 states and 17883 transitions. Word has length 190 [2021-06-05 08:09:50,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:09:50,786 INFO L482 AbstractCegarLoop]: Abstraction has 6328 states and 17883 transitions. [2021-06-05 08:09:50,786 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 38 states, 38 states have (on average 5.052631578947368) internal successors, (192), 38 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:50,786 INFO L276 IsEmpty]: Start isEmpty. Operand 6328 states and 17883 transitions. [2021-06-05 08:09:50,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-06-05 08:09:50,791 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:09:50,791 INFO L521 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:09:50,991 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable522,518 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:09:50,992 INFO L430 AbstractCegarLoop]: === Iteration 524 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:09:50,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:09:50,992 INFO L82 PathProgramCache]: Analyzing trace with hash -1381028655, now seen corresponding path program 515 times [2021-06-05 08:09:50,992 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:09:50,992 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856002968] [2021-06-05 08:09:50,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:09:51,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:09:51,377 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:09:51,377 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:09:51,377 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856002968] [2021-06-05 08:09:51,377 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856002968] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:09:51,377 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [334784457] [2021-06-05 08:09:51,377 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 519 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 519 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:09:51,446 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) [2021-06-05 08:09:51,447 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:09:51,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 38 conjunts are in the unsatisfiable core [2021-06-05 08:09:51,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:09:51,679 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:09:51,679 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [334784457] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:09:51,679 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:09:51,679 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 39 [2021-06-05 08:09:51,679 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721599910] [2021-06-05 08:09:51,680 INFO L462 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-06-05 08:09:51,680 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:09:51,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-06-05 08:09:51,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=1252, Unknown=0, NotChecked=0, Total=1482 [2021-06-05 08:09:51,680 INFO L87 Difference]: Start difference. First operand 6328 states and 17883 transitions. Second operand has 39 states, 39 states have (on average 4.9743589743589745) internal successors, (194), 39 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:53,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:09:53,256 INFO L93 Difference]: Finished difference Result 7871 states and 21097 transitions. [2021-06-05 08:09:53,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-06-05 08:09:53,256 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 4.9743589743589745) internal successors, (194), 39 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 190 [2021-06-05 08:09:53,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:09:53,264 INFO L225 Difference]: With dead ends: 7871 [2021-06-05 08:09:53,264 INFO L226 Difference]: Without dead ends: 7601 [2021-06-05 08:09:53,265 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2475 ImplicationChecksByTransitivity, 1503.5ms TimeCoverageRelationStatistics Valid=2475, Invalid=7227, Unknown=0, NotChecked=0, Total=9702 [2021-06-05 08:09:53,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7601 states. [2021-06-05 08:09:53,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7601 to 6328. [2021-06-05 08:09:53,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6328 states, 6327 states have (on average 2.8264580369843526) internal successors, (17883), 6327 states have internal predecessors, (17883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:53,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6328 states to 6328 states and 17883 transitions. [2021-06-05 08:09:53,333 INFO L78 Accepts]: Start accepts. Automaton has 6328 states and 17883 transitions. Word has length 190 [2021-06-05 08:09:53,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:09:53,333 INFO L482 AbstractCegarLoop]: Abstraction has 6328 states and 17883 transitions. [2021-06-05 08:09:53,333 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 39 states, 39 states have (on average 4.9743589743589745) internal successors, (194), 39 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:53,333 INFO L276 IsEmpty]: Start isEmpty. Operand 6328 states and 17883 transitions. [2021-06-05 08:09:53,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-06-05 08:09:53,338 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:09:53,338 INFO L521 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:09:53,539 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 519 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable523 [2021-06-05 08:09:53,539 INFO L430 AbstractCegarLoop]: === Iteration 525 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:09:53,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:09:53,539 INFO L82 PathProgramCache]: Analyzing trace with hash -926812481, now seen corresponding path program 516 times [2021-06-05 08:09:53,539 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:09:53,539 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867853411] [2021-06-05 08:09:53,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:09:53,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:09:53,883 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:09:53,884 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:09:53,884 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867853411] [2021-06-05 08:09:53,884 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867853411] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:09:53,884 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1565497722] [2021-06-05 08:09:53,884 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 520 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 520 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:09:53,964 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 17 check-sat command(s) [2021-06-05 08:09:53,965 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:09:53,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 38 conjunts are in the unsatisfiable core [2021-06-05 08:09:53,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:09:54,207 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:09:54,207 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1565497722] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:09:54,207 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:09:54,207 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 38 [2021-06-05 08:09:54,207 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564807657] [2021-06-05 08:09:54,207 INFO L462 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-06-05 08:09:54,207 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:09:54,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-06-05 08:09:54,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=246, Invalid=1160, Unknown=0, NotChecked=0, Total=1406 [2021-06-05 08:09:54,208 INFO L87 Difference]: Start difference. First operand 6328 states and 17883 transitions. Second operand has 38 states, 38 states have (on average 5.052631578947368) internal successors, (192), 38 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:55,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:09:55,587 INFO L93 Difference]: Finished difference Result 7821 states and 20997 transitions. [2021-06-05 08:09:55,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-06-05 08:09:55,587 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 5.052631578947368) internal successors, (192), 38 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 190 [2021-06-05 08:09:55,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:09:55,596 INFO L225 Difference]: With dead ends: 7821 [2021-06-05 08:09:55,596 INFO L226 Difference]: Without dead ends: 7551 [2021-06-05 08:09:55,597 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2429 ImplicationChecksByTransitivity, 1287.3ms TimeCoverageRelationStatistics Valid=2462, Invalid=6850, Unknown=0, NotChecked=0, Total=9312 [2021-06-05 08:09:55,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7551 states. [2021-06-05 08:09:55,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7551 to 6328. [2021-06-05 08:09:55,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6328 states, 6327 states have (on average 2.8264580369843526) internal successors, (17883), 6327 states have internal predecessors, (17883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:55,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6328 states to 6328 states and 17883 transitions. [2021-06-05 08:09:55,673 INFO L78 Accepts]: Start accepts. Automaton has 6328 states and 17883 transitions. Word has length 190 [2021-06-05 08:09:55,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:09:55,673 INFO L482 AbstractCegarLoop]: Abstraction has 6328 states and 17883 transitions. [2021-06-05 08:09:55,674 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 38 states, 38 states have (on average 5.052631578947368) internal successors, (192), 38 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:55,674 INFO L276 IsEmpty]: Start isEmpty. Operand 6328 states and 17883 transitions. [2021-06-05 08:09:55,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-06-05 08:09:55,679 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:09:55,679 INFO L521 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:09:55,879 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable524,520 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:09:55,879 INFO L430 AbstractCegarLoop]: === Iteration 526 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:09:55,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:09:55,879 INFO L82 PathProgramCache]: Analyzing trace with hash 72083855, now seen corresponding path program 517 times [2021-06-05 08:09:55,879 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:09:55,880 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459050269] [2021-06-05 08:09:55,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:09:55,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:09:56,228 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:09:56,228 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:09:56,229 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459050269] [2021-06-05 08:09:56,229 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459050269] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:09:56,229 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [62302445] [2021-06-05 08:09:56,229 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 521 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 521 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:09:56,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:09:56,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 38 conjunts are in the unsatisfiable core [2021-06-05 08:09:56,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:09:56,524 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:09:56,524 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [62302445] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:09:56,524 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:09:56,524 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 39 [2021-06-05 08:09:56,524 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834303273] [2021-06-05 08:09:56,525 INFO L462 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-06-05 08:09:56,525 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:09:56,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-06-05 08:09:56,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=246, Invalid=1236, Unknown=0, NotChecked=0, Total=1482 [2021-06-05 08:09:56,525 INFO L87 Difference]: Start difference. First operand 6328 states and 17883 transitions. Second operand has 39 states, 39 states have (on average 4.9743589743589745) internal successors, (194), 39 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:58,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:09:58,184 INFO L93 Difference]: Finished difference Result 7771 states and 20897 transitions. [2021-06-05 08:09:58,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-06-05 08:09:58,185 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 4.9743589743589745) internal successors, (194), 39 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 190 [2021-06-05 08:09:58,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:09:58,192 INFO L225 Difference]: With dead ends: 7771 [2021-06-05 08:09:58,192 INFO L226 Difference]: Without dead ends: 7501 [2021-06-05 08:09:58,193 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2629 ImplicationChecksByTransitivity, 1576.2ms TimeCoverageRelationStatistics Valid=2651, Invalid=7449, Unknown=0, NotChecked=0, Total=10100 [2021-06-05 08:09:58,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7501 states. [2021-06-05 08:09:58,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7501 to 6328. [2021-06-05 08:09:58,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6328 states, 6327 states have (on average 2.8264580369843526) internal successors, (17883), 6327 states have internal predecessors, (17883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:58,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6328 states to 6328 states and 17883 transitions. [2021-06-05 08:09:58,258 INFO L78 Accepts]: Start accepts. Automaton has 6328 states and 17883 transitions. Word has length 190 [2021-06-05 08:09:58,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:09:58,258 INFO L482 AbstractCegarLoop]: Abstraction has 6328 states and 17883 transitions. [2021-06-05 08:09:58,258 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 39 states, 39 states have (on average 4.9743589743589745) internal successors, (194), 39 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:58,258 INFO L276 IsEmpty]: Start isEmpty. Operand 6328 states and 17883 transitions. [2021-06-05 08:09:58,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-06-05 08:09:58,262 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:09:58,262 INFO L521 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:09:58,463 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 521 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable525 [2021-06-05 08:09:58,463 INFO L430 AbstractCegarLoop]: === Iteration 527 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:09:58,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:09:58,463 INFO L82 PathProgramCache]: Analyzing trace with hash -1807244035, now seen corresponding path program 518 times [2021-06-05 08:09:58,463 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:09:58,463 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058461362] [2021-06-05 08:09:58,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:09:58,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:09:58,802 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:09:58,802 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:09:58,802 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058461362] [2021-06-05 08:09:58,802 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058461362] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:09:58,802 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1650740443] [2021-06-05 08:09:58,802 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 522 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 522 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:09:58,866 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 08:09:58,866 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:09:58,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 38 conjunts are in the unsatisfiable core [2021-06-05 08:09:58,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:09:59,077 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:09:59,077 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1650740443] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:09:59,077 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:09:59,077 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 38 [2021-06-05 08:09:59,077 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066906004] [2021-06-05 08:09:59,078 INFO L462 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-06-05 08:09:59,078 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:09:59,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-06-05 08:09:59,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=265, Invalid=1141, Unknown=0, NotChecked=0, Total=1406 [2021-06-05 08:09:59,078 INFO L87 Difference]: Start difference. First operand 6328 states and 17883 transitions. Second operand has 38 states, 38 states have (on average 5.052631578947368) internal successors, (192), 38 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:10:00,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:10:00,479 INFO L93 Difference]: Finished difference Result 7721 states and 20797 transitions. [2021-06-05 08:10:00,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-06-05 08:10:00,480 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 5.052631578947368) internal successors, (192), 38 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 190 [2021-06-05 08:10:00,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:10:00,486 INFO L225 Difference]: With dead ends: 7721 [2021-06-05 08:10:00,486 INFO L226 Difference]: Without dead ends: 7451 [2021-06-05 08:10:00,487 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2580 ImplicationChecksByTransitivity, 1340.5ms TimeCoverageRelationStatistics Valid=2646, Invalid=7056, Unknown=0, NotChecked=0, Total=9702 [2021-06-05 08:10:00,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7451 states. [2021-06-05 08:10:00,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7451 to 6328. [2021-06-05 08:10:00,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6328 states, 6327 states have (on average 2.8264580369843526) internal successors, (17883), 6327 states have internal predecessors, (17883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:10:00,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6328 states to 6328 states and 17883 transitions. [2021-06-05 08:10:00,551 INFO L78 Accepts]: Start accepts. Automaton has 6328 states and 17883 transitions. Word has length 190 [2021-06-05 08:10:00,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:10:00,551 INFO L482 AbstractCegarLoop]: Abstraction has 6328 states and 17883 transitions. [2021-06-05 08:10:00,551 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 38 states, 38 states have (on average 5.052631578947368) internal successors, (192), 38 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:10:00,551 INFO L276 IsEmpty]: Start isEmpty. Operand 6328 states and 17883 transitions. [2021-06-05 08:10:00,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-06-05 08:10:00,556 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:10:00,556 INFO L521 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:10:00,756 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable526,522 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:10:00,756 INFO L430 AbstractCegarLoop]: === Iteration 528 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:10:00,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:10:00,756 INFO L82 PathProgramCache]: Analyzing trace with hash 223075277, now seen corresponding path program 519 times [2021-06-05 08:10:00,756 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:10:00,757 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593958847] [2021-06-05 08:10:00,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:10:00,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:10:01,104 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:10:01,105 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:10:01,105 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593958847] [2021-06-05 08:10:01,105 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593958847] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:10:01,105 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [612600806] [2021-06-05 08:10:01,105 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 523 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 523 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:10:01,186 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) [2021-06-05 08:10:01,186 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:10:01,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 38 conjunts are in the unsatisfiable core [2021-06-05 08:10:01,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:10:01,416 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:10:01,416 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [612600806] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:10:01,416 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:10:01,416 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 39 [2021-06-05 08:10:01,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121287448] [2021-06-05 08:10:01,416 INFO L462 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-06-05 08:10:01,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:10:01,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-06-05 08:10:01,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=266, Invalid=1216, Unknown=0, NotChecked=0, Total=1482 [2021-06-05 08:10:01,417 INFO L87 Difference]: Start difference. First operand 6328 states and 17883 transitions. Second operand has 39 states, 39 states have (on average 4.9743589743589745) internal successors, (194), 39 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:10:03,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:10:03,121 INFO L93 Difference]: Finished difference Result 7671 states and 20697 transitions. [2021-06-05 08:10:03,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2021-06-05 08:10:03,121 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 4.9743589743589745) internal successors, (194), 39 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 190 [2021-06-05 08:10:03,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:10:03,129 INFO L225 Difference]: With dead ends: 7671 [2021-06-05 08:10:03,129 INFO L226 Difference]: Without dead ends: 7401 [2021-06-05 08:10:03,130 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2787 ImplicationChecksByTransitivity, 1666.5ms TimeCoverageRelationStatistics Valid=2843, Invalid=7663, Unknown=0, NotChecked=0, Total=10506 [2021-06-05 08:10:03,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7401 states. [2021-06-05 08:10:03,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7401 to 6328. [2021-06-05 08:10:03,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6328 states, 6327 states have (on average 2.8264580369843526) internal successors, (17883), 6327 states have internal predecessors, (17883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:10:03,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6328 states to 6328 states and 17883 transitions. [2021-06-05 08:10:03,198 INFO L78 Accepts]: Start accepts. Automaton has 6328 states and 17883 transitions. Word has length 190 [2021-06-05 08:10:03,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:10:03,198 INFO L482 AbstractCegarLoop]: Abstraction has 6328 states and 17883 transitions. [2021-06-05 08:10:03,198 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 39 states, 39 states have (on average 4.9743589743589745) internal successors, (194), 39 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:10:03,199 INFO L276 IsEmpty]: Start isEmpty. Operand 6328 states and 17883 transitions. [2021-06-05 08:10:03,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-06-05 08:10:03,203 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:10:03,203 INFO L521 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:10:03,403 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable527,523 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:10:03,403 INFO L430 AbstractCegarLoop]: === Iteration 529 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:10:03,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:10:03,404 INFO L82 PathProgramCache]: Analyzing trace with hash 837314747, now seen corresponding path program 520 times [2021-06-05 08:10:03,404 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:10:03,404 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780021286] [2021-06-05 08:10:03,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:10:03,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:10:03,755 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:10:03,756 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:10:03,756 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780021286] [2021-06-05 08:10:03,756 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780021286] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:10:03,756 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1379523176] [2021-06-05 08:10:03,756 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 524 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 524 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:10:03,822 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 08:10:03,822 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:10:03,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 38 conjunts are in the unsatisfiable core [2021-06-05 08:10:03,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:10:04,033 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:10:04,033 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1379523176] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:10:04,033 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:10:04,033 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 38 [2021-06-05 08:10:04,033 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907606902] [2021-06-05 08:10:04,033 INFO L462 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-06-05 08:10:04,033 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:10:04,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-06-05 08:10:04,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=288, Invalid=1118, Unknown=0, NotChecked=0, Total=1406 [2021-06-05 08:10:04,034 INFO L87 Difference]: Start difference. First operand 6328 states and 17883 transitions. Second operand has 38 states, 38 states have (on average 5.052631578947368) internal successors, (192), 38 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:10:05,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:10:05,429 INFO L93 Difference]: Finished difference Result 7621 states and 20597 transitions. [2021-06-05 08:10:05,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2021-06-05 08:10:05,429 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 5.052631578947368) internal successors, (192), 38 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 190 [2021-06-05 08:10:05,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:10:05,436 INFO L225 Difference]: With dead ends: 7621 [2021-06-05 08:10:05,436 INFO L226 Difference]: Without dead ends: 7351 [2021-06-05 08:10:05,436 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2735 ImplicationChecksByTransitivity, 1376.0ms TimeCoverageRelationStatistics Valid=2846, Invalid=7254, Unknown=0, NotChecked=0, Total=10100 [2021-06-05 08:10:05,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7351 states. [2021-06-05 08:10:05,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7351 to 6328. [2021-06-05 08:10:05,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6328 states, 6327 states have (on average 2.8264580369843526) internal successors, (17883), 6327 states have internal predecessors, (17883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:10:05,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6328 states to 6328 states and 17883 transitions. [2021-06-05 08:10:05,510 INFO L78 Accepts]: Start accepts. Automaton has 6328 states and 17883 transitions. Word has length 190 [2021-06-05 08:10:05,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:10:05,510 INFO L482 AbstractCegarLoop]: Abstraction has 6328 states and 17883 transitions. [2021-06-05 08:10:05,511 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 38 states, 38 states have (on average 5.052631578947368) internal successors, (192), 38 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:10:05,511 INFO L276 IsEmpty]: Start isEmpty. Operand 6328 states and 17883 transitions. [2021-06-05 08:10:05,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-06-05 08:10:05,516 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:10:05,516 INFO L521 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:10:05,716 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable528,524 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:10:05,716 INFO L430 AbstractCegarLoop]: === Iteration 530 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:10:05,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:10:05,716 INFO L82 PathProgramCache]: Analyzing trace with hash -877927541, now seen corresponding path program 521 times [2021-06-05 08:10:05,717 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:10:05,717 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737688621] [2021-06-05 08:10:05,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:10:05,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:10:06,081 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:10:06,082 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:10:06,082 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737688621] [2021-06-05 08:10:06,082 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737688621] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:10:06,082 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [355324174] [2021-06-05 08:10:06,082 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 525 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 525 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:10:06,151 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) [2021-06-05 08:10:06,151 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:10:06,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 38 conjunts are in the unsatisfiable core [2021-06-05 08:10:06,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:10:06,374 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:10:06,374 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [355324174] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:10:06,374 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:10:06,374 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 39 [2021-06-05 08:10:06,374 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013977833] [2021-06-05 08:10:06,375 INFO L462 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-06-05 08:10:06,375 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:10:06,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-06-05 08:10:06,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=290, Invalid=1192, Unknown=0, NotChecked=0, Total=1482 [2021-06-05 08:10:06,375 INFO L87 Difference]: Start difference. First operand 6328 states and 17883 transitions. Second operand has 39 states, 39 states have (on average 4.9743589743589745) internal successors, (194), 39 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:10:08,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:10:08,157 INFO L93 Difference]: Finished difference Result 8079 states and 21863 transitions. [2021-06-05 08:10:08,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-06-05 08:10:08,157 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 4.9743589743589745) internal successors, (194), 39 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 190 [2021-06-05 08:10:08,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:10:08,166 INFO L225 Difference]: With dead ends: 8079 [2021-06-05 08:10:08,166 INFO L226 Difference]: Without dead ends: 7456 [2021-06-05 08:10:08,167 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3080 ImplicationChecksByTransitivity, 1743.2ms TimeCoverageRelationStatistics Valid=3074, Invalid=8268, Unknown=0, NotChecked=0, Total=11342 [2021-06-05 08:10:08,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7456 states. [2021-06-05 08:10:08,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7456 to 6238. [2021-06-05 08:10:08,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6238 states, 6237 states have (on average 2.829565496232163) internal successors, (17648), 6237 states have internal predecessors, (17648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:10:08,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6238 states to 6238 states and 17648 transitions. [2021-06-05 08:10:08,275 INFO L78 Accepts]: Start accepts. Automaton has 6238 states and 17648 transitions. Word has length 190 [2021-06-05 08:10:08,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:10:08,276 INFO L482 AbstractCegarLoop]: Abstraction has 6238 states and 17648 transitions. [2021-06-05 08:10:08,276 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 39 states, 39 states have (on average 4.9743589743589745) internal successors, (194), 39 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:10:08,276 INFO L276 IsEmpty]: Start isEmpty. Operand 6238 states and 17648 transitions. [2021-06-05 08:10:08,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-06-05 08:10:08,281 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:10:08,281 INFO L521 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:10:08,481 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable529,525 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:10:08,481 INFO L430 AbstractCegarLoop]: === Iteration 531 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:10:08,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:10:08,482 INFO L82 PathProgramCache]: Analyzing trace with hash -1910575143, now seen corresponding path program 522 times [2021-06-05 08:10:08,482 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:10:08,482 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522903325] [2021-06-05 08:10:08,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:10:08,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:10:08,837 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:10:08,837 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:10:08,837 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522903325] [2021-06-05 08:10:08,837 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522903325] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:10:08,837 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1885406385] [2021-06-05 08:10:08,837 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 526 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 526 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:10:08,919 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 17 check-sat command(s) [2021-06-05 08:10:08,920 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:10:08,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 38 conjunts are in the unsatisfiable core [2021-06-05 08:10:08,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:10:09,130 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:10:09,130 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1885406385] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:10:09,130 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:10:09,130 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 38 [2021-06-05 08:10:09,130 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894626694] [2021-06-05 08:10:09,131 INFO L462 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-06-05 08:10:09,131 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:10:09,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-06-05 08:10:09,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=315, Invalid=1091, Unknown=0, NotChecked=0, Total=1406 [2021-06-05 08:10:09,131 INFO L87 Difference]: Start difference. First operand 6238 states and 17648 transitions. Second operand has 38 states, 38 states have (on average 5.052631578947368) internal successors, (192), 38 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:10:10,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:10:10,580 INFO L93 Difference]: Finished difference Result 8308 states and 22581 transitions. [2021-06-05 08:10:10,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-06-05 08:10:10,580 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 5.052631578947368) internal successors, (192), 38 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 190 [2021-06-05 08:10:10,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:10:10,589 INFO L225 Difference]: With dead ends: 8308 [2021-06-05 08:10:10,589 INFO L226 Difference]: Without dead ends: 8038 [2021-06-05 08:10:10,590 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2893 ImplicationChecksByTransitivity, 1412.0ms TimeCoverageRelationStatistics Valid=3063, Invalid=7443, Unknown=0, NotChecked=0, Total=10506 [2021-06-05 08:10:10,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8038 states. [2021-06-05 08:10:10,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8038 to 6418. [2021-06-05 08:10:10,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6418 states, 6417 states have (on average 2.837307152875175) internal successors, (18207), 6417 states have internal predecessors, (18207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:10:10,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6418 states to 6418 states and 18207 transitions. [2021-06-05 08:10:10,671 INFO L78 Accepts]: Start accepts. Automaton has 6418 states and 18207 transitions. Word has length 190 [2021-06-05 08:10:10,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:10:10,672 INFO L482 AbstractCegarLoop]: Abstraction has 6418 states and 18207 transitions. [2021-06-05 08:10:10,672 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 38 states, 38 states have (on average 5.052631578947368) internal successors, (192), 38 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:10:10,672 INFO L276 IsEmpty]: Start isEmpty. Operand 6418 states and 18207 transitions. [2021-06-05 08:10:10,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-06-05 08:10:10,677 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:10:10,677 INFO L521 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:10:10,877 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 526 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable530 [2021-06-05 08:10:10,878 INFO L430 AbstractCegarLoop]: === Iteration 532 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:10:10,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:10:10,878 INFO L82 PathProgramCache]: Analyzing trace with hash -1888231893, now seen corresponding path program 523 times [2021-06-05 08:10:10,878 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:10:10,878 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393138039] [2021-06-05 08:10:10,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:10:10,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:10:11,273 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:10:11,273 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:10:11,273 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393138039] [2021-06-05 08:10:11,273 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393138039] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:10:11,273 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1739433795] [2021-06-05 08:10:11,273 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 527 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 527 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:10:11,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:10:11,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 38 conjunts are in the unsatisfiable core [2021-06-05 08:10:11,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:10:11,562 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:10:11,562 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1739433795] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:10:11,562 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:10:11,562 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 39 [2021-06-05 08:10:11,562 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249507638] [2021-06-05 08:10:11,562 INFO L462 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-06-05 08:10:11,562 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:10:11,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-06-05 08:10:11,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=318, Invalid=1164, Unknown=0, NotChecked=0, Total=1482 [2021-06-05 08:10:11,563 INFO L87 Difference]: Start difference. First operand 6418 states and 18207 transitions. Second operand has 39 states, 39 states have (on average 4.948717948717949) internal successors, (193), 39 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:10:13,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:10:13,375 INFO L93 Difference]: Finished difference Result 8251 states and 22441 transitions. [2021-06-05 08:10:13,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2021-06-05 08:10:13,376 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 4.948717948717949) internal successors, (193), 39 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 190 [2021-06-05 08:10:13,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:10:13,385 INFO L225 Difference]: With dead ends: 8251 [2021-06-05 08:10:13,385 INFO L226 Difference]: Without dead ends: 7676 [2021-06-05 08:10:13,386 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3326 ImplicationChecksByTransitivity, 1821.6ms TimeCoverageRelationStatistics Valid=3333, Invalid=8657, Unknown=0, NotChecked=0, Total=11990 [2021-06-05 08:10:13,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7676 states. [2021-06-05 08:10:13,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7676 to 6453. [2021-06-05 08:10:13,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6453 states, 6452 states have (on average 2.833694978301302) internal successors, (18283), 6452 states have internal predecessors, (18283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:10:13,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6453 states to 6453 states and 18283 transitions. [2021-06-05 08:10:13,467 INFO L78 Accepts]: Start accepts. Automaton has 6453 states and 18283 transitions. Word has length 190 [2021-06-05 08:10:13,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:10:13,467 INFO L482 AbstractCegarLoop]: Abstraction has 6453 states and 18283 transitions. [2021-06-05 08:10:13,467 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 39 states, 39 states have (on average 4.948717948717949) internal successors, (193), 39 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:10:13,468 INFO L276 IsEmpty]: Start isEmpty. Operand 6453 states and 18283 transitions. [2021-06-05 08:10:13,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-06-05 08:10:13,473 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:10:13,473 INFO L521 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 16, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:10:13,674 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 527 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable531 [2021-06-05 08:10:13,674 INFO L430 AbstractCegarLoop]: === Iteration 533 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:10:13,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:10:13,674 INFO L82 PathProgramCache]: Analyzing trace with hash 283286740, now seen corresponding path program 524 times [2021-06-05 08:10:13,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:10:13,674 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581464653] [2021-06-05 08:10:13,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:10:13,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:10:14,146 INFO L134 CoverageAnalysis]: Checked inductivity of 1187 backedges. 0 proven. 1187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:10:14,147 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:10:14,147 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581464653] [2021-06-05 08:10:14,147 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581464653] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:10:14,147 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [486265702] [2021-06-05 08:10:14,147 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 528 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 528 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:10:14,214 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 08:10:14,215 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:10:14,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 39 conjunts are in the unsatisfiable core [2021-06-05 08:10:14,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:10:14,459 INFO L134 CoverageAnalysis]: Checked inductivity of 1187 backedges. 0 proven. 1187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:10:14,460 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [486265702] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:10:14,460 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:10:14,460 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 39 [2021-06-05 08:10:14,460 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622414848] [2021-06-05 08:10:14,460 INFO L462 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-06-05 08:10:14,460 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:10:14,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-06-05 08:10:14,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=333, Invalid=1149, Unknown=0, NotChecked=0, Total=1482 [2021-06-05 08:10:14,460 INFO L87 Difference]: Start difference. First operand 6453 states and 18283 transitions. Second operand has 39 states, 39 states have (on average 5.051282051282051) internal successors, (197), 39 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:10:15,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:10:15,274 INFO L93 Difference]: Finished difference Result 8396 states and 22297 transitions. [2021-06-05 08:10:15,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-06-05 08:10:15,274 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 5.051282051282051) internal successors, (197), 39 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 195 [2021-06-05 08:10:15,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:10:15,283 INFO L225 Difference]: With dead ends: 8396 [2021-06-05 08:10:15,283 INFO L226 Difference]: Without dead ends: 8126 [2021-06-05 08:10:15,284 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1072 ImplicationChecksByTransitivity, 1035.9ms TimeCoverageRelationStatistics Valid=1604, Invalid=4248, Unknown=0, NotChecked=0, Total=5852 [2021-06-05 08:10:15,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8126 states. [2021-06-05 08:10:15,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8126 to 6453. [2021-06-05 08:10:15,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6453 states, 6452 states have (on average 2.833694978301302) internal successors, (18283), 6452 states have internal predecessors, (18283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:10:15,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6453 states to 6453 states and 18283 transitions. [2021-06-05 08:10:15,360 INFO L78 Accepts]: Start accepts. Automaton has 6453 states and 18283 transitions. Word has length 195 [2021-06-05 08:10:15,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:10:15,361 INFO L482 AbstractCegarLoop]: Abstraction has 6453 states and 18283 transitions. [2021-06-05 08:10:15,361 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 39 states, 39 states have (on average 5.051282051282051) internal successors, (197), 39 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:10:15,361 INFO L276 IsEmpty]: Start isEmpty. Operand 6453 states and 18283 transitions. [2021-06-05 08:10:15,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-06-05 08:10:15,366 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:10:15,366 INFO L521 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 16, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:10:15,567 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 528 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable532 [2021-06-05 08:10:15,567 INFO L430 AbstractCegarLoop]: === Iteration 534 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:10:15,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:10:15,567 INFO L82 PathProgramCache]: Analyzing trace with hash 112680868, now seen corresponding path program 525 times [2021-06-05 08:10:15,567 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:10:15,567 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674786830] [2021-06-05 08:10:15,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:10:15,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:10:16,050 INFO L134 CoverageAnalysis]: Checked inductivity of 1187 backedges. 0 proven. 1187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:10:16,050 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:10:16,050 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674786830] [2021-06-05 08:10:16,050 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674786830] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:10:16,050 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [261493584] [2021-06-05 08:10:16,050 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 529 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 529 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:10:16,135 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) [2021-06-05 08:10:16,135 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:10:16,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 39 conjunts are in the unsatisfiable core [2021-06-05 08:10:16,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:10:16,403 INFO L134 CoverageAnalysis]: Checked inductivity of 1187 backedges. 0 proven. 1187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:10:16,404 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [261493584] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:10:16,404 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:10:16,404 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 40 [2021-06-05 08:10:16,404 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643062807] [2021-06-05 08:10:16,404 INFO L462 AbstractCegarLoop]: Interpolant automaton has 40 states [2021-06-05 08:10:16,404 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:10:16,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-06-05 08:10:16,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=321, Invalid=1239, Unknown=0, NotChecked=0, Total=1560 [2021-06-05 08:10:16,404 INFO L87 Difference]: Start difference. First operand 6453 states and 18283 transitions. Second operand has 40 states, 40 states have (on average 4.975) internal successors, (199), 40 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:10:17,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:10:17,305 INFO L93 Difference]: Finished difference Result 9141 states and 23787 transitions. [2021-06-05 08:10:17,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-06-05 08:10:17,305 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 4.975) internal successors, (199), 40 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 195 [2021-06-05 08:10:17,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:10:17,314 INFO L225 Difference]: With dead ends: 9141 [2021-06-05 08:10:17,315 INFO L226 Difference]: Without dead ends: 8871 [2021-06-05 08:10:17,315 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1212 ImplicationChecksByTransitivity, 1085.6ms TimeCoverageRelationStatistics Valid=1680, Invalid=4640, Unknown=0, NotChecked=0, Total=6320 [2021-06-05 08:10:17,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8871 states. [2021-06-05 08:10:17,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8871 to 6453. [2021-06-05 08:10:17,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6453 states, 6452 states have (on average 2.833694978301302) internal successors, (18283), 6452 states have internal predecessors, (18283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:10:17,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6453 states to 6453 states and 18283 transitions. [2021-06-05 08:10:17,393 INFO L78 Accepts]: Start accepts. Automaton has 6453 states and 18283 transitions. Word has length 195 [2021-06-05 08:10:17,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:10:17,393 INFO L482 AbstractCegarLoop]: Abstraction has 6453 states and 18283 transitions. [2021-06-05 08:10:17,393 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 40 states, 40 states have (on average 4.975) internal successors, (199), 40 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:10:17,394 INFO L276 IsEmpty]: Start isEmpty. Operand 6453 states and 18283 transitions. [2021-06-05 08:10:17,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-06-05 08:10:17,399 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:10:17,399 INFO L521 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 16, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:10:17,599 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable533,529 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:10:17,600 INFO L430 AbstractCegarLoop]: === Iteration 535 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:10:17,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:10:17,600 INFO L82 PathProgramCache]: Analyzing trace with hash 954173714, now seen corresponding path program 526 times [2021-06-05 08:10:17,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:10:17,600 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603187479] [2021-06-05 08:10:17,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:10:17,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:10:18,031 INFO L134 CoverageAnalysis]: Checked inductivity of 1187 backedges. 0 proven. 1187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:10:18,032 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:10:18,032 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603187479] [2021-06-05 08:10:18,032 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603187479] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:10:18,032 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1167492079] [2021-06-05 08:10:18,032 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 530 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 530 with z3 -smt2 -in SMTLIB2_COMPLIANT=true Received shutdown request... [2021-06-05 08:10:18,106 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 08:10:18,107 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:10:18,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 39 conjunts are in the unsatisfiable core [2021-06-05 08:10:18,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:10:18,338 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable534,530 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:10:18,338 WARN L547 AbstractCegarLoop]: Verification canceled [2021-06-05 08:10:18,342 INFO L246 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-05 08:10:18,344 WARN L196 ceAbstractionStarter]: Timeout [2021-06-05 08:10:18,344 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.06 08:10:18 BasicIcfg [2021-06-05 08:10:18,345 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-05 08:10:18,345 INFO L168 Benchmark]: Toolchain (without parser) took 777656.51 ms. Allocated memory was 367.0 MB in the beginning and 1.4 GB in the end (delta: 1.1 GB). Free memory was 330.3 MB in the beginning and 921.8 MB in the end (delta: -591.5 MB). Peak memory consumption was 476.1 MB. Max. memory is 16.0 GB. [2021-06-05 08:10:18,345 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 367.0 MB. Free memory is still 347.9 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 08:10:18,345 INFO L168 Benchmark]: CACSL2BoogieTranslator took 483.40 ms. Allocated memory is still 367.0 MB. Free memory was 330.1 MB in the beginning and 332.3 MB in the end (delta: -2.2 MB). Peak memory consumption was 9.1 MB. Max. memory is 16.0 GB. [2021-06-05 08:10:18,345 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.23 ms. Allocated memory is still 367.0 MB. Free memory was 332.3 MB in the beginning and 330.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-05 08:10:18,345 INFO L168 Benchmark]: Boogie Preprocessor took 18.16 ms. Allocated memory is still 367.0 MB. Free memory was 330.2 MB in the beginning and 329.1 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-05 08:10:18,346 INFO L168 Benchmark]: RCFGBuilder took 286.99 ms. Allocated memory is still 367.0 MB. Free memory was 329.1 MB in the beginning and 306.1 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-06-05 08:10:18,346 INFO L168 Benchmark]: TraceAbstraction took 776827.54 ms. Allocated memory was 367.0 MB in the beginning and 1.4 GB in the end (delta: 1.1 GB). Free memory was 305.0 MB in the beginning and 921.8 MB in the end (delta: -616.8 MB). Peak memory consumption was 451.7 MB. Max. memory is 16.0 GB. [2021-06-05 08:10:18,346 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 367.0 MB. Free memory is still 347.9 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 483.40 ms. Allocated memory is still 367.0 MB. Free memory was 330.1 MB in the beginning and 332.3 MB in the end (delta: -2.2 MB). Peak memory consumption was 9.1 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 30.23 ms. Allocated memory is still 367.0 MB. Free memory was 332.3 MB in the beginning and 330.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 18.16 ms. Allocated memory is still 367.0 MB. Free memory was 330.2 MB in the beginning and 329.1 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 286.99 ms. Allocated memory is still 367.0 MB. Free memory was 329.1 MB in the beginning and 306.1 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 776827.54 ms. Allocated memory was 367.0 MB in the beginning and 1.4 GB in the end (delta: 1.1 GB). Free memory was 305.0 MB in the beginning and 921.8 MB in the end (delta: -616.8 MB). Peak memory consumption was 451.7 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 713]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 196 with TraceHistMax 17,while TraceCheckSpWp was constructing forward predicates,while QuantifierPusher was running 1 iterations of DualJunctionQuantifierElimination. - TimeoutResultAtElement [Line: 714]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 196 with TraceHistMax 17,while TraceCheckSpWp was constructing forward predicates,while QuantifierPusher was running 1 iterations of DualJunctionQuantifierElimination. - TimeoutResultAtElement [Line: 722]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was analyzing trace of length 196 with TraceHistMax 17,while TraceCheckSpWp was constructing forward predicates,while QuantifierPusher was running 1 iterations of DualJunctionQuantifierElimination. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 84 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 776701.9ms, OverallIterations: 535, TraceHistogramMax: 17, EmptinessCheckTime: 1800.5ms, AutomataDifference: 390357.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 107.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 51761 SDtfs, 642954 SDslu, 570247 SDs, 0 SdLazy, 104966 SolverSat, 110470 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 62971.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 106590 GetRequests, 73500 SyntacticMatches, 0 SemanticMatches, 33090 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 564345 ImplicationChecksByTransitivity, 393165.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=6453occurred in iteration=532, InterpolantAutomatonStates: 23171, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 26018.6ms AutomataMinimizationTime, 534 MinimizatonAttempts, 652249 StatesRemovedByMinimization, 534 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 5838.2ms SsaConstructionTime, 17521.8ms SatisfiabilityAnalysisTime, 210490.4ms InterpolantComputationTime, 147098 NumberOfCodeBlocks, 147098 NumberOfCodeBlocksAsserted, 4055 NumberOfCheckSat, 146036 ConstructedInterpolants, 0 QuantifiedInterpolants, 639986 SizeOfPredicates, 12062 NumberOfNonLiveVariables, 142840 ConjunctsInSsa, 14703 ConjunctsInUnsatCore, 1062 InterpolantComputations, 6 PerfectInterpolantSequences, 1/583952 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