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_product20.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 03:06:23,764 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 03:06:23,766 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 03:06:23,785 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 03:06:23,785 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 03:06:23,787 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 03:06:23,789 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 03:06:23,801 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 03:06:23,803 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 03:06:23,804 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 03:06:23,805 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 03:06:23,806 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 03:06:23,806 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 03:06:23,807 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 03:06:23,808 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 03:06:23,809 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 03:06:23,811 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 03:06:23,812 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 03:06:23,813 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 03:06:23,815 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 03:06:23,816 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 03:06:23,817 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 03:06:23,818 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 03:06:23,818 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 03:06:23,820 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 03:06:23,821 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 03:06:23,821 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 03:06:23,822 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 03:06:23,822 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 03:06:23,823 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 03:06:23,823 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 03:06:23,824 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 03:06:23,825 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 03:06:23,825 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 03:06:23,826 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 03:06:23,826 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 03:06:23,827 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 03:06:23,827 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 03:06:23,828 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 03:06:23,828 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 03:06:23,829 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 03:06:23,830 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 03:06:23,844 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 03:06:23,844 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 03:06:23,845 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 03:06:23,845 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 03:06:23,846 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 03:06:23,846 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 03:06:23,846 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 03:06:23,846 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 03:06:23,846 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 03:06:23,847 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 03:06:23,847 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 03:06:23,847 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 03:06:23,847 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 03:06:23,847 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 03:06:23,848 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 03:06:23,848 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 03:06:23,848 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 03:06:23,848 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 03:06:23,848 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 03:06:23,849 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 03:06:23,849 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 03:06:23,849 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:06:23,849 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 03:06:23,849 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 03:06:23,850 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 03:06:23,850 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 03:06:23,850 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 03:06:23,850 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 03:06:23,850 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 03:06:24,133 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 03:06:24,147 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 03:06:24,151 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 03:06:24,152 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 03:06:24,153 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 03:06:24,154 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec14_product20.cil.c [2019-10-15 03:06:24,228 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8337390c/fc29736ee7404912a4119593866e9b2d/FLAG172de33d3 [2019-10-15 03:06:24,989 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 03:06:24,989 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec14_product20.cil.c [2019-10-15 03:06:25,013 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8337390c/fc29736ee7404912a4119593866e9b2d/FLAG172de33d3 [2019-10-15 03:06:25,128 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8337390c/fc29736ee7404912a4119593866e9b2d [2019-10-15 03:06:25,143 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 03:06:25,145 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 03:06:25,146 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 03:06:25,146 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 03:06:25,150 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 03:06:25,151 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:06:25" (1/1) ... [2019-10-15 03:06:25,155 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3632a333 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:25, skipping insertion in model container [2019-10-15 03:06:25,155 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:06:25" (1/1) ... [2019-10-15 03:06:25,163 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 03:06:25,248 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 03:06:26,253 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:06:26,288 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 03:06:26,467 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:06:26,542 INFO L192 MainTranslator]: Completed translation [2019-10-15 03:06:26,542 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:26 WrapperNode [2019-10-15 03:06:26,543 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 03:06:26,545 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 03:06:26,545 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 03:06:26,545 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 03:06:26,562 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:26" (1/1) ... [2019-10-15 03:06:26,562 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:26" (1/1) ... [2019-10-15 03:06:26,610 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:26" (1/1) ... [2019-10-15 03:06:26,620 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:26" (1/1) ... [2019-10-15 03:06:26,703 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:26" (1/1) ... [2019-10-15 03:06:26,751 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:26" (1/1) ... [2019-10-15 03:06:26,765 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:26" (1/1) ... [2019-10-15 03:06:26,789 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 03:06:26,790 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 03:06:26,790 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 03:06:26,790 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 03:06:26,792 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:26" (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 03:06:26,881 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 03:06:26,881 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 03:06:26,881 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 03:06:26,882 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 03:06:26,882 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 03:06:26,882 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 03:06:26,883 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 03:06:26,883 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 03:06:26,883 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 03:06:26,883 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-15 03:06:26,884 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-15 03:06:26,884 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification14_spec__1 [2019-10-15 03:06:26,884 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-15 03:06:26,884 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-15 03:06:26,885 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-15 03:06:26,885 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-15 03:06:26,885 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-15 03:06:26,886 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-15 03:06:26,886 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-15 03:06:26,886 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-15 03:06:26,887 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-15 03:06:26,887 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-15 03:06:26,887 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-15 03:06:26,887 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-15 03:06:26,888 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-15 03:06:26,888 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-15 03:06:26,888 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 03:06:26,888 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-15 03:06:26,889 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 03:06:26,889 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 03:06:26,889 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 03:06:26,889 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 03:06:26,890 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 03:06:26,890 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 03:06:26,890 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-15 03:06:26,890 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-15 03:06:26,891 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-15 03:06:26,891 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-15 03:06:26,891 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-15 03:06:26,892 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-15 03:06:26,892 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-15 03:06:26,892 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-15 03:06:26,892 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-15 03:06:26,892 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-15 03:06:26,893 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-15 03:06:26,893 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-15 03:06:26,893 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-15 03:06:26,893 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-15 03:06:26,893 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-15 03:06:26,894 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-15 03:06:26,894 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-15 03:06:26,894 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-15 03:06:26,895 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-15 03:06:26,895 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-15 03:06:26,895 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-15 03:06:26,895 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-15 03:06:26,896 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-15 03:06:26,896 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-15 03:06:26,896 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2019-10-15 03:06:26,896 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-15 03:06:26,896 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-15 03:06:26,897 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-15 03:06:26,897 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-10-15 03:06:26,897 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-15 03:06:26,897 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-15 03:06:26,898 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-15 03:06:26,898 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2019-10-15 03:06:26,898 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-15 03:06:26,898 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__wrappee__executivefloor [2019-10-15 03:06:26,898 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-15 03:06:26,899 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-15 03:06:26,899 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-10-15 03:06:26,899 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-10-15 03:06:26,899 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-15 03:06:26,899 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-15 03:06:26,900 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-15 03:06:26,900 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 03:06:26,900 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 03:06:26,900 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 03:06:26,901 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 03:06:26,901 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 03:06:26,902 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 03:06:26,903 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 03:06:26,903 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 03:06:26,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 03:06:26,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 03:06:26,904 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 03:06:26,905 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 03:06:26,905 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 03:06:26,905 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 03:06:26,905 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 03:06:26,905 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 03:06:26,906 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 03:06:26,906 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 03:06:26,906 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 03:06:26,906 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 03:06:26,906 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-15 03:06:26,906 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-15 03:06:26,907 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-15 03:06:26,907 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-15 03:06:26,907 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-15 03:06:26,907 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-15 03:06:26,907 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-15 03:06:26,907 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-15 03:06:26,908 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-15 03:06:26,908 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 03:06:26,908 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-15 03:06:26,908 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-15 03:06:26,908 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-10-15 03:06:26,909 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-10-15 03:06:26,909 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification14_spec__1 [2019-10-15 03:06:26,909 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 03:06:26,909 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-15 03:06:26,910 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-15 03:06:26,910 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-15 03:06:26,910 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-15 03:06:26,910 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-15 03:06:26,911 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-15 03:06:26,911 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-15 03:06:26,911 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-15 03:06:26,912 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-15 03:06:26,912 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-15 03:06:26,912 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-15 03:06:26,912 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-15 03:06:26,913 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-15 03:06:26,914 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-15 03:06:26,914 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-15 03:06:26,914 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 03:06:26,914 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 03:06:26,915 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-15 03:06:26,915 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 03:06:26,916 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 03:06:26,916 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 03:06:26,917 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 03:06:26,920 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 03:06:26,921 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-15 03:06:26,921 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-15 03:06:26,921 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-15 03:06:26,921 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-15 03:06:26,921 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-15 03:06:26,922 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-15 03:06:26,922 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-15 03:06:26,922 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 03:06:26,923 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-15 03:06:26,930 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-15 03:06:26,931 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-15 03:06:26,931 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-15 03:06:26,931 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-15 03:06:26,931 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-15 03:06:26,932 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-15 03:06:26,932 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-15 03:06:26,932 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-15 03:06:26,933 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-15 03:06:26,933 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-15 03:06:26,933 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-15 03:06:26,934 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-15 03:06:26,934 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2019-10-15 03:06:26,934 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-15 03:06:26,934 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-15 03:06:26,934 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-10-15 03:06:26,934 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-15 03:06:26,934 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-15 03:06:26,935 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-15 03:06:26,935 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2019-10-15 03:06:26,935 INFO L130 BoogieDeclarations]: Found specification of procedure printState__wrappee__executivefloor [2019-10-15 03:06:26,935 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-15 03:06:26,935 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 03:06:26,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 03:06:26,935 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 03:06:33,504 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 03:06:33,505 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-15 03:06:33,507 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:06:33 BoogieIcfgContainer [2019-10-15 03:06:33,507 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 03:06:33,508 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 03:06:33,508 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 03:06:33,511 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 03:06:33,511 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:06:25" (1/3) ... [2019-10-15 03:06:33,512 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d4b951c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:06:33, skipping insertion in model container [2019-10-15 03:06:33,512 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:26" (2/3) ... [2019-10-15 03:06:33,512 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d4b951c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:06:33, skipping insertion in model container [2019-10-15 03:06:33,513 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:06:33" (3/3) ... [2019-10-15 03:06:33,514 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec14_product20.cil.c [2019-10-15 03:06:33,526 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 03:06:33,538 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 03:06:33,550 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 03:06:33,583 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 03:06:33,583 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 03:06:33,583 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 03:06:33,584 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 03:06:33,584 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 03:06:33,584 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 03:06:33,584 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 03:06:33,584 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 03:06:33,618 INFO L276 IsEmpty]: Start isEmpty. Operand 555 states. [2019-10-15 03:06:33,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2019-10-15 03:06:33,630 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:06:33,631 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-15 03:06:33,634 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:06:33,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:06:33,640 INFO L82 PathProgramCache]: Analyzing trace with hash 1065410639, now seen corresponding path program 1 times [2019-10-15 03:06:33,651 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:06:33,651 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9695081] [2019-10-15 03:06:33,652 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:33,652 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:33,652 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:06:34,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:34,472 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-15 03:06:34,473 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9695081] [2019-10-15 03:06:34,474 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:06:34,475 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 03:06:34,476 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423171161] [2019-10-15 03:06:34,484 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:06:34,484 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:06:34,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:06:34,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:06:34,509 INFO L87 Difference]: Start difference. First operand 555 states. Second operand 3 states. [2019-10-15 03:06:34,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:06:34,957 INFO L93 Difference]: Finished difference Result 1247 states and 1886 transitions. [2019-10-15 03:06:34,957 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:06:34,959 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 72 [2019-10-15 03:06:34,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:06:35,003 INFO L225 Difference]: With dead ends: 1247 [2019-10-15 03:06:35,003 INFO L226 Difference]: Without dead ends: 820 [2019-10-15 03:06:35,019 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:06:35,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 820 states. [2019-10-15 03:06:35,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 820 to 777. [2019-10-15 03:06:35,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 777 states. [2019-10-15 03:06:35,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 777 states to 777 states and 1170 transitions. [2019-10-15 03:06:35,235 INFO L78 Accepts]: Start accepts. Automaton has 777 states and 1170 transitions. Word has length 72 [2019-10-15 03:06:35,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:06:35,236 INFO L462 AbstractCegarLoop]: Abstraction has 777 states and 1170 transitions. [2019-10-15 03:06:35,236 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:06:35,236 INFO L276 IsEmpty]: Start isEmpty. Operand 777 states and 1170 transitions. [2019-10-15 03:06:35,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-10-15 03:06:35,251 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:06:35,252 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-10-15 03:06:35,253 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:06:35,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:06:35,253 INFO L82 PathProgramCache]: Analyzing trace with hash 1023678644, now seen corresponding path program 1 times [2019-10-15 03:06:35,253 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:06:35,254 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995982789] [2019-10-15 03:06:35,254 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:35,254 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:35,255 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:06:35,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:35,558 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-10-15 03:06:35,559 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995982789] [2019-10-15 03:06:35,559 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:06:35,559 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 03:06:35,559 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116229114] [2019-10-15 03:06:35,561 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:06:35,562 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:06:35,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:06:35,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:06:35,563 INFO L87 Difference]: Start difference. First operand 777 states and 1170 transitions. Second operand 7 states. [2019-10-15 03:06:41,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:06:41,597 INFO L93 Difference]: Finished difference Result 2343 states and 3590 transitions. [2019-10-15 03:06:41,597 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-15 03:06:41,597 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 120 [2019-10-15 03:06:41,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:06:41,616 INFO L225 Difference]: With dead ends: 2343 [2019-10-15 03:06:41,616 INFO L226 Difference]: Without dead ends: 1597 [2019-10-15 03:06:41,625 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-15 03:06:41,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1597 states. [2019-10-15 03:06:41,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1597 to 1535. [2019-10-15 03:06:41,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1535 states. [2019-10-15 03:06:41,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1535 states to 1535 states and 2343 transitions. [2019-10-15 03:06:41,801 INFO L78 Accepts]: Start accepts. Automaton has 1535 states and 2343 transitions. Word has length 120 [2019-10-15 03:06:41,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:06:41,809 INFO L462 AbstractCegarLoop]: Abstraction has 1535 states and 2343 transitions. [2019-10-15 03:06:41,809 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 03:06:41,810 INFO L276 IsEmpty]: Start isEmpty. Operand 1535 states and 2343 transitions. [2019-10-15 03:06:41,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2019-10-15 03:06:41,836 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:06:41,837 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-10-15 03:06:41,838 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:06:41,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:06:41,838 INFO L82 PathProgramCache]: Analyzing trace with hash -1561507645, now seen corresponding path program 1 times [2019-10-15 03:06:41,839 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:06:41,839 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825813700] [2019-10-15 03:06:41,839 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:41,840 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:41,840 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:06:41,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:42,161 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2019-10-15 03:06:42,161 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825813700] [2019-10-15 03:06:42,161 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:06:42,161 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-15 03:06:42,162 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149185346] [2019-10-15 03:06:42,164 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-15 03:06:42,164 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:06:42,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-15 03:06:42,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2019-10-15 03:06:42,165 INFO L87 Difference]: Start difference. First operand 1535 states and 2343 transitions. Second operand 9 states. [2019-10-15 03:06:47,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:06:47,567 INFO L93 Difference]: Finished difference Result 1990 states and 2995 transitions. [2019-10-15 03:06:47,567 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-15 03:06:47,567 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 124 [2019-10-15 03:06:47,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:06:47,591 INFO L225 Difference]: With dead ends: 1990 [2019-10-15 03:06:47,592 INFO L226 Difference]: Without dead ends: 1987 [2019-10-15 03:06:47,596 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2019-10-15 03:06:47,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1987 states. [2019-10-15 03:06:47,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1987 to 1898. [2019-10-15 03:06:47,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1898 states. [2019-10-15 03:06:47,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1898 states to 1898 states and 2847 transitions. [2019-10-15 03:06:47,754 INFO L78 Accepts]: Start accepts. Automaton has 1898 states and 2847 transitions. Word has length 124 [2019-10-15 03:06:47,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:06:47,758 INFO L462 AbstractCegarLoop]: Abstraction has 1898 states and 2847 transitions. [2019-10-15 03:06:47,758 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-15 03:06:47,758 INFO L276 IsEmpty]: Start isEmpty. Operand 1898 states and 2847 transitions. [2019-10-15 03:06:47,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2019-10-15 03:06:47,769 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:06:47,769 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 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] [2019-10-15 03:06:47,769 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:06:47,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:06:47,770 INFO L82 PathProgramCache]: Analyzing trace with hash -1670895339, now seen corresponding path program 1 times [2019-10-15 03:06:47,771 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:06:47,771 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400344820] [2019-10-15 03:06:47,772 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:47,772 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:47,772 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:06:47,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:48,145 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2019-10-15 03:06:48,146 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400344820] [2019-10-15 03:06:48,146 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [922452573] [2019-10-15 03:06:48,146 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 03:06:48,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:48,807 INFO L256 TraceCheckSpWp]: Trace formula consists of 3160 conjuncts, 16 conjunts are in the unsatisfiable core [2019-10-15 03:06:48,852 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:06:49,172 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2019-10-15 03:06:49,173 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:06:49,726 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2019-10-15 03:06:49,727 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 03:06:49,727 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10, 6] total 15 [2019-10-15 03:06:49,728 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570477016] [2019-10-15 03:06:49,728 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 03:06:49,728 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:06:49,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 03:06:49,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2019-10-15 03:06:49,729 INFO L87 Difference]: Start difference. First operand 1898 states and 2847 transitions. Second operand 6 states. [2019-10-15 03:06:50,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:06:50,609 INFO L93 Difference]: Finished difference Result 3762 states and 5687 transitions. [2019-10-15 03:06:50,610 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 03:06:50,610 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 159 [2019-10-15 03:06:50,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:06:50,633 INFO L225 Difference]: With dead ends: 3762 [2019-10-15 03:06:50,633 INFO L226 Difference]: Without dead ends: 1894 [2019-10-15 03:06:50,646 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 310 SyntacticMatches, 9 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2019-10-15 03:06:50,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1894 states. [2019-10-15 03:06:50,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1894 to 1894. [2019-10-15 03:06:50,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1894 states. [2019-10-15 03:06:50,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1894 states to 1894 states and 2827 transitions. [2019-10-15 03:06:50,772 INFO L78 Accepts]: Start accepts. Automaton has 1894 states and 2827 transitions. Word has length 159 [2019-10-15 03:06:50,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:06:50,772 INFO L462 AbstractCegarLoop]: Abstraction has 1894 states and 2827 transitions. [2019-10-15 03:06:50,773 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 03:06:50,773 INFO L276 IsEmpty]: Start isEmpty. Operand 1894 states and 2827 transitions. [2019-10-15 03:06:50,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2019-10-15 03:06:50,778 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:06:50,778 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 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] [2019-10-15 03:06:50,979 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:06:50,980 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:06:50,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:06:50,980 INFO L82 PathProgramCache]: Analyzing trace with hash 1363237341, now seen corresponding path program 1 times [2019-10-15 03:06:50,981 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:06:50,982 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599078162] [2019-10-15 03:06:50,982 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:50,983 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:50,983 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:06:51,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:51,278 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2019-10-15 03:06:51,279 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599078162] [2019-10-15 03:06:51,279 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:06:51,281 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 03:06:51,281 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575074158] [2019-10-15 03:06:51,282 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 03:06:51,282 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:06:51,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 03:06:51,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:06:51,283 INFO L87 Difference]: Start difference. First operand 1894 states and 2827 transitions. Second operand 5 states. [2019-10-15 03:06:51,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:06:51,426 INFO L93 Difference]: Finished difference Result 3781 states and 5691 transitions. [2019-10-15 03:06:51,427 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:06:51,427 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 160 [2019-10-15 03:06:51,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:06:51,445 INFO L225 Difference]: With dead ends: 3781 [2019-10-15 03:06:51,446 INFO L226 Difference]: Without dead ends: 1918 [2019-10-15 03:06:51,457 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 03:06:51,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1918 states. [2019-10-15 03:06:51,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1918 to 1918. [2019-10-15 03:06:51,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1918 states. [2019-10-15 03:06:51,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1918 states to 1918 states and 2851 transitions. [2019-10-15 03:06:51,592 INFO L78 Accepts]: Start accepts. Automaton has 1918 states and 2851 transitions. Word has length 160 [2019-10-15 03:06:51,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:06:51,593 INFO L462 AbstractCegarLoop]: Abstraction has 1918 states and 2851 transitions. [2019-10-15 03:06:51,593 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 03:06:51,593 INFO L276 IsEmpty]: Start isEmpty. Operand 1918 states and 2851 transitions. [2019-10-15 03:06:51,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2019-10-15 03:06:51,601 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:06:51,602 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 3, 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] [2019-10-15 03:06:51,602 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:06:51,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:06:51,602 INFO L82 PathProgramCache]: Analyzing trace with hash 1035764282, now seen corresponding path program 1 times [2019-10-15 03:06:51,603 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:06:51,603 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712021521] [2019-10-15 03:06:51,603 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:51,603 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:51,603 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:06:51,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:51,877 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2019-10-15 03:06:51,878 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712021521] [2019-10-15 03:06:51,878 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1471702000] [2019-10-15 03:06:51,878 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 03:06:52,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:52,462 INFO L256 TraceCheckSpWp]: Trace formula consists of 3174 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 03:06:52,471 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:06:52,556 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-15 03:06:52,556 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:06:52,877 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2019-10-15 03:06:52,878 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 03:06:52,878 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 4] total 10 [2019-10-15 03:06:52,878 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539207361] [2019-10-15 03:06:52,879 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:06:52,879 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:06:52,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:06:52,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-10-15 03:06:52,880 INFO L87 Difference]: Start difference. First operand 1918 states and 2851 transitions. Second operand 4 states. [2019-10-15 03:06:53,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:06:53,503 INFO L93 Difference]: Finished difference Result 3961 states and 6030 transitions. [2019-10-15 03:06:53,503 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:06:53,503 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 165 [2019-10-15 03:06:53,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:06:53,525 INFO L225 Difference]: With dead ends: 3961 [2019-10-15 03:06:53,525 INFO L226 Difference]: Without dead ends: 2074 [2019-10-15 03:06:53,537 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 329 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 03:06:53,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2074 states. [2019-10-15 03:06:53,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2074 to 2074. [2019-10-15 03:06:53,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2074 states. [2019-10-15 03:06:53,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2074 states to 2074 states and 3143 transitions. [2019-10-15 03:06:53,652 INFO L78 Accepts]: Start accepts. Automaton has 2074 states and 3143 transitions. Word has length 165 [2019-10-15 03:06:53,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:06:53,653 INFO L462 AbstractCegarLoop]: Abstraction has 2074 states and 3143 transitions. [2019-10-15 03:06:53,653 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 03:06:53,653 INFO L276 IsEmpty]: Start isEmpty. Operand 2074 states and 3143 transitions. [2019-10-15 03:06:53,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2019-10-15 03:06:53,659 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:06:53,659 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 3, 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] [2019-10-15 03:06:53,867 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:06:53,868 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:06:53,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:06:53,869 INFO L82 PathProgramCache]: Analyzing trace with hash 493138988, now seen corresponding path program 1 times [2019-10-15 03:06:53,869 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:06:53,869 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752120008] [2019-10-15 03:06:53,870 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:53,870 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:53,870 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:06:53,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:54,105 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2019-10-15 03:06:54,105 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752120008] [2019-10-15 03:06:54,105 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1084048645] [2019-10-15 03:06:54,106 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 03:06:54,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:54,762 INFO L256 TraceCheckSpWp]: Trace formula consists of 3179 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 03:06:54,770 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:06:54,801 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-10-15 03:06:54,801 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:06:55,052 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2019-10-15 03:06:55,052 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 03:06:55,053 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 7 [2019-10-15 03:06:55,053 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281596086] [2019-10-15 03:06:55,053 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:06:55,054 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:06:55,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:06:55,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:06:55,054 INFO L87 Difference]: Start difference. First operand 2074 states and 3143 transitions. Second operand 4 states. [2019-10-15 03:06:55,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:06:55,524 INFO L93 Difference]: Finished difference Result 4273 states and 6610 transitions. [2019-10-15 03:06:55,525 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:06:55,525 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 170 [2019-10-15 03:06:55,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:06:55,542 INFO L225 Difference]: With dead ends: 4273 [2019-10-15 03:06:55,543 INFO L226 Difference]: Without dead ends: 2230 [2019-10-15 03:06:55,554 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 337 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 03:06:55,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2230 states. [2019-10-15 03:06:55,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2230 to 2230. [2019-10-15 03:06:55,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2230 states. [2019-10-15 03:06:55,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2230 states to 2230 states and 3435 transitions. [2019-10-15 03:06:55,660 INFO L78 Accepts]: Start accepts. Automaton has 2230 states and 3435 transitions. Word has length 170 [2019-10-15 03:06:55,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:06:55,660 INFO L462 AbstractCegarLoop]: Abstraction has 2230 states and 3435 transitions. [2019-10-15 03:06:55,660 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 03:06:55,660 INFO L276 IsEmpty]: Start isEmpty. Operand 2230 states and 3435 transitions. [2019-10-15 03:06:55,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2019-10-15 03:06:55,667 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:06:55,667 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 3, 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] [2019-10-15 03:06:55,876 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:06:55,876 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:06:55,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:06:55,877 INFO L82 PathProgramCache]: Analyzing trace with hash -1603404964, now seen corresponding path program 1 times [2019-10-15 03:06:55,878 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:06:55,878 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245794540] [2019-10-15 03:06:55,878 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:55,878 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:55,878 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:06:55,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:56,099 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 15 proven. 12 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2019-10-15 03:06:56,100 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245794540] [2019-10-15 03:06:56,100 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [740076473] [2019-10-15 03:06:56,101 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 03:06:56,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:56,816 INFO L256 TraceCheckSpWp]: Trace formula consists of 3183 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 03:06:56,823 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:06:56,868 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-15 03:06:56,869 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:06:57,246 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 15 proven. 12 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2019-10-15 03:06:57,246 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 03:06:57,247 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 7 [2019-10-15 03:06:57,247 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231726852] [2019-10-15 03:06:57,247 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:06:57,248 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:06:57,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:06:57,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:06:57,248 INFO L87 Difference]: Start difference. First operand 2230 states and 3435 transitions. Second operand 4 states. [2019-10-15 03:06:57,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:06:57,615 INFO L93 Difference]: Finished difference Result 4585 states and 7190 transitions. [2019-10-15 03:06:57,615 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:06:57,615 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 174 [2019-10-15 03:06:57,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:06:57,635 INFO L225 Difference]: With dead ends: 4585 [2019-10-15 03:06:57,635 INFO L226 Difference]: Without dead ends: 2386 [2019-10-15 03:06:57,647 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 345 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 03:06:57,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2386 states. [2019-10-15 03:06:57,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2386 to 2386. [2019-10-15 03:06:57,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2386 states. [2019-10-15 03:06:57,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2386 states to 2386 states and 3727 transitions. [2019-10-15 03:06:57,880 INFO L78 Accepts]: Start accepts. Automaton has 2386 states and 3727 transitions. Word has length 174 [2019-10-15 03:06:57,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:06:57,881 INFO L462 AbstractCegarLoop]: Abstraction has 2386 states and 3727 transitions. [2019-10-15 03:06:57,881 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 03:06:57,882 INFO L276 IsEmpty]: Start isEmpty. Operand 2386 states and 3727 transitions. [2019-10-15 03:06:57,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2019-10-15 03:06:57,890 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:06:57,891 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 4, 3, 3, 3, 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] [2019-10-15 03:06:58,100 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:06:58,101 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:06:58,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:06:58,102 INFO L82 PathProgramCache]: Analyzing trace with hash -1177090278, now seen corresponding path program 1 times [2019-10-15 03:06:58,102 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:06:58,102 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744610399] [2019-10-15 03:06:58,102 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:58,103 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:58,103 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:06:58,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:58,352 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2019-10-15 03:06:58,353 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744610399] [2019-10-15 03:06:58,353 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1789433636] [2019-10-15 03:06:58,353 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 03:06:59,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:59,145 INFO L256 TraceCheckSpWp]: Trace formula consists of 3186 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 03:06:59,153 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:06:59,204 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-10-15 03:06:59,204 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:06:59,602 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2019-10-15 03:06:59,603 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 03:06:59,603 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 7 [2019-10-15 03:06:59,603 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921283460] [2019-10-15 03:06:59,604 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:06:59,604 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:06:59,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:06:59,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:06:59,605 INFO L87 Difference]: Start difference. First operand 2386 states and 3727 transitions. Second operand 4 states. [2019-10-15 03:07:00,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:07:00,006 INFO L93 Difference]: Finished difference Result 4897 states and 7770 transitions. [2019-10-15 03:07:00,006 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:07:00,007 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 177 [2019-10-15 03:07:00,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:07:00,029 INFO L225 Difference]: With dead ends: 4897 [2019-10-15 03:07:00,029 INFO L226 Difference]: Without dead ends: 2542 [2019-10-15 03:07:00,046 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 351 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 03:07:00,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2542 states. [2019-10-15 03:07:00,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2542 to 2542. [2019-10-15 03:07:00,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2542 states. [2019-10-15 03:07:00,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2542 states to 2542 states and 4019 transitions. [2019-10-15 03:07:00,181 INFO L78 Accepts]: Start accepts. Automaton has 2542 states and 4019 transitions. Word has length 177 [2019-10-15 03:07:00,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:07:00,182 INFO L462 AbstractCegarLoop]: Abstraction has 2542 states and 4019 transitions. [2019-10-15 03:07:00,182 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 03:07:00,182 INFO L276 IsEmpty]: Start isEmpty. Operand 2542 states and 4019 transitions. [2019-10-15 03:07:00,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2019-10-15 03:07:00,190 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:07:00,190 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 4, 3, 3, 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] [2019-10-15 03:07:00,401 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:07:00,402 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:07:00,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:07:00,402 INFO L82 PathProgramCache]: Analyzing trace with hash 131479274, now seen corresponding path program 1 times [2019-10-15 03:07:00,402 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:07:00,403 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383387174] [2019-10-15 03:07:00,403 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:07:00,403 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:07:00,403 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:07:00,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:07:00,778 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2019-10-15 03:07:00,778 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383387174] [2019-10-15 03:07:00,778 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:07:00,779 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 03:07:00,779 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5869998] [2019-10-15 03:07:00,780 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:07:00,781 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:07:00,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:07:00,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 03:07:00,781 INFO L87 Difference]: Start difference. First operand 2542 states and 4019 transitions. Second operand 4 states. [2019-10-15 03:07:01,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:07:01,191 INFO L93 Difference]: Finished difference Result 5221 states and 8346 transitions. [2019-10-15 03:07:01,191 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:07:01,192 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 179 [2019-10-15 03:07:01,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:07:01,210 INFO L225 Difference]: With dead ends: 5221 [2019-10-15 03:07:01,211 INFO L226 Difference]: Without dead ends: 2678 [2019-10-15 03:07:01,226 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:07:01,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2678 states. [2019-10-15 03:07:01,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2678 to 2678. [2019-10-15 03:07:01,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2678 states. [2019-10-15 03:07:01,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2678 states to 2678 states and 4091 transitions. [2019-10-15 03:07:01,382 INFO L78 Accepts]: Start accepts. Automaton has 2678 states and 4091 transitions. Word has length 179 [2019-10-15 03:07:01,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:07:01,382 INFO L462 AbstractCegarLoop]: Abstraction has 2678 states and 4091 transitions. [2019-10-15 03:07:01,383 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 03:07:01,383 INFO L276 IsEmpty]: Start isEmpty. Operand 2678 states and 4091 transitions. [2019-10-15 03:07:01,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2019-10-15 03:07:01,396 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:07:01,397 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 5, 4, 3, 3, 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, 1, 1] [2019-10-15 03:07:01,397 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:07:01,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:07:01,398 INFO L82 PathProgramCache]: Analyzing trace with hash 716051481, now seen corresponding path program 1 times [2019-10-15 03:07:01,398 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:07:01,398 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327474684] [2019-10-15 03:07:01,399 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:07:01,399 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:07:01,399 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:07:01,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:07:01,854 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2019-10-15 03:07:01,855 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327474684] [2019-10-15 03:07:01,855 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:07:01,855 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-15 03:07:01,855 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491668478] [2019-10-15 03:07:01,858 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-15 03:07:01,858 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:07:01,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-15 03:07:01,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-10-15 03:07:01,859 INFO L87 Difference]: Start difference. First operand 2678 states and 4091 transitions. Second operand 9 states.