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_spec2_product18.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 03:07:53,849 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 03:07:53,853 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 03:07:53,874 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 03:07:53,875 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 03:07:53,877 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 03:07:53,880 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 03:07:53,890 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 03:07:53,895 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 03:07:53,896 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 03:07:53,898 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 03:07:53,900 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 03:07:53,900 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 03:07:53,903 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 03:07:53,907 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 03:07:53,909 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 03:07:53,911 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 03:07:53,914 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 03:07:53,915 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 03:07:53,920 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 03:07:53,924 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 03:07:53,928 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 03:07:53,931 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 03:07:53,932 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 03:07:53,937 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 03:07:53,938 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 03:07:53,938 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 03:07:53,941 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 03:07:53,942 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 03:07:53,944 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 03:07:53,944 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 03:07:53,946 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 03:07:53,947 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 03:07:53,948 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 03:07:53,950 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 03:07:53,950 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 03:07:53,951 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 03:07:53,951 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 03:07:53,951 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 03:07:53,953 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 03:07:53,955 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 03:07:53,957 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 03:07:53,982 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 03:07:53,982 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 03:07:53,984 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 03:07:53,985 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 03:07:53,985 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 03:07:53,985 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 03:07:53,986 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 03:07:53,986 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 03:07:53,986 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 03:07:53,986 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 03:07:53,988 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 03:07:53,988 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 03:07:53,988 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 03:07:53,989 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 03:07:53,989 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 03:07:53,989 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 03:07:53,990 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 03:07:53,990 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 03:07:53,990 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 03:07:53,990 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 03:07:53,991 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 03:07:53,991 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:07:53,991 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 03:07:53,992 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 03:07:53,992 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 03:07:53,992 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 03:07:53,992 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 03:07:53,992 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 03:07:53,993 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 03:07:54,388 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 03:07:54,422 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 03:07:54,427 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 03:07:54,430 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 03:07:54,431 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 03:07:54,432 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec2_product18.cil.c [2019-10-15 03:07:54,538 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4c4bdc0b/79c4d20e133549408766cc4bbb4b896b/FLAG47650c420 [2019-10-15 03:07:55,248 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 03:07:55,249 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec2_product18.cil.c [2019-10-15 03:07:55,282 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4c4bdc0b/79c4d20e133549408766cc4bbb4b896b/FLAG47650c420 [2019-10-15 03:07:55,446 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4c4bdc0b/79c4d20e133549408766cc4bbb4b896b [2019-10-15 03:07:55,459 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 03:07:55,461 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 03:07:55,468 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 03:07:55,468 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 03:07:55,475 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 03:07:55,476 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:07:55" (1/1) ... [2019-10-15 03:07:55,487 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f1172d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:55, skipping insertion in model container [2019-10-15 03:07:55,489 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:07:55" (1/1) ... [2019-10-15 03:07:55,519 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 03:07:55,617 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 03:07:56,520 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:07:56,546 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 03:07:56,679 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:07:56,761 INFO L192 MainTranslator]: Completed translation [2019-10-15 03:07:56,762 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:56 WrapperNode [2019-10-15 03:07:56,763 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 03:07:56,764 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 03:07:56,764 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 03:07:56,764 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 03:07:56,778 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:56" (1/1) ... [2019-10-15 03:07:56,779 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:56" (1/1) ... [2019-10-15 03:07:56,824 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:56" (1/1) ... [2019-10-15 03:07:56,825 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:56" (1/1) ... [2019-10-15 03:07:56,905 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:56" (1/1) ... [2019-10-15 03:07:56,929 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:56" (1/1) ... [2019-10-15 03:07:56,940 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:56" (1/1) ... [2019-10-15 03:07:56,962 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 03:07:56,963 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 03:07:56,964 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 03:07:56,964 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 03:07:56,966 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:56" (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 03:07:57,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 03:07:57,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 03:07:57,102 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 03:07:57,102 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-15 03:07:57,102 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-15 03:07:57,103 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 03:07:57,104 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-15 03:07:57,105 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-15 03:07:57,105 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-15 03:07:57,105 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 03:07:57,106 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 03:07:57,107 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 03:07:57,108 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 03:07:57,108 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-15 03:07:57,109 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-15 03:07:57,109 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-15 03:07:57,112 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-15 03:07:57,113 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-15 03:07:57,113 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-15 03:07:57,114 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-15 03:07:57,114 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-15 03:07:57,115 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-15 03:07:57,115 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-15 03:07:57,115 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-15 03:07:57,115 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-15 03:07:57,116 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-15 03:07:57,116 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-15 03:07:57,116 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-15 03:07:57,116 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-15 03:07:57,116 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-15 03:07:57,117 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-15 03:07:57,117 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-15 03:07:57,118 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-15 03:07:57,118 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-15 03:07:57,118 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-15 03:07:57,118 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__weight [2019-10-15 03:07:57,119 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-15 03:07:57,119 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__wrappee__weight [2019-10-15 03:07:57,119 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-15 03:07:57,119 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-15 03:07:57,119 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 03:07:57,120 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 03:07:57,120 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 03:07:57,120 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 03:07:57,120 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 03:07:57,121 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 03:07:57,121 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 03:07:57,121 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-15 03:07:57,122 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-15 03:07:57,122 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-15 03:07:57,122 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-15 03:07:57,122 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-15 03:07:57,123 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-15 03:07:57,123 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-15 03:07:57,123 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-15 03:07:57,124 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-15 03:07:57,124 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-15 03:07:57,124 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-15 03:07:57,125 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-15 03:07:57,125 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-15 03:07:57,126 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-15 03:07:57,126 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 03:07:57,126 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-15 03:07:57,127 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 03:07:57,127 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2019-10-15 03:07:57,127 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2019-10-15 03:07:57,127 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__3 [2019-10-15 03:07:57,128 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__4 [2019-10-15 03:07:57,128 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-15 03:07:57,128 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-15 03:07:57,128 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-15 03:07:57,129 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-15 03:07:57,129 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-15 03:07:57,130 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-15 03:07:57,130 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-15 03:07:57,131 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-15 03:07:57,132 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 03:07:57,132 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 03:07:57,132 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-15 03:07:57,132 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-15 03:07:57,133 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-15 03:07:57,134 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-15 03:07:57,134 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-15 03:07:57,134 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-15 03:07:57,135 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-15 03:07:57,135 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-15 03:07:57,135 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-15 03:07:57,137 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-15 03:07:57,137 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-15 03:07:57,137 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 03:07:57,138 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-15 03:07:57,138 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-15 03:07:57,138 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 03:07:57,138 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 03:07:57,139 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 03:07:57,139 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 03:07:57,139 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 03:07:57,140 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-15 03:07:57,140 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-15 03:07:57,140 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-15 03:07:57,140 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-15 03:07:57,141 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-15 03:07:57,141 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-15 03:07:57,141 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-15 03:07:57,141 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-15 03:07:57,142 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-15 03:07:57,142 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-15 03:07:57,142 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-15 03:07:57,142 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-15 03:07:57,143 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-15 03:07:57,143 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-15 03:07:57,143 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-15 03:07:57,143 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-15 03:07:57,144 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2019-10-15 03:07:57,144 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-15 03:07:57,145 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-15 03:07:57,145 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-15 03:07:57,145 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-15 03:07:57,145 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-15 03:07:57,146 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-15 03:07:57,146 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-15 03:07:57,147 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-15 03:07:57,147 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-15 03:07:57,147 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__weight [2019-10-15 03:07:57,148 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__3 [2019-10-15 03:07:57,149 INFO L130 BoogieDeclarations]: Found specification of procedure printState__wrappee__weight [2019-10-15 03:07:57,149 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 03:07:57,150 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-15 03:07:57,150 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 03:07:57,150 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 03:07:57,151 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 03:07:57,151 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 03:07:57,152 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 03:07:57,153 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 03:07:57,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 03:07:57,158 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 03:07:57,158 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 03:07:57,158 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 03:07:57,159 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 03:07:57,159 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 03:07:57,159 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 03:07:57,160 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 03:07:57,160 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 03:07:57,161 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 03:07:57,169 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 03:07:57,169 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 03:07:57,169 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-15 03:07:57,169 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-15 03:07:57,169 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-15 03:07:57,170 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-15 03:07:57,170 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-15 03:07:57,170 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-15 03:07:57,170 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-15 03:07:57,170 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-15 03:07:57,170 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-15 03:07:57,171 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-15 03:07:57,171 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-15 03:07:57,171 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-15 03:07:57,172 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 03:07:57,172 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2019-10-15 03:07:57,172 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__4 [2019-10-15 03:07:57,173 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-15 03:07:57,173 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 03:07:57,173 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-15 03:07:57,173 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 03:07:57,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 03:07:57,173 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 03:08:03,572 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 03:08:03,573 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-15 03:08:03,575 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:08:03 BoogieIcfgContainer [2019-10-15 03:08:03,576 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 03:08:03,577 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 03:08:03,577 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 03:08:03,580 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 03:08:03,581 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:07:55" (1/3) ... [2019-10-15 03:08:03,581 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b835b4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:08:03, skipping insertion in model container [2019-10-15 03:08:03,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:56" (2/3) ... [2019-10-15 03:08:03,582 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b835b4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:08:03, skipping insertion in model container [2019-10-15 03:08:03,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:08:03" (3/3) ... [2019-10-15 03:08:03,584 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product18.cil.c [2019-10-15 03:08:03,596 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 03:08:03,606 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 03:08:03,618 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 03:08:03,651 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 03:08:03,652 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 03:08:03,652 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 03:08:03,652 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 03:08:03,652 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 03:08:03,653 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 03:08:03,653 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 03:08:03,653 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 03:08:03,692 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states. [2019-10-15 03:08:03,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2019-10-15 03:08:03,711 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:08:03,712 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:08:03,714 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:08:03,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:08:03,724 INFO L82 PathProgramCache]: Analyzing trace with hash -1802026042, now seen corresponding path program 1 times [2019-10-15 03:08:03,734 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:08:03,735 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414989217] [2019-10-15 03:08:03,735 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:03,735 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:03,735 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:08:04,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:08:04,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:08:04,528 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414989217] [2019-10-15 03:08:04,529 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:08:04,529 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 03:08:04,530 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392032248] [2019-10-15 03:08:04,536 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 03:08:04,536 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:08:04,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 03:08:04,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 03:08:04,556 INFO L87 Difference]: Start difference. First operand 557 states. Second operand 2 states. [2019-10-15 03:08:04,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:08:04,636 INFO L93 Difference]: Finished difference Result 454 states and 681 transitions. [2019-10-15 03:08:04,636 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 03:08:04,638 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 74 [2019-10-15 03:08:04,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:08:04,694 INFO L225 Difference]: With dead ends: 454 [2019-10-15 03:08:04,695 INFO L226 Difference]: Without dead ends: 420 [2019-10-15 03:08:04,702 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 03:08:04,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2019-10-15 03:08:04,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 420. [2019-10-15 03:08:04,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 420 states. [2019-10-15 03:08:04,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 630 transitions. [2019-10-15 03:08:04,882 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 630 transitions. Word has length 74 [2019-10-15 03:08:04,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:08:04,885 INFO L462 AbstractCegarLoop]: Abstraction has 420 states and 630 transitions. [2019-10-15 03:08:04,885 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 03:08:04,885 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 630 transitions. [2019-10-15 03:08:04,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2019-10-15 03:08:04,898 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:08:04,898 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:08:04,900 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:08:04,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:08:04,901 INFO L82 PathProgramCache]: Analyzing trace with hash 51124958, now seen corresponding path program 1 times [2019-10-15 03:08:04,901 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:08:04,902 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801638031] [2019-10-15 03:08:04,902 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:04,902 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:04,902 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:08:05,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:08:05,448 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 6 [2019-10-15 03:08:05,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:08:05,502 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801638031] [2019-10-15 03:08:05,502 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:08:05,502 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 03:08:05,503 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828352013] [2019-10-15 03:08:05,505 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 03:08:05,505 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:08:05,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 03:08:05,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-15 03:08:05,506 INFO L87 Difference]: Start difference. First operand 420 states and 630 transitions. Second operand 6 states. [2019-10-15 03:08:09,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:08:09,788 INFO L93 Difference]: Finished difference Result 1285 states and 1996 transitions. [2019-10-15 03:08:09,789 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 03:08:09,789 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 75 [2019-10-15 03:08:09,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:08:09,806 INFO L225 Difference]: With dead ends: 1285 [2019-10-15 03:08:09,807 INFO L226 Difference]: Without dead ends: 907 [2019-10-15 03:08:09,815 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2019-10-15 03:08:09,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 907 states. [2019-10-15 03:08:09,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 907 to 814. [2019-10-15 03:08:09,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 814 states. [2019-10-15 03:08:09,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 814 states to 814 states and 1267 transitions. [2019-10-15 03:08:09,936 INFO L78 Accepts]: Start accepts. Automaton has 814 states and 1267 transitions. Word has length 75 [2019-10-15 03:08:09,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:08:09,936 INFO L462 AbstractCegarLoop]: Abstraction has 814 states and 1267 transitions. [2019-10-15 03:08:09,937 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 03:08:09,937 INFO L276 IsEmpty]: Start isEmpty. Operand 814 states and 1267 transitions. [2019-10-15 03:08:09,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2019-10-15 03:08:09,943 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:08:09,944 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:08:09,944 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:08:09,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:08:09,945 INFO L82 PathProgramCache]: Analyzing trace with hash -2067693136, now seen corresponding path program 1 times [2019-10-15 03:08:09,945 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:08:09,945 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193749614] [2019-10-15 03:08:09,945 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:09,946 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:09,946 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:08:10,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:08:10,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:08:10,293 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193749614] [2019-10-15 03:08:10,293 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:08:10,294 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-15 03:08:10,294 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729558877] [2019-10-15 03:08:10,295 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-15 03:08:10,295 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:08:10,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-15 03:08:10,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-15 03:08:10,296 INFO L87 Difference]: Start difference. First operand 814 states and 1267 transitions. Second operand 12 states. [2019-10-15 03:08:20,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:08:20,880 INFO L93 Difference]: Finished difference Result 2432 states and 3817 transitions. [2019-10-15 03:08:20,880 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-10-15 03:08:20,881 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 102 [2019-10-15 03:08:20,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:08:20,897 INFO L225 Difference]: With dead ends: 2432 [2019-10-15 03:08:20,898 INFO L226 Difference]: Without dead ends: 1660 [2019-10-15 03:08:20,905 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=156, Invalid=836, Unknown=0, NotChecked=0, Total=992 [2019-10-15 03:08:20,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1660 states. [2019-10-15 03:08:21,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1660 to 1601. [2019-10-15 03:08:21,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1601 states. [2019-10-15 03:08:21,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1601 states to 1601 states and 2497 transitions. [2019-10-15 03:08:21,115 INFO L78 Accepts]: Start accepts. Automaton has 1601 states and 2497 transitions. Word has length 102 [2019-10-15 03:08:21,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:08:21,116 INFO L462 AbstractCegarLoop]: Abstraction has 1601 states and 2497 transitions. [2019-10-15 03:08:21,116 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-15 03:08:21,116 INFO L276 IsEmpty]: Start isEmpty. Operand 1601 states and 2497 transitions. [2019-10-15 03:08:21,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2019-10-15 03:08:21,124 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:08:21,125 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:08:21,125 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:08:21,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:08:21,126 INFO L82 PathProgramCache]: Analyzing trace with hash -1938272702, now seen corresponding path program 1 times [2019-10-15 03:08:21,126 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:08:21,127 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409546017] [2019-10-15 03:08:21,127 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:21,127 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:21,128 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:08:21,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:08:21,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:08:21,460 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409546017] [2019-10-15 03:08:21,460 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:08:21,460 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-15 03:08:21,461 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376759677] [2019-10-15 03:08:21,463 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-15 03:08:21,463 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:08:21,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-15 03:08:21,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-15 03:08:21,465 INFO L87 Difference]: Start difference. First operand 1601 states and 2497 transitions. Second operand 8 states. [2019-10-15 03:08:21,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:08:21,647 INFO L93 Difference]: Finished difference Result 3440 states and 5450 transitions. [2019-10-15 03:08:21,647 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-15 03:08:21,647 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 103 [2019-10-15 03:08:21,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:08:21,670 INFO L225 Difference]: With dead ends: 3440 [2019-10-15 03:08:21,670 INFO L226 Difference]: Without dead ends: 1883 [2019-10-15 03:08:21,685 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-15 03:08:21,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1883 states. [2019-10-15 03:08:22,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1883 to 1625. [2019-10-15 03:08:22,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1625 states. [2019-10-15 03:08:22,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1625 states to 1625 states and 2521 transitions. [2019-10-15 03:08:22,035 INFO L78 Accepts]: Start accepts. Automaton has 1625 states and 2521 transitions. Word has length 103 [2019-10-15 03:08:22,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:08:22,036 INFO L462 AbstractCegarLoop]: Abstraction has 1625 states and 2521 transitions. [2019-10-15 03:08:22,036 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-15 03:08:22,036 INFO L276 IsEmpty]: Start isEmpty. Operand 1625 states and 2521 transitions. [2019-10-15 03:08:22,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2019-10-15 03:08:22,041 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:08:22,041 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:08:22,041 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:08:22,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:08:22,042 INFO L82 PathProgramCache]: Analyzing trace with hash 1156112179, now seen corresponding path program 1 times [2019-10-15 03:08:22,042 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:08:22,042 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353231569] [2019-10-15 03:08:22,043 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:22,043 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:22,043 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:08:22,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:08:22,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:08:22,443 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353231569] [2019-10-15 03:08:22,444 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:08:22,444 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 03:08:22,444 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918920331] [2019-10-15 03:08:22,445 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:08:22,446 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:08:22,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:08:22,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:08:22,447 INFO L87 Difference]: Start difference. First operand 1625 states and 2521 transitions. Second operand 7 states. [2019-10-15 03:08:27,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:08:27,795 INFO L93 Difference]: Finished difference Result 4452 states and 6996 transitions. [2019-10-15 03:08:27,796 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-10-15 03:08:27,796 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 107 [2019-10-15 03:08:27,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:08:27,823 INFO L225 Difference]: With dead ends: 4452 [2019-10-15 03:08:27,824 INFO L226 Difference]: Without dead ends: 2871 [2019-10-15 03:08:27,835 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2019-10-15 03:08:27,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2871 states. [2019-10-15 03:08:28,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2871 to 2806. [2019-10-15 03:08:28,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2806 states. [2019-10-15 03:08:28,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2806 states to 2806 states and 4431 transitions. [2019-10-15 03:08:28,055 INFO L78 Accepts]: Start accepts. Automaton has 2806 states and 4431 transitions. Word has length 107 [2019-10-15 03:08:28,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:08:28,056 INFO L462 AbstractCegarLoop]: Abstraction has 2806 states and 4431 transitions. [2019-10-15 03:08:28,056 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 03:08:28,056 INFO L276 IsEmpty]: Start isEmpty. Operand 2806 states and 4431 transitions. [2019-10-15 03:08:28,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2019-10-15 03:08:28,064 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:08:28,065 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:08:28,065 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:08:28,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:08:28,066 INFO L82 PathProgramCache]: Analyzing trace with hash 1331959084, now seen corresponding path program 1 times [2019-10-15 03:08:28,066 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:08:28,067 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137910312] [2019-10-15 03:08:28,067 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:28,067 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:28,067 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:08:28,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:08:28,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:08:28,273 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137910312] [2019-10-15 03:08:28,274 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:08:28,274 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 03:08:28,275 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715861977] [2019-10-15 03:08:28,276 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 03:08:28,276 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:08:28,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 03:08:28,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:08:28,277 INFO L87 Difference]: Start difference. First operand 2806 states and 4431 transitions. Second operand 5 states. [2019-10-15 03:08:28,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:08:28,418 INFO L93 Difference]: Finished difference Result 4889 states and 7751 transitions. [2019-10-15 03:08:28,418 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:08:28,419 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 111 [2019-10-15 03:08:28,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:08:28,442 INFO L225 Difference]: With dead ends: 4889 [2019-10-15 03:08:28,442 INFO L226 Difference]: Without dead ends: 2870 [2019-10-15 03:08:28,455 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 03:08:28,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2870 states. [2019-10-15 03:08:28,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2870 to 2846. [2019-10-15 03:08:28,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2846 states. [2019-10-15 03:08:28,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2846 states to 2846 states and 4481 transitions. [2019-10-15 03:08:28,745 INFO L78 Accepts]: Start accepts. Automaton has 2846 states and 4481 transitions. Word has length 111 [2019-10-15 03:08:28,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:08:28,746 INFO L462 AbstractCegarLoop]: Abstraction has 2846 states and 4481 transitions. [2019-10-15 03:08:28,746 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 03:08:28,746 INFO L276 IsEmpty]: Start isEmpty. Operand 2846 states and 4481 transitions. [2019-10-15 03:08:28,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2019-10-15 03:08:28,750 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:08:28,750 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:08:28,751 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:08:28,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:08:28,752 INFO L82 PathProgramCache]: Analyzing trace with hash 369379332, now seen corresponding path program 1 times [2019-10-15 03:08:28,752 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:08:28,753 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659292597] [2019-10-15 03:08:28,753 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:28,753 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:28,753 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:08:28,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:08:29,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:08:29,044 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659292597] [2019-10-15 03:08:29,044 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:08:29,044 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 03:08:29,045 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878351375] [2019-10-15 03:08:29,046 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:08:29,046 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:08:29,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:08:29,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:08:29,047 INFO L87 Difference]: Start difference. First operand 2846 states and 4481 transitions. Second operand 7 states. [2019-10-15 03:08:34,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:08:34,256 INFO L93 Difference]: Finished difference Result 6776 states and 10686 transitions. [2019-10-15 03:08:34,260 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-15 03:08:34,260 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 115 [2019-10-15 03:08:34,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:08:34,297 INFO L225 Difference]: With dead ends: 6776 [2019-10-15 03:08:34,297 INFO L226 Difference]: Without dead ends: 4525 [2019-10-15 03:08:34,310 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2019-10-15 03:08:34,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4525 states. [2019-10-15 03:08:34,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4525 to 4461. [2019-10-15 03:08:34,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4461 states. [2019-10-15 03:08:34,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4461 states to 4461 states and 6870 transitions. [2019-10-15 03:08:34,562 INFO L78 Accepts]: Start accepts. Automaton has 4461 states and 6870 transitions. Word has length 115 [2019-10-15 03:08:34,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:08:34,563 INFO L462 AbstractCegarLoop]: Abstraction has 4461 states and 6870 transitions. [2019-10-15 03:08:34,563 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 03:08:34,563 INFO L276 IsEmpty]: Start isEmpty. Operand 4461 states and 6870 transitions. [2019-10-15 03:08:34,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2019-10-15 03:08:34,567 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:08:34,567 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:08:34,567 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:08:34,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:08:34,568 INFO L82 PathProgramCache]: Analyzing trace with hash -97141019, now seen corresponding path program 1 times [2019-10-15 03:08:34,568 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:08:34,568 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015041057] [2019-10-15 03:08:34,568 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:34,568 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:34,568 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:08:34,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:08:35,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:08:35,033 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015041057] [2019-10-15 03:08:35,033 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:08:35,033 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 03:08:35,034 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804406609] [2019-10-15 03:08:35,034 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:08:35,035 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:08:35,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:08:35,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:08:35,036 INFO L87 Difference]: Start difference. First operand 4461 states and 6870 transitions. Second operand 7 states. [2019-10-15 03:08:35,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:08:35,558 INFO L93 Difference]: Finished difference Result 8867 states and 13964 transitions. [2019-10-15 03:08:35,559 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 03:08:35,559 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 118 [2019-10-15 03:08:35,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:08:35,583 INFO L225 Difference]: With dead ends: 8867 [2019-10-15 03:08:35,584 INFO L226 Difference]: Without dead ends: 4461 [2019-10-15 03:08:35,604 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-15 03:08:35,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4461 states.