/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_product23.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 21:30:48,669 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 21:30:48,672 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 21:30:48,686 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 21:30:48,687 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 21:30:48,688 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 21:30:48,689 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 21:30:48,691 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 21:30:48,693 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 21:30:48,693 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 21:30:48,698 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 21:30:48,699 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 21:30:48,699 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 21:30:48,700 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 21:30:48,702 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 21:30:48,703 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 21:30:48,705 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 21:30:48,706 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 21:30:48,710 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 21:30:48,714 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 21:30:48,716 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 21:30:48,720 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 21:30:48,722 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 21:30:48,723 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 21:30:48,728 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-06 21:30:48,728 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-06 21:30:48,729 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-06 21:30:48,730 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-06 21:30:48,730 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-06 21:30:48,731 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-06 21:30:48,731 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-06 21:30:48,735 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-06 21:30:48,736 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-06 21:30:48,738 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-06 21:30:48,742 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-06 21:30:48,742 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-06 21:30:48,743 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-06 21:30:48,743 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-06 21:30:48,743 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 21:30:48,746 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 21:30:48,747 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 21:30:48,748 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 21:30:48,766 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 21:30:48,767 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 21:30:48,768 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 21:30:48,768 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 21:30:48,768 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 21:30:48,768 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 21:30:48,769 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 21:30:48,769 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 21:30:48,769 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 21:30:48,769 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 21:30:48,769 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 21:30:48,770 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 21:30:48,770 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 21:30:48,770 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 21:30:48,770 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 21:30:48,770 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 21:30:48,771 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 21:30:48,771 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 21:30:48,771 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 21:30:48,771 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 21:30:48,772 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 21:30:48,772 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 21:30:48,772 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 21:30:48,772 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 21:30:48,772 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 21:30:48,773 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 21:30:48,773 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 21:30:48,773 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 21:30:48,773 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-06 21:30:49,072 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 21:30:49,093 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 21:30:49,100 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 21:30:49,102 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 21:30:49,102 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 21:30:49,103 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec1_product23.cil.c [2019-11-06 21:30:49,158 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba2040049/f0eb7960a08c46cc9627b2937d109e43/FLAG88ce2e7d8 [2019-11-06 21:30:49,727 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 21:30:49,729 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec1_product23.cil.c [2019-11-06 21:30:49,756 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba2040049/f0eb7960a08c46cc9627b2937d109e43/FLAG88ce2e7d8 [2019-11-06 21:30:49,922 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba2040049/f0eb7960a08c46cc9627b2937d109e43 [2019-11-06 21:30:49,931 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 21:30:49,933 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 21:30:49,934 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 21:30:49,934 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 21:30:49,938 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 21:30:49,939 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:30:49" (1/1) ... [2019-11-06 21:30:49,941 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3743a8d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:30:49, skipping insertion in model container [2019-11-06 21:30:49,941 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:30:49" (1/1) ... [2019-11-06 21:30:49,948 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 21:30:50,028 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 21:30:50,755 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 21:30:50,774 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 21:30:50,978 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 21:30:51,069 INFO L192 MainTranslator]: Completed translation [2019-11-06 21:30:51,070 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:30:51 WrapperNode [2019-11-06 21:30:51,071 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 21:30:51,072 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 21:30:51,072 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 21:30:51,072 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 21:30:51,086 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:30:51" (1/1) ... [2019-11-06 21:30:51,086 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:30:51" (1/1) ... [2019-11-06 21:30:51,143 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:30:51" (1/1) ... [2019-11-06 21:30:51,144 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:30:51" (1/1) ... [2019-11-06 21:30:51,226 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:30:51" (1/1) ... [2019-11-06 21:30:51,263 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:30:51" (1/1) ... [2019-11-06 21:30:51,278 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:30:51" (1/1) ... [2019-11-06 21:30:51,305 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 21:30:51,306 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 21:30:51,306 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 21:30:51,306 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 21:30:51,307 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:30:51" (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 21:30:51,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 21:30:51,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 21:30:51,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-06 21:30:51,380 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-11-06 21:30:51,381 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-11-06 21:30:51,382 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-06 21:30:51,382 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-06 21:30:51,382 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-06 21:30:51,382 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-06 21:30:51,382 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-06 21:30:51,383 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-06 21:30:51,383 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2019-11-06 21:30:51,383 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__2 [2019-11-06 21:30:51,384 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__3 [2019-11-06 21:30:51,385 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__4 [2019-11-06 21:30:51,385 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-11-06 21:30:51,387 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-11-06 21:30:51,388 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-11-06 21:30:51,389 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-11-06 21:30:51,389 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-11-06 21:30:51,389 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-11-06 21:30:51,389 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-11-06 21:30:51,390 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-11-06 21:30:51,390 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-11-06 21:30:51,390 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-11-06 21:30:51,390 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-11-06 21:30:51,391 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-11-06 21:30:51,391 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-11-06 21:30:51,391 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-11-06 21:30:51,391 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-06 21:30:51,391 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-11-06 21:30:51,391 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 21:30:51,392 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-11-06 21:30:51,392 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-11-06 21:30:51,392 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-11-06 21:30:51,392 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-06 21:30:51,392 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-06 21:30:51,393 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-06 21:30:51,393 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-06 21:30:51,393 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-06 21:30:51,393 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-11-06 21:30:51,393 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-11-06 21:30:51,393 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-11-06 21:30:51,394 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-11-06 21:30:51,394 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-11-06 21:30:51,394 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-11-06 21:30:51,394 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-11-06 21:30:51,395 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-11-06 21:30:51,395 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-11-06 21:30:51,395 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-11-06 21:30:51,395 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-11-06 21:30:51,395 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-11-06 21:30:51,395 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-11-06 21:30:51,396 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-11-06 21:30:51,396 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-11-06 21:30:51,396 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-11-06 21:30:51,396 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2019-11-06 21:30:51,396 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__twothirdsfull [2019-11-06 21:30:51,396 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-11-06 21:30:51,397 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-11-06 21:30:51,397 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-11-06 21:30:51,397 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-11-06 21:30:51,397 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2019-11-06 21:30:51,398 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-11-06 21:30:51,398 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-11-06 21:30:51,398 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-11-06 21:30:51,398 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-11-06 21:30:51,398 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-11-06 21:30:51,399 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-11-06 21:30:51,399 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-11-06 21:30:51,399 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-11-06 21:30:51,399 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-06 21:30:51,400 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-11-06 21:30:51,400 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-11-06 21:30:51,401 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-11-06 21:30:51,401 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-11-06 21:30:51,401 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-11-06 21:30:51,401 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-11-06 21:30:51,401 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-11-06 21:30:51,401 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-11-06 21:30:51,402 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 21:30:51,402 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 21:30:51,402 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-11-06 21:30:51,403 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-11-06 21:30:51,403 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-11-06 21:30:51,403 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-11-06 21:30:51,403 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-11-06 21:30:51,404 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-11-06 21:30:51,404 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-11-06 21:30:51,404 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-11-06 21:30:51,404 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-11-06 21:30:51,405 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-06 21:30:51,405 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-06 21:30:51,406 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-06 21:30:51,406 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-06 21:30:51,406 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-06 21:30:51,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-06 21:30:51,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-06 21:30:51,406 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-06 21:30:51,406 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-06 21:30:51,407 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-06 21:30:51,407 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-06 21:30:51,407 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-06 21:30:51,407 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-06 21:30:51,407 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-06 21:30:51,407 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-06 21:30:51,407 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-06 21:30:51,408 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-06 21:30:51,408 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-06 21:30:51,408 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-11-06 21:30:51,408 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-11-06 21:30:51,408 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2019-11-06 21:30:51,408 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__2 [2019-11-06 21:30:51,408 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__3 [2019-11-06 21:30:51,409 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__4 [2019-11-06 21:30:51,409 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-06 21:30:51,409 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-11-06 21:30:51,409 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-11-06 21:30:51,410 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-11-06 21:30:51,410 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-11-06 21:30:51,410 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-11-06 21:30:51,410 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-11-06 21:30:51,411 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-11-06 21:30:51,411 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-11-06 21:30:51,412 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-11-06 21:30:51,412 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-11-06 21:30:51,412 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-11-06 21:30:51,412 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-11-06 21:30:51,412 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-11-06 21:30:51,413 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-11-06 21:30:51,413 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-11-06 21:30:51,413 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-06 21:30:51,413 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-06 21:30:51,413 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-11-06 21:30:51,413 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-06 21:30:51,414 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-06 21:30:51,414 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-06 21:30:51,414 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 21:30:51,414 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-11-06 21:30:51,415 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-11-06 21:30:51,418 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-06 21:30:51,418 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-06 21:30:51,419 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-11-06 21:30:51,419 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-11-06 21:30:51,425 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-11-06 21:30:51,425 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-11-06 21:30:51,425 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-11-06 21:30:51,425 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-11-06 21:30:51,426 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-11-06 21:30:51,427 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-11-06 21:30:51,427 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-11-06 21:30:51,427 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-11-06 21:30:51,427 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-11-06 21:30:51,427 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-11-06 21:30:51,428 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-11-06 21:30:51,428 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-11-06 21:30:51,428 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-11-06 21:30:51,428 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-11-06 21:30:51,428 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-11-06 21:30:51,428 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-11-06 21:30:51,428 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-11-06 21:30:51,428 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2019-11-06 21:30:51,429 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__twothirdsfull [2019-11-06 21:30:51,429 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-11-06 21:30:51,429 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-11-06 21:30:51,429 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-11-06 21:30:51,429 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2019-11-06 21:30:51,429 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-11-06 21:30:51,429 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-11-06 21:30:51,429 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-11-06 21:30:51,430 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-11-06 21:30:51,430 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-11-06 21:30:51,430 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 21:30:51,430 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-06 21:30:51,430 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 21:30:53,724 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 21:30:53,724 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-11-06 21:30:53,727 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:30:53 BoogieIcfgContainer [2019-11-06 21:30:53,727 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 21:30:53,728 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 21:30:53,728 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 21:30:53,731 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 21:30:53,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:30:49" (1/3) ... [2019-11-06 21:30:53,732 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41acc2e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:30:53, skipping insertion in model container [2019-11-06 21:30:53,733 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:30:51" (2/3) ... [2019-11-06 21:30:53,733 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41acc2e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:30:53, skipping insertion in model container [2019-11-06 21:30:53,733 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:30:53" (3/3) ... [2019-11-06 21:30:53,736 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product23.cil.c [2019-11-06 21:30:53,745 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 21:30:53,756 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 21:30:53,767 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 21:30:53,819 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 21:30:53,819 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 21:30:53,819 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 21:30:53,819 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 21:30:53,820 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 21:30:53,820 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 21:30:53,820 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 21:30:53,820 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 21:30:53,867 INFO L276 IsEmpty]: Start isEmpty. Operand 802 states. [2019-11-06 21:30:53,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2019-11-06 21:30:53,902 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:30:53,903 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:30:53,905 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:30:53,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:30:53,910 INFO L82 PathProgramCache]: Analyzing trace with hash 253029278, now seen corresponding path program 1 times [2019-11-06 21:30:53,920 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:30:53,920 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983943221] [2019-11-06 21:30:53,920 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:30:54,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:55,439 WARN L191 SmtUtils]: Spent 983.00 ms on a formula simplification that was a NOOP. DAG size: 391 [2019-11-06 21:30:55,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:55,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:55,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:55,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:55,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:55,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:55,764 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-11-06 21:30:55,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:55,942 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-11-06 21:30:55,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:55,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:55,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:56,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:56,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:56,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:56,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:56,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:56,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:56,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:56,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:56,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:56,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:56,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:56,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:56,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:56,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:56,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:56,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:56,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:56,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:56,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:56,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:56,466 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-11-06 21:30:56,466 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983943221] [2019-11-06 21:30:56,467 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1027781699] [2019-11-06 21:30:56,468 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 21:30:57,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:57,094 INFO L256 TraceCheckSpWp]: Trace formula consists of 3286 conjuncts, 1 conjunts are in the unsatisfiable core [2019-11-06 21:30:57,122 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:30:57,167 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-11-06 21:30:57,168 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:30:57,168 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [10] total 10 [2019-11-06 21:30:57,172 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825299815] [2019-11-06 21:30:57,179 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-06 21:30:57,179 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:30:57,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-06 21:30:57,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2019-11-06 21:30:57,193 INFO L87 Difference]: Start difference. First operand 802 states. Second operand 2 states. [2019-11-06 21:30:57,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:30:57,274 INFO L93 Difference]: Finished difference Result 685 states and 1081 transitions. [2019-11-06 21:30:57,274 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-06 21:30:57,275 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 164 [2019-11-06 21:30:57,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:30:57,322 INFO L225 Difference]: With dead ends: 685 [2019-11-06 21:30:57,322 INFO L226 Difference]: Without dead ends: 648 [2019-11-06 21:30:57,327 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2019-11-06 21:30:57,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2019-11-06 21:30:57,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 648. [2019-11-06 21:30:57,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 648 states. [2019-11-06 21:30:57,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 648 states to 648 states and 1026 transitions. [2019-11-06 21:30:57,451 INFO L78 Accepts]: Start accepts. Automaton has 648 states and 1026 transitions. Word has length 164 [2019-11-06 21:30:57,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:30:57,457 INFO L462 AbstractCegarLoop]: Abstraction has 648 states and 1026 transitions. [2019-11-06 21:30:57,458 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-06 21:30:57,458 INFO L276 IsEmpty]: Start isEmpty. Operand 648 states and 1026 transitions. [2019-11-06 21:30:57,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2019-11-06 21:30:57,470 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:30:57,470 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:30:57,676 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:30:57,677 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:30:57,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:30:57,677 INFO L82 PathProgramCache]: Analyzing trace with hash 398552141, now seen corresponding path program 1 times [2019-11-06 21:30:57,677 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:30:57,677 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021908209] [2019-11-06 21:30:57,678 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:30:57,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:58,730 WARN L191 SmtUtils]: Spent 869.00 ms on a formula simplification that was a NOOP. DAG size: 391 [2019-11-06 21:30:58,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:58,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:58,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:58,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:58,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:58,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:58,997 WARN L191 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-11-06 21:30:59,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:59,169 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-11-06 21:30:59,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:59,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:59,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:59,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:59,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:59,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:59,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:59,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:59,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:59,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:59,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:59,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:59,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:59,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:59,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:59,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:59,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:59,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:59,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:59,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:59,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:59,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:59,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:59,749 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-11-06 21:30:59,749 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021908209] [2019-11-06 21:30:59,749 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [189021641] [2019-11-06 21:30:59,749 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 21:31:00,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:00,345 INFO L256 TraceCheckSpWp]: Trace formula consists of 3289 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-06 21:31:00,355 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:31:00,410 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-11-06 21:31:00,411 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:31:00,411 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2019-11-06 21:31:00,412 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257872303] [2019-11-06 21:31:00,417 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 21:31:00,418 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:31:00,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 21:31:00,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2019-11-06 21:31:00,419 INFO L87 Difference]: Start difference. First operand 648 states and 1026 transitions. Second operand 3 states. [2019-11-06 21:31:00,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:31:00,626 INFO L93 Difference]: Finished difference Result 1721 states and 2761 transitions. [2019-11-06 21:31:00,626 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 21:31:00,626 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 166 [2019-11-06 21:31:00,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:31:00,645 INFO L225 Difference]: With dead ends: 1721 [2019-11-06 21:31:00,646 INFO L226 Difference]: Without dead ends: 1182 [2019-11-06 21:31:00,655 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2019-11-06 21:31:00,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1182 states. [2019-11-06 21:31:00,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1182 to 1160. [2019-11-06 21:31:00,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1160 states. [2019-11-06 21:31:00,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1160 states to 1160 states and 1857 transitions. [2019-11-06 21:31:00,751 INFO L78 Accepts]: Start accepts. Automaton has 1160 states and 1857 transitions. Word has length 166 [2019-11-06 21:31:00,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:31:00,753 INFO L462 AbstractCegarLoop]: Abstraction has 1160 states and 1857 transitions. [2019-11-06 21:31:00,753 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 21:31:00,753 INFO L276 IsEmpty]: Start isEmpty. Operand 1160 states and 1857 transitions. [2019-11-06 21:31:00,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2019-11-06 21:31:00,761 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:31:00,761 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:31:00,968 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:31:00,969 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:31:00,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:31:00,970 INFO L82 PathProgramCache]: Analyzing trace with hash 1100152015, now seen corresponding path program 1 times [2019-11-06 21:31:00,970 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:31:00,970 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968123609] [2019-11-06 21:31:00,971 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:31:01,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:01,986 WARN L191 SmtUtils]: Spent 889.00 ms on a formula simplification that was a NOOP. DAG size: 391 [2019-11-06 21:31:01,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:02,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:02,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:02,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:02,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:02,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:02,298 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-11-06 21:31:02,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:02,461 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-11-06 21:31:02,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:02,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:02,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:02,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:02,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:02,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:02,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:02,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:02,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:02,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:02,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:02,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:02,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:02,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:02,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:02,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:02,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:02,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:02,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:02,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:02,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:02,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:02,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:02,927 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-11-06 21:31:02,928 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968123609] [2019-11-06 21:31:02,928 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1752645855] [2019-11-06 21:31:02,928 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 21:31:03,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:03,710 INFO L256 TraceCheckSpWp]: Trace formula consists of 3288 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-06 21:31:03,718 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:31:03,802 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-11-06 21:31:03,802 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:31:03,803 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2019-11-06 21:31:03,803 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426244479] [2019-11-06 21:31:03,804 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 21:31:03,804 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:31:03,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 21:31:03,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-11-06 21:31:03,806 INFO L87 Difference]: Start difference. First operand 1160 states and 1857 transitions. Second operand 4 states. [2019-11-06 21:31:03,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:31:03,926 INFO L93 Difference]: Finished difference Result 2292 states and 3687 transitions. [2019-11-06 21:31:03,926 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 21:31:03,926 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 166 [2019-11-06 21:31:03,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:31:03,937 INFO L225 Difference]: With dead ends: 2292 [2019-11-06 21:31:03,937 INFO L226 Difference]: Without dead ends: 1160 [2019-11-06 21:31:03,946 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2019-11-06 21:31:03,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1160 states. [2019-11-06 21:31:04,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1160 to 1160. [2019-11-06 21:31:04,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1160 states. [2019-11-06 21:31:04,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1160 states to 1160 states and 1856 transitions. [2019-11-06 21:31:04,033 INFO L78 Accepts]: Start accepts. Automaton has 1160 states and 1856 transitions. Word has length 166 [2019-11-06 21:31:04,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:31:04,033 INFO L462 AbstractCegarLoop]: Abstraction has 1160 states and 1856 transitions. [2019-11-06 21:31:04,033 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 21:31:04,034 INFO L276 IsEmpty]: Start isEmpty. Operand 1160 states and 1856 transitions. [2019-11-06 21:31:04,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2019-11-06 21:31:04,042 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:31:04,042 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:31:04,259 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:31:04,259 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:31:04,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:31:04,259 INFO L82 PathProgramCache]: Analyzing trace with hash -1455253617, now seen corresponding path program 1 times [2019-11-06 21:31:04,260 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:31:04,260 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601303924] [2019-11-06 21:31:04,260 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:31:04,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:05,301 WARN L191 SmtUtils]: Spent 930.00 ms on a formula simplification that was a NOOP. DAG size: 391 [2019-11-06 21:31:05,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:05,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:05,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:05,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:05,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:05,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:05,648 WARN L191 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-11-06 21:31:05,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:05,852 WARN L191 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-11-06 21:31:05,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:05,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:05,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:05,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:05,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:05,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:05,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:05,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:05,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:05,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:06,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:06,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:06,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:06,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:06,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:06,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:06,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:06,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:06,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:06,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:06,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:06,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:06,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:06,274 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-11-06 21:31:06,275 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601303924] [2019-11-06 21:31:06,275 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1096939523] [2019-11-06 21:31:06,275 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 21:31:06,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:06,827 INFO L256 TraceCheckSpWp]: Trace formula consists of 3290 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-06 21:31:06,838 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:31:06,961 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-11-06 21:31:06,961 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:31:06,962 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2019-11-06 21:31:06,962 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4197183] [2019-11-06 21:31:06,963 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 21:31:06,963 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:31:06,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 21:31:06,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-11-06 21:31:06,964 INFO L87 Difference]: Start difference. First operand 1160 states and 1856 transitions. Second operand 4 states. [2019-11-06 21:31:07,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:31:07,069 INFO L93 Difference]: Finished difference Result 2292 states and 3685 transitions. [2019-11-06 21:31:07,070 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 21:31:07,070 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 168 [2019-11-06 21:31:07,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:31:07,079 INFO L225 Difference]: With dead ends: 2292 [2019-11-06 21:31:07,079 INFO L226 Difference]: Without dead ends: 1160 [2019-11-06 21:31:07,085 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2019-11-06 21:31:07,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1160 states. [2019-11-06 21:31:07,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1160 to 1160. [2019-11-06 21:31:07,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1160 states. [2019-11-06 21:31:07,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1160 states to 1160 states and 1855 transitions. [2019-11-06 21:31:07,133 INFO L78 Accepts]: Start accepts. Automaton has 1160 states and 1855 transitions. Word has length 168 [2019-11-06 21:31:07,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:31:07,133 INFO L462 AbstractCegarLoop]: Abstraction has 1160 states and 1855 transitions. [2019-11-06 21:31:07,133 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 21:31:07,134 INFO L276 IsEmpty]: Start isEmpty. Operand 1160 states and 1855 transitions. [2019-11-06 21:31:07,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2019-11-06 21:31:07,139 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:31:07,139 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:31:07,347 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:31:07,347 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:31:07,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:31:07,348 INFO L82 PathProgramCache]: Analyzing trace with hash 1896519639, now seen corresponding path program 1 times [2019-11-06 21:31:07,348 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:31:07,348 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991882397] [2019-11-06 21:31:07,349 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:31:07,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:08,452 WARN L191 SmtUtils]: Spent 964.00 ms on a formula simplification that was a NOOP. DAG size: 391 [2019-11-06 21:31:08,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:08,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:08,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:08,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:08,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:08,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:08,693 WARN L191 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-11-06 21:31:08,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:08,856 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-11-06 21:31:08,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:08,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:08,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:08,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:08,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:08,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:08,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:08,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:08,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:08,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:09,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:09,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:09,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:09,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:09,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:09,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:09,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:09,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:09,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:09,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:09,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:09,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:09,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:09,430 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-11-06 21:31:09,431 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991882397] [2019-11-06 21:31:09,431 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [985926130] [2019-11-06 21:31:09,431 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 21:31:09,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:09,985 INFO L256 TraceCheckSpWp]: Trace formula consists of 3292 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-06 21:31:09,992 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:31:10,043 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-11-06 21:31:10,044 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:31:10,044 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2019-11-06 21:31:10,044 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492586655] [2019-11-06 21:31:10,045 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 21:31:10,045 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:31:10,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 21:31:10,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-11-06 21:31:10,046 INFO L87 Difference]: Start difference. First operand 1160 states and 1855 transitions. Second operand 4 states. [2019-11-06 21:31:10,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:31:10,143 INFO L93 Difference]: Finished difference Result 2299 states and 3692 transitions. [2019-11-06 21:31:10,144 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 21:31:10,144 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 170 [2019-11-06 21:31:10,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:31:10,157 INFO L225 Difference]: With dead ends: 2299 [2019-11-06 21:31:10,157 INFO L226 Difference]: Without dead ends: 1169 [2019-11-06 21:31:10,165 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2019-11-06 21:31:10,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1169 states. [2019-11-06 21:31:10,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1169 to 1169. [2019-11-06 21:31:10,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1169 states. [2019-11-06 21:31:10,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1169 states to 1169 states and 1867 transitions. [2019-11-06 21:31:10,226 INFO L78 Accepts]: Start accepts. Automaton has 1169 states and 1867 transitions. Word has length 170 [2019-11-06 21:31:10,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:31:10,227 INFO L462 AbstractCegarLoop]: Abstraction has 1169 states and 1867 transitions. [2019-11-06 21:31:10,227 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 21:31:10,227 INFO L276 IsEmpty]: Start isEmpty. Operand 1169 states and 1867 transitions. [2019-11-06 21:31:10,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2019-11-06 21:31:10,235 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:31:10,236 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:31:10,452 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:31:10,453 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:31:10,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:31:10,453 INFO L82 PathProgramCache]: Analyzing trace with hash 1839187851, now seen corresponding path program 1 times [2019-11-06 21:31:10,453 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:31:10,454 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342247658] [2019-11-06 21:31:10,454 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:31:10,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:11,576 WARN L191 SmtUtils]: Spent 967.00 ms on a formula simplification that was a NOOP. DAG size: 391 [2019-11-06 21:31:11,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:11,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:11,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:11,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:11,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:11,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:11,818 WARN L191 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-11-06 21:31:11,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:11,985 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-11-06 21:31:11,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:11,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:12,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:12,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:12,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:12,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:12,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:12,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:12,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:12,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:12,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:12,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:12,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:12,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:12,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:12,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:12,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:12,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:12,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:12,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:12,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:12,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:12,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:12,412 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-11-06 21:31:12,413 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342247658] [2019-11-06 21:31:12,414 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1893969012] [2019-11-06 21:31:12,414 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 21:31:12,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:13,009 INFO L256 TraceCheckSpWp]: Trace formula consists of 3293 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-06 21:31:13,016 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:31:13,071 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-11-06 21:31:13,072 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:31:13,072 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2019-11-06 21:31:13,074 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113662172] [2019-11-06 21:31:13,074 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 21:31:13,074 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:31:13,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 21:31:13,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-11-06 21:31:13,076 INFO L87 Difference]: Start difference. First operand 1169 states and 1867 transitions. Second operand 4 states. [2019-11-06 21:31:13,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:31:13,174 INFO L93 Difference]: Finished difference Result 2301 states and 3693 transitions. [2019-11-06 21:31:13,174 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 21:31:13,174 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 171 [2019-11-06 21:31:13,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:31:13,183 INFO L225 Difference]: With dead ends: 2301 [2019-11-06 21:31:13,183 INFO L226 Difference]: Without dead ends: 1169 [2019-11-06 21:31:13,190 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2019-11-06 21:31:13,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1169 states. [2019-11-06 21:31:13,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1169 to 1169. [2019-11-06 21:31:13,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1169 states. [2019-11-06 21:31:13,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1169 states to 1169 states and 1866 transitions. [2019-11-06 21:31:13,240 INFO L78 Accepts]: Start accepts. Automaton has 1169 states and 1866 transitions. Word has length 171 [2019-11-06 21:31:13,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:31:13,243 INFO L462 AbstractCegarLoop]: Abstraction has 1169 states and 1866 transitions. [2019-11-06 21:31:13,243 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 21:31:13,243 INFO L276 IsEmpty]: Start isEmpty. Operand 1169 states and 1866 transitions. [2019-11-06 21:31:13,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2019-11-06 21:31:13,248 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:31:13,249 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:31:13,464 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:31:13,464 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:31:13,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:31:13,465 INFO L82 PathProgramCache]: Analyzing trace with hash 201198171, now seen corresponding path program 1 times [2019-11-06 21:31:13,465 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:31:13,465 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260214822] [2019-11-06 21:31:13,465 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:31:13,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:14,402 WARN L191 SmtUtils]: Spent 842.00 ms on a formula simplification that was a NOOP. DAG size: 391 [2019-11-06 21:31:14,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:14,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:14,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:14,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:14,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:14,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:14,651 WARN L191 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-11-06 21:31:14,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:14,797 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-11-06 21:31:14,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:14,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:14,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:14,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:14,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:14,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:14,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:14,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:14,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:14,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:14,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:14,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:14,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:14,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:14,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:14,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:14,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:14,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:14,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:14,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:14,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:14,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:14,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:15,078 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-11-06 21:31:15,079 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260214822] [2019-11-06 21:31:15,079 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1100756730] [2019-11-06 21:31:15,079 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 21:31:15,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:15,702 INFO L256 TraceCheckSpWp]: Trace formula consists of 3294 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-06 21:31:15,706 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:31:15,753 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-11-06 21:31:15,754 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:31:15,754 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2019-11-06 21:31:15,757 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816672353] [2019-11-06 21:31:15,757 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 21:31:15,757 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:31:15,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 21:31:15,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-11-06 21:31:15,758 INFO L87 Difference]: Start difference. First operand 1169 states and 1866 transitions. Second operand 4 states. [2019-11-06 21:31:15,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:31:15,856 INFO L93 Difference]: Finished difference Result 2301 states and 3692 transitions. [2019-11-06 21:31:15,857 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 21:31:15,857 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 172 [2019-11-06 21:31:15,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:31:15,865 INFO L225 Difference]: With dead ends: 2301 [2019-11-06 21:31:15,865 INFO L226 Difference]: Without dead ends: 1169 [2019-11-06 21:31:15,872 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2019-11-06 21:31:15,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1169 states. [2019-11-06 21:31:15,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1169 to 1169. [2019-11-06 21:31:15,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1169 states. [2019-11-06 21:31:15,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1169 states to 1169 states and 1865 transitions. [2019-11-06 21:31:15,924 INFO L78 Accepts]: Start accepts. Automaton has 1169 states and 1865 transitions. Word has length 172 [2019-11-06 21:31:15,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:31:15,924 INFO L462 AbstractCegarLoop]: Abstraction has 1169 states and 1865 transitions. [2019-11-06 21:31:15,924 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 21:31:15,924 INFO L276 IsEmpty]: Start isEmpty. Operand 1169 states and 1865 transitions. [2019-11-06 21:31:15,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2019-11-06 21:31:15,930 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:31:15,931 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:31:16,142 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:31:16,142 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:31:16,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:31:16,143 INFO L82 PathProgramCache]: Analyzing trace with hash 1102421391, now seen corresponding path program 1 times [2019-11-06 21:31:16,143 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:31:16,144 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678184250] [2019-11-06 21:31:16,144 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:31:16,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:17,214 WARN L191 SmtUtils]: Spent 864.00 ms on a formula simplification that was a NOOP. DAG size: 391 [2019-11-06 21:31:17,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:17,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:17,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:17,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:17,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:17,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:17,519 WARN L191 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-11-06 21:31:17,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:17,706 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-11-06 21:31:17,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:17,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:17,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:17,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:17,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:17,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:17,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:17,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:17,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:17,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:17,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:17,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:17,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:17,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:17,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:17,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:17,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:17,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:17,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:17,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:17,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:17,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:17,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:18,109 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-11-06 21:31:18,109 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678184250] [2019-11-06 21:31:18,109 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [382620976] [2019-11-06 21:31:18,110 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 21:31:18,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:18,724 INFO L256 TraceCheckSpWp]: Trace formula consists of 3295 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-06 21:31:18,729 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:31:18,866 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-11-06 21:31:18,867 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:31:18,867 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [16] total 21 [2019-11-06 21:31:18,867 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262034290] [2019-11-06 21:31:18,868 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-06 21:31:18,868 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:31:18,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-06 21:31:18,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=364, Unknown=0, NotChecked=0, Total=420 [2019-11-06 21:31:18,869 INFO L87 Difference]: Start difference. First operand 1169 states and 1865 transitions. Second operand 7 states. [2019-11-06 21:31:19,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:31:19,031 INFO L93 Difference]: Finished difference Result 2308 states and 3701 transitions. [2019-11-06 21:31:19,031 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-06 21:31:19,031 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 173 [2019-11-06 21:31:19,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:31:19,041 INFO L225 Difference]: With dead ends: 2308 [2019-11-06 21:31:19,041 INFO L226 Difference]: Without dead ends: 1180 [2019-11-06 21:31:19,047 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=60, Invalid=402, Unknown=0, NotChecked=0, Total=462 [2019-11-06 21:31:19,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1180 states. [2019-11-06 21:31:19,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1180 to 1176. [2019-11-06 21:31:19,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1176 states. [2019-11-06 21:31:19,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1176 states to 1176 states and 1875 transitions. [2019-11-06 21:31:19,094 INFO L78 Accepts]: Start accepts. Automaton has 1176 states and 1875 transitions. Word has length 173 [2019-11-06 21:31:19,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:31:19,095 INFO L462 AbstractCegarLoop]: Abstraction has 1176 states and 1875 transitions. [2019-11-06 21:31:19,095 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-06 21:31:19,095 INFO L276 IsEmpty]: Start isEmpty. Operand 1176 states and 1875 transitions. [2019-11-06 21:31:19,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2019-11-06 21:31:19,100 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:31:19,101 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:31:19,308 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:31:19,309 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:31:19,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:31:19,309 INFO L82 PathProgramCache]: Analyzing trace with hash 849321655, now seen corresponding path program 1 times [2019-11-06 21:31:19,309 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:31:19,310 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49796148] [2019-11-06 21:31:19,310 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:31:19,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:20,309 WARN L191 SmtUtils]: Spent 858.00 ms on a formula simplification that was a NOOP. DAG size: 391 [2019-11-06 21:31:20,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:20,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:20,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:20,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:20,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:20,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:20,563 WARN L191 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-11-06 21:31:20,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:20,732 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-11-06 21:31:20,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:20,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:20,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:20,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:20,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:21,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:21,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:21,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:21,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:21,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:21,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:21,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:21,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:21,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:21,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:21,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:21,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:21,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:21,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:21,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:21,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:21,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:21,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:21,470 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2019-11-06 21:31:21,471 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49796148] [2019-11-06 21:31:21,471 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1552748060] [2019-11-06 21:31:21,471 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