java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/elevator_spec1_product01.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 19:20:20,711 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 19:20:20,713 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 19:20:20,731 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 19:20:20,732 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 19:20:20,734 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 19:20:20,736 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 19:20:20,748 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 19:20:20,751 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 19:20:20,753 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 19:20:20,754 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 19:20:20,757 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 19:20:20,757 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 19:20:20,760 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 19:20:20,761 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 19:20:20,762 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 19:20:20,763 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 19:20:20,764 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 19:20:20,765 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 19:20:20,767 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 19:20:20,769 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 19:20:20,770 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 19:20:20,771 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 19:20:20,772 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 19:20:20,775 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 19:20:20,776 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 19:20:20,776 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 19:20:20,777 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 19:20:20,778 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 19:20:20,780 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 19:20:20,780 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 19:20:20,781 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 19:20:20,782 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 19:20:20,783 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 19:20:20,784 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 19:20:20,784 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 19:20:20,785 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 19:20:20,785 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 19:20:20,785 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 19:20:20,786 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 19:20:20,787 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 19:20:20,788 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 19:20:20,804 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 19:20:20,804 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 19:20:20,805 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 19:20:20,805 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 19:20:20,806 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 19:20:20,806 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 19:20:20,806 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 19:20:20,806 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 19:20:20,806 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 19:20:20,807 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 19:20:20,807 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 19:20:20,807 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 19:20:20,807 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 19:20:20,807 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 19:20:20,808 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 19:20:20,808 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 19:20:20,808 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 19:20:20,808 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 19:20:20,808 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 19:20:20,809 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 19:20:20,809 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 19:20:20,809 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:20:20,809 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 19:20:20,809 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 19:20:20,810 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 19:20:20,810 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 19:20:20,810 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 19:20:20,810 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 19:20:20,810 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-13 19:20:21,125 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 19:20:21,146 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 19:20:21,150 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 19:20:21,151 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 19:20:21,152 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 19:20:21,152 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec1_product01.cil.c [2019-10-13 19:20:21,215 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f9e0c04ca/3935ea481b4b44919d85513a5bd9a6e4/FLAG7e6b43664 [2019-10-13 19:20:21,880 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 19:20:21,881 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec1_product01.cil.c [2019-10-13 19:20:21,917 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f9e0c04ca/3935ea481b4b44919d85513a5bd9a6e4/FLAG7e6b43664 [2019-10-13 19:20:22,042 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f9e0c04ca/3935ea481b4b44919d85513a5bd9a6e4 [2019-10-13 19:20:22,053 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 19:20:22,055 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 19:20:22,056 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 19:20:22,056 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 19:20:22,059 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 19:20:22,061 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:20:22" (1/1) ... [2019-10-13 19:20:22,064 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47dba115 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:20:22, skipping insertion in model container [2019-10-13 19:20:22,065 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:20:22" (1/1) ... [2019-10-13 19:20:22,073 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 19:20:22,161 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 19:20:22,836 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:20:22,853 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 19:20:23,027 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:20:23,118 INFO L192 MainTranslator]: Completed translation [2019-10-13 19:20:23,119 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:20:23 WrapperNode [2019-10-13 19:20:23,120 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 19:20:23,121 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 19:20:23,121 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 19:20:23,121 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 19:20:23,139 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:20:23" (1/1) ... [2019-10-13 19:20:23,139 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:20:23" (1/1) ... [2019-10-13 19:20:23,181 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:20:23" (1/1) ... [2019-10-13 19:20:23,182 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:20:23" (1/1) ... [2019-10-13 19:20:23,241 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:20:23" (1/1) ... [2019-10-13 19:20:23,274 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:20:23" (1/1) ... [2019-10-13 19:20:23,284 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:20:23" (1/1) ... [2019-10-13 19:20:23,306 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 19:20:23,309 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 19:20:23,310 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 19:20:23,310 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 19:20:23,311 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:20:23" (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 [2019-10-13 19:20:23,390 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 19:20:23,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 19:20:23,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 19:20:23,391 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 19:20:23,391 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-13 19:20:23,392 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-13 19:20:23,392 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-13 19:20:23,393 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-13 19:20:23,393 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-13 19:20:23,393 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-13 19:20:23,393 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-13 19:20:23,394 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-13 19:20:23,394 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-13 19:20:23,395 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-13 19:20:23,396 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-13 19:20:23,396 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-13 19:20:23,398 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-13 19:20:23,398 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-13 19:20:23,399 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-13 19:20:23,399 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-13 19:20:23,399 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-13 19:20:23,399 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-13 19:20:23,399 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-13 19:20:23,400 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-13 19:20:23,400 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 19:20:23,400 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-13 19:20:23,400 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-13 19:20:23,401 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-13 19:20:23,401 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-13 19:20:23,401 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-13 19:20:23,401 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-13 19:20:23,401 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-13 19:20:23,402 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-13 19:20:23,402 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-13 19:20:23,402 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-13 19:20:23,402 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 19:20:23,402 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-13 19:20:23,403 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-13 19:20:23,403 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-13 19:20:23,403 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 19:20:23,403 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-13 19:20:23,403 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 19:20:23,404 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 19:20:23,404 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 19:20:23,404 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-13 19:20:23,404 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-13 19:20:23,404 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-13 19:20:23,405 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-13 19:20:23,405 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-13 19:20:23,405 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-13 19:20:23,405 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-13 19:20:23,405 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-13 19:20:23,406 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 19:20:23,406 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 19:20:23,406 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 19:20:23,406 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 19:20:23,406 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 19:20:23,407 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 19:20:23,407 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 19:20:23,409 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-13 19:20:23,409 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-13 19:20:23,409 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-13 19:20:23,410 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-13 19:20:23,410 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-13 19:20:23,410 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 19:20:23,411 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 19:20:23,411 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 19:20:23,411 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 19:20:23,411 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2019-10-13 19:20:23,412 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__2 [2019-10-13 19:20:23,412 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__3 [2019-10-13 19:20:23,412 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__4 [2019-10-13 19:20:23,412 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 19:20:23,413 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 19:20:23,413 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 19:20:23,414 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 19:20:23,414 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-13 19:20:23,414 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-13 19:20:23,414 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-13 19:20:23,414 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-13 19:20:23,414 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-13 19:20:23,415 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-13 19:20:23,415 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-13 19:20:23,416 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-13 19:20:23,416 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 19:20:23,416 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-13 19:20:23,416 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-13 19:20:23,416 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-13 19:20:23,416 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-13 19:20:23,417 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-13 19:20:23,417 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-13 19:20:23,418 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-13 19:20:23,418 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-13 19:20:23,418 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-13 19:20:23,418 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-13 19:20:23,419 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-13 19:20:23,419 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-13 19:20:23,419 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-13 19:20:23,419 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-13 19:20:23,419 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-13 19:20:23,419 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-13 19:20:23,420 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-13 19:20:23,420 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-13 19:20:23,420 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-13 19:20:23,420 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-13 19:20:23,420 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__3 [2019-10-13 19:20:23,421 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 19:20:23,421 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-13 19:20:23,421 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 19:20:23,421 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-13 19:20:23,421 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-13 19:20:23,421 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-13 19:20:23,422 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-13 19:20:23,422 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-13 19:20:23,422 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-13 19:20:23,422 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-13 19:20:23,422 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-13 19:20:23,423 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-13 19:20:23,423 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-13 19:20:23,423 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 19:20:23,424 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-13 19:20:23,424 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-13 19:20:23,424 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-13 19:20:23,424 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 19:20:23,424 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-13 19:20:23,425 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 19:20:23,425 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2019-10-13 19:20:23,425 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__4 [2019-10-13 19:20:23,425 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 19:20:23,425 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 19:20:23,425 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 19:20:23,426 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 19:20:23,426 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 19:20:23,426 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 19:20:23,426 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-13 19:20:23,426 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__2 [2019-10-13 19:20:23,427 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 19:20:23,427 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 19:20:23,427 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 19:20:23,427 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 19:20:23,427 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 19:20:23,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 19:20:23,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 19:20:23,428 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 19:20:23,428 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 19:20:23,428 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 19:20:23,429 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 19:20:23,429 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 19:20:23,429 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 19:20:23,429 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 19:20:23,429 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 19:20:23,429 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 19:20:23,430 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-13 19:20:23,430 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-13 19:20:23,430 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-13 19:20:23,430 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 19:20:23,430 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 19:20:23,430 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 19:20:23,431 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 19:20:25,722 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 19:20:25,722 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-13 19:20:25,724 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:20:25 BoogieIcfgContainer [2019-10-13 19:20:25,724 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 19:20:25,726 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 19:20:25,726 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 19:20:25,729 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 19:20:25,729 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:20:22" (1/3) ... [2019-10-13 19:20:25,730 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46748064 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:20:25, skipping insertion in model container [2019-10-13 19:20:25,730 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:20:23" (2/3) ... [2019-10-13 19:20:25,731 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46748064 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:20:25, skipping insertion in model container [2019-10-13 19:20:25,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:20:25" (3/3) ... [2019-10-13 19:20:25,733 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product01.cil.c [2019-10-13 19:20:25,743 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 19:20:25,753 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 19:20:25,765 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 19:20:25,813 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 19:20:25,813 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 19:20:25,813 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 19:20:25,813 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 19:20:25,813 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 19:20:25,813 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 19:20:25,813 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 19:20:25,813 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 19:20:25,856 INFO L276 IsEmpty]: Start isEmpty. Operand 722 states. [2019-10-13 19:20:25,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2019-10-13 19:20:25,888 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:20:25,889 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:20:25,891 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:20:25,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:20:25,898 INFO L82 PathProgramCache]: Analyzing trace with hash -1026623827, now seen corresponding path program 1 times [2019-10-13 19:20:25,907 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:20:25,907 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593163248] [2019-10-13 19:20:25,908 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:20:25,908 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:20:25,908 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:20:26,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:27,426 WARN L191 SmtUtils]: Spent 948.00 ms on a formula simplification that was a NOOP. DAG size: 382 [2019-10-13 19:20:27,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:27,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:27,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:27,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:27,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:27,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:27,714 WARN L191 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2019-10-13 19:20:27,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:28,005 WARN L191 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-13 19:20:28,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:28,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:28,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:28,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:28,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:28,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:28,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:28,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:28,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:28,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:28,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:28,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:28,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:28,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:28,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:28,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:28,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:28,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:28,432 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-13 19:20:28,434 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593163248] [2019-10-13 19:20:28,435 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1179114399] [2019-10-13 19:20:28,435 INFO L94 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 [2019-10-13 19:20:28,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:29,002 INFO L256 TraceCheckSpWp]: Trace formula consists of 3175 conjuncts, 1 conjunts are in the unsatisfiable core [2019-10-13 19:20:29,024 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:20:29,074 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-13 19:20:29,075 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:20:29,075 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [10] total 10 [2019-10-13 19:20:29,075 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319923745] [2019-10-13 19:20:29,084 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 19:20:29,084 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:20:29,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 19:20:29,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2019-10-13 19:20:29,102 INFO L87 Difference]: Start difference. First operand 722 states. Second operand 2 states. [2019-10-13 19:20:29,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:20:29,221 INFO L93 Difference]: Finished difference Result 605 states and 974 transitions. [2019-10-13 19:20:29,221 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 19:20:29,224 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 138 [2019-10-13 19:20:29,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:20:29,260 INFO L225 Difference]: With dead ends: 605 [2019-10-13 19:20:29,260 INFO L226 Difference]: Without dead ends: 568 [2019-10-13 19:20:29,265 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2019-10-13 19:20:29,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2019-10-13 19:20:29,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 568. [2019-10-13 19:20:29,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 568 states. [2019-10-13 19:20:29,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 919 transitions. [2019-10-13 19:20:29,388 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 919 transitions. Word has length 138 [2019-10-13 19:20:29,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:20:29,390 INFO L462 AbstractCegarLoop]: Abstraction has 568 states and 919 transitions. [2019-10-13 19:20:29,391 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 19:20:29,391 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 919 transitions. [2019-10-13 19:20:29,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2019-10-13 19:20:29,402 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:20:29,402 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:20:29,603 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:20:29,607 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:20:29,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:20:29,607 INFO L82 PathProgramCache]: Analyzing trace with hash -1495130976, now seen corresponding path program 1 times [2019-10-13 19:20:29,608 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:20:29,608 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788258701] [2019-10-13 19:20:29,608 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:20:29,608 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:20:29,608 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:20:29,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:30,706 WARN L191 SmtUtils]: Spent 853.00 ms on a formula simplification that was a NOOP. DAG size: 382 [2019-10-13 19:20:30,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:30,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:30,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:30,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:30,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:30,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:30,997 WARN L191 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2019-10-13 19:20:31,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:31,248 WARN L191 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-13 19:20:31,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:31,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:31,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:31,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:31,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:31,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:31,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:31,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:31,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:31,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:31,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:31,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:31,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:31,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:31,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:31,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:31,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:31,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:31,649 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-13 19:20:31,649 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788258701] [2019-10-13 19:20:31,650 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1629807294] [2019-10-13 19:20:31,650 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2019-10-13 19:20:32,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:32,191 INFO L256 TraceCheckSpWp]: Trace formula consists of 3178 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:20:32,205 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:20:32,280 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-13 19:20:32,281 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:20:32,281 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2019-10-13 19:20:32,281 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733548222] [2019-10-13 19:20:32,283 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:20:32,283 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:20:32,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:20:32,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:20:32,284 INFO L87 Difference]: Start difference. First operand 568 states and 919 transitions. Second operand 4 states. [2019-10-13 19:20:32,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:20:32,435 INFO L93 Difference]: Finished difference Result 1108 states and 1811 transitions. [2019-10-13 19:20:32,435 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 19:20:32,435 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 140 [2019-10-13 19:20:32,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:20:32,441 INFO L225 Difference]: With dead ends: 1108 [2019-10-13 19:20:32,441 INFO L226 Difference]: Without dead ends: 568 [2019-10-13 19:20:32,449 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2019-10-13 19:20:32,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2019-10-13 19:20:32,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 568. [2019-10-13 19:20:32,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 568 states. [2019-10-13 19:20:32,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 918 transitions. [2019-10-13 19:20:32,487 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 918 transitions. Word has length 140 [2019-10-13 19:20:32,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:20:32,488 INFO L462 AbstractCegarLoop]: Abstraction has 568 states and 918 transitions. [2019-10-13 19:20:32,488 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:20:32,488 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 918 transitions. [2019-10-13 19:20:32,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2019-10-13 19:20:32,493 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:20:32,493 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:20:32,708 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:20:32,709 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:20:32,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:20:32,710 INFO L82 PathProgramCache]: Analyzing trace with hash 983966334, now seen corresponding path program 1 times [2019-10-13 19:20:32,710 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:20:32,710 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151841211] [2019-10-13 19:20:32,711 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:20:32,711 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:20:32,711 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:20:32,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:33,709 WARN L191 SmtUtils]: Spent 886.00 ms on a formula simplification that was a NOOP. DAG size: 382 [2019-10-13 19:20:33,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:33,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:33,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:33,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:33,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:33,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:33,957 WARN L191 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2019-10-13 19:20:33,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:34,127 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-13 19:20:34,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:34,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:34,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:34,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:34,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:34,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:34,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:34,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:34,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:34,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:34,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:34,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:34,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:34,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:34,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:34,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:34,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:34,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:34,585 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-13 19:20:34,585 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151841211] [2019-10-13 19:20:34,586 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1372616154] [2019-10-13 19:20:34,587 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2019-10-13 19:20:35,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:35,135 INFO L256 TraceCheckSpWp]: Trace formula consists of 3180 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:20:35,142 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:20:35,198 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-13 19:20:35,198 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:20:35,198 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2019-10-13 19:20:35,199 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710448471] [2019-10-13 19:20:35,200 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:20:35,200 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:20:35,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:20:35,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:20:35,201 INFO L87 Difference]: Start difference. First operand 568 states and 918 transitions. Second operand 4 states. [2019-10-13 19:20:35,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:20:35,292 INFO L93 Difference]: Finished difference Result 1108 states and 1809 transitions. [2019-10-13 19:20:35,292 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 19:20:35,293 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 142 [2019-10-13 19:20:35,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:20:35,300 INFO L225 Difference]: With dead ends: 1108 [2019-10-13 19:20:35,300 INFO L226 Difference]: Without dead ends: 568 [2019-10-13 19:20:35,303 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2019-10-13 19:20:35,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2019-10-13 19:20:35,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 568. [2019-10-13 19:20:35,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 568 states. [2019-10-13 19:20:35,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 917 transitions. [2019-10-13 19:20:35,354 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 917 transitions. Word has length 142 [2019-10-13 19:20:35,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:20:35,355 INFO L462 AbstractCegarLoop]: Abstraction has 568 states and 917 transitions. [2019-10-13 19:20:35,355 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:20:35,356 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 917 transitions. [2019-10-13 19:20:35,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2019-10-13 19:20:35,361 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:20:35,361 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:20:35,568 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:20:35,569 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:20:35,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:20:35,569 INFO L82 PathProgramCache]: Analyzing trace with hash 491565736, now seen corresponding path program 1 times [2019-10-13 19:20:35,569 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:20:35,570 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178202430] [2019-10-13 19:20:35,570 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:20:35,571 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:20:35,571 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:20:35,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:36,520 WARN L191 SmtUtils]: Spent 853.00 ms on a formula simplification that was a NOOP. DAG size: 382 [2019-10-13 19:20:36,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:36,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:36,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:36,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:36,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:36,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:36,795 WARN L191 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2019-10-13 19:20:36,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:37,018 WARN L191 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-13 19:20:37,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:37,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:37,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:37,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:37,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:37,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:37,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:37,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:37,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:37,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:37,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:37,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:37,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:37,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:37,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:37,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:37,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:37,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:37,491 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-13 19:20:37,492 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178202430] [2019-10-13 19:20:37,492 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1567474683] [2019-10-13 19:20:37,492 INFO L94 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 [2019-10-13 19:20:38,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:38,020 INFO L256 TraceCheckSpWp]: Trace formula consists of 3182 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:20:38,026 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:20:38,075 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-13 19:20:38,075 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:20:38,076 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2019-10-13 19:20:38,076 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290334469] [2019-10-13 19:20:38,079 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:20:38,079 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:20:38,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:20:38,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:20:38,080 INFO L87 Difference]: Start difference. First operand 568 states and 917 transitions. Second operand 4 states. [2019-10-13 19:20:38,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:20:38,184 INFO L93 Difference]: Finished difference Result 1115 states and 1816 transitions. [2019-10-13 19:20:38,185 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:20:38,185 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 144 [2019-10-13 19:20:38,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:20:38,191 INFO L225 Difference]: With dead ends: 1115 [2019-10-13 19:20:38,191 INFO L226 Difference]: Without dead ends: 577 [2019-10-13 19:20:38,195 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2019-10-13 19:20:38,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2019-10-13 19:20:38,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 577. [2019-10-13 19:20:38,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 577 states. [2019-10-13 19:20:38,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 929 transitions. [2019-10-13 19:20:38,230 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 929 transitions. Word has length 144 [2019-10-13 19:20:38,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:20:38,231 INFO L462 AbstractCegarLoop]: Abstraction has 577 states and 929 transitions. [2019-10-13 19:20:38,231 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:20:38,231 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 929 transitions. [2019-10-13 19:20:38,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2019-10-13 19:20:38,237 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:20:38,237 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:20:38,445 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:20:38,445 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:20:38,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:20:38,446 INFO L82 PathProgramCache]: Analyzing trace with hash -1278076607, now seen corresponding path program 1 times [2019-10-13 19:20:38,447 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:20:38,447 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923754762] [2019-10-13 19:20:38,448 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:20:38,448 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:20:38,448 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:20:38,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:39,343 WARN L191 SmtUtils]: Spent 803.00 ms on a formula simplification that was a NOOP. DAG size: 382 [2019-10-13 19:20:39,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:39,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:39,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:39,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:39,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:39,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:39,590 WARN L191 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2019-10-13 19:20:39,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:39,742 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-13 19:20:39,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:39,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:39,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:39,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:39,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:39,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:39,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:39,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:39,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:39,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:39,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:39,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:39,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:39,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:39,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:39,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:39,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:39,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:40,060 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-13 19:20:40,061 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923754762] [2019-10-13 19:20:40,061 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [378391162] [2019-10-13 19:20:40,061 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2019-10-13 19:20:40,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:40,573 INFO L256 TraceCheckSpWp]: Trace formula consists of 3183 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:20:40,580 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:20:40,641 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-13 19:20:40,641 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:20:40,641 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2019-10-13 19:20:40,642 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808220568] [2019-10-13 19:20:40,642 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:20:40,642 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:20:40,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:20:40,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:20:40,643 INFO L87 Difference]: Start difference. First operand 577 states and 929 transitions. Second operand 4 states. [2019-10-13 19:20:40,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:20:40,733 INFO L93 Difference]: Finished difference Result 1117 states and 1817 transitions. [2019-10-13 19:20:40,734 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:20:40,734 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 145 [2019-10-13 19:20:40,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:20:40,742 INFO L225 Difference]: With dead ends: 1117 [2019-10-13 19:20:40,742 INFO L226 Difference]: Without dead ends: 577 [2019-10-13 19:20:40,747 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2019-10-13 19:20:40,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2019-10-13 19:20:40,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 577. [2019-10-13 19:20:40,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 577 states. [2019-10-13 19:20:40,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 928 transitions. [2019-10-13 19:20:40,784 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 928 transitions. Word has length 145 [2019-10-13 19:20:40,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:20:40,784 INFO L462 AbstractCegarLoop]: Abstraction has 577 states and 928 transitions. [2019-10-13 19:20:40,785 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:20:40,785 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 928 transitions. [2019-10-13 19:20:40,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2019-10-13 19:20:40,792 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:20:40,792 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:20:41,060 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:20:41,061 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:20:41,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:20:41,062 INFO L82 PathProgramCache]: Analyzing trace with hash 697827020, now seen corresponding path program 1 times [2019-10-13 19:20:41,062 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:20:41,062 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311232985] [2019-10-13 19:20:41,063 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:20:41,063 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:20:41,064 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:20:41,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:42,170 WARN L191 SmtUtils]: Spent 990.00 ms on a formula simplification that was a NOOP. DAG size: 382 [2019-10-13 19:20:42,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:42,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:42,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:42,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:42,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:42,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:42,438 WARN L191 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2019-10-13 19:20:42,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:42,602 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-13 19:20:42,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:42,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:42,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:42,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:42,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:42,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:42,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:42,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:42,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:42,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:42,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:42,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:42,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:42,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:42,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:42,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:42,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:42,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:42,864 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-13 19:20:42,864 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311232985] [2019-10-13 19:20:42,865 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [938583265] [2019-10-13 19:20:42,865 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2019-10-13 19:20:43,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:43,443 INFO L256 TraceCheckSpWp]: Trace formula consists of 3184 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:20:43,455 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:20:43,523 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-13 19:20:43,524 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:20:43,524 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2019-10-13 19:20:43,524 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775311158] [2019-10-13 19:20:43,525 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:20:43,525 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:20:43,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:20:43,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:20:43,526 INFO L87 Difference]: Start difference. First operand 577 states and 928 transitions. Second operand 4 states. [2019-10-13 19:20:43,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:20:43,611 INFO L93 Difference]: Finished difference Result 1117 states and 1816 transitions. [2019-10-13 19:20:43,612 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:20:43,612 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 146 [2019-10-13 19:20:43,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:20:43,616 INFO L225 Difference]: With dead ends: 1117 [2019-10-13 19:20:43,617 INFO L226 Difference]: Without dead ends: 577 [2019-10-13 19:20:43,620 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2019-10-13 19:20:43,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2019-10-13 19:20:43,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 577. [2019-10-13 19:20:43,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 577 states. [2019-10-13 19:20:43,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 927 transitions. [2019-10-13 19:20:43,641 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 927 transitions. Word has length 146 [2019-10-13 19:20:43,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:20:43,642 INFO L462 AbstractCegarLoop]: Abstraction has 577 states and 927 transitions. [2019-10-13 19:20:43,642 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:20:43,642 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 927 transitions. [2019-10-13 19:20:43,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2019-10-13 19:20:43,646 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:20:43,646 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:20:43,862 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:20:43,863 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:20:43,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:20:43,863 INFO L82 PathProgramCache]: Analyzing trace with hash -1473428571, now seen corresponding path program 1 times [2019-10-13 19:20:43,863 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:20:43,864 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989906753] [2019-10-13 19:20:43,864 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:20:43,864 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:20:43,864 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:20:43,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:44,746 WARN L191 SmtUtils]: Spent 754.00 ms on a formula simplification that was a NOOP. DAG size: 382 [2019-10-13 19:20:44,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:44,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:44,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:44,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:44,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:44,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:44,997 WARN L191 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2019-10-13 19:20:45,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:45,181 WARN L191 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-13 19:20:45,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:45,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:45,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:45,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:45,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:45,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:45,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:45,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:45,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:45,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:45,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:45,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:45,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:45,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:45,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:45,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:45,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:45,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:45,630 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-13 19:20:45,630 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989906753] [2019-10-13 19:20:45,630 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [912981340] [2019-10-13 19:20:45,630 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:20:46,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:46,175 INFO L256 TraceCheckSpWp]: Trace formula consists of 3185 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-13 19:20:46,179 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:20:46,322 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:20:46,322 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:20:46,322 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [16] total 21 [2019-10-13 19:20:46,325 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655148028] [2019-10-13 19:20:46,326 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 19:20:46,326 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:20:46,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 19:20:46,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=364, Unknown=0, NotChecked=0, Total=420 [2019-10-13 19:20:46,327 INFO L87 Difference]: Start difference. First operand 577 states and 927 transitions. Second operand 7 states. [2019-10-13 19:20:46,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:20:46,508 INFO L93 Difference]: Finished difference Result 1124 states and 1825 transitions. [2019-10-13 19:20:46,509 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 19:20:46,509 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 147 [2019-10-13 19:20:46,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:20:46,514 INFO L225 Difference]: With dead ends: 1124 [2019-10-13 19:20:46,515 INFO L226 Difference]: Without dead ends: 588 [2019-10-13 19:20:46,518 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=60, Invalid=402, Unknown=0, NotChecked=0, Total=462 [2019-10-13 19:20:46,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2019-10-13 19:20:46,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 584. [2019-10-13 19:20:46,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 584 states. [2019-10-13 19:20:46,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 584 states to 584 states and 937 transitions. [2019-10-13 19:20:46,549 INFO L78 Accepts]: Start accepts. Automaton has 584 states and 937 transitions. Word has length 147 [2019-10-13 19:20:46,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:20:46,550 INFO L462 AbstractCegarLoop]: Abstraction has 584 states and 937 transitions. [2019-10-13 19:20:46,550 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 19:20:46,551 INFO L276 IsEmpty]: Start isEmpty. Operand 584 states and 937 transitions. [2019-10-13 19:20:46,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2019-10-13 19:20:46,555 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:20:46,555 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:20:46,763 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:20:46,764 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:20:46,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:20:46,764 INFO L82 PathProgramCache]: Analyzing trace with hash 1997857254, now seen corresponding path program 1 times [2019-10-13 19:20:46,764 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:20:46,764 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749791886] [2019-10-13 19:20:46,765 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:20:46,765 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:20:46,765 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:20:46,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:47,697 WARN L191 SmtUtils]: Spent 827.00 ms on a formula simplification that was a NOOP. DAG size: 382 [2019-10-13 19:20:47,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:47,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:47,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:47,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:47,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:47,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:47,947 WARN L191 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2019-10-13 19:20:47,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:48,100 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-13 19:20:48,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:48,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:48,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:48,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:48,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:48,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:48,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:48,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:48,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:48,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:48,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:48,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:48,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:48,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:48,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:48,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:48,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:48,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:48,407 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-13 19:20:48,407 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749791886] [2019-10-13 19:20:48,408 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1150363047] [2019-10-13 19:20:48,408 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:20:48,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:48,900 INFO L256 TraceCheckSpWp]: Trace formula consists of 3184 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:20:48,904 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:20:48,948 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:20:48,949 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:20:48,949 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2019-10-13 19:20:48,949 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261157212] [2019-10-13 19:20:48,952 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:20:48,953 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:20:48,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:20:48,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:20:48,953 INFO L87 Difference]: Start difference. First operand 584 states and 937 transitions. Second operand 4 states. [2019-10-13 19:20:49,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:20:49,126 INFO L93 Difference]: Finished difference Result 1129 states and 1836 transitions. [2019-10-13 19:20:49,126 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 19:20:49,126 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 147 [2019-10-13 19:20:49,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:20:49,132 INFO L225 Difference]: With dead ends: 1129 [2019-10-13 19:20:49,132 INFO L226 Difference]: Without dead ends: 584 [2019-10-13 19:20:49,135 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2019-10-13 19:20:49,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2019-10-13 19:20:49,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 584. [2019-10-13 19:20:49,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 584 states. [2019-10-13 19:20:49,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 584 states to 584 states and 932 transitions. [2019-10-13 19:20:49,160 INFO L78 Accepts]: Start accepts. Automaton has 584 states and 932 transitions. Word has length 147 [2019-10-13 19:20:49,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:20:49,160 INFO L462 AbstractCegarLoop]: Abstraction has 584 states and 932 transitions. [2019-10-13 19:20:49,160 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:20:49,160 INFO L276 IsEmpty]: Start isEmpty. Operand 584 states and 932 transitions. [2019-10-13 19:20:49,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2019-10-13 19:20:49,164 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:20:49,165 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:20:49,376 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:20:49,376 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:20:49,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:20:49,377 INFO L82 PathProgramCache]: Analyzing trace with hash 358619992, now seen corresponding path program 1 times [2019-10-13 19:20:49,378 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:20:49,379 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994895317] [2019-10-13 19:20:49,379 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:20:49,379 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:20:49,380 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:20:49,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:50,426 WARN L191 SmtUtils]: Spent 970.00 ms on a formula simplification that was a NOOP. DAG size: 382 [2019-10-13 19:20:50,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:50,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:50,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:50,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:50,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:50,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:50,674 WARN L191 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2019-10-13 19:20:50,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:50,843 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-13 19:20:50,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:50,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:50,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:50,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:50,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:50,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:50,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:50,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:50,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:50,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:50,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:50,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:50,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:50,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:50,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:51,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:51,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:51,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:51,112 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-13 19:20:51,113 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994895317] [2019-10-13 19:20:51,113 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [32665180] [2019-10-13 19:20:51,113 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2019-10-13 19:20:51,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:51,651 INFO L256 TraceCheckSpWp]: Trace formula consists of 3186 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:20:51,655 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:20:51,695 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:20:51,696 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:20:51,696 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2019-10-13 19:20:51,696 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083657161] [2019-10-13 19:20:51,697 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:20:51,697 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:20:51,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:20:51,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:20:51,698 INFO L87 Difference]: Start difference. First operand 584 states and 932 transitions. Second operand 4 states. [2019-10-13 19:20:51,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:20:51,913 INFO L93 Difference]: Finished difference Result 1129 states and 1826 transitions. [2019-10-13 19:20:51,913 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 19:20:51,914 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 149 [2019-10-13 19:20:51,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:20:51,919 INFO L225 Difference]: With dead ends: 1129 [2019-10-13 19:20:51,919 INFO L226 Difference]: Without dead ends: 584 [2019-10-13 19:20:51,923 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2019-10-13 19:20:51,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2019-10-13 19:20:51,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 584. [2019-10-13 19:20:51,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 584 states. [2019-10-13 19:20:51,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 584 states to 584 states and 927 transitions. [2019-10-13 19:20:51,947 INFO L78 Accepts]: Start accepts. Automaton has 584 states and 927 transitions. Word has length 149 [2019-10-13 19:20:51,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:20:51,948 INFO L462 AbstractCegarLoop]: Abstraction has 584 states and 927 transitions. [2019-10-13 19:20:51,948 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:20:51,948 INFO L276 IsEmpty]: Start isEmpty. Operand 584 states and 927 transitions. [2019-10-13 19:20:51,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2019-10-13 19:20:51,952 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:20:51,952 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:20:52,168 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:20:52,169 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:20:52,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:20:52,169 INFO L82 PathProgramCache]: Analyzing trace with hash 98069497, now seen corresponding path program 1 times [2019-10-13 19:20:52,170 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:20:52,170 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95516925] [2019-10-13 19:20:52,170 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:20:52,170 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:20:52,171 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:20:52,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:53,216 WARN L191 SmtUtils]: Spent 929.00 ms on a formula simplification that was a NOOP. DAG size: 382 [2019-10-13 19:20:53,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:53,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:53,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:53,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:53,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:53,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:53,472 WARN L191 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2019-10-13 19:20:53,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:53,651 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-13 19:20:53,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:53,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:53,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:53,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:53,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:53,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:53,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:53,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:53,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:53,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:53,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:53,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:53,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:53,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:53,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:53,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:53,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:53,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:54,080 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-10-13 19:20:54,081 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95516925] [2019-10-13 19:20:54,081 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1997581142] [2019-10-13 19:20:54,081 INFO L94 rtionOrderModulation]: Keeping assertion order 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 [2019-10-13 19:20:54,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:54,642 INFO L256 TraceCheckSpWp]: Trace formula consists of 3186 conjuncts, 9 conjunts are in the unsatisfiable core [2019-10-13 19:20:54,647 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:20:54,821 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:20:54,822 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:20:54,822 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [16] total 23 [2019-10-13 19:20:54,822 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503991102] [2019-10-13 19:20:54,823 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 19:20:54,823 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:20:54,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 19:20:54,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=447, Unknown=0, NotChecked=0, Total=506 [2019-10-13 19:20:54,824 INFO L87 Difference]: Start difference. First operand 584 states and 927 transitions. Second operand 9 states. [2019-10-13 19:20:55,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:20:55,076 INFO L93 Difference]: Finished difference Result 1131 states and 1815 transitions. [2019-10-13 19:20:55,076 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 19:20:55,077 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 152 [2019-10-13 19:20:55,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:20:55,082 INFO L225 Difference]: With dead ends: 1131 [2019-10-13 19:20:55,082 INFO L226 Difference]: Without dead ends: 592 [2019-10-13 19:20:55,086 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2019-10-13 19:20:55,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2019-10-13 19:20:55,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 586. [2019-10-13 19:20:55,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 586 states. [2019-10-13 19:20:55,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 586 states to 586 states and 930 transitions. [2019-10-13 19:20:55,115 INFO L78 Accepts]: Start accepts. Automaton has 586 states and 930 transitions. Word has length 152 [2019-10-13 19:20:55,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:20:55,115 INFO L462 AbstractCegarLoop]: Abstraction has 586 states and 930 transitions. [2019-10-13 19:20:55,115 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 19:20:55,115 INFO L276 IsEmpty]: Start isEmpty. Operand 586 states and 930 transitions. [2019-10-13 19:20:55,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2019-10-13 19:20:55,120 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:20:55,120 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:20:55,329 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:20:55,330 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:20:55,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:20:55,331 INFO L82 PathProgramCache]: Analyzing trace with hash -1125851172, now seen corresponding path program 1 times [2019-10-13 19:20:55,332 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:20:55,332 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136253461] [2019-10-13 19:20:55,332 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:20:55,333 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:20:55,333 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:20:55,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat