/usr/bin/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_product26.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 21:31:00,403 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 21:31:00,406 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 21:31:00,424 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 21:31:00,425 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 21:31:00,427 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 21:31:00,429 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 21:31:00,441 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 21:31:00,443 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 21:31:00,444 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 21:31:00,445 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 21:31:00,446 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 21:31:00,446 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 21:31:00,447 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 21:31:00,448 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 21:31:00,450 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 21:31:00,450 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 21:31:00,451 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 21:31:00,453 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 21:31:00,455 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 21:31:00,456 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 21:31:00,457 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 21:31:00,458 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 21:31:00,459 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 21:31:00,461 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-06 21:31:00,461 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-06 21:31:00,462 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-06 21:31:00,463 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-06 21:31:00,463 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-06 21:31:00,464 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-06 21:31:00,464 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-06 21:31:00,465 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-06 21:31:00,466 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-06 21:31:00,467 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-06 21:31:00,468 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-06 21:31:00,468 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-06 21:31:00,469 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-06 21:31:00,469 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-06 21:31:00,469 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 21:31:00,470 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 21:31:00,471 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 21:31:00,472 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 [2019-11-06 21:31:00,485 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 21:31:00,486 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 21:31:00,487 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 21:31:00,487 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 21:31:00,488 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 21:31:00,488 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 21:31:00,488 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 21:31:00,488 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 21:31:00,488 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 21:31:00,489 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 21:31:00,489 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 21:31:00,489 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 21:31:00,489 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 21:31:00,489 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 21:31:00,490 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 21:31:00,490 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 21:31:00,490 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 21:31:00,490 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 21:31:00,490 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 21:31:00,491 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 21:31:00,491 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 21:31:00,491 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 21:31:00,491 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 21:31:00,491 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 21:31:00,492 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 21:31:00,492 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 21:31:00,492 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 21:31:00,492 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 21:31:00,492 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-06 21:31:00,808 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 21:31:00,822 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 21:31:00,825 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 21:31:00,827 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 21:31:00,827 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 21:31:00,828 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec1_product26.cil.c [2019-11-06 21:31:00,908 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/632d62958/fcf077bcced54bf482121267f1a47353/FLAG8a991460c [2019-11-06 21:31:01,504 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 21:31:01,504 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec1_product26.cil.c [2019-11-06 21:31:01,524 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/632d62958/fcf077bcced54bf482121267f1a47353/FLAG8a991460c [2019-11-06 21:31:01,688 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/632d62958/fcf077bcced54bf482121267f1a47353 [2019-11-06 21:31:01,696 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 21:31:01,697 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 21:31:01,698 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 21:31:01,699 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 21:31:01,702 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 21:31:01,703 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:31:01" (1/1) ... [2019-11-06 21:31:01,706 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@273b8da6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:31:01, skipping insertion in model container [2019-11-06 21:31:01,707 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:31:01" (1/1) ... [2019-11-06 21:31:01,715 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 21:31:01,794 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 21:31:02,522 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 21:31:02,542 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 21:31:02,700 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 21:31:02,762 INFO L192 MainTranslator]: Completed translation [2019-11-06 21:31:02,762 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:31:02 WrapperNode [2019-11-06 21:31:02,762 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 21:31:02,763 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 21:31:02,763 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 21:31:02,763 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 21:31:02,778 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:31:02" (1/1) ... [2019-11-06 21:31:02,778 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:31:02" (1/1) ... [2019-11-06 21:31:02,809 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:31:02" (1/1) ... [2019-11-06 21:31:02,810 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:31:02" (1/1) ... [2019-11-06 21:31:02,893 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:31:02" (1/1) ... [2019-11-06 21:31:02,949 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:31:02" (1/1) ... [2019-11-06 21:31:02,968 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:31:02" (1/1) ... [2019-11-06 21:31:02,983 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 21:31:02,984 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 21:31:02,984 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 21:31:02,984 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 21:31:02,985 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:31:02" (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 [2019-11-06 21:31:03,053 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 21:31:03,054 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 21:31:03,054 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-06 21:31:03,054 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-06 21:31:03,054 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-11-06 21:31:03,055 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-11-06 21:31:03,055 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-11-06 21:31:03,055 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-11-06 21:31:03,055 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-11-06 21:31:03,056 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-11-06 21:31:03,056 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__weight [2019-11-06 21:31:03,056 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-11-06 21:31:03,056 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-11-06 21:31:03,056 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-11-06 21:31:03,057 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-11-06 21:31:03,057 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-11-06 21:31:03,057 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-11-06 21:31:03,057 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-11-06 21:31:03,058 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-11-06 21:31:03,058 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-11-06 21:31:03,058 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-11-06 21:31:03,058 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-11-06 21:31:03,059 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-11-06 21:31:03,059 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-11-06 21:31:03,059 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-11-06 21:31:03,059 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-11-06 21:31:03,059 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-11-06 21:31:03,060 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__empty [2019-11-06 21:31:03,060 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-11-06 21:31:03,060 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__wrappee__empty [2019-11-06 21:31:03,060 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-11-06 21:31:03,060 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-11-06 21:31:03,060 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-06 21:31:03,061 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-06 21:31:03,061 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-06 21:31:03,061 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-06 21:31:03,061 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-06 21:31:03,061 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-06 21:31:03,061 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-06 21:31:03,062 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-06 21:31:03,062 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-06 21:31:03,062 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-06 21:31:03,062 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-11-06 21:31:03,062 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-11-06 21:31:03,063 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-11-06 21:31:03,063 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-11-06 21:31:03,063 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-11-06 21:31:03,063 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2019-11-06 21:31:03,063 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__2 [2019-11-06 21:31:03,064 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__3 [2019-11-06 21:31:03,064 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__4 [2019-11-06 21:31:03,064 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-11-06 21:31:03,064 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-11-06 21:31:03,064 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-11-06 21:31:03,064 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-11-06 21:31:03,065 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-11-06 21:31:03,065 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-11-06 21:31:03,065 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-11-06 21:31:03,065 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-11-06 21:31:03,065 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-11-06 21:31:03,065 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-11-06 21:31:03,066 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-11-06 21:31:03,066 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-11-06 21:31:03,066 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-11-06 21:31:03,066 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-11-06 21:31:03,066 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-06 21:31:03,066 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-11-06 21:31:03,067 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 21:31:03,067 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-06 21:31:03,067 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-11-06 21:31:03,067 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-11-06 21:31:03,067 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-11-06 21:31:03,068 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-11-06 21:31:03,068 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-11-06 21:31:03,068 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-11-06 21:31:03,068 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-11-06 21:31:03,068 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-11-06 21:31:03,069 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 21:31:03,069 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 21:31:03,069 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-11-06 21:31:03,069 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-11-06 21:31:03,069 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-11-06 21:31:03,070 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-06 21:31:03,070 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-06 21:31:03,070 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-11-06 21:31:03,070 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-11-06 21:31:03,070 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-11-06 21:31:03,070 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-11-06 21:31:03,071 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-11-06 21:31:03,071 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-11-06 21:31:03,071 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-11-06 21:31:03,071 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-11-06 21:31:03,071 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-11-06 21:31:03,071 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-11-06 21:31:03,072 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-11-06 21:31:03,072 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-11-06 21:31:03,072 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-11-06 21:31:03,072 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-11-06 21:31:03,072 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-11-06 21:31:03,073 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-11-06 21:31:03,073 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-11-06 21:31:03,073 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-11-06 21:31:03,073 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-11-06 21:31:03,073 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-11-06 21:31:03,073 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-11-06 21:31:03,074 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-11-06 21:31:03,074 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__weight [2019-11-06 21:31:03,074 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-11-06 21:31:03,074 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-11-06 21:31:03,074 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-11-06 21:31:03,074 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-11-06 21:31:03,075 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-11-06 21:31:03,075 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-11-06 21:31:03,075 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-11-06 21:31:03,075 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-11-06 21:31:03,075 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-11-06 21:31:03,075 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-11-06 21:31:03,076 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__empty [2019-11-06 21:31:03,076 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__3 [2019-11-06 21:31:03,076 INFO L130 BoogieDeclarations]: Found specification of procedure printState__wrappee__empty [2019-11-06 21:31:03,076 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-06 21:31:03,076 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-11-06 21:31:03,077 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-06 21:31:03,077 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-06 21:31:03,077 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-06 21:31:03,077 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-06 21:31:03,077 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-06 21:31:03,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-06 21:31:03,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-06 21:31:03,078 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-06 21:31:03,078 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-06 21:31:03,078 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-06 21:31:03,078 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-06 21:31:03,079 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-06 21:31:03,079 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-06 21:31:03,079 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-06 21:31:03,079 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-06 21:31:03,079 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-06 21:31:03,079 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-06 21:31:03,080 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-06 21:31:03,080 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-06 21:31:03,080 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-06 21:31:03,080 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-11-06 21:31:03,080 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-11-06 21:31:03,081 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-11-06 21:31:03,082 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-11-06 21:31:03,082 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-06 21:31:03,082 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2019-11-06 21:31:03,083 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__2 [2019-11-06 21:31:03,083 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__4 [2019-11-06 21:31:03,083 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-06 21:31:03,083 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-11-06 21:31:03,083 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-11-06 21:31:03,083 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-11-06 21:31:03,084 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-11-06 21:31:03,084 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-11-06 21:31:03,084 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-11-06 21:31:03,084 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-11-06 21:31:03,084 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-11-06 21:31:03,084 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-11-06 21:31:03,085 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-11-06 21:31:03,085 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-11-06 21:31:03,085 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-06 21:31:03,085 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-11-06 21:31:03,085 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 21:31:03,085 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-11-06 21:31:03,085 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 21:31:03,086 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-06 21:31:03,086 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 21:31:05,465 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 21:31:05,465 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-11-06 21:31:05,467 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:31:05 BoogieIcfgContainer [2019-11-06 21:31:05,467 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 21:31:05,469 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 21:31:05,469 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 21:31:05,472 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 21:31:05,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:31:01" (1/3) ... [2019-11-06 21:31:05,473 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@161956f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:31:05, skipping insertion in model container [2019-11-06 21:31:05,473 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:31:02" (2/3) ... [2019-11-06 21:31:05,474 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@161956f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:31:05, skipping insertion in model container [2019-11-06 21:31:05,474 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:31:05" (3/3) ... [2019-11-06 21:31:05,476 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product26.cil.c [2019-11-06 21:31:05,487 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 21:31:05,496 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 21:31:05,509 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 21:31:05,548 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 21:31:05,549 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 21:31:05,549 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 21:31:05,549 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 21:31:05,549 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 21:31:05,549 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 21:31:05,549 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 21:31:05,549 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 21:31:05,597 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2019-11-06 21:31:05,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2019-11-06 21:31:05,631 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:31:05,633 INFO L410 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] [2019-11-06 21:31:05,635 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:31:05,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:31:05,642 INFO L82 PathProgramCache]: Analyzing trace with hash 1704372100, now seen corresponding path program 1 times [2019-11-06 21:31:05,651 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:31:05,651 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215061262] [2019-11-06 21:31:05,652 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:31:06,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:07,310 WARN L191 SmtUtils]: Spent 1.05 s on a formula simplification that was a NOOP. DAG size: 397 [2019-11-06 21:31:07,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:07,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:07,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:07,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:07,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:07,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:07,631 WARN L191 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-11-06 21:31:07,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:07,864 WARN L191 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-11-06 21:31:07,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:07,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:07,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:07,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:07,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:08,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:08,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:08,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:08,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:08,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:08,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:08,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:08,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:08,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:08,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:08,232 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-11-06 21:31:08,232 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215061262] [2019-11-06 21:31:08,233 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [227628506] [2019-11-06 21:31:08,234 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 [2019-11-06 21:31:08,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:08,852 INFO L256 TraceCheckSpWp]: Trace formula consists of 3170 conjuncts, 1 conjunts are in the unsatisfiable core [2019-11-06 21:31:08,871 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:31:08,913 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-11-06 21:31:08,914 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:31:08,914 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2019-11-06 21:31:08,917 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723381223] [2019-11-06 21:31:08,922 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-06 21:31:08,922 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:31:08,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-06 21:31:08,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-11-06 21:31:08,939 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 2 states. [2019-11-06 21:31:09,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:31:09,022 INFO L93 Difference]: Finished difference Result 651 states and 1038 transitions. [2019-11-06 21:31:09,023 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-06 21:31:09,028 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 116 [2019-11-06 21:31:09,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:31:09,077 INFO L225 Difference]: With dead ends: 651 [2019-11-06 21:31:09,078 INFO L226 Difference]: Without dead ends: 614 [2019-11-06 21:31:09,087 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-11-06 21:31:09,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2019-11-06 21:31:09,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 614. [2019-11-06 21:31:09,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 614 states. [2019-11-06 21:31:09,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 983 transitions. [2019-11-06 21:31:09,209 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 983 transitions. Word has length 116 [2019-11-06 21:31:09,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:31:09,212 INFO L462 AbstractCegarLoop]: Abstraction has 614 states and 983 transitions. [2019-11-06 21:31:09,212 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-06 21:31:09,212 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 983 transitions. [2019-11-06 21:31:09,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2019-11-06 21:31:09,217 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:31:09,217 INFO L410 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] [2019-11-06 21:31:09,420 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:31:09,422 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:31:09,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:31:09,423 INFO L82 PathProgramCache]: Analyzing trace with hash 2086080695, now seen corresponding path program 1 times [2019-11-06 21:31:09,423 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:31:09,424 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853378328] [2019-11-06 21:31:09,424 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:31:09,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:10,451 WARN L191 SmtUtils]: Spent 889.00 ms on a formula simplification that was a NOOP. DAG size: 397 [2019-11-06 21:31:10,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:10,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:10,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:10,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:10,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:10,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:10,738 WARN L191 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-11-06 21:31:10,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:10,952 WARN L191 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-11-06 21:31:10,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:10,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:10,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:11,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:11,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:11,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:11,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:11,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:11,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:11,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:11,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:11,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:11,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:11,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:11,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:11,202 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-11-06 21:31:11,202 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853378328] [2019-11-06 21:31:11,202 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1710972118] [2019-11-06 21:31:11,202 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 [2019-11-06 21:31:11,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:11,753 INFO L256 TraceCheckSpWp]: Trace formula consists of 3173 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-06 21:31:11,761 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:31:11,822 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-11-06 21:31:11,823 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:31:11,823 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2019-11-06 21:31:11,823 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159851071] [2019-11-06 21:31:11,825 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 21:31:11,825 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:31:11,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 21:31:11,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2019-11-06 21:31:11,826 INFO L87 Difference]: Start difference. First operand 614 states and 983 transitions. Second operand 4 states. [2019-11-06 21:31:12,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:31:12,015 INFO L93 Difference]: Finished difference Result 1200 states and 1939 transitions. [2019-11-06 21:31:12,015 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 21:31:12,016 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 118 [2019-11-06 21:31:12,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:31:12,022 INFO L225 Difference]: With dead ends: 1200 [2019-11-06 21:31:12,022 INFO L226 Difference]: Without dead ends: 614 [2019-11-06 21:31:12,029 INFO L630 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 [2019-11-06 21:31:12,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2019-11-06 21:31:12,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 614. [2019-11-06 21:31:12,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 614 states. [2019-11-06 21:31:12,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 982 transitions. [2019-11-06 21:31:12,074 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 982 transitions. Word has length 118 [2019-11-06 21:31:12,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:31:12,074 INFO L462 AbstractCegarLoop]: Abstraction has 614 states and 982 transitions. [2019-11-06 21:31:12,075 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 21:31:12,075 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 982 transitions. [2019-11-06 21:31:12,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-11-06 21:31:12,078 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:31:12,078 INFO L410 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] [2019-11-06 21:31:12,291 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:31:12,292 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:31:12,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:31:12,293 INFO L82 PathProgramCache]: Analyzing trace with hash 1224648271, now seen corresponding path program 1 times [2019-11-06 21:31:12,293 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:31:12,294 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785117039] [2019-11-06 21:31:12,294 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:31:12,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:13,247 WARN L191 SmtUtils]: Spent 831.00 ms on a formula simplification that was a NOOP. DAG size: 397 [2019-11-06 21:31:13,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:13,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:13,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:13,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:13,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:13,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:13,558 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-11-06 21:31:13,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:13,713 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-11-06 21:31:13,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:13,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:13,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:13,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:13,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:13,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:13,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:13,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:13,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:13,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:13,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:13,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:13,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:13,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:13,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:13,952 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-11-06 21:31:13,953 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785117039] [2019-11-06 21:31:13,953 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1119041122] [2019-11-06 21:31:13,953 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 [2019-11-06 21:31:14,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:14,491 INFO L256 TraceCheckSpWp]: Trace formula consists of 3175 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-06 21:31:14,497 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:31:14,547 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-11-06 21:31:14,548 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:31:14,548 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2019-11-06 21:31:14,548 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31676150] [2019-11-06 21:31:14,549 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 21:31:14,549 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:31:14,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 21:31:14,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2019-11-06 21:31:14,550 INFO L87 Difference]: Start difference. First operand 614 states and 982 transitions. Second operand 4 states. [2019-11-06 21:31:14,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:31:14,643 INFO L93 Difference]: Finished difference Result 1200 states and 1937 transitions. [2019-11-06 21:31:14,643 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 21:31:14,644 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 120 [2019-11-06 21:31:14,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:31:14,650 INFO L225 Difference]: With dead ends: 1200 [2019-11-06 21:31:14,650 INFO L226 Difference]: Without dead ends: 614 [2019-11-06 21:31:14,654 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-11-06 21:31:14,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2019-11-06 21:31:14,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 614. [2019-11-06 21:31:14,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 614 states. [2019-11-06 21:31:14,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 981 transitions. [2019-11-06 21:31:14,690 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 981 transitions. Word has length 120 [2019-11-06 21:31:14,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:31:14,690 INFO L462 AbstractCegarLoop]: Abstraction has 614 states and 981 transitions. [2019-11-06 21:31:14,690 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 21:31:14,690 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 981 transitions. [2019-11-06 21:31:14,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2019-11-06 21:31:14,694 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:31:14,694 INFO L410 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] [2019-11-06 21:31:14,909 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:31:14,909 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:31:14,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:31:14,910 INFO L82 PathProgramCache]: Analyzing trace with hash -2135037313, now seen corresponding path program 1 times [2019-11-06 21:31:14,910 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:31:14,911 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230067251] [2019-11-06 21:31:14,911 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:31:14,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:15,908 WARN L191 SmtUtils]: Spent 814.00 ms on a formula simplification that was a NOOP. DAG size: 397 [2019-11-06 21:31:15,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:15,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:15,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:15,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:15,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:15,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:16,214 WARN L191 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-11-06 21:31:16,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:16,367 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-11-06 21:31:16,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:16,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:16,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:16,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:16,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:16,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:16,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:16,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:16,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:16,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:16,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:16,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:16,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:16,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:16,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:16,653 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-11-06 21:31:16,653 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230067251] [2019-11-06 21:31:16,653 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2108223764] [2019-11-06 21:31:16,653 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 [2019-11-06 21:31:17,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:17,203 INFO L256 TraceCheckSpWp]: Trace formula consists of 3177 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-06 21:31:17,208 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:31:17,258 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-11-06 21:31:17,258 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:31:17,259 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2019-11-06 21:31:17,259 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149669139] [2019-11-06 21:31:17,260 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 21:31:17,260 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:31:17,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 21:31:17,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2019-11-06 21:31:17,262 INFO L87 Difference]: Start difference. First operand 614 states and 981 transitions. Second operand 4 states. [2019-11-06 21:31:17,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:31:17,360 INFO L93 Difference]: Finished difference Result 1207 states and 1944 transitions. [2019-11-06 21:31:17,360 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 21:31:17,360 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 122 [2019-11-06 21:31:17,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:31:17,371 INFO L225 Difference]: With dead ends: 1207 [2019-11-06 21:31:17,372 INFO L226 Difference]: Without dead ends: 623 [2019-11-06 21:31:17,380 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-11-06 21:31:17,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2019-11-06 21:31:17,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 623. [2019-11-06 21:31:17,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 623 states. [2019-11-06 21:31:17,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 993 transitions. [2019-11-06 21:31:17,426 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 993 transitions. Word has length 122 [2019-11-06 21:31:17,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:31:17,427 INFO L462 AbstractCegarLoop]: Abstraction has 623 states and 993 transitions. [2019-11-06 21:31:17,427 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 21:31:17,427 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 993 transitions. [2019-11-06 21:31:17,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2019-11-06 21:31:17,436 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:31:17,436 INFO L410 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] [2019-11-06 21:31:17,654 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:31:17,654 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:31:17,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:31:17,655 INFO L82 PathProgramCache]: Analyzing trace with hash 2064176466, now seen corresponding path program 1 times [2019-11-06 21:31:17,655 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:31:17,655 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596780920] [2019-11-06 21:31:17,655 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:31:17,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:18,688 WARN L191 SmtUtils]: Spent 906.00 ms on a formula simplification that was a NOOP. DAG size: 397 [2019-11-06 21:31:18,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:18,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:18,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:18,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:18,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:18,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:18,939 WARN L191 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-11-06 21:31:18,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:19,107 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-11-06 21:31:19,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:19,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:19,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:19,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:19,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:19,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:19,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:19,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:19,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:19,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:19,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:19,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:19,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:19,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:19,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:19,414 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-11-06 21:31:19,415 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596780920] [2019-11-06 21:31:19,415 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [523843900] [2019-11-06 21:31:19,416 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 [2019-11-06 21:31:20,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:20,109 INFO L256 TraceCheckSpWp]: Trace formula consists of 3178 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-06 21:31:20,115 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:31:20,164 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-11-06 21:31:20,165 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:31:20,165 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2019-11-06 21:31:20,166 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776343615] [2019-11-06 21:31:20,167 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 21:31:20,167 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:31:20,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 21:31:20,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2019-11-06 21:31:20,168 INFO L87 Difference]: Start difference. First operand 623 states and 993 transitions. Second operand 4 states. [2019-11-06 21:31:20,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:31:20,248 INFO L93 Difference]: Finished difference Result 1209 states and 1945 transitions. [2019-11-06 21:31:20,248 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 21:31:20,248 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 123 [2019-11-06 21:31:20,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:31:20,254 INFO L225 Difference]: With dead ends: 1209 [2019-11-06 21:31:20,255 INFO L226 Difference]: Without dead ends: 623 [2019-11-06 21:31:20,259 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-11-06 21:31:20,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2019-11-06 21:31:20,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 623. [2019-11-06 21:31:20,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 623 states. [2019-11-06 21:31:20,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 992 transitions. [2019-11-06 21:31:20,285 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 992 transitions. Word has length 123 [2019-11-06 21:31:20,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:31:20,286 INFO L462 AbstractCegarLoop]: Abstraction has 623 states and 992 transitions. [2019-11-06 21:31:20,286 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 21:31:20,286 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 992 transitions. [2019-11-06 21:31:20,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2019-11-06 21:31:20,291 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:31:20,291 INFO L410 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] [2019-11-06 21:31:20,499 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:31:20,500 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:31:20,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:31:20,500 INFO L82 PathProgramCache]: Analyzing trace with hash 1849317603, now seen corresponding path program 1 times [2019-11-06 21:31:20,501 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:31:20,501 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378043495] [2019-11-06 21:31:20,501 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:31:20,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:21,648 WARN L191 SmtUtils]: Spent 999.00 ms on a formula simplification that was a NOOP. DAG size: 397 [2019-11-06 21:31:21,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:21,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:21,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:21,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:21,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:21,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:21,889 WARN L191 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-11-06 21:31:21,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:22,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:22,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:22,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:22,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:22,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:22,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:22,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:22,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:22,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:22,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:22,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:22,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:22,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:22,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:22,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:22,320 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-11-06 21:31:22,321 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378043495] [2019-11-06 21:31:22,321 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1606524110] [2019-11-06 21:31:22,321 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 [2019-11-06 21:31:22,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:22,955 INFO L256 TraceCheckSpWp]: Trace formula consists of 3179 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-06 21:31:22,961 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:31:23,003 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-11-06 21:31:23,003 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:31:23,004 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2019-11-06 21:31:23,004 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744026871] [2019-11-06 21:31:23,004 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 21:31:23,005 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:31:23,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 21:31:23,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2019-11-06 21:31:23,005 INFO L87 Difference]: Start difference. First operand 623 states and 992 transitions. Second operand 4 states. [2019-11-06 21:31:23,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:31:23,086 INFO L93 Difference]: Finished difference Result 1209 states and 1944 transitions. [2019-11-06 21:31:23,087 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 21:31:23,087 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 124 [2019-11-06 21:31:23,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:31:23,093 INFO L225 Difference]: With dead ends: 1209 [2019-11-06 21:31:23,094 INFO L226 Difference]: Without dead ends: 623 [2019-11-06 21:31:23,098 INFO L630 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 [2019-11-06 21:31:23,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2019-11-06 21:31:23,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 623. [2019-11-06 21:31:23,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 623 states. [2019-11-06 21:31:23,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 991 transitions. [2019-11-06 21:31:23,125 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 991 transitions. Word has length 124 [2019-11-06 21:31:23,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:31:23,125 INFO L462 AbstractCegarLoop]: Abstraction has 623 states and 991 transitions. [2019-11-06 21:31:23,125 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 21:31:23,125 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 991 transitions. [2019-11-06 21:31:23,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2019-11-06 21:31:23,129 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:31:23,129 INFO L410 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] [2019-11-06 21:31:23,336 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:31:23,337 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:31:23,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:31:23,338 INFO L82 PathProgramCache]: Analyzing trace with hash -2057806986, now seen corresponding path program 1 times [2019-11-06 21:31:23,338 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:31:23,338 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074176783] [2019-11-06 21:31:23,339 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:31:23,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:24,388 WARN L191 SmtUtils]: Spent 837.00 ms on a formula simplification that was a NOOP. DAG size: 397 [2019-11-06 21:31:24,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:24,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:24,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:24,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:24,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:24,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:24,700 WARN L191 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-11-06 21:31:24,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:24,870 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-11-06 21:31:24,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:24,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:24,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:24,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:24,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:24,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:24,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:24,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:24,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:24,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:25,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:25,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:25,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:25,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:25,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:25,278 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-11-06 21:31:25,278 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074176783] [2019-11-06 21:31:25,278 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [548789655] [2019-11-06 21:31:25,279 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 [2019-11-06 21:31:25,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:25,906 INFO L256 TraceCheckSpWp]: Trace formula consists of 3180 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-06 21:31:25,918 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:31:25,966 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:31:25,966 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:31:25,967 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 14 [2019-11-06 21:31:25,969 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447815510] [2019-11-06 21:31:25,970 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 21:31:25,970 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:31:25,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 21:31:25,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2019-11-06 21:31:25,971 INFO L87 Difference]: Start difference. First operand 623 states and 991 transitions. Second operand 4 states. [2019-11-06 21:31:26,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:31:26,132 INFO L93 Difference]: Finished difference Result 1208 states and 1944 transitions. [2019-11-06 21:31:26,132 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 21:31:26,133 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 125 [2019-11-06 21:31:26,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:31:26,141 INFO L225 Difference]: With dead ends: 1208 [2019-11-06 21:31:26,141 INFO L226 Difference]: Without dead ends: 623 [2019-11-06 21:31:26,144 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2019-11-06 21:31:26,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2019-11-06 21:31:26,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 623. [2019-11-06 21:31:26,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 623 states. [2019-11-06 21:31:26,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 986 transitions. [2019-11-06 21:31:26,166 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 986 transitions. Word has length 125 [2019-11-06 21:31:26,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:31:26,166 INFO L462 AbstractCegarLoop]: Abstraction has 623 states and 986 transitions. [2019-11-06 21:31:26,166 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 21:31:26,167 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 986 transitions. [2019-11-06 21:31:26,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2019-11-06 21:31:26,169 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:31:26,169 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:31:26,376 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:31:26,377 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:31:26,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:31:26,377 INFO L82 PathProgramCache]: Analyzing trace with hash 202858592, now seen corresponding path program 1 times [2019-11-06 21:31:26,378 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:31:26,378 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661006399] [2019-11-06 21:31:26,378 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:31:26,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:27,433 WARN L191 SmtUtils]: Spent 931.00 ms on a formula simplification that was a NOOP. DAG size: 397 [2019-11-06 21:31:27,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:27,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:27,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:27,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:27,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:27,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:27,722 WARN L191 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-11-06 21:31:27,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:27,905 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-11-06 21:31:27,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:27,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:27,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:28,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:28,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:28,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:28,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:28,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:28,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:28,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:28,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:28,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:28,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:28,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:28,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:28,285 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-11-06 21:31:28,286 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661006399] [2019-11-06 21:31:28,286 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [342494212] [2019-11-06 21:31:28,287 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 [2019-11-06 21:31:29,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:29,017 INFO L256 TraceCheckSpWp]: Trace formula consists of 3182 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-06 21:31:29,023 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:31:29,073 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:31:29,074 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:31:29,074 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 14 [2019-11-06 21:31:29,074 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995421123] [2019-11-06 21:31:29,075 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 21:31:29,075 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:31:29,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 21:31:29,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2019-11-06 21:31:29,075 INFO L87 Difference]: Start difference. First operand 623 states and 986 transitions. Second operand 4 states. [2019-11-06 21:31:29,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:31:29,222 INFO L93 Difference]: Finished difference Result 1208 states and 1934 transitions. [2019-11-06 21:31:29,222 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 21:31:29,222 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 127 [2019-11-06 21:31:29,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:31:29,228 INFO L225 Difference]: With dead ends: 1208 [2019-11-06 21:31:29,228 INFO L226 Difference]: Without dead ends: 623 [2019-11-06 21:31:29,231 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2019-11-06 21:31:29,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2019-11-06 21:31:29,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 623. [2019-11-06 21:31:29,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 623 states. [2019-11-06 21:31:29,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 981 transitions. [2019-11-06 21:31:29,253 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 981 transitions. Word has length 127 [2019-11-06 21:31:29,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:31:29,253 INFO L462 AbstractCegarLoop]: Abstraction has 623 states and 981 transitions. [2019-11-06 21:31:29,253 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 21:31:29,254 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 981 transitions. [2019-11-06 21:31:29,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2019-11-06 21:31:29,256 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:31:29,256 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:31:29,464 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:31:29,464 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:31:29,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:31:29,465 INFO L82 PathProgramCache]: Analyzing trace with hash 1413341996, now seen corresponding path program 1 times [2019-11-06 21:31:29,465 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:31:29,465 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132329810] [2019-11-06 21:31:29,466 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:31:29,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:30,404 WARN L191 SmtUtils]: Spent 831.00 ms on a formula simplification that was a NOOP. DAG size: 397 [2019-11-06 21:31:30,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:30,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:30,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:30,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:30,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:30,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:30,700 WARN L191 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-11-06 21:31:30,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:30,880 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-11-06 21:31:30,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:30,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:30,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:31,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:31,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:31,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:31,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:31,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:31,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:31,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:31,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:31,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:31,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:31,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:31,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:31,214 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-11-06 21:31:31,214 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132329810] [2019-11-06 21:31:31,215 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1675922864] [2019-11-06 21:31:31,215 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 [2019-11-06 21:31:31,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:31,786 INFO L256 TraceCheckSpWp]: Trace formula consists of 3184 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-06 21:31:31,793 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:31:31,842 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:31:31,843 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:31:31,843 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 14 [2019-11-06 21:31:31,843 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567121966] [2019-11-06 21:31:31,844 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 21:31:31,844 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:31:31,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 21:31:31,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2019-11-06 21:31:31,845 INFO L87 Difference]: Start difference. First operand 623 states and 981 transitions. Second operand 4 states. [2019-11-06 21:31:32,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:31:32,074 INFO L93 Difference]: Finished difference Result 1244 states and 1983 transitions. [2019-11-06 21:31:32,074 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 21:31:32,075 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 129 [2019-11-06 21:31:32,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:31:32,083 INFO L225 Difference]: With dead ends: 1244 [2019-11-06 21:31:32,084 INFO L226 Difference]: Without dead ends: 662 [2019-11-06 21:31:32,088 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2019-11-06 21:31:32,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2019-11-06 21:31:32,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 662. [2019-11-06 21:31:32,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 662 states. [2019-11-06 21:31:32,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 1045 transitions. [2019-11-06 21:31:32,121 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 1045 transitions. Word has length 129 [2019-11-06 21:31:32,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:31:32,122 INFO L462 AbstractCegarLoop]: Abstraction has 662 states and 1045 transitions. [2019-11-06 21:31:32,122 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 21:31:32,122 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 1045 transitions. [2019-11-06 21:31:32,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2019-11-06 21:31:32,126 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:31:32,127 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:31:32,338 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:31:32,338 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:31:32,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:31:32,339 INFO L82 PathProgramCache]: Analyzing trace with hash -1210514670, now seen corresponding path program 1 times [2019-11-06 21:31:32,339 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:31:32,339 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111313085] [2019-11-06 21:31:32,340 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:31:32,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:33,432 WARN L191 SmtUtils]: Spent 939.00 ms on a formula simplification that was a NOOP. DAG size: 397 [2019-11-06 21:31:33,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:33,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:33,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:33,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:33,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:33,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:33,700 WARN L191 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-11-06 21:31:33,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:33,900 WARN L191 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-11-06 21:31:33,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:33,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:33,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:34,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:34,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat