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 --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/product-lines/elevator_spec14_product27.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 03:06:26,768 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 03:06:26,770 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 03:06:26,783 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 03:06:26,783 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 03:06:26,784 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 03:06:26,785 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 03:06:26,787 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 03:06:26,789 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 03:06:26,790 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 03:06:26,791 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 03:06:26,792 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 03:06:26,792 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 03:06:26,793 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 03:06:26,794 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 03:06:26,795 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 03:06:26,796 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 03:06:26,797 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 03:06:26,799 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 03:06:26,801 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 03:06:26,802 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 03:06:26,803 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 03:06:26,804 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 03:06:26,805 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 03:06:26,807 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 03:06:26,808 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 03:06:26,808 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 03:06:26,809 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 03:06:26,809 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 03:06:26,810 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 03:06:26,810 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 03:06:26,811 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 03:06:26,812 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 03:06:26,813 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 03:06:26,814 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 03:06:26,814 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 03:06:26,815 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 03:06:26,815 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 03:06:26,815 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 03:06:26,816 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 03:06:26,817 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 03:06:26,817 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 [2019-10-15 03:06:26,831 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 03:06:26,832 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 03:06:26,833 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 03:06:26,833 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 03:06:26,833 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 03:06:26,833 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 03:06:26,834 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 03:06:26,834 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 03:06:26,834 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 03:06:26,834 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 03:06:26,835 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 03:06:26,835 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 03:06:26,835 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 03:06:26,835 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 03:06:26,835 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 03:06:26,835 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 03:06:26,836 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 03:06:26,836 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 03:06:26,836 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 03:06:26,836 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 03:06:26,837 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 03:06:26,837 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:06:26,837 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 03:06:26,837 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 03:06:26,837 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 03:06:26,838 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 03:06:26,838 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 03:06:26,838 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 03:06:26,838 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-15 03:06:27,136 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 03:06:27,163 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 03:06:27,171 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 03:06:27,173 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 03:06:27,174 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 03:06:27,175 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec14_product27.cil.c [2019-10-15 03:06:27,264 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/888f9ea0a/bf262f3d6732485c9b3b88778031e889/FLAG39a717a2b [2019-10-15 03:06:27,897 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 03:06:27,898 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec14_product27.cil.c [2019-10-15 03:06:27,920 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/888f9ea0a/bf262f3d6732485c9b3b88778031e889/FLAG39a717a2b [2019-10-15 03:06:28,096 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/888f9ea0a/bf262f3d6732485c9b3b88778031e889 [2019-10-15 03:06:28,110 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 03:06:28,112 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 03:06:28,113 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 03:06:28,114 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 03:06:28,118 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 03:06:28,119 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:06:28" (1/1) ... [2019-10-15 03:06:28,123 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35a8eca5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:28, skipping insertion in model container [2019-10-15 03:06:28,124 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:06:28" (1/1) ... [2019-10-15 03:06:28,133 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 03:06:28,220 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 03:06:29,028 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:06:29,045 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 03:06:29,285 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:06:29,367 INFO L192 MainTranslator]: Completed translation [2019-10-15 03:06:29,367 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:29 WrapperNode [2019-10-15 03:06:29,368 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 03:06:29,369 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 03:06:29,370 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 03:06:29,370 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 03:06:29,391 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:29" (1/1) ... [2019-10-15 03:06:29,391 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:29" (1/1) ... [2019-10-15 03:06:29,460 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:29" (1/1) ... [2019-10-15 03:06:29,461 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:29" (1/1) ... [2019-10-15 03:06:29,557 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:29" (1/1) ... [2019-10-15 03:06:29,586 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:29" (1/1) ... [2019-10-15 03:06:29,601 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:29" (1/1) ... [2019-10-15 03:06:29,622 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 03:06:29,623 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 03:06:29,623 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 03:06:29,624 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 03:06:29,626 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:29" (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 [2019-10-15 03:06:29,740 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 03:06:29,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 03:06:29,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 03:06:29,742 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 03:06:29,742 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-15 03:06:29,742 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-15 03:06:29,743 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-15 03:06:29,743 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-15 03:06:29,743 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-15 03:06:29,744 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-15 03:06:29,744 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__weight [2019-10-15 03:06:29,744 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-15 03:06:29,744 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-15 03:06:29,745 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-15 03:06:29,745 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-15 03:06:29,745 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-15 03:06:29,746 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-15 03:06:29,746 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-15 03:06:29,746 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-15 03:06:29,747 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-15 03:06:29,747 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-15 03:06:29,747 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2019-10-15 03:06:29,747 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-15 03:06:29,748 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-15 03:06:29,748 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-15 03:06:29,748 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-15 03:06:29,748 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-15 03:06:29,749 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-15 03:06:29,749 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-15 03:06:29,749 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-15 03:06:29,749 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-15 03:06:29,750 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-15 03:06:29,750 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-10-15 03:06:29,750 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-10-15 03:06:29,751 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-15 03:06:29,751 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-15 03:06:29,751 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-15 03:06:29,752 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-15 03:06:29,752 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-15 03:06:29,752 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-15 03:06:29,752 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-15 03:06:29,753 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-15 03:06:29,753 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-15 03:06:29,753 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-15 03:06:29,754 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-15 03:06:29,754 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-15 03:06:29,754 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-15 03:06:29,754 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-15 03:06:29,755 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 03:06:29,755 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-15 03:06:29,755 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 03:06:29,755 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-15 03:06:29,756 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-15 03:06:29,756 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 03:06:29,756 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 03:06:29,756 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 03:06:29,757 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 03:06:29,757 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 03:06:29,757 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 03:06:29,758 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 03:06:29,758 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 03:06:29,758 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 03:06:29,758 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 03:06:29,759 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 03:06:29,759 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification14_spec__1 [2019-10-15 03:06:29,759 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-15 03:06:29,759 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-15 03:06:29,760 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-15 03:06:29,760 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-15 03:06:29,760 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-15 03:06:29,761 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-15 03:06:29,761 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-15 03:06:29,761 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-15 03:06:29,761 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-15 03:06:29,762 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-15 03:06:29,762 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-15 03:06:29,762 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 03:06:29,762 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 03:06:29,763 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 03:06:29,763 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 03:06:29,763 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-15 03:06:29,763 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-15 03:06:29,764 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-15 03:06:29,764 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-15 03:06:29,764 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-15 03:06:29,764 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-15 03:06:29,765 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-15 03:06:29,765 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-15 03:06:29,765 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-15 03:06:29,765 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-15 03:06:29,765 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-15 03:06:29,766 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-15 03:06:29,766 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-15 03:06:29,766 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-15 03:06:29,767 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-15 03:06:29,767 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-15 03:06:29,767 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-15 03:06:29,768 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-15 03:06:29,768 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-15 03:06:29,768 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-15 03:06:29,768 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-10-15 03:06:29,769 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-10-15 03:06:29,769 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-15 03:06:29,769 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-15 03:06:29,770 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__weight [2019-10-15 03:06:29,770 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-15 03:06:29,770 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-15 03:06:29,771 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-15 03:06:29,771 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-15 03:06:29,771 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-15 03:06:29,771 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2019-10-15 03:06:29,772 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-15 03:06:29,772 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-15 03:06:29,772 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-15 03:06:29,773 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-15 03:06:29,773 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-15 03:06:29,773 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-15 03:06:29,773 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification14_spec__1 [2019-10-15 03:06:29,773 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 03:06:29,774 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-15 03:06:29,774 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 03:06:29,774 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-15 03:06:29,774 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-15 03:06:29,775 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-15 03:06:29,775 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-15 03:06:29,775 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-15 03:06:29,775 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-15 03:06:29,775 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-15 03:06:29,776 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-15 03:06:29,776 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-15 03:06:29,776 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-15 03:06:29,776 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-15 03:06:29,777 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-15 03:06:29,777 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-15 03:06:29,777 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-15 03:06:29,778 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-15 03:06:29,778 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-15 03:06:29,778 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 03:06:29,778 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 03:06:29,778 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-15 03:06:29,779 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 03:06:29,779 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 03:06:29,779 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 03:06:29,779 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 03:06:29,779 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-15 03:06:29,780 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-15 03:06:29,780 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 03:06:29,780 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 03:06:29,780 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 03:06:29,781 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 03:06:29,781 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 03:06:29,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 03:06:29,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 03:06:29,782 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 03:06:29,782 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 03:06:29,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 03:06:29,783 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 03:06:29,783 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 03:06:29,783 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 03:06:29,783 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 03:06:29,784 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 03:06:29,784 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 03:06:29,784 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 03:06:29,785 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-15 03:06:29,785 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 03:06:29,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 03:06:29,785 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 03:06:37,093 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 03:06:37,093 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-15 03:06:37,095 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:06:37 BoogieIcfgContainer [2019-10-15 03:06:37,095 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 03:06:37,097 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 03:06:37,097 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 03:06:37,100 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 03:06:37,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:06:28" (1/3) ... [2019-10-15 03:06:37,102 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57bf7866 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:06:37, skipping insertion in model container [2019-10-15 03:06:37,102 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:29" (2/3) ... [2019-10-15 03:06:37,102 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57bf7866 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:06:37, skipping insertion in model container [2019-10-15 03:06:37,102 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:06:37" (3/3) ... [2019-10-15 03:06:37,104 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec14_product27.cil.c [2019-10-15 03:06:37,114 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 03:06:37,124 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 03:06:37,137 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 03:06:37,169 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 03:06:37,169 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 03:06:37,169 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 03:06:37,169 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 03:06:37,169 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 03:06:37,170 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 03:06:37,170 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 03:06:37,170 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 03:06:37,204 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states. [2019-10-15 03:06:37,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2019-10-15 03:06:37,225 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:06:37,226 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:06:37,229 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:06:37,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:06:37,235 INFO L82 PathProgramCache]: Analyzing trace with hash 172227344, now seen corresponding path program 1 times [2019-10-15 03:06:37,246 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:06:37,246 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966068298] [2019-10-15 03:06:37,246 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:37,247 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:37,247 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:06:37,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:38,170 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-15 03:06:38,171 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966068298] [2019-10-15 03:06:38,172 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:06:38,172 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 03:06:38,173 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064196995] [2019-10-15 03:06:38,181 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:06:38,182 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:06:38,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:06:38,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:06:38,198 INFO L87 Difference]: Start difference. First operand 547 states. Second operand 7 states. [2019-10-15 03:06:40,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:06:40,119 INFO L93 Difference]: Finished difference Result 969 states and 1426 transitions. [2019-10-15 03:06:40,120 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-15 03:06:40,122 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 110 [2019-10-15 03:06:40,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:06:40,153 INFO L225 Difference]: With dead ends: 969 [2019-10-15 03:06:40,153 INFO L226 Difference]: Without dead ends: 544 [2019-10-15 03:06:40,161 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2019-10-15 03:06:40,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2019-10-15 03:06:40,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 538. [2019-10-15 03:06:40,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 538 states. [2019-10-15 03:06:40,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 770 transitions. [2019-10-15 03:06:40,326 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 770 transitions. Word has length 110 [2019-10-15 03:06:40,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:06:40,327 INFO L462 AbstractCegarLoop]: Abstraction has 538 states and 770 transitions. [2019-10-15 03:06:40,327 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 03:06:40,328 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 770 transitions. [2019-10-15 03:06:40,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2019-10-15 03:06:40,340 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:06:40,341 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:06:40,341 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:06:40,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:06:40,341 INFO L82 PathProgramCache]: Analyzing trace with hash -115405177, now seen corresponding path program 1 times [2019-10-15 03:06:40,342 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:06:40,342 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843058411] [2019-10-15 03:06:40,342 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:40,342 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:40,343 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:06:40,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:40,658 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2019-10-15 03:06:40,659 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843058411] [2019-10-15 03:06:40,659 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:06:40,659 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 03:06:40,660 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106482416] [2019-10-15 03:06:40,673 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 03:06:40,673 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:06:40,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 03:06:40,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:06:40,674 INFO L87 Difference]: Start difference. First operand 538 states and 770 transitions. Second operand 5 states. [2019-10-15 03:06:40,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:06:40,759 INFO L93 Difference]: Finished difference Result 1051 states and 1519 transitions. [2019-10-15 03:06:40,760 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:06:40,760 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 211 [2019-10-15 03:06:40,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:06:40,765 INFO L225 Difference]: With dead ends: 1051 [2019-10-15 03:06:40,766 INFO L226 Difference]: Without dead ends: 544 [2019-10-15 03:06:40,769 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:06:40,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2019-10-15 03:06:40,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 544. [2019-10-15 03:06:40,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 544 states. [2019-10-15 03:06:40,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 776 transitions. [2019-10-15 03:06:40,821 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 776 transitions. Word has length 211 [2019-10-15 03:06:40,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:06:40,822 INFO L462 AbstractCegarLoop]: Abstraction has 544 states and 776 transitions. [2019-10-15 03:06:40,823 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 03:06:40,823 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 776 transitions. [2019-10-15 03:06:40,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2019-10-15 03:06:40,829 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:06:40,838 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:06:40,838 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:06:40,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:06:40,839 INFO L82 PathProgramCache]: Analyzing trace with hash -714317864, now seen corresponding path program 1 times [2019-10-15 03:06:40,839 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:06:40,841 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882934140] [2019-10-15 03:06:40,841 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:40,842 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:40,842 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:06:40,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:41,099 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2019-10-15 03:06:41,099 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882934140] [2019-10-15 03:06:41,100 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1070581667] [2019-10-15 03:06:41,100 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 [2019-10-15 03:06:41,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:41,841 INFO L256 TraceCheckSpWp]: Trace formula consists of 2913 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 03:06:41,871 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:06:41,977 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-15 03:06:41,977 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:06:42,250 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2019-10-15 03:06:42,251 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 03:06:42,251 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 4] total 10 [2019-10-15 03:06:42,251 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593843] [2019-10-15 03:06:42,253 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:06:42,254 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:06:42,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:06:42,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-10-15 03:06:42,255 INFO L87 Difference]: Start difference. First operand 544 states and 776 transitions. Second operand 4 states. [2019-10-15 03:06:42,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:06:42,546 INFO L93 Difference]: Finished difference Result 1096 states and 1603 transitions. [2019-10-15 03:06:42,547 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:06:42,547 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 155 [2019-10-15 03:06:42,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:06:42,563 INFO L225 Difference]: With dead ends: 1096 [2019-10-15 03:06:42,563 INFO L226 Difference]: Without dead ends: 583 [2019-10-15 03:06:42,572 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 309 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2019-10-15 03:06:42,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2019-10-15 03:06:42,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 583. [2019-10-15 03:06:42,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 583 states. [2019-10-15 03:06:42,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 849 transitions. [2019-10-15 03:06:42,701 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 849 transitions. Word has length 155 [2019-10-15 03:06:42,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:06:42,702 INFO L462 AbstractCegarLoop]: Abstraction has 583 states and 849 transitions. [2019-10-15 03:06:42,702 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 03:06:42,702 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 849 transitions. [2019-10-15 03:06:42,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2019-10-15 03:06:42,708 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:06:42,709 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:06:42,925 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:06:42,926 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:06:42,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:06:42,927 INFO L82 PathProgramCache]: Analyzing trace with hash -1523529642, now seen corresponding path program 1 times [2019-10-15 03:06:42,927 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:06:42,928 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463204396] [2019-10-15 03:06:42,928 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:42,928 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:42,928 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:06:43,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:43,117 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2019-10-15 03:06:43,118 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463204396] [2019-10-15 03:06:43,118 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [598583190] [2019-10-15 03:06:43,118 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 [2019-10-15 03:06:43,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:43,666 INFO L256 TraceCheckSpWp]: Trace formula consists of 2918 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 03:06:43,675 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:06:43,763 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-10-15 03:06:43,763 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:06:44,330 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2019-10-15 03:06:44,330 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 03:06:44,331 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 7 [2019-10-15 03:06:44,331 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578350073] [2019-10-15 03:06:44,332 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:06:44,332 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:06:44,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:06:44,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:06:44,333 INFO L87 Difference]: Start difference. First operand 583 states and 849 transitions. Second operand 4 states. [2019-10-15 03:06:44,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:06:44,712 INFO L93 Difference]: Finished difference Result 1174 states and 1748 transitions. [2019-10-15 03:06:44,713 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:06:44,713 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 160 [2019-10-15 03:06:44,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:06:44,719 INFO L225 Difference]: With dead ends: 1174 [2019-10-15 03:06:44,720 INFO L226 Difference]: Without dead ends: 622 [2019-10-15 03:06:44,723 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 317 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-10-15 03:06:44,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2019-10-15 03:06:44,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 622. [2019-10-15 03:06:44,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 622 states. [2019-10-15 03:06:44,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 622 states to 622 states and 922 transitions. [2019-10-15 03:06:44,758 INFO L78 Accepts]: Start accepts. Automaton has 622 states and 922 transitions. Word has length 160 [2019-10-15 03:06:44,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:06:44,760 INFO L462 AbstractCegarLoop]: Abstraction has 622 states and 922 transitions. [2019-10-15 03:06:44,760 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 03:06:44,760 INFO L276 IsEmpty]: Start isEmpty. Operand 622 states and 922 transitions. [2019-10-15 03:06:44,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2019-10-15 03:06:44,765 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:06:44,765 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:06:44,974 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:06:44,975 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:06:44,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:06:44,984 INFO L82 PathProgramCache]: Analyzing trace with hash 1791596038, now seen corresponding path program 1 times [2019-10-15 03:06:44,984 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:06:44,985 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124781677] [2019-10-15 03:06:44,985 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:44,985 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:44,985 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:06:45,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:45,156 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 15 proven. 12 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2019-10-15 03:06:45,157 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124781677] [2019-10-15 03:06:45,158 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1570459144] [2019-10-15 03:06:45,159 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 [2019-10-15 03:06:45,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:45,706 INFO L256 TraceCheckSpWp]: Trace formula consists of 2922 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 03:06:45,725 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:06:45,815 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-15 03:06:45,816 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:06:45,996 WARN L191 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 1 [2019-10-15 03:06:46,337 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 15 proven. 12 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2019-10-15 03:06:46,338 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 03:06:46,338 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 7 [2019-10-15 03:06:46,339 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246385274] [2019-10-15 03:06:46,339 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:06:46,340 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:06:46,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:06:46,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:06:46,340 INFO L87 Difference]: Start difference. First operand 622 states and 922 transitions. Second operand 4 states. [2019-10-15 03:06:46,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:06:46,573 INFO L93 Difference]: Finished difference Result 1252 states and 1893 transitions. [2019-10-15 03:06:46,574 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:06:46,574 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 164 [2019-10-15 03:06:46,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:06:46,580 INFO L225 Difference]: With dead ends: 1252 [2019-10-15 03:06:46,581 INFO L226 Difference]: Without dead ends: 661 [2019-10-15 03:06:46,587 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 325 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-10-15 03:06:46,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2019-10-15 03:06:46,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 661. [2019-10-15 03:06:46,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 661 states. [2019-10-15 03:06:46,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 661 states to 661 states and 995 transitions. [2019-10-15 03:06:46,622 INFO L78 Accepts]: Start accepts. Automaton has 661 states and 995 transitions. Word has length 164 [2019-10-15 03:06:46,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:06:46,624 INFO L462 AbstractCegarLoop]: Abstraction has 661 states and 995 transitions. [2019-10-15 03:06:46,624 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 03:06:46,624 INFO L276 IsEmpty]: Start isEmpty. Operand 661 states and 995 transitions. [2019-10-15 03:06:46,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2019-10-15 03:06:46,632 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:06:46,632 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:06:46,851 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:06:46,852 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:06:46,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:06:46,853 INFO L82 PathProgramCache]: Analyzing trace with hash 818477089, now seen corresponding path program 1 times [2019-10-15 03:06:46,853 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:06:46,853 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403058658] [2019-10-15 03:06:46,854 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:46,854 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:46,854 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:06:46,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:47,079 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 27 proven. 7 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2019-10-15 03:06:47,079 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403058658] [2019-10-15 03:06:47,080 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [456025382] [2019-10-15 03:06:47,080 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 [2019-10-15 03:06:47,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:47,792 INFO L256 TraceCheckSpWp]: Trace formula consists of 3307 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 03:06:47,802 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:06:47,983 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2019-10-15 03:06:47,983 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:06:48,499 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 27 proven. 7 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2019-10-15 03:06:48,499 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 03:06:48,499 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 7 [2019-10-15 03:06:48,500 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884996597] [2019-10-15 03:06:48,500 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:06:48,501 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:06:48,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:06:48,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:06:48,501 INFO L87 Difference]: Start difference. First operand 661 states and 995 transitions. Second operand 4 states. [2019-10-15 03:06:48,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:06:48,707 INFO L93 Difference]: Finished difference Result 1330 states and 2038 transitions. [2019-10-15 03:06:48,708 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:06:48,708 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 228 [2019-10-15 03:06:48,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:06:48,712 INFO L225 Difference]: With dead ends: 1330 [2019-10-15 03:06:48,712 INFO L226 Difference]: Without dead ends: 700 [2019-10-15 03:06:48,716 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 461 GetRequests, 453 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-10-15 03:06:48,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 700 states. [2019-10-15 03:06:48,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 700 to 700. [2019-10-15 03:06:48,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 700 states. [2019-10-15 03:06:48,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 700 states to 700 states and 1068 transitions. [2019-10-15 03:06:48,749 INFO L78 Accepts]: Start accepts. Automaton has 700 states and 1068 transitions. Word has length 228 [2019-10-15 03:06:48,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:06:48,750 INFO L462 AbstractCegarLoop]: Abstraction has 700 states and 1068 transitions. [2019-10-15 03:06:48,750 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 03:06:48,750 INFO L276 IsEmpty]: Start isEmpty. Operand 700 states and 1068 transitions. [2019-10-15 03:06:48,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2019-10-15 03:06:48,754 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:06:48,755 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:06:48,963 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:06:48,964 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:06:48,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:06:48,965 INFO L82 PathProgramCache]: Analyzing trace with hash -282558234, now seen corresponding path program 1 times [2019-10-15 03:06:48,965 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:06:48,965 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752806420] [2019-10-15 03:06:48,965 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:48,966 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:48,966 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:06:49,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:49,254 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2019-10-15 03:06:49,254 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752806420] [2019-10-15 03:06:49,255 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1072097197] [2019-10-15 03:06:49,255 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 [2019-10-15 03:06:50,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:50,018 INFO L256 TraceCheckSpWp]: Trace formula consists of 2921 conjuncts, 31 conjunts are in the unsatisfiable core [2019-10-15 03:06:50,025 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:06:50,170 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 20 proven. 8 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2019-10-15 03:06:50,170 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:06:50,394 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:06:50,404 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:06:50,409 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:06:50,414 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:06:50,521 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2019-10-15 03:06:50,522 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [475792720] [2019-10-15 03:06:50,556 INFO L162 IcfgInterpreter]: Started Sifa with 131 locations of interest [2019-10-15 03:06:50,556 INFO L169 IcfgInterpreter]: Building call graph [2019-10-15 03:06:50,563 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-15 03:06:50,572 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-15 03:06:50,572 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs