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_product28.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 19:21:06,708 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 19:21:06,710 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 19:21:06,728 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 19:21:06,728 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 19:21:06,730 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 19:21:06,732 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 19:21:06,741 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 19:21:06,745 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 19:21:06,747 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 19:21:06,749 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 19:21:06,751 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 19:21:06,751 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 19:21:06,753 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 19:21:06,755 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 19:21:06,757 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 19:21:06,758 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 19:21:06,759 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 19:21:06,760 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 19:21:06,765 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 19:21:06,770 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 19:21:06,772 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 19:21:06,775 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 19:21:06,776 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 19:21:06,778 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 19:21:06,779 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 19:21:06,779 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 19:21:06,780 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 19:21:06,782 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 19:21:06,783 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 19:21:06,783 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 19:21:06,785 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 19:21:06,786 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 19:21:06,786 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 19:21:06,788 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 19:21:06,789 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 19:21:06,789 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 19:21:06,789 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 19:21:06,790 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 19:21:06,790 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 19:21:06,792 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 19:21:06,792 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 19:21:06,826 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 19:21:06,826 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 19:21:06,827 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 19:21:06,828 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 19:21:06,828 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 19:21:06,830 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 19:21:06,830 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 19:21:06,831 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 19:21:06,831 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 19:21:06,831 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 19:21:06,831 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 19:21:06,831 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 19:21:06,832 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 19:21:06,832 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 19:21:06,832 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 19:21:06,834 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 19:21:06,834 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 19:21:06,835 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 19:21:06,835 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 19:21:06,835 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 19:21:06,835 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 19:21:06,835 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:21:06,836 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 19:21:06,836 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 19:21:06,836 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 19:21:06,836 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 19:21:06,836 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 19:21:06,837 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 19:21:06,837 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-13 19:21:07,095 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 19:21:07,110 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 19:21:07,114 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 19:21:07,115 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 19:21:07,116 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 19:21:07,116 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec1_product28.cil.c [2019-10-13 19:21:07,191 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cca2ac646/df6dfd83005444cfb109dc33d972ee93/FLAGdb9abdbfc [2019-10-13 19:21:07,807 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 19:21:07,808 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec1_product28.cil.c [2019-10-13 19:21:07,838 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cca2ac646/df6dfd83005444cfb109dc33d972ee93/FLAGdb9abdbfc [2019-10-13 19:21:08,021 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cca2ac646/df6dfd83005444cfb109dc33d972ee93 [2019-10-13 19:21:08,030 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 19:21:08,032 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 19:21:08,032 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 19:21:08,033 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 19:21:08,036 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 19:21:08,037 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:21:08" (1/1) ... [2019-10-13 19:21:08,040 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49584703 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:21:08, skipping insertion in model container [2019-10-13 19:21:08,040 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:21:08" (1/1) ... [2019-10-13 19:21:08,047 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 19:21:08,135 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 19:21:08,821 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:21:08,843 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 19:21:08,975 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:21:09,046 INFO L192 MainTranslator]: Completed translation [2019-10-13 19:21:09,047 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:21:09 WrapperNode [2019-10-13 19:21:09,047 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 19:21:09,048 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 19:21:09,048 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 19:21:09,048 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 19:21:09,060 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:21:09" (1/1) ... [2019-10-13 19:21:09,061 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:21:09" (1/1) ... [2019-10-13 19:21:09,093 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:21:09" (1/1) ... [2019-10-13 19:21:09,094 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:21:09" (1/1) ... [2019-10-13 19:21:09,166 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:21:09" (1/1) ... [2019-10-13 19:21:09,211 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:21:09" (1/1) ... [2019-10-13 19:21:09,233 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:21:09" (1/1) ... [2019-10-13 19:21:09,260 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 19:21:09,261 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 19:21:09,261 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 19:21:09,261 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 19:21:09,262 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:21:09" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:21:09,338 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 19:21:09,339 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 19:21:09,339 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 19:21:09,339 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-13 19:21:09,340 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-13 19:21:09,341 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-13 19:21:09,341 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-13 19:21:09,341 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-13 19:21:09,342 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-13 19:21:09,342 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-13 19:21:09,342 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-13 19:21:09,343 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 19:21:09,343 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-13 19:21:09,344 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-13 19:21:09,345 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-13 19:21:09,345 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 19:21:09,347 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-13 19:21:09,347 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 19:21:09,348 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 19:21:09,348 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 19:21:09,348 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-13 19:21:09,348 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-13 19:21:09,349 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-13 19:21:09,349 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 19:21:09,349 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 19:21:09,349 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 19:21:09,349 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 19:21:09,350 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2019-10-13 19:21:09,350 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__2 [2019-10-13 19:21:09,350 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__3 [2019-10-13 19:21:09,350 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__4 [2019-10-13 19:21:09,350 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-13 19:21:09,351 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-13 19:21:09,351 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-13 19:21:09,351 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-13 19:21:09,351 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-13 19:21:09,351 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-13 19:21:09,352 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-13 19:21:09,352 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-13 19:21:09,352 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-13 19:21:09,352 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-13 19:21:09,353 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-13 19:21:09,353 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-13 19:21:09,353 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-13 19:21:09,353 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-13 19:21:09,353 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-13 19:21:09,354 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-13 19:21:09,354 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__weight [2019-10-13 19:21:09,354 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-13 19:21:09,354 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-13 19:21:09,354 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-13 19:21:09,354 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-13 19:21:09,355 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-13 19:21:09,355 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-13 19:21:09,355 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-13 19:21:09,355 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-13 19:21:09,355 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-13 19:21:09,355 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-13 19:21:09,356 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2019-10-13 19:21:09,356 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-13 19:21:09,356 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-13 19:21:09,356 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-13 19:21:09,356 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-13 19:21:09,356 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-13 19:21:09,357 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-13 19:21:09,357 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-13 19:21:09,357 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2019-10-13 19:21:09,357 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 19:21:09,357 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__wrappee__executivefloor [2019-10-13 19:21:09,358 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-13 19:21:09,358 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-13 19:21:09,358 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-10-13 19:21:09,358 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-10-13 19:21:09,359 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 19:21:09,359 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 19:21:09,360 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 19:21:09,360 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 19:21:09,360 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 19:21:09,360 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 19:21:09,360 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 19:21:09,360 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 19:21:09,361 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 19:21:09,361 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 19:21:09,362 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 19:21:09,362 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-13 19:21:09,362 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-13 19:21:09,362 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-13 19:21:09,363 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-13 19:21:09,363 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-13 19:21:09,363 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-13 19:21:09,364 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-13 19:21:09,364 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-13 19:21:09,365 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-13 19:21:09,365 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 19:21:09,365 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-13 19:21:09,365 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-13 19:21:09,365 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-13 19:21:09,365 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 19:21:09,366 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-13 19:21:09,366 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-13 19:21:09,366 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-13 19:21:09,366 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-13 19:21:09,366 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-13 19:21:09,367 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 19:21:09,367 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-13 19:21:09,367 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 19:21:09,367 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2019-10-13 19:21:09,367 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__4 [2019-10-13 19:21:09,367 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 19:21:09,368 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 19:21:09,368 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 19:21:09,368 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 19:21:09,368 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 19:21:09,368 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 19:21:09,368 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-13 19:21:09,369 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-13 19:21:09,369 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 19:21:09,369 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 19:21:09,369 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-13 19:21:09,370 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-13 19:21:09,370 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__2 [2019-10-13 19:21:09,370 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__3 [2019-10-13 19:21:09,370 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-13 19:21:09,371 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-13 19:21:09,372 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-13 19:21:09,372 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-13 19:21:09,372 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-13 19:21:09,372 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-13 19:21:09,373 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-13 19:21:09,373 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-13 19:21:09,373 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-13 19:21:09,373 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-13 19:21:09,373 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 19:21:09,374 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-13 19:21:09,374 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-13 19:21:09,374 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-13 19:21:09,374 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-13 19:21:09,374 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-10-13 19:21:09,375 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-10-13 19:21:09,375 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-13 19:21:09,378 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-13 19:21:09,379 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__weight [2019-10-13 19:21:09,379 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-13 19:21:09,380 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-13 19:21:09,387 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-13 19:21:09,387 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-13 19:21:09,388 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-13 19:21:09,388 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2019-10-13 19:21:09,388 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-13 19:21:09,388 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-13 19:21:09,388 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-13 19:21:09,388 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-13 19:21:09,388 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-13 19:21:09,388 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-13 19:21:09,389 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2019-10-13 19:21:09,389 INFO L130 BoogieDeclarations]: Found specification of procedure printState__wrappee__executivefloor [2019-10-13 19:21:09,389 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 19:21:09,389 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-13 19:21:09,390 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 19:21:09,390 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 19:21:09,390 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 19:21:09,390 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 19:21:09,390 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 19:21:09,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 19:21:09,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 19:21:09,391 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 19:21:09,391 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 19:21:09,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 19:21:09,391 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 19:21:09,391 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 19:21:09,392 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 19:21:09,392 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 19:21:09,392 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 19:21:09,392 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 19:21:09,392 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 19:21:09,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 19:21:09,392 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 19:21:11,523 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 19:21:11,523 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-13 19:21:11,525 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:21:11 BoogieIcfgContainer [2019-10-13 19:21:11,525 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 19:21:11,527 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 19:21:11,527 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 19:21:11,529 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 19:21:11,530 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:21:08" (1/3) ... [2019-10-13 19:21:11,531 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@90bd385 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:21:11, skipping insertion in model container [2019-10-13 19:21:11,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:21:09" (2/3) ... [2019-10-13 19:21:11,531 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@90bd385 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:21:11, skipping insertion in model container [2019-10-13 19:21:11,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:21:11" (3/3) ... [2019-10-13 19:21:11,533 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product28.cil.c [2019-10-13 19:21:11,542 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 19:21:11,552 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 19:21:11,563 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 19:21:11,605 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 19:21:11,606 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 19:21:11,606 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 19:21:11,606 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 19:21:11,606 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 19:21:11,606 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 19:21:11,606 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 19:21:11,606 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 19:21:11,647 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states. [2019-10-13 19:21:11,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2019-10-13 19:21:11,662 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:21:11,663 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:21:11,665 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:21:11,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:21:11,670 INFO L82 PathProgramCache]: Analyzing trace with hash -837542985, now seen corresponding path program 1 times [2019-10-13 19:21:11,676 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:21:11,677 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093351612] [2019-10-13 19:21:11,677 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:11,677 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:11,677 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:21:12,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:13,189 WARN L191 SmtUtils]: Spent 982.00 ms on a formula simplification that was a NOOP. DAG size: 400 [2019-10-13 19:21:13,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:13,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:13,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:13,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:13,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:13,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:13,521 WARN L191 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-10-13 19:21:13,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:13,731 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-13 19:21:13,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:13,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:13,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:13,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:13,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:13,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:13,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:13,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:13,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:13,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:13,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:13,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:13,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:13,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:13,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:14,035 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-13 19:21:14,035 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093351612] [2019-10-13 19:21:14,036 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [326672798] [2019-10-13 19:21:14,036 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:21:14,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:14,663 INFO L256 TraceCheckSpWp]: Trace formula consists of 3176 conjuncts, 1 conjunts are in the unsatisfiable core [2019-10-13 19:21:14,679 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:21:14,708 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-13 19:21:14,708 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:21:14,709 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2019-10-13 19:21:14,709 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271994435] [2019-10-13 19:21:14,714 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 19:21:14,715 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:21:14,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 19:21:14,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-10-13 19:21:14,731 INFO L87 Difference]: Start difference. First operand 803 states. Second operand 2 states. [2019-10-13 19:21:14,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:21:14,812 INFO L93 Difference]: Finished difference Result 679 states and 1074 transitions. [2019-10-13 19:21:14,812 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 19:21:14,813 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 116 [2019-10-13 19:21:14,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:21:14,857 INFO L225 Difference]: With dead ends: 679 [2019-10-13 19:21:14,857 INFO L226 Difference]: Without dead ends: 642 [2019-10-13 19:21:14,866 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-10-13 19:21:14,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2019-10-13 19:21:14,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 642. [2019-10-13 19:21:14,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 642 states. [2019-10-13 19:21:14,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 1019 transitions. [2019-10-13 19:21:14,985 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 1019 transitions. Word has length 116 [2019-10-13 19:21:14,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:21:14,987 INFO L462 AbstractCegarLoop]: Abstraction has 642 states and 1019 transitions. [2019-10-13 19:21:14,987 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 19:21:14,988 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 1019 transitions. [2019-10-13 19:21:14,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2019-10-13 19:21:14,994 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:21:14,994 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:21:15,209 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:21:15,210 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:21:15,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:21:15,211 INFO L82 PathProgramCache]: Analyzing trace with hash -709376246, now seen corresponding path program 1 times [2019-10-13 19:21:15,212 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:21:15,212 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240740788] [2019-10-13 19:21:15,212 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:15,212 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:15,213 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:21:15,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:16,259 WARN L191 SmtUtils]: Spent 888.00 ms on a formula simplification that was a NOOP. DAG size: 400 [2019-10-13 19:21:16,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:16,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:16,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:16,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:16,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:16,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:16,533 WARN L191 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-10-13 19:21:16,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:16,769 WARN L191 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-13 19:21:16,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:16,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:16,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:16,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:16,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:16,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:16,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:16,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:16,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:16,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:16,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:16,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:16,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:16,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:16,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:17,047 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-13 19:21:17,048 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240740788] [2019-10-13 19:21:17,048 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [3581951] [2019-10-13 19:21:17,048 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:21:17,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:17,571 INFO L256 TraceCheckSpWp]: Trace formula consists of 3179 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:21:17,580 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:21:17,703 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-13 19:21:17,704 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:21:17,704 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2019-10-13 19:21:17,704 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794818064] [2019-10-13 19:21:17,706 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:21:17,706 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:21:17,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:21:17,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2019-10-13 19:21:17,707 INFO L87 Difference]: Start difference. First operand 642 states and 1019 transitions. Second operand 4 states. [2019-10-13 19:21:17,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:21:17,840 INFO L93 Difference]: Finished difference Result 1256 states and 2011 transitions. [2019-10-13 19:21:17,841 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 19:21:17,841 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 118 [2019-10-13 19:21:17,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:21:17,847 INFO L225 Difference]: With dead ends: 1256 [2019-10-13 19:21:17,847 INFO L226 Difference]: Without dead ends: 642 [2019-10-13 19:21:17,854 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:21:17,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2019-10-13 19:21:17,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 642. [2019-10-13 19:21:17,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 642 states. [2019-10-13 19:21:17,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 1018 transitions. [2019-10-13 19:21:17,917 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 1018 transitions. Word has length 118 [2019-10-13 19:21:17,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:21:17,918 INFO L462 AbstractCegarLoop]: Abstraction has 642 states and 1018 transitions. [2019-10-13 19:21:17,918 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:21:17,918 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 1018 transitions. [2019-10-13 19:21:17,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-10-13 19:21:17,931 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:21:17,932 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:21:18,132 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:21:18,133 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:21:18,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:21:18,134 INFO L82 PathProgramCache]: Analyzing trace with hash -1594115156, now seen corresponding path program 1 times [2019-10-13 19:21:18,135 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:21:18,135 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943778609] [2019-10-13 19:21:18,135 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:18,136 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:18,136 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:21:18,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:19,046 WARN L191 SmtUtils]: Spent 799.00 ms on a formula simplification that was a NOOP. DAG size: 400 [2019-10-13 19:21:19,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:19,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:19,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:19,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:19,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:19,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:19,330 WARN L191 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-10-13 19:21:19,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:19,503 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-13 19:21:19,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:19,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:19,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:19,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:19,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:19,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:19,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:19,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:19,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:19,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:19,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:19,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:19,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:19,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:19,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:19,783 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-13 19:21:19,784 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943778609] [2019-10-13 19:21:19,784 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [4701747] [2019-10-13 19:21:19,784 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:21:20,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:20,329 INFO L256 TraceCheckSpWp]: Trace formula consists of 3181 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:21:20,336 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:21:20,391 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-13 19:21:20,391 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:21:20,391 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2019-10-13 19:21:20,392 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355215429] [2019-10-13 19:21:20,393 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:21:20,393 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:21:20,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:21:20,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2019-10-13 19:21:20,394 INFO L87 Difference]: Start difference. First operand 642 states and 1018 transitions. Second operand 4 states. [2019-10-13 19:21:20,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:21:20,511 INFO L93 Difference]: Finished difference Result 1256 states and 2009 transitions. [2019-10-13 19:21:20,511 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 19:21:20,515 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 120 [2019-10-13 19:21:20,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:21:20,526 INFO L225 Difference]: With dead ends: 1256 [2019-10-13 19:21:20,526 INFO L226 Difference]: Without dead ends: 642 [2019-10-13 19:21:20,529 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:21:20,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2019-10-13 19:21:20,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 642. [2019-10-13 19:21:20,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 642 states. [2019-10-13 19:21:20,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 1017 transitions. [2019-10-13 19:21:20,570 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 1017 transitions. Word has length 120 [2019-10-13 19:21:20,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:21:20,571 INFO L462 AbstractCegarLoop]: Abstraction has 642 states and 1017 transitions. [2019-10-13 19:21:20,571 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:21:20,571 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 1017 transitions. [2019-10-13 19:21:20,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2019-10-13 19:21:20,574 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:21:20,574 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:21:20,785 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:21:20,786 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:21:20,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:21:20,786 INFO L82 PathProgramCache]: Analyzing trace with hash -254884654, now seen corresponding path program 1 times [2019-10-13 19:21:20,786 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:21:20,787 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054847182] [2019-10-13 19:21:20,787 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:20,787 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:20,788 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:21:20,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:21,751 WARN L191 SmtUtils]: Spent 815.00 ms on a formula simplification that was a NOOP. DAG size: 400 [2019-10-13 19:21:21,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:21,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:21,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:21,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:21,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:21,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:22,006 WARN L191 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-10-13 19:21:22,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:22,167 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-13 19:21:22,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:22,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:22,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:22,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:22,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:22,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:22,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:22,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:22,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:22,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:22,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:22,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:22,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:22,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:22,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:22,481 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-13 19:21:22,481 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054847182] [2019-10-13 19:21:22,482 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1718448748] [2019-10-13 19:21:22,482 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:21:22,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:22,987 INFO L256 TraceCheckSpWp]: Trace formula consists of 3183 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:21:22,994 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:21:23,049 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-13 19:21:23,050 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:21:23,050 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2019-10-13 19:21:23,050 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234946656] [2019-10-13 19:21:23,052 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:21:23,052 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:21:23,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:21:23,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2019-10-13 19:21:23,053 INFO L87 Difference]: Start difference. First operand 642 states and 1017 transitions. Second operand 4 states. [2019-10-13 19:21:23,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:21:23,149 INFO L93 Difference]: Finished difference Result 1263 states and 2016 transitions. [2019-10-13 19:21:23,150 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:21:23,150 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 122 [2019-10-13 19:21:23,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:21:23,157 INFO L225 Difference]: With dead ends: 1263 [2019-10-13 19:21:23,157 INFO L226 Difference]: Without dead ends: 651 [2019-10-13 19:21:23,160 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:21:23,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2019-10-13 19:21:23,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 651. [2019-10-13 19:21:23,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 651 states. [2019-10-13 19:21:23,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 651 states to 651 states and 1029 transitions. [2019-10-13 19:21:23,191 INFO L78 Accepts]: Start accepts. Automaton has 651 states and 1029 transitions. Word has length 122 [2019-10-13 19:21:23,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:21:23,191 INFO L462 AbstractCegarLoop]: Abstraction has 651 states and 1029 transitions. [2019-10-13 19:21:23,192 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:21:23,192 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states and 1029 transitions. [2019-10-13 19:21:23,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2019-10-13 19:21:23,195 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:21:23,195 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:21:23,402 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:21:23,403 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:21:23,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:21:23,403 INFO L82 PathProgramCache]: Analyzing trace with hash -1100707264, now seen corresponding path program 1 times [2019-10-13 19:21:23,403 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:21:23,404 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854998485] [2019-10-13 19:21:23,404 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:23,404 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:23,404 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:21:23,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:24,383 WARN L191 SmtUtils]: Spent 874.00 ms on a formula simplification that was a NOOP. DAG size: 400 [2019-10-13 19:21:24,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:24,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:24,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:24,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:24,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:24,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:24,613 WARN L191 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-10-13 19:21:24,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:24,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:24,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:24,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:24,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:24,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:24,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:24,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:24,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:24,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:24,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:24,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:24,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:24,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:24,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:24,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:25,031 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-13 19:21:25,031 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854998485] [2019-10-13 19:21:25,031 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1167891864] [2019-10-13 19:21:25,032 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:21:25,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:25,527 INFO L256 TraceCheckSpWp]: Trace formula consists of 3184 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:21:25,532 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:21:25,586 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-13 19:21:25,586 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:21:25,587 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2019-10-13 19:21:25,587 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910683332] [2019-10-13 19:21:25,588 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:21:25,588 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:21:25,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:21:25,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2019-10-13 19:21:25,588 INFO L87 Difference]: Start difference. First operand 651 states and 1029 transitions. Second operand 4 states. [2019-10-13 19:21:25,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:21:25,672 INFO L93 Difference]: Finished difference Result 1265 states and 2017 transitions. [2019-10-13 19:21:25,673 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:21:25,673 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 123 [2019-10-13 19:21:25,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:21:25,680 INFO L225 Difference]: With dead ends: 1265 [2019-10-13 19:21:25,680 INFO L226 Difference]: Without dead ends: 651 [2019-10-13 19:21:25,688 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:21:25,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2019-10-13 19:21:25,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 651. [2019-10-13 19:21:25,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 651 states. [2019-10-13 19:21:25,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 651 states to 651 states and 1028 transitions. [2019-10-13 19:21:25,724 INFO L78 Accepts]: Start accepts. Automaton has 651 states and 1028 transitions. Word has length 123 [2019-10-13 19:21:25,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:21:25,725 INFO L462 AbstractCegarLoop]: Abstraction has 651 states and 1028 transitions. [2019-10-13 19:21:25,725 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:21:25,725 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states and 1028 transitions. [2019-10-13 19:21:25,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2019-10-13 19:21:25,731 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:21:25,732 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:21:25,950 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:21:25,950 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:21:25,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:21:25,951 INFO L82 PathProgramCache]: Analyzing trace with hash 1202095766, now seen corresponding path program 1 times [2019-10-13 19:21:25,951 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:21:25,952 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547643405] [2019-10-13 19:21:25,952 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:25,952 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:25,952 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:21:26,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:27,023 WARN L191 SmtUtils]: Spent 941.00 ms on a formula simplification that was a NOOP. DAG size: 400 [2019-10-13 19:21:27,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:27,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:27,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:27,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:27,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:27,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:27,342 WARN L191 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-10-13 19:21:27,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:27,609 WARN L191 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-13 19:21:27,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:27,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:27,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:27,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:27,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:27,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:27,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:27,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:27,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:27,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:27,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:27,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:27,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:27,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:27,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:27,884 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-13 19:21:27,885 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547643405] [2019-10-13 19:21:27,885 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [501504229] [2019-10-13 19:21:27,885 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:21:28,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:28,420 INFO L256 TraceCheckSpWp]: Trace formula consists of 3185 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:21:28,424 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:21:28,482 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-13 19:21:28,483 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:21:28,483 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2019-10-13 19:21:28,483 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287150260] [2019-10-13 19:21:28,484 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:21:28,484 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:21:28,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:21:28,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2019-10-13 19:21:28,485 INFO L87 Difference]: Start difference. First operand 651 states and 1028 transitions. Second operand 4 states. [2019-10-13 19:21:28,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:21:28,616 INFO L93 Difference]: Finished difference Result 1265 states and 2016 transitions. [2019-10-13 19:21:28,616 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:21:28,617 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 124 [2019-10-13 19:21:28,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:21:28,622 INFO L225 Difference]: With dead ends: 1265 [2019-10-13 19:21:28,622 INFO L226 Difference]: Without dead ends: 651 [2019-10-13 19:21:28,626 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:21:28,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2019-10-13 19:21:28,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 651. [2019-10-13 19:21:28,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 651 states. [2019-10-13 19:21:28,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 651 states to 651 states and 1027 transitions. [2019-10-13 19:21:28,650 INFO L78 Accepts]: Start accepts. Automaton has 651 states and 1027 transitions. Word has length 124 [2019-10-13 19:21:28,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:21:28,651 INFO L462 AbstractCegarLoop]: Abstraction has 651 states and 1027 transitions. [2019-10-13 19:21:28,651 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:21:28,651 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states and 1027 transitions. [2019-10-13 19:21:28,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2019-10-13 19:21:28,654 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:21:28,654 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:21:28,861 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:21:28,861 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:21:28,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:21:28,862 INFO L82 PathProgramCache]: Analyzing trace with hash 1942679045, now seen corresponding path program 1 times [2019-10-13 19:21:28,862 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:21:28,862 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682388204] [2019-10-13 19:21:28,862 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:28,862 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:28,862 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:21:28,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:30,096 WARN L191 SmtUtils]: Spent 1.12 s on a formula simplification that was a NOOP. DAG size: 400 [2019-10-13 19:21:30,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:30,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:30,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:30,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:30,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:30,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:30,336 WARN L191 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-10-13 19:21:30,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:30,484 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-13 19:21:30,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:30,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:30,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:30,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:30,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:30,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:30,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:30,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:30,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:30,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:30,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:30,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:30,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:30,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:30,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:30,784 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-13 19:21:30,785 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682388204] [2019-10-13 19:21:30,785 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1975342217] [2019-10-13 19:21:30,785 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:21:31,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:31,545 INFO L256 TraceCheckSpWp]: Trace formula consists of 3185 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:21:31,550 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:21:31,591 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:21:31,591 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:21:31,592 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2019-10-13 19:21:31,592 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874128401] [2019-10-13 19:21:31,593 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:21:31,593 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:21:31,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:21:31,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2019-10-13 19:21:31,593 INFO L87 Difference]: Start difference. First operand 651 states and 1027 transitions. Second operand 4 states. [2019-10-13 19:21:31,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:21:31,756 INFO L93 Difference]: Finished difference Result 1264 states and 2016 transitions. [2019-10-13 19:21:31,757 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 19:21:31,757 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 125 [2019-10-13 19:21:31,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:21:31,763 INFO L225 Difference]: With dead ends: 1264 [2019-10-13 19:21:31,763 INFO L226 Difference]: Without dead ends: 651 [2019-10-13 19:21:31,769 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:21:31,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2019-10-13 19:21:31,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 651. [2019-10-13 19:21:31,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 651 states. [2019-10-13 19:21:31,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 651 states to 651 states and 1022 transitions. [2019-10-13 19:21:31,794 INFO L78 Accepts]: Start accepts. Automaton has 651 states and 1022 transitions. Word has length 125 [2019-10-13 19:21:31,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:21:31,794 INFO L462 AbstractCegarLoop]: Abstraction has 651 states and 1022 transitions. [2019-10-13 19:21:31,794 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:21:31,794 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states and 1022 transitions. [2019-10-13 19:21:31,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2019-10-13 19:21:31,796 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:21:31,796 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:21:32,004 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:21:32,005 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:21:32,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:21:32,005 INFO L82 PathProgramCache]: Analyzing trace with hash 2038518113, now seen corresponding path program 1 times [2019-10-13 19:21:32,005 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:21:32,006 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199634337] [2019-10-13 19:21:32,006 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:32,006 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:32,006 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:21:32,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:32,967 WARN L191 SmtUtils]: Spent 886.00 ms on a formula simplification that was a NOOP. DAG size: 400 [2019-10-13 19:21:32,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:32,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:32,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:32,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:32,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:33,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:33,235 WARN L191 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-10-13 19:21:33,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:33,397 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-13 19:21:33,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:33,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:33,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:33,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:33,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:33,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:33,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:33,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:33,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:33,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:33,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:33,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:33,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:33,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:33,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:33,611 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-13 19:21:33,611 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199634337] [2019-10-13 19:21:33,611 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1319847434] [2019-10-13 19:21:33,612 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:21:34,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:34,213 INFO L256 TraceCheckSpWp]: Trace formula consists of 3187 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:21:34,217 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:21:34,255 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:21:34,256 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:21:34,256 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2019-10-13 19:21:34,256 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433818285] [2019-10-13 19:21:34,257 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:21:34,257 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:21:34,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:21:34,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2019-10-13 19:21:34,258 INFO L87 Difference]: Start difference. First operand 651 states and 1022 transitions. Second operand 4 states. [2019-10-13 19:21:34,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:21:34,406 INFO L93 Difference]: Finished difference Result 1264 states and 2006 transitions. [2019-10-13 19:21:34,406 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 19:21:34,407 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 127 [2019-10-13 19:21:34,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:21:34,413 INFO L225 Difference]: With dead ends: 1264 [2019-10-13 19:21:34,413 INFO L226 Difference]: Without dead ends: 651 [2019-10-13 19:21:34,418 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:21:34,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2019-10-13 19:21:34,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 651. [2019-10-13 19:21:34,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 651 states. [2019-10-13 19:21:34,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 651 states to 651 states and 1017 transitions. [2019-10-13 19:21:34,451 INFO L78 Accepts]: Start accepts. Automaton has 651 states and 1017 transitions. Word has length 127 [2019-10-13 19:21:34,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:21:34,454 INFO L462 AbstractCegarLoop]: Abstraction has 651 states and 1017 transitions. [2019-10-13 19:21:34,454 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:21:34,454 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states and 1017 transitions. [2019-10-13 19:21:34,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2019-10-13 19:21:34,457 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:21:34,458 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:21:34,668 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:21:34,668 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:21:34,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:21:34,669 INFO L82 PathProgramCache]: Analyzing trace with hash 686521211, now seen corresponding path program 1 times [2019-10-13 19:21:34,669 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:21:34,670 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732210908] [2019-10-13 19:21:34,670 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:34,670 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:34,671 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:21:34,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:35,680 WARN L191 SmtUtils]: Spent 897.00 ms on a formula simplification that was a NOOP. DAG size: 400 [2019-10-13 19:21:35,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:35,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:35,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:35,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:35,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:35,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:35,919 WARN L191 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-10-13 19:21:35,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:36,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:36,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:36,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:36,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:36,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:36,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:36,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:36,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:36,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:36,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:36,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:36,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:36,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:36,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:36,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:36,439 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-13 19:21:36,440 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732210908] [2019-10-13 19:21:36,440 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [254055248] [2019-10-13 19:21:36,440 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:21:37,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:37,019 INFO L256 TraceCheckSpWp]: Trace formula consists of 3189 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:21:37,023 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:21:37,071 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:21:37,072 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:21:37,072 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [16] total 18 [2019-10-13 19:21:37,072 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528342939] [2019-10-13 19:21:37,073 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:21:37,073 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:21:37,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:21:37,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2019-10-13 19:21:37,073 INFO L87 Difference]: Start difference. First operand 651 states and 1017 transitions. Second operand 4 states. [2019-10-13 19:21:37,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:21:37,276 INFO L93 Difference]: Finished difference Result 1300 states and 2055 transitions. [2019-10-13 19:21:37,276 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:21:37,277 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 129 [2019-10-13 19:21:37,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:21:37,282 INFO L225 Difference]: With dead ends: 1300 [2019-10-13 19:21:37,282 INFO L226 Difference]: Without dead ends: 690 [2019-10-13 19:21:37,285 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2019-10-13 19:21:37,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2019-10-13 19:21:37,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 690. [2019-10-13 19:21:37,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 690 states. [2019-10-13 19:21:37,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 1081 transitions. [2019-10-13 19:21:37,309 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 1081 transitions. Word has length 129 [2019-10-13 19:21:37,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:21:37,309 INFO L462 AbstractCegarLoop]: Abstraction has 690 states and 1081 transitions. [2019-10-13 19:21:37,309 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:21:37,309 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 1081 transitions. [2019-10-13 19:21:37,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2019-10-13 19:21:37,311 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:21:37,312 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:21:37,524 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:21:37,525 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:21:37,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:21:37,526 INFO L82 PathProgramCache]: Analyzing trace with hash 933168351, now seen corresponding path program 1 times [2019-10-13 19:21:37,526 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:21:37,526 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635248189] [2019-10-13 19:21:37,527 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:37,527 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:37,527 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:21:37,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:38,441 WARN L191 SmtUtils]: Spent 803.00 ms on a formula simplification that was a NOOP. DAG size: 400 [2019-10-13 19:21:38,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:38,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:38,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:38,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:38,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:38,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:38,667 WARN L191 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-10-13 19:21:38,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:38,843 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-13 19:21:38,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:38,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:38,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:38,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:38,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:38,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:38,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:38,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:39,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:39,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:39,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:39,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:39,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:39,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:39,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:39,151 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-13 19:21:39,151 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635248189] [2019-10-13 19:21:39,151 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [156150490] [2019-10-13 19:21:39,151 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:21:39,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:39,794 INFO L256 TraceCheckSpWp]: Trace formula consists of 3190 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:21:39,798 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:21:39,856 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:21:39,856 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:21:39,856 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [16] total 18 [2019-10-13 19:21:39,856 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707154552] [2019-10-13 19:21:39,857 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:21:39,857 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:21:39,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:21:39,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2019-10-13 19:21:39,858 INFO L87 Difference]: Start difference. First operand 690 states and 1081 transitions. Second operand 4 states. [2019-10-13 19:21:40,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:21:40,058 INFO L93 Difference]: Finished difference Result 1303 states and 2058 transitions. [2019-10-13 19:21:40,058 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:21:40,058 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 130 [2019-10-13 19:21:40,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:21:40,064 INFO L225 Difference]: With dead ends: 1303 [2019-10-13 19:21:40,064 INFO L226 Difference]: Without dead ends: 690 [2019-10-13 19:21:40,067 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2019-10-13 19:21:40,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2019-10-13 19:21:40,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 690. [2019-10-13 19:21:40,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 690 states. [2019-10-13 19:21:40,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 1076 transitions. [2019-10-13 19:21:40,088 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 1076 transitions. Word has length 130 [2019-10-13 19:21:40,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:21:40,088 INFO L462 AbstractCegarLoop]: Abstraction has 690 states and 1076 transitions. [2019-10-13 19:21:40,089 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:21:40,089 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 1076 transitions. [2019-10-13 19:21:40,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2019-10-13 19:21:40,091 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:21:40,091 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:21:40,299 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:21:40,299 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:21:40,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:21:40,300 INFO L82 PathProgramCache]: Analyzing trace with hash -1678605474, now seen corresponding path program 1 times [2019-10-13 19:21:40,300 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:21:40,300 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909456169] [2019-10-13 19:21:40,300 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:40,301 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:40,301 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:21:40,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:41,280 WARN L191 SmtUtils]: Spent 877.00 ms on a formula simplification that was a NOOP. DAG size: 400 [2019-10-13 19:21:41,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:41,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:41,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:41,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:41,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:41,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:41,535 WARN L191 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-10-13 19:21:41,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:41,693 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-13 19:21:41,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:41,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:41,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:41,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:41,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:41,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:41,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:41,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:41,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:41,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:41,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat