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_product20.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 19:20:55,477 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 19:20:55,480 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 19:20:55,492 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 19:20:55,493 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 19:20:55,494 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 19:20:55,495 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 19:20:55,497 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 19:20:55,499 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 19:20:55,500 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 19:20:55,501 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 19:20:55,505 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 19:20:55,505 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 19:20:55,506 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 19:20:55,507 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 19:20:55,509 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 19:20:55,510 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 19:20:55,511 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 19:20:55,512 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 19:20:55,515 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 19:20:55,516 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 19:20:55,517 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 19:20:55,518 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 19:20:55,519 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 19:20:55,521 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 19:20:55,521 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 19:20:55,522 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 19:20:55,523 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 19:20:55,523 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 19:20:55,524 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 19:20:55,524 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 19:20:55,525 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 19:20:55,526 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 19:20:55,526 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 19:20:55,527 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 19:20:55,528 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 19:20:55,528 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 19:20:55,529 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 19:20:55,529 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 19:20:55,530 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 19:20:55,530 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 19:20:55,531 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 19:20:55,545 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 19:20:55,545 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 19:20:55,546 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 19:20:55,547 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 19:20:55,547 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 19:20:55,547 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 19:20:55,547 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 19:20:55,547 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 19:20:55,548 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 19:20:55,548 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 19:20:55,548 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 19:20:55,548 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 19:20:55,549 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 19:20:55,549 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 19:20:55,549 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 19:20:55,549 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 19:20:55,549 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 19:20:55,550 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 19:20:55,550 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 19:20:55,550 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 19:20:55,550 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 19:20:55,550 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:20:55,551 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 19:20:55,551 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 19:20:55,551 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 19:20:55,551 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 19:20:55,552 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 19:20:55,552 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 19:20:55,552 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-13 19:20:55,846 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 19:20:55,860 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 19:20:55,863 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 19:20:55,865 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 19:20:55,865 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 19:20:55,866 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec1_product20.cil.c [2019-10-13 19:20:55,931 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc473e7e0/33ec33c1632f405bab4d4f1423b989f2/FLAGa4430ab0b [2019-10-13 19:20:56,594 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 19:20:56,595 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec1_product20.cil.c [2019-10-13 19:20:56,626 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc473e7e0/33ec33c1632f405bab4d4f1423b989f2/FLAGa4430ab0b [2019-10-13 19:20:56,781 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc473e7e0/33ec33c1632f405bab4d4f1423b989f2 [2019-10-13 19:20:56,792 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 19:20:56,794 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 19:20:56,796 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 19:20:56,796 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 19:20:56,800 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 19:20:56,801 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:20:56" (1/1) ... [2019-10-13 19:20:56,804 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54803c16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:20:56, skipping insertion in model container [2019-10-13 19:20:56,804 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:20:56" (1/1) ... [2019-10-13 19:20:56,813 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 19:20:56,910 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 19:20:57,698 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:20:57,725 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 19:20:57,895 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:20:57,998 INFO L192 MainTranslator]: Completed translation [2019-10-13 19:20:58,000 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:20:57 WrapperNode [2019-10-13 19:20:58,000 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 19:20:58,001 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 19:20:58,002 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 19:20:58,002 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 19:20:58,021 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:20:57" (1/1) ... [2019-10-13 19:20:58,021 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:20:57" (1/1) ... [2019-10-13 19:20:58,100 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:20:57" (1/1) ... [2019-10-13 19:20:58,100 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:20:57" (1/1) ... [2019-10-13 19:20:58,184 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:20:57" (1/1) ... [2019-10-13 19:20:58,222 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:20:57" (1/1) ... [2019-10-13 19:20:58,249 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:20:57" (1/1) ... [2019-10-13 19:20:58,273 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 19:20:58,274 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 19:20:58,274 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 19:20:58,275 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 19:20:58,276 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:20:57" (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 19:20:58,393 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 19:20:58,394 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 19:20:58,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 19:20:58,395 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-13 19:20:58,395 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-13 19:20:58,397 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-13 19:20:58,397 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-13 19:20:58,397 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-13 19:20:58,398 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-13 19:20:58,398 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-13 19:20:58,398 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-13 19:20:58,399 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-13 19:20:58,400 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-13 19:20:58,400 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-13 19:20:58,401 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-13 19:20:58,402 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-13 19:20:58,404 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-13 19:20:58,404 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-13 19:20:58,405 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-13 19:20:58,406 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2019-10-13 19:20:58,406 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-13 19:20:58,406 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-13 19:20:58,407 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-13 19:20:58,407 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-10-13 19:20:58,407 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-13 19:20:58,407 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-13 19:20:58,408 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-13 19:20:58,408 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2019-10-13 19:20:58,408 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 19:20:58,408 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__wrappee__executivefloor [2019-10-13 19:20:58,408 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-13 19:20:58,409 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-13 19:20:58,409 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-10-13 19:20:58,410 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-10-13 19:20:58,410 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 19:20:58,410 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 19:20:58,410 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 19:20:58,410 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 19:20:58,411 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 19:20:58,411 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 19:20:58,411 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 19:20:58,411 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 19:20:58,411 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 19:20:58,411 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 19:20:58,412 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 19:20:58,412 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 19:20:58,412 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-13 19:20:58,412 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-13 19:20:58,412 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-13 19:20:58,413 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-13 19:20:58,413 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-13 19:20:58,413 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-13 19:20:58,413 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-13 19:20:58,413 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-13 19:20:58,413 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-13 19:20:58,414 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-13 19:20:58,414 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-13 19:20:58,414 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-13 19:20:58,414 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-13 19:20:58,415 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-13 19:20:58,415 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-13 19:20:58,415 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-13 19:20:58,415 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-13 19:20:58,415 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-13 19:20:58,416 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 19:20:58,416 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-13 19:20:58,416 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-13 19:20:58,417 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-13 19:20:58,417 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 19:20:58,417 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-13 19:20:58,417 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 19:20:58,417 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 19:20:58,418 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 19:20:58,418 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2019-10-13 19:20:58,419 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__2 [2019-10-13 19:20:58,419 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__3 [2019-10-13 19:20:58,419 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__4 [2019-10-13 19:20:58,419 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-13 19:20:58,419 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-13 19:20:58,420 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-13 19:20:58,420 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 19:20:58,420 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 19:20:58,421 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 19:20:58,421 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-13 19:20:58,421 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-13 19:20:58,421 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-13 19:20:58,422 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-13 19:20:58,422 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-13 19:20:58,422 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-13 19:20:58,423 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-13 19:20:58,423 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-13 19:20:58,423 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-13 19:20:58,424 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 19:20:58,424 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-13 19:20:58,424 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-13 19:20:58,424 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-13 19:20:58,425 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-13 19:20:58,425 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-13 19:20:58,425 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-13 19:20:58,425 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-13 19:20:58,425 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-13 19:20:58,426 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-13 19:20:58,426 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-13 19:20:58,426 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-10-13 19:20:58,426 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-10-13 19:20:58,426 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-13 19:20:58,427 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-13 19:20:58,427 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-13 19:20:58,427 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-13 19:20:58,427 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-13 19:20:58,427 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-13 19:20:58,428 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-13 19:20:58,428 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2019-10-13 19:20:58,428 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-13 19:20:58,428 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-13 19:20:58,429 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-10-13 19:20:58,429 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-13 19:20:58,430 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-13 19:20:58,430 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-13 19:20:58,430 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2019-10-13 19:20:58,431 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__3 [2019-10-13 19:20:58,431 INFO L130 BoogieDeclarations]: Found specification of procedure printState__wrappee__executivefloor [2019-10-13 19:20:58,431 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 19:20:58,431 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-13 19:20:58,433 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 19:20:58,433 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 19:20:58,434 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 19:20:58,434 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 19:20:58,434 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 19:20:58,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 19:20:58,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 19:20:58,435 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 19:20:58,435 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 19:20:58,435 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 19:20:58,435 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 19:20:58,435 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 19:20:58,436 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 19:20:58,436 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 19:20:58,436 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 19:20:58,437 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 19:20:58,440 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-13 19:20:58,441 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-13 19:20:58,441 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 19:20:58,441 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 19:20:58,447 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 19:20:58,447 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 19:20:58,447 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 19:20:58,448 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 19:20:58,448 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 19:20:58,448 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-13 19:20:58,448 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-13 19:20:58,449 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-13 19:20:58,449 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-13 19:20:58,449 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-13 19:20:58,449 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__2 [2019-10-13 19:20:58,450 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 19:20:58,450 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-13 19:20:58,450 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-13 19:20:58,450 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-13 19:20:58,450 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-13 19:20:58,450 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-13 19:20:58,450 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-13 19:20:58,451 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-13 19:20:58,451 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-13 19:20:58,451 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-13 19:20:58,451 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 19:20:58,451 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-13 19:20:58,451 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 19:20:58,451 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2019-10-13 19:20:58,452 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__4 [2019-10-13 19:20:58,452 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 19:20:58,452 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 19:20:58,452 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 19:20:58,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 19:20:58,452 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 19:21:00,760 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 19:21:00,761 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-13 19:21:00,763 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:21:00 BoogieIcfgContainer [2019-10-13 19:21:00,763 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 19:21:00,766 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 19:21:00,767 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 19:21:00,770 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 19:21:00,770 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:20:56" (1/3) ... [2019-10-13 19:21:00,771 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a203e15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:21:00, skipping insertion in model container [2019-10-13 19:21:00,771 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:20:57" (2/3) ... [2019-10-13 19:21:00,771 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a203e15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:21:00, skipping insertion in model container [2019-10-13 19:21:00,772 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:21:00" (3/3) ... [2019-10-13 19:21:00,774 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product20.cil.c [2019-10-13 19:21:00,785 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 19:21:00,794 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 19:21:00,806 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 19:21:00,849 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 19:21:00,849 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 19:21:00,849 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 19:21:00,849 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 19:21:00,849 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 19:21:00,849 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 19:21:00,850 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 19:21:00,850 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 19:21:00,887 INFO L276 IsEmpty]: Start isEmpty. Operand 787 states. [2019-10-13 19:21:00,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2019-10-13 19:21:00,904 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:21:00,906 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] [2019-10-13 19:21:00,908 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:21:00,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:21:00,916 INFO L82 PathProgramCache]: Analyzing trace with hash 669576515, now seen corresponding path program 1 times [2019-10-13 19:21:00,926 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:21:00,926 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024086058] [2019-10-13 19:21:00,927 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:00,927 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:00,928 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:21:01,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:02,673 WARN L191 SmtUtils]: Spent 1.16 s on a formula simplification that was a NOOP. DAG size: 400 [2019-10-13 19:21:02,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:02,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:02,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:02,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:02,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:02,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:02,971 WARN L191 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-10-13 19:21:02,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:03,187 WARN L191 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-13 19:21:03,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:03,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:03,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:03,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:03,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:03,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:03,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:03,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:03,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:03,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:03,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:03,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:03,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:03,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:03,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:03,528 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 19:21:03,529 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024086058] [2019-10-13 19:21:03,529 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1679308552] [2019-10-13 19:21:03,530 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 19:21:04,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:04,145 INFO L256 TraceCheckSpWp]: Trace formula consists of 3176 conjuncts, 1 conjunts are in the unsatisfiable core [2019-10-13 19:21:04,161 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:21:04,194 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 19:21:04,195 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:21:04,195 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2019-10-13 19:21:04,195 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359383009] [2019-10-13 19:21:04,203 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 19:21:04,203 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:21:04,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 19:21:04,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-10-13 19:21:04,221 INFO L87 Difference]: Start difference. First operand 787 states. Second operand 2 states. [2019-10-13 19:21:04,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:21:04,358 INFO L93 Difference]: Finished difference Result 663 states and 1051 transitions. [2019-10-13 19:21:04,358 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 19:21:04,361 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 116 [2019-10-13 19:21:04,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:21:04,390 INFO L225 Difference]: With dead ends: 663 [2019-10-13 19:21:04,391 INFO L226 Difference]: Without dead ends: 626 [2019-10-13 19:21:04,396 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-10-13 19:21:04,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2019-10-13 19:21:04,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 626. [2019-10-13 19:21:04,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 626 states. [2019-10-13 19:21:04,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 996 transitions. [2019-10-13 19:21:04,517 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 996 transitions. Word has length 116 [2019-10-13 19:21:04,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:21:04,519 INFO L462 AbstractCegarLoop]: Abstraction has 626 states and 996 transitions. [2019-10-13 19:21:04,519 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 19:21:04,520 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 996 transitions. [2019-10-13 19:21:04,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2019-10-13 19:21:04,529 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:21:04,530 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] [2019-10-13 19:21:04,732 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:21:04,733 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:21:04,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:21:04,734 INFO L82 PathProgramCache]: Analyzing trace with hash 835424246, now seen corresponding path program 1 times [2019-10-13 19:21:04,734 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:21:04,735 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371237965] [2019-10-13 19:21:04,735 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:04,735 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:04,736 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:21:04,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:05,882 WARN L191 SmtUtils]: Spent 949.00 ms on a formula simplification that was a NOOP. DAG size: 400 [2019-10-13 19:21:05,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:05,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:05,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:05,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:05,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:05,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:06,149 WARN L191 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-10-13 19:21:06,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:06,316 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-13 19:21:06,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:06,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:06,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:06,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:06,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:06,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:06,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:06,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:06,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:06,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:06,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:06,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:06,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:06,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:06,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:06,625 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 19:21:06,625 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371237965] [2019-10-13 19:21:06,626 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1181030451] [2019-10-13 19:21:06,626 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 19:21:07,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:07,176 INFO L256 TraceCheckSpWp]: Trace formula consists of 3179 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:21:07,184 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:21:07,285 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 19:21:07,286 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:21:07,286 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2019-10-13 19:21:07,286 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076280565] [2019-10-13 19:21:07,288 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:21:07,289 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:21:07,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:21:07,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2019-10-13 19:21:07,290 INFO L87 Difference]: Start difference. First operand 626 states and 996 transitions. Second operand 4 states. [2019-10-13 19:21:07,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:21:07,436 INFO L93 Difference]: Finished difference Result 1224 states and 1965 transitions. [2019-10-13 19:21:07,436 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 19:21:07,437 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 118 [2019-10-13 19:21:07,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:21:07,444 INFO L225 Difference]: With dead ends: 1224 [2019-10-13 19:21:07,445 INFO L226 Difference]: Without dead ends: 626 [2019-10-13 19:21:07,453 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:21:07,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2019-10-13 19:21:07,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 626. [2019-10-13 19:21:07,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 626 states. [2019-10-13 19:21:07,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 995 transitions. [2019-10-13 19:21:07,522 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 995 transitions. Word has length 118 [2019-10-13 19:21:07,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:21:07,522 INFO L462 AbstractCegarLoop]: Abstraction has 626 states and 995 transitions. [2019-10-13 19:21:07,523 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:21:07,523 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 995 transitions. [2019-10-13 19:21:07,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-10-13 19:21:07,526 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:21:07,526 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] [2019-10-13 19:21:07,734 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:21:07,737 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:21:07,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:21:07,737 INFO L82 PathProgramCache]: Analyzing trace with hash 963635798, now seen corresponding path program 1 times [2019-10-13 19:21:07,738 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:21:07,738 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560843103] [2019-10-13 19:21:07,738 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:07,738 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:07,738 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:21:07,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:08,797 WARN L191 SmtUtils]: Spent 927.00 ms on a formula simplification that was a NOOP. DAG size: 400 [2019-10-13 19:21:08,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:08,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:08,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:08,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:08,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:08,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:09,061 WARN L191 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-10-13 19:21:09,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:09,221 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-13 19:21:09,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:09,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:09,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:09,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:09,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:09,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:09,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:09,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:09,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:09,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:09,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:09,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:09,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:09,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:09,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:09,642 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 19:21:09,643 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560843103] [2019-10-13 19:21:09,644 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [292727309] [2019-10-13 19:21:09,644 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 19:21:10,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:10,180 INFO L256 TraceCheckSpWp]: Trace formula consists of 3181 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:21:10,189 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:21:10,231 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 19:21:10,232 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:21:10,232 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2019-10-13 19:21:10,232 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831727625] [2019-10-13 19:21:10,233 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:21:10,233 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:21:10,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:21:10,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2019-10-13 19:21:10,234 INFO L87 Difference]: Start difference. First operand 626 states and 995 transitions. Second operand 4 states. [2019-10-13 19:21:10,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:21:10,323 INFO L93 Difference]: Finished difference Result 1224 states and 1963 transitions. [2019-10-13 19:21:10,323 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 19:21:10,324 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 120 [2019-10-13 19:21:10,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:21:10,330 INFO L225 Difference]: With dead ends: 1224 [2019-10-13 19:21:10,330 INFO L226 Difference]: Without dead ends: 626 [2019-10-13 19:21:10,334 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:21:10,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2019-10-13 19:21:10,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 626. [2019-10-13 19:21:10,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 626 states. [2019-10-13 19:21:10,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 994 transitions. [2019-10-13 19:21:10,369 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 994 transitions. Word has length 120 [2019-10-13 19:21:10,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:21:10,369 INFO L462 AbstractCegarLoop]: Abstraction has 626 states and 994 transitions. [2019-10-13 19:21:10,370 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:21:10,370 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 994 transitions. [2019-10-13 19:21:10,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2019-10-13 19:21:10,372 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:21:10,372 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] [2019-10-13 19:21:10,582 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:21:10,582 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:21:10,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:21:10,583 INFO L82 PathProgramCache]: Analyzing trace with hash 684702014, now seen corresponding path program 1 times [2019-10-13 19:21:10,584 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:21:10,584 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732169379] [2019-10-13 19:21:10,585 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:10,585 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:10,586 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:21:10,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:11,715 WARN L191 SmtUtils]: Spent 1.03 s on a formula simplification that was a NOOP. DAG size: 400 [2019-10-13 19:21:11,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:11,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:11,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:11,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:11,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:11,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:12,053 WARN L191 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-10-13 19:21:12,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:12,304 WARN L191 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-13 19:21:12,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:12,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:12,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:12,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:12,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:12,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:12,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:12,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:12,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:12,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:12,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:12,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:12,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:12,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:12,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:12,610 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 19:21:12,610 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732169379] [2019-10-13 19:21:12,610 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [218662622] [2019-10-13 19:21:12,610 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 19:21:13,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:13,165 INFO L256 TraceCheckSpWp]: Trace formula consists of 3183 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:21:13,185 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:21:13,236 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 19:21:13,236 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:21:13,236 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2019-10-13 19:21:13,236 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607943692] [2019-10-13 19:21:13,238 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:21:13,238 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:21:13,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:21:13,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2019-10-13 19:21:13,240 INFO L87 Difference]: Start difference. First operand 626 states and 994 transitions. Second operand 4 states. [2019-10-13 19:21:13,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:21:13,342 INFO L93 Difference]: Finished difference Result 1231 states and 1970 transitions. [2019-10-13 19:21:13,343 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:21:13,343 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 122 [2019-10-13 19:21:13,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:21:13,350 INFO L225 Difference]: With dead ends: 1231 [2019-10-13 19:21:13,350 INFO L226 Difference]: Without dead ends: 635 [2019-10-13 19:21:13,354 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:21:13,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 635 states. [2019-10-13 19:21:13,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 635 to 635. [2019-10-13 19:21:13,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 635 states. [2019-10-13 19:21:13,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 1006 transitions. [2019-10-13 19:21:13,390 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 1006 transitions. Word has length 122 [2019-10-13 19:21:13,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:21:13,391 INFO L462 AbstractCegarLoop]: Abstraction has 635 states and 1006 transitions. [2019-10-13 19:21:13,391 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:21:13,391 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 1006 transitions. [2019-10-13 19:21:13,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2019-10-13 19:21:13,393 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:21:13,394 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] [2019-10-13 19:21:13,601 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:21:13,602 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:21:13,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:21:13,603 INFO L82 PathProgramCache]: Analyzing trace with hash -1568855861, now seen corresponding path program 1 times [2019-10-13 19:21:13,603 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:21:13,603 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438077708] [2019-10-13 19:21:13,603 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:13,604 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:13,604 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:21:13,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:14,715 WARN L191 SmtUtils]: Spent 939.00 ms on a formula simplification that was a NOOP. DAG size: 400 [2019-10-13 19:21:14,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:14,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:14,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:14,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:14,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:14,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:14,966 WARN L191 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-10-13 19:21:14,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:15,125 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-13 19:21:15,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:15,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:15,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:15,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:15,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:15,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:15,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:15,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:15,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:15,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:15,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:15,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:15,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:15,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:15,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:15,393 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 19:21:15,393 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438077708] [2019-10-13 19:21:15,394 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [9858991] [2019-10-13 19:21:15,394 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 19:21:16,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:16,036 INFO L256 TraceCheckSpWp]: Trace formula consists of 3184 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:21:16,042 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:21:16,089 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 19:21:16,090 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:21:16,090 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2019-10-13 19:21:16,091 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835150588] [2019-10-13 19:21:16,093 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:21:16,093 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:21:16,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:21:16,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2019-10-13 19:21:16,094 INFO L87 Difference]: Start difference. First operand 635 states and 1006 transitions. Second operand 4 states. [2019-10-13 19:21:16,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:21:16,180 INFO L93 Difference]: Finished difference Result 1233 states and 1971 transitions. [2019-10-13 19:21:16,180 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:21:16,181 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 123 [2019-10-13 19:21:16,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:21:16,186 INFO L225 Difference]: With dead ends: 1233 [2019-10-13 19:21:16,186 INFO L226 Difference]: Without dead ends: 635 [2019-10-13 19:21:16,190 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:21:16,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 635 states. [2019-10-13 19:21:16,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 635 to 635. [2019-10-13 19:21:16,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 635 states. [2019-10-13 19:21:16,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 1005 transitions. [2019-10-13 19:21:16,227 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 1005 transitions. Word has length 123 [2019-10-13 19:21:16,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:21:16,228 INFO L462 AbstractCegarLoop]: Abstraction has 635 states and 1005 transitions. [2019-10-13 19:21:16,228 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:21:16,228 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 1005 transitions. [2019-10-13 19:21:16,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2019-10-13 19:21:16,234 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:21:16,234 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] [2019-10-13 19:21:16,453 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:21:16,453 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:21:16,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:21:16,454 INFO L82 PathProgramCache]: Analyzing trace with hash 43826914, now seen corresponding path program 1 times [2019-10-13 19:21:16,454 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:21:16,455 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008341441] [2019-10-13 19:21:16,455 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:16,455 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:16,455 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:21:16,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:17,570 WARN L191 SmtUtils]: Spent 976.00 ms on a formula simplification that was a NOOP. DAG size: 400 [2019-10-13 19:21:17,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:17,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:17,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:17,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:17,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:17,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:17,819 WARN L191 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-10-13 19:21:17,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:17,967 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-13 19:21:17,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:17,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:18,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:18,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:18,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:18,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:18,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:18,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:18,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:18,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:18,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:18,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:18,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:18,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:18,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:18,464 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 19:21:18,465 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008341441] [2019-10-13 19:21:18,466 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1484186284] [2019-10-13 19:21:18,466 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 19:21:19,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:19,155 INFO L256 TraceCheckSpWp]: Trace formula consists of 3185 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:21:19,165 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:21:19,229 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 19:21:19,229 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:21:19,230 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2019-10-13 19:21:19,230 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852091372] [2019-10-13 19:21:19,231 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:21:19,231 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:21:19,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:21:19,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2019-10-13 19:21:19,232 INFO L87 Difference]: Start difference. First operand 635 states and 1005 transitions. Second operand 4 states. [2019-10-13 19:21:19,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:21:19,319 INFO L93 Difference]: Finished difference Result 1233 states and 1970 transitions. [2019-10-13 19:21:19,319 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:21:19,319 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 124 [2019-10-13 19:21:19,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:21:19,325 INFO L225 Difference]: With dead ends: 1233 [2019-10-13 19:21:19,326 INFO L226 Difference]: Without dead ends: 635 [2019-10-13 19:21:19,329 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:21:19,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 635 states. [2019-10-13 19:21:19,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 635 to 635. [2019-10-13 19:21:19,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 635 states. [2019-10-13 19:21:19,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 1004 transitions. [2019-10-13 19:21:19,355 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 1004 transitions. Word has length 124 [2019-10-13 19:21:19,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:21:19,357 INFO L462 AbstractCegarLoop]: Abstraction has 635 states and 1004 transitions. [2019-10-13 19:21:19,357 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:21:19,357 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 1004 transitions. [2019-10-13 19:21:19,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2019-10-13 19:21:19,359 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:21:19,360 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] [2019-10-13 19:21:19,575 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:21:19,576 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:21:19,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:21:19,577 INFO L82 PathProgramCache]: Analyzing trace with hash 1250885551, now seen corresponding path program 1 times [2019-10-13 19:21:19,577 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:21:19,577 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639732986] [2019-10-13 19:21:19,577 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:19,578 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:19,578 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:21:19,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:20,657 WARN L191 SmtUtils]: Spent 839.00 ms on a formula simplification that was a NOOP. DAG size: 400 [2019-10-13 19:21:20,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:20,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:20,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:20,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:20,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:20,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:20,980 WARN L191 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-10-13 19:21:20,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:21,158 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-13 19:21:21,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:21,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:21,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:21,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:21,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:21,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:21,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:21,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:21,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:21,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:21,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:21,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:21,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:21,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:21,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:21,540 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 19:21:21,541 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639732986] [2019-10-13 19:21:21,541 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [672304054] [2019-10-13 19:21:21,541 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 19:21:22,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:22,074 INFO L256 TraceCheckSpWp]: Trace formula consists of 3186 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-13 19:21:22,090 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:21:22,201 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 19:21:22,202 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:21:22,202 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 17 [2019-10-13 19:21:22,202 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99391471] [2019-10-13 19:21:22,203 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 19:21:22,203 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:21:22,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 19:21:22,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2019-10-13 19:21:22,204 INFO L87 Difference]: Start difference. First operand 635 states and 1004 transitions. Second operand 7 states. [2019-10-13 19:21:22,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:21:22,363 INFO L93 Difference]: Finished difference Result 1240 states and 1979 transitions. [2019-10-13 19:21:22,364 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 19:21:22,364 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 125 [2019-10-13 19:21:22,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:21:22,369 INFO L225 Difference]: With dead ends: 1240 [2019-10-13 19:21:22,370 INFO L226 Difference]: Without dead ends: 646 [2019-10-13 19:21:22,373 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2019-10-13 19:21:22,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 646 states. [2019-10-13 19:21:22,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 646 to 642. [2019-10-13 19:21:22,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 642 states. [2019-10-13 19:21:22,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 1014 transitions. [2019-10-13 19:21:22,402 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 1014 transitions. Word has length 125 [2019-10-13 19:21:22,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:21:22,402 INFO L462 AbstractCegarLoop]: Abstraction has 642 states and 1014 transitions. [2019-10-13 19:21:22,402 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 19:21:22,403 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 1014 transitions. [2019-10-13 19:21:22,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2019-10-13 19:21:22,406 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:21:22,406 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] [2019-10-13 19:21:22,623 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:21:22,623 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:21:22,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:21:22,624 INFO L82 PathProgramCache]: Analyzing trace with hash 1116294219, now seen corresponding path program 1 times [2019-10-13 19:21:22,624 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:21:22,625 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062808146] [2019-10-13 19:21:22,625 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:22,627 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:22,627 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:21:22,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:23,827 WARN L191 SmtUtils]: Spent 1.05 s on a formula simplification that was a NOOP. DAG size: 400 [2019-10-13 19:21:23,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:23,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:23,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:23,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:23,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:23,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:24,088 WARN L191 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-10-13 19:21:24,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:24,255 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-13 19:21:24,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:24,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:24,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:24,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:24,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:24,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:24,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:24,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:24,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:24,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:24,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:24,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:24,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:24,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:24,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:24,612 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-13 19:21:24,613 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062808146] [2019-10-13 19:21:24,613 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [333879328] [2019-10-13 19:21:24,613 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 19:21:25,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:25,171 INFO L256 TraceCheckSpWp]: Trace formula consists of 3187 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:21:25,175 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:21:25,224 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 19:21:25,225 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:21:25,225 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 14 [2019-10-13 19:21:25,225 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638265675] [2019-10-13 19:21:25,226 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:21:25,226 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:21:25,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:21:25,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2019-10-13 19:21:25,227 INFO L87 Difference]: Start difference. First operand 642 states and 1014 transitions. Second operand 4 states. [2019-10-13 19:21:25,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:21:25,391 INFO L93 Difference]: Finished difference Result 1245 states and 1990 transitions. [2019-10-13 19:21:25,392 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 19:21:25,392 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 126 [2019-10-13 19:21:25,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:21:25,397 INFO L225 Difference]: With dead ends: 1245 [2019-10-13 19:21:25,398 INFO L226 Difference]: Without dead ends: 642 [2019-10-13 19:21:25,402 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2019-10-13 19:21:25,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2019-10-13 19:21:25,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 642. [2019-10-13 19:21:25,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 642 states. [2019-10-13 19:21:25,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 1009 transitions. [2019-10-13 19:21:25,427 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 1009 transitions. Word has length 126 [2019-10-13 19:21:25,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:21:25,429 INFO L462 AbstractCegarLoop]: Abstraction has 642 states and 1009 transitions. [2019-10-13 19:21:25,429 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:21:25,429 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 1009 transitions. [2019-10-13 19:21:25,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2019-10-13 19:21:25,432 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:21:25,432 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] [2019-10-13 19:21:25,640 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:21:25,640 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:21:25,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:21:25,641 INFO L82 PathProgramCache]: Analyzing trace with hash -162638701, now seen corresponding path program 1 times [2019-10-13 19:21:25,642 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:21:25,642 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383410793] [2019-10-13 19:21:25,642 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:25,642 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:25,642 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:21:25,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:26,676 WARN L191 SmtUtils]: Spent 910.00 ms on a formula simplification that was a NOOP. DAG size: 400 [2019-10-13 19:21:26,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:26,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:26,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:26,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:26,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:26,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:26,941 WARN L191 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-10-13 19:21:26,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:27,101 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-13 19:21:27,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:27,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:27,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:27,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:27,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:27,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:27,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:27,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:27,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:27,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:27,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:27,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:27,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:27,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:27,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:27,464 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-13 19:21:27,464 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383410793] [2019-10-13 19:21:27,464 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1309430352] [2019-10-13 19:21:27,465 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 19:21:28,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:28,016 INFO L256 TraceCheckSpWp]: Trace formula consists of 3189 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:21:28,021 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:21:28,059 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 19:21:28,060 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:21:28,060 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 14 [2019-10-13 19:21:28,060 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785010748] [2019-10-13 19:21:28,061 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:21:28,061 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:21:28,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:21:28,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2019-10-13 19:21:28,061 INFO L87 Difference]: Start difference. First operand 642 states and 1009 transitions. Second operand 4 states. [2019-10-13 19:21:28,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:21:28,205 INFO L93 Difference]: Finished difference Result 1245 states and 1980 transitions. [2019-10-13 19:21:28,206 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 19:21:28,206 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 128 [2019-10-13 19:21:28,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:21:28,211 INFO L225 Difference]: With dead ends: 1245 [2019-10-13 19:21:28,211 INFO L226 Difference]: Without dead ends: 642 [2019-10-13 19:21:28,215 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2019-10-13 19:21:28,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2019-10-13 19:21:28,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 642. [2019-10-13 19:21:28,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 642 states. [2019-10-13 19:21:28,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 1004 transitions. [2019-10-13 19:21:28,241 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 1004 transitions. Word has length 128 [2019-10-13 19:21:28,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:21:28,242 INFO L462 AbstractCegarLoop]: Abstraction has 642 states and 1004 transitions. [2019-10-13 19:21:28,242 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:21:28,242 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 1004 transitions. [2019-10-13 19:21:28,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2019-10-13 19:21:28,244 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:21:28,245 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] [2019-10-13 19:21:28,460 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:21:28,460 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:21:28,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:21:28,460 INFO L82 PathProgramCache]: Analyzing trace with hash 2001392257, now seen corresponding path program 1 times [2019-10-13 19:21:28,461 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:21:28,461 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502816572] [2019-10-13 19:21:28,461 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:28,461 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:28,461 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:21:28,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:29,338 WARN L191 SmtUtils]: Spent 801.00 ms on a formula simplification that was a NOOP. DAG size: 400 [2019-10-13 19:21:29,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:29,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:29,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:29,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:29,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:29,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:29,585 WARN L191 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-10-13 19:21:29,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:29,742 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-13 19:21:29,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:29,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:29,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:29,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:29,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:29,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:29,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:29,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:29,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:29,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:29,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:29,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:29,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:29,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:29,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:30,062 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-13 19:21:30,063 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502816572] [2019-10-13 19:21:30,063 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [255319874] [2019-10-13 19:21:30,063 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)