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_spec1_product31.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 03:07:46,087 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 03:07:46,090 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 03:07:46,103 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 03:07:46,103 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 03:07:46,104 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 03:07:46,106 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 03:07:46,108 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 03:07:46,109 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 03:07:46,110 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 03:07:46,111 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 03:07:46,113 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 03:07:46,113 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 03:07:46,114 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 03:07:46,115 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 03:07:46,116 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 03:07:46,117 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 03:07:46,118 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 03:07:46,121 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 03:07:46,123 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 03:07:46,124 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 03:07:46,126 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 03:07:46,127 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 03:07:46,128 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 03:07:46,130 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 03:07:46,130 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 03:07:46,130 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 03:07:46,131 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 03:07:46,132 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 03:07:46,133 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 03:07:46,133 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 03:07:46,134 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 03:07:46,135 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 03:07:46,135 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 03:07:46,136 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 03:07:46,136 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 03:07:46,137 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 03:07:46,137 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 03:07:46,138 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 03:07:46,139 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 03:07:46,139 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 03:07:46,140 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 03:07:46,155 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 03:07:46,156 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 03:07:46,157 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 03:07:46,157 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 03:07:46,157 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 03:07:46,158 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 03:07:46,158 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 03:07:46,158 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 03:07:46,158 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 03:07:46,158 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 03:07:46,159 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 03:07:46,159 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 03:07:46,159 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 03:07:46,159 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 03:07:46,159 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 03:07:46,160 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 03:07:46,160 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 03:07:46,160 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 03:07:46,160 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 03:07:46,160 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 03:07:46,161 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 03:07:46,161 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:07:46,161 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 03:07:46,161 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 03:07:46,162 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 03:07:46,162 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 03:07:46,162 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 03:07:46,162 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 03:07:46,162 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 03:07:46,476 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 03:07:46,489 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 03:07:46,493 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 03:07:46,495 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 03:07:46,495 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 03:07:46,496 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec1_product31.cil.c [2019-10-15 03:07:46,594 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ae3d2997/ad52705beac64d7a8acf70350789b23b/FLAG4805a48bd [2019-10-15 03:07:47,251 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 03:07:47,252 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec1_product31.cil.c [2019-10-15 03:07:47,294 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ae3d2997/ad52705beac64d7a8acf70350789b23b/FLAG4805a48bd [2019-10-15 03:07:47,509 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ae3d2997/ad52705beac64d7a8acf70350789b23b [2019-10-15 03:07:47,521 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 03:07:47,523 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 03:07:47,526 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 03:07:47,526 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 03:07:47,530 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 03:07:47,531 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:07:47" (1/1) ... [2019-10-15 03:07:47,535 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@243eae36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:47, skipping insertion in model container [2019-10-15 03:07:47,535 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:07:47" (1/1) ... [2019-10-15 03:07:47,545 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 03:07:47,650 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 03:07:48,473 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:07:48,503 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 03:07:48,677 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:07:48,752 INFO L192 MainTranslator]: Completed translation [2019-10-15 03:07:48,752 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:48 WrapperNode [2019-10-15 03:07:48,753 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 03:07:48,754 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 03:07:48,754 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 03:07:48,754 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 03:07:48,769 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:48" (1/1) ... [2019-10-15 03:07:48,770 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:48" (1/1) ... [2019-10-15 03:07:48,813 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:48" (1/1) ... [2019-10-15 03:07:48,814 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:48" (1/1) ... [2019-10-15 03:07:48,915 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:48" (1/1) ... [2019-10-15 03:07:48,953 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:48" (1/1) ... [2019-10-15 03:07:48,966 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:48" (1/1) ... [2019-10-15 03:07:48,997 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 03:07:48,998 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 03:07:48,999 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 03:07:48,999 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 03:07:49,003 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:48" (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 03:07:49,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 03:07:49,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 03:07:49,104 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 03:07:49,104 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 03:07:49,104 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 03:07:49,104 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 03:07:49,105 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 03:07:49,105 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 03:07:49,105 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 03:07:49,106 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 03:07:49,106 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-15 03:07:49,107 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-15 03:07:49,107 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-15 03:07:49,108 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-15 03:07:49,108 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-15 03:07:49,108 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-15 03:07:49,111 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__weight [2019-10-15 03:07:49,113 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-15 03:07:49,114 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-15 03:07:49,114 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-15 03:07:49,115 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-15 03:07:49,115 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-15 03:07:49,116 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-15 03:07:49,116 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-15 03:07:49,116 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-15 03:07:49,116 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-15 03:07:49,117 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-15 03:07:49,117 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2019-10-15 03:07:49,117 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__twothirdsfull [2019-10-15 03:07:49,117 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-15 03:07:49,118 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-15 03:07:49,118 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-15 03:07:49,119 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-15 03:07:49,119 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2019-10-15 03:07:49,119 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-15 03:07:49,119 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-15 03:07:49,120 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-15 03:07:49,120 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-15 03:07:49,120 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-15 03:07:49,121 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-15 03:07:49,121 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-10-15 03:07:49,121 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-10-15 03:07:49,121 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-15 03:07:49,121 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-15 03:07:49,122 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 03:07:49,122 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-15 03:07:49,122 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-15 03:07:49,122 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-15 03:07:49,123 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2019-10-15 03:07:49,123 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__2 [2019-10-15 03:07:49,123 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__3 [2019-10-15 03:07:49,123 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__4 [2019-10-15 03:07:49,124 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-15 03:07:49,124 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-15 03:07:49,124 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-15 03:07:49,124 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-15 03:07:49,124 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-15 03:07:49,125 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-15 03:07:49,125 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-15 03:07:49,126 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-15 03:07:49,126 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-15 03:07:49,126 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-15 03:07:49,127 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-15 03:07:49,127 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-15 03:07:49,127 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-15 03:07:49,127 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-15 03:07:49,127 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 03:07:49,128 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-15 03:07:49,128 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 03:07:49,128 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-15 03:07:49,129 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-15 03:07:49,129 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-15 03:07:49,130 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-15 03:07:49,131 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-15 03:07:49,131 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-15 03:07:49,131 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-15 03:07:49,132 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-15 03:07:49,132 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 03:07:49,133 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 03:07:49,133 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 03:07:49,134 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 03:07:49,134 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 03:07:49,135 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 03:07:49,135 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 03:07:49,135 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 03:07:49,135 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 03:07:49,136 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 03:07:49,137 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 03:07:49,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 03:07:49,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 03:07:49,137 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 03:07:49,137 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 03:07:49,138 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 03:07:49,138 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 03:07:49,138 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 03:07:49,138 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 03:07:49,138 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 03:07:49,139 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 03:07:49,139 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 03:07:49,139 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 03:07:49,139 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 03:07:49,140 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 03:07:49,140 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-15 03:07:49,140 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-15 03:07:49,140 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-15 03:07:49,141 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-15 03:07:49,141 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-15 03:07:49,141 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-15 03:07:49,142 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-15 03:07:49,142 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-15 03:07:49,142 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-15 03:07:49,142 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-15 03:07:49,143 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-15 03:07:49,143 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-15 03:07:49,143 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-15 03:07:49,144 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-15 03:07:49,144 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-15 03:07:49,144 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-15 03:07:49,144 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-15 03:07:49,145 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-15 03:07:49,145 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-15 03:07:49,145 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-15 03:07:49,146 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-10-15 03:07:49,146 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-10-15 03:07:49,147 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-15 03:07:49,147 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-15 03:07:49,148 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__weight [2019-10-15 03:07:49,148 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-15 03:07:49,148 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-15 03:07:49,148 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-15 03:07:49,148 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-15 03:07:49,149 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-15 03:07:49,149 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2019-10-15 03:07:49,150 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__twothirdsfull [2019-10-15 03:07:49,153 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-15 03:07:49,154 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-15 03:07:49,154 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-15 03:07:49,154 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2019-10-15 03:07:49,155 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-15 03:07:49,156 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-15 03:07:49,156 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-15 03:07:49,156 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__3 [2019-10-15 03:07:49,157 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-15 03:07:49,157 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-15 03:07:49,167 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-15 03:07:49,168 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-15 03:07:49,169 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-15 03:07:49,170 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-15 03:07:49,170 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-15 03:07:49,170 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-15 03:07:49,170 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 03:07:49,170 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2019-10-15 03:07:49,170 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__2 [2019-10-15 03:07:49,171 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__4 [2019-10-15 03:07:49,171 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 03:07:49,171 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-15 03:07:49,171 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-15 03:07:49,172 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-15 03:07:49,172 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-15 03:07:49,172 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-15 03:07:49,173 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-15 03:07:49,173 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-15 03:07:49,174 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-15 03:07:49,174 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-15 03:07:49,174 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-15 03:07:49,174 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-15 03:07:49,175 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 03:07:49,175 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-15 03:07:49,175 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 03:07:49,176 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 03:07:49,176 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 03:07:49,176 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 03:07:49,176 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-15 03:07:49,176 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 03:07:49,177 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 03:07:49,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 03:07:49,177 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 03:07:55,475 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 03:07:55,475 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-15 03:07:55,477 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:07:55 BoogieIcfgContainer [2019-10-15 03:07:55,477 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 03:07:55,478 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 03:07:55,479 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 03:07:55,482 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 03:07:55,482 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:07:47" (1/3) ... [2019-10-15 03:07:55,483 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4da3872 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:07:55, skipping insertion in model container [2019-10-15 03:07:55,483 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:48" (2/3) ... [2019-10-15 03:07:55,484 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4da3872 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:07:55, skipping insertion in model container [2019-10-15 03:07:55,484 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:07:55" (3/3) ... [2019-10-15 03:07:55,486 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product31.cil.c [2019-10-15 03:07:55,497 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 03:07:55,507 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 03:07:55,519 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 03:07:55,552 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 03:07:55,553 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 03:07:55,553 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 03:07:55,553 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 03:07:55,553 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 03:07:55,553 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 03:07:55,553 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 03:07:55,553 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 03:07:55,590 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states. [2019-10-15 03:07:55,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2019-10-15 03:07:55,621 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:07:55,623 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:07:55,625 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:07:55,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:07:55,632 INFO L82 PathProgramCache]: Analyzing trace with hash -1452797579, now seen corresponding path program 1 times [2019-10-15 03:07:55,641 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:07:55,641 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067420199] [2019-10-15 03:07:55,641 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:07:55,642 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:07:55,642 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:07:56,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:07:56,526 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-15 03:07:56,527 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067420199] [2019-10-15 03:07:56,528 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:07:56,528 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 03:07:56,528 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95315978] [2019-10-15 03:07:56,533 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 03:07:56,534 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:07:56,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 03:07:56,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 03:07:56,554 INFO L87 Difference]: Start difference. First operand 602 states. Second operand 2 states. [2019-10-15 03:07:56,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:07:56,656 INFO L93 Difference]: Finished difference Result 511 states and 751 transitions. [2019-10-15 03:07:56,657 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 03:07:56,659 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 135 [2019-10-15 03:07:56,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:07:56,689 INFO L225 Difference]: With dead ends: 511 [2019-10-15 03:07:56,690 INFO L226 Difference]: Without dead ends: 477 [2019-10-15 03:07:56,695 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 03:07:56,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2019-10-15 03:07:56,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 477. [2019-10-15 03:07:56,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 477 states. [2019-10-15 03:07:56,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 700 transitions. [2019-10-15 03:07:56,860 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 700 transitions. Word has length 135 [2019-10-15 03:07:56,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:07:56,867 INFO L462 AbstractCegarLoop]: Abstraction has 477 states and 700 transitions. [2019-10-15 03:07:56,867 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 03:07:56,867 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 700 transitions. [2019-10-15 03:07:56,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2019-10-15 03:07:56,883 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:07:56,883 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:07:56,883 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:07:56,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:07:56,884 INFO L82 PathProgramCache]: Analyzing trace with hash -4130734, now seen corresponding path program 1 times [2019-10-15 03:07:56,884 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:07:56,884 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029636350] [2019-10-15 03:07:56,885 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:07:56,885 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:07:56,885 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:07:57,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:07:57,573 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-15 03:07:57,574 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029636350] [2019-10-15 03:07:57,574 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:07:57,574 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 03:07:57,574 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927924668] [2019-10-15 03:07:57,578 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:07:57,578 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:07:57,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:07:57,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:07:57,584 INFO L87 Difference]: Start difference. First operand 477 states and 700 transitions. Second operand 7 states. [2019-10-15 03:08:03,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:08:03,663 INFO L93 Difference]: Finished difference Result 1336 states and 2011 transitions. [2019-10-15 03:08:03,663 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-15 03:08:03,663 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 136 [2019-10-15 03:08:03,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:08:03,674 INFO L225 Difference]: With dead ends: 1336 [2019-10-15 03:08:03,674 INFO L226 Difference]: Without dead ends: 912 [2019-10-15 03:08:03,681 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-15 03:08:03,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 912 states. [2019-10-15 03:08:03,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 912 to 887. [2019-10-15 03:08:03,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 887 states. [2019-10-15 03:08:03,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 887 states to 887 states and 1330 transitions. [2019-10-15 03:08:03,773 INFO L78 Accepts]: Start accepts. Automaton has 887 states and 1330 transitions. Word has length 136 [2019-10-15 03:08:03,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:08:03,774 INFO L462 AbstractCegarLoop]: Abstraction has 887 states and 1330 transitions. [2019-10-15 03:08:03,774 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 03:08:03,774 INFO L276 IsEmpty]: Start isEmpty. Operand 887 states and 1330 transitions. [2019-10-15 03:08:03,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2019-10-15 03:08:03,782 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:08:03,782 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:08:03,783 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:08:03,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:08:03,783 INFO L82 PathProgramCache]: Analyzing trace with hash 921546809, now seen corresponding path program 1 times [2019-10-15 03:08:03,783 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:08:03,784 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462613839] [2019-10-15 03:08:03,784 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:03,784 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:03,784 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:08:03,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:08:04,113 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-15 03:08:04,114 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462613839] [2019-10-15 03:08:04,114 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:08:04,114 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 03:08:04,114 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109309601] [2019-10-15 03:08:04,116 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 03:08:04,116 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:08:04,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 03:08:04,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-10-15 03:08:04,117 INFO L87 Difference]: Start difference. First operand 887 states and 1330 transitions. Second operand 6 states. [2019-10-15 03:08:05,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:08:05,051 INFO L93 Difference]: Finished difference Result 926 states and 1386 transitions. [2019-10-15 03:08:05,051 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:08:05,052 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 140 [2019-10-15 03:08:05,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:08:05,067 INFO L225 Difference]: With dead ends: 926 [2019-10-15 03:08:05,068 INFO L226 Difference]: Without dead ends: 909 [2019-10-15 03:08:05,070 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2019-10-15 03:08:05,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 909 states. [2019-10-15 03:08:05,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 909 to 891. [2019-10-15 03:08:05,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 891 states. [2019-10-15 03:08:05,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 891 states to 891 states and 1334 transitions. [2019-10-15 03:08:05,164 INFO L78 Accepts]: Start accepts. Automaton has 891 states and 1334 transitions. Word has length 140 [2019-10-15 03:08:05,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:08:05,165 INFO L462 AbstractCegarLoop]: Abstraction has 891 states and 1334 transitions. [2019-10-15 03:08:05,165 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 03:08:05,165 INFO L276 IsEmpty]: Start isEmpty. Operand 891 states and 1334 transitions. [2019-10-15 03:08:05,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2019-10-15 03:08:05,172 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:08:05,172 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:08:05,172 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:08:05,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:08:05,173 INFO L82 PathProgramCache]: Analyzing trace with hash -1929054002, now seen corresponding path program 1 times [2019-10-15 03:08:05,173 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:08:05,173 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446501789] [2019-10-15 03:08:05,174 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:05,174 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:05,174 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:08:05,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:08:05,514 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-15 03:08:05,514 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446501789] [2019-10-15 03:08:05,514 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:08:05,514 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-15 03:08:05,515 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046347475] [2019-10-15 03:08:05,516 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-15 03:08:05,516 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:08:05,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-15 03:08:05,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-15 03:08:05,517 INFO L87 Difference]: Start difference. First operand 891 states and 1334 transitions. Second operand 8 states. [2019-10-15 03:08:05,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:08:05,653 INFO L93 Difference]: Finished difference Result 912 states and 1360 transitions. [2019-10-15 03:08:05,653 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-15 03:08:05,653 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 145 [2019-10-15 03:08:05,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:08:05,664 INFO L225 Difference]: With dead ends: 912 [2019-10-15 03:08:05,664 INFO L226 Difference]: Without dead ends: 895 [2019-10-15 03:08:05,666 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-15 03:08:05,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 895 states. [2019-10-15 03:08:05,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 895 to 891. [2019-10-15 03:08:05,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 891 states. [2019-10-15 03:08:05,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 891 states to 891 states and 1332 transitions. [2019-10-15 03:08:05,742 INFO L78 Accepts]: Start accepts. Automaton has 891 states and 1332 transitions. Word has length 145 [2019-10-15 03:08:05,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:08:05,744 INFO L462 AbstractCegarLoop]: Abstraction has 891 states and 1332 transitions. [2019-10-15 03:08:05,744 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-15 03:08:05,744 INFO L276 IsEmpty]: Start isEmpty. Operand 891 states and 1332 transitions. [2019-10-15 03:08:05,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2019-10-15 03:08:05,749 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:08:05,750 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:08:05,750 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:08:05,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:08:05,750 INFO L82 PathProgramCache]: Analyzing trace with hash -616685527, now seen corresponding path program 1 times [2019-10-15 03:08:05,751 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:08:05,752 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593612191] [2019-10-15 03:08:05,752 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:05,752 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:05,752 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:08:05,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:08:07,431 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-15 03:08:07,431 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593612191] [2019-10-15 03:08:07,431 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1552664837] [2019-10-15 03:08:07,432 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 03:08:08,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:08:08,221 INFO L256 TraceCheckSpWp]: Trace formula consists of 3298 conjuncts, 13 conjunts are in the unsatisfiable core [2019-10-15 03:08:08,241 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:08:08,428 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:08:08,673 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-15 03:08:08,673 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:08:09,267 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:08:09,759 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-15 03:08:09,759 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 03:08:09,759 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [32] total 37 [2019-10-15 03:08:09,760 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971517028] [2019-10-15 03:08:09,761 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:08:09,761 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:08:09,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:08:09,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=1229, Unknown=0, NotChecked=0, Total=1332 [2019-10-15 03:08:09,762 INFO L87 Difference]: Start difference. First operand 891 states and 1332 transitions. Second operand 7 states. [2019-10-15 03:08:09,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:08:09,913 INFO L93 Difference]: Finished difference Result 934 states and 1386 transitions. [2019-10-15 03:08:09,913 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-15 03:08:09,917 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 160 [2019-10-15 03:08:09,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:08:09,927 INFO L225 Difference]: With dead ends: 934 [2019-10-15 03:08:09,927 INFO L226 Difference]: Without dead ends: 917 [2019-10-15 03:08:09,931 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 328 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=107, Invalid=1299, Unknown=0, NotChecked=0, Total=1406 [2019-10-15 03:08:09,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 917 states. [2019-10-15 03:08:10,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 917 to 903. [2019-10-15 03:08:10,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 903 states. [2019-10-15 03:08:10,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 903 states to 903 states and 1344 transitions. [2019-10-15 03:08:10,026 INFO L78 Accepts]: Start accepts. Automaton has 903 states and 1344 transitions. Word has length 160 [2019-10-15 03:08:10,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:08:10,029 INFO L462 AbstractCegarLoop]: Abstraction has 903 states and 1344 transitions. [2019-10-15 03:08:10,029 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 03:08:10,030 INFO L276 IsEmpty]: Start isEmpty. Operand 903 states and 1344 transitions. [2019-10-15 03:08:10,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2019-10-15 03:08:10,037 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:08:10,037 INFO L380 BasicCegarLoop]: trace histogram [7, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:08:10,248 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:08:10,249 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:08:10,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:08:10,249 INFO L82 PathProgramCache]: Analyzing trace with hash -252326484, now seen corresponding path program 1 times [2019-10-15 03:08:10,250 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:08:10,250 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855206757] [2019-10-15 03:08:10,250 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:10,250 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:10,251 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:08:10,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:08:11,027 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2019-10-15 03:08:11,027 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855206757] [2019-10-15 03:08:11,028 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [307355536] [2019-10-15 03:08:11,028 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 03:08:11,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:08:11,713 INFO L256 TraceCheckSpWp]: Trace formula consists of 3362 conjuncts, 41 conjunts are in the unsatisfiable core [2019-10-15 03:08:11,725 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:08:11,978 WARN L191 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 38 [2019-10-15 03:08:12,740 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 29 proven. 2 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-15 03:08:12,740 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:08:12,938 WARN L191 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 43 [2019-10-15 03:08:13,080 WARN L191 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2019-10-15 03:08:13,362 WARN L191 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 12 [2019-10-15 03:08:13,601 WARN L191 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 54