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_product22.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 03:08:25,046 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 03:08:25,049 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 03:08:25,070 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 03:08:25,070 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 03:08:25,073 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 03:08:25,075 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 03:08:25,084 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 03:08:25,089 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 03:08:25,092 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 03:08:25,094 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 03:08:25,096 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 03:08:25,096 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 03:08:25,098 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 03:08:25,101 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 03:08:25,102 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 03:08:25,103 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 03:08:25,104 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 03:08:25,106 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 03:08:25,108 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 03:08:25,110 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 03:08:25,111 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 03:08:25,112 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 03:08:25,113 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 03:08:25,115 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 03:08:25,116 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 03:08:25,116 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 03:08:25,117 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 03:08:25,118 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 03:08:25,119 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 03:08:25,119 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 03:08:25,121 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 03:08:25,122 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 03:08:25,123 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 03:08:25,124 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 03:08:25,124 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 03:08:25,125 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 03:08:25,125 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 03:08:25,125 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 03:08:25,126 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 03:08:25,127 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 03:08:25,128 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 03:08:25,164 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 03:08:25,164 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 03:08:25,166 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 03:08:25,167 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 03:08:25,167 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 03:08:25,167 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 03:08:25,167 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 03:08:25,168 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 03:08:25,168 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 03:08:25,168 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 03:08:25,168 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 03:08:25,168 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 03:08:25,169 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 03:08:25,169 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 03:08:25,170 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 03:08:25,170 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 03:08:25,170 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 03:08:25,171 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 03:08:25,171 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 03:08:25,171 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 03:08:25,171 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 03:08:25,172 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:08:25,172 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 03:08:25,172 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 03:08:25,172 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 03:08:25,173 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 03:08:25,173 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 03:08:25,173 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 03:08:25,173 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 03:08:25,492 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 03:08:25,517 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 03:08:25,521 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 03:08:25,524 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 03:08:25,525 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 03:08:25,526 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec2_product22.cil.c [2019-10-15 03:08:25,612 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e43adf24a/ca6417b8cf85494a93e28f88c1b849a4/FLAGcfcb2a7ae [2019-10-15 03:08:26,402 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 03:08:26,403 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec2_product22.cil.c [2019-10-15 03:08:26,449 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e43adf24a/ca6417b8cf85494a93e28f88c1b849a4/FLAGcfcb2a7ae [2019-10-15 03:08:26,530 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e43adf24a/ca6417b8cf85494a93e28f88c1b849a4 [2019-10-15 03:08:26,543 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 03:08:26,545 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 03:08:26,549 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 03:08:26,549 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 03:08:26,553 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 03:08:26,554 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:08:26" (1/1) ... [2019-10-15 03:08:26,557 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bfc0887 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:08:26, skipping insertion in model container [2019-10-15 03:08:26,558 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:08:26" (1/1) ... [2019-10-15 03:08:26,566 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 03:08:26,670 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 03:08:27,427 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:08:27,454 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 03:08:27,648 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:08:27,738 INFO L192 MainTranslator]: Completed translation [2019-10-15 03:08:27,739 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:08:27 WrapperNode [2019-10-15 03:08:27,739 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 03:08:27,740 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 03:08:27,740 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 03:08:27,740 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 03:08:27,754 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:08:27" (1/1) ... [2019-10-15 03:08:27,755 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:08:27" (1/1) ... [2019-10-15 03:08:27,829 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:08:27" (1/1) ... [2019-10-15 03:08:27,832 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:08:27" (1/1) ... [2019-10-15 03:08:27,917 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:08:27" (1/1) ... [2019-10-15 03:08:27,957 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:08:27" (1/1) ... [2019-10-15 03:08:27,976 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:08:27" (1/1) ... [2019-10-15 03:08:28,007 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 03:08:28,008 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 03:08:28,009 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 03:08:28,009 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 03:08:28,011 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:08:27" (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 03:08:28,091 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 03:08:28,091 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 03:08:28,091 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 03:08:28,092 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 03:08:28,092 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-15 03:08:28,094 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-15 03:08:28,095 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-15 03:08:28,096 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-15 03:08:28,096 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-15 03:08:28,096 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-15 03:08:28,097 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-15 03:08:28,098 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-15 03:08:28,099 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-15 03:08:28,099 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-15 03:08:28,099 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-15 03:08:28,100 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-15 03:08:28,102 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-15 03:08:28,103 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-15 03:08:28,103 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 03:08:28,104 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-15 03:08:28,104 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 03:08:28,104 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-15 03:08:28,105 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-15 03:08:28,105 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-15 03:08:28,105 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-15 03:08:28,106 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-15 03:08:28,106 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-15 03:08:28,106 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-15 03:08:28,106 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-15 03:08:28,107 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 03:08:28,107 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 03:08:28,107 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 03:08:28,107 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 03:08:28,107 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 03:08:28,108 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 03:08:28,108 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 03:08:28,108 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-15 03:08:28,108 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-15 03:08:28,108 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-15 03:08:28,108 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 03:08:28,109 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 03:08:28,109 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 03:08:28,109 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 03:08:28,109 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-15 03:08:28,109 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-15 03:08:28,110 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-15 03:08:28,110 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-15 03:08:28,110 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-15 03:08:28,110 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-15 03:08:28,110 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-15 03:08:28,110 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-15 03:08:28,111 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-15 03:08:28,111 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-15 03:08:28,111 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-15 03:08:28,111 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-15 03:08:28,111 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-15 03:08:28,112 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-15 03:08:28,112 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-15 03:08:28,112 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-15 03:08:28,113 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2019-10-15 03:08:28,113 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-15 03:08:28,113 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-15 03:08:28,114 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-15 03:08:28,114 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-10-15 03:08:28,114 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-15 03:08:28,114 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-15 03:08:28,114 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-15 03:08:28,115 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__twothirdsfull [2019-10-15 03:08:28,115 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-15 03:08:28,115 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__wrappee__twothirdsfull [2019-10-15 03:08:28,115 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-15 03:08:28,115 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-15 03:08:28,116 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-15 03:08:28,116 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-15 03:08:28,117 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2019-10-15 03:08:28,117 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2019-10-15 03:08:28,118 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__3 [2019-10-15 03:08:28,118 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__4 [2019-10-15 03:08:28,118 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 03:08:28,119 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 03:08:28,119 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 03:08:28,120 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 03:08:28,120 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-15 03:08:28,121 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-15 03:08:28,121 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-15 03:08:28,121 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-15 03:08:28,121 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-15 03:08:28,122 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-15 03:08:28,122 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-15 03:08:28,123 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-15 03:08:28,123 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-15 03:08:28,123 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-15 03:08:28,123 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-15 03:08:28,123 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-15 03:08:28,124 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-15 03:08:28,124 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-15 03:08:28,124 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-15 03:08:28,124 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-15 03:08:28,124 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-15 03:08:28,125 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-15 03:08:28,125 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-15 03:08:28,125 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-15 03:08:28,125 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-15 03:08:28,125 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 03:08:28,125 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2019-10-15 03:08:28,126 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__4 [2019-10-15 03:08:28,126 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 03:08:28,126 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-15 03:08:28,126 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 03:08:28,126 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 03:08:28,127 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 03:08:28,127 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 03:08:28,127 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-15 03:08:28,127 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-15 03:08:28,128 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-15 03:08:28,128 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-15 03:08:28,128 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-15 03:08:28,129 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-15 03:08:28,129 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-15 03:08:28,129 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 03:08:28,130 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 03:08:28,130 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 03:08:28,131 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 03:08:28,131 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 03:08:28,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 03:08:28,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 03:08:28,132 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 03:08:28,132 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 03:08:28,133 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 03:08:28,133 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 03:08:28,133 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 03:08:28,133 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 03:08:28,134 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 03:08:28,135 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 03:08:28,138 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 03:08:28,142 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 03:08:28,143 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-15 03:08:28,143 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-15 03:08:28,144 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 03:08:28,144 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 03:08:28,145 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-15 03:08:28,145 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-15 03:08:28,145 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-15 03:08:28,146 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-15 03:08:28,152 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-15 03:08:28,153 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-15 03:08:28,153 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-15 03:08:28,153 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-15 03:08:28,153 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-15 03:08:28,153 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-15 03:08:28,153 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2019-10-15 03:08:28,154 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-15 03:08:28,154 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-15 03:08:28,154 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-15 03:08:28,154 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-15 03:08:28,154 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2019-10-15 03:08:28,154 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-15 03:08:28,155 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-15 03:08:28,155 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-10-15 03:08:28,155 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-15 03:08:28,155 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-15 03:08:28,155 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-15 03:08:28,155 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__twothirdsfull [2019-10-15 03:08:28,156 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__3 [2019-10-15 03:08:28,156 INFO L130 BoogieDeclarations]: Found specification of procedure printState__wrappee__twothirdsfull [2019-10-15 03:08:28,156 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-15 03:08:28,156 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-15 03:08:28,156 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-15 03:08:28,156 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 03:08:28,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 03:08:28,157 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 03:08:35,684 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 03:08:35,685 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-15 03:08:35,686 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:08:35 BoogieIcfgContainer [2019-10-15 03:08:35,687 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 03:08:35,688 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 03:08:35,688 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 03:08:35,691 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 03:08:35,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:08:26" (1/3) ... [2019-10-15 03:08:35,692 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@534520a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:08:35, skipping insertion in model container [2019-10-15 03:08:35,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:08:27" (2/3) ... [2019-10-15 03:08:35,693 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@534520a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:08:35, skipping insertion in model container [2019-10-15 03:08:35,693 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:08:35" (3/3) ... [2019-10-15 03:08:35,695 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product22.cil.c [2019-10-15 03:08:35,706 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 03:08:35,716 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 03:08:35,725 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 03:08:35,756 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 03:08:35,756 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 03:08:35,756 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 03:08:35,756 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 03:08:35,756 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 03:08:35,756 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 03:08:35,757 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 03:08:35,757 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 03:08:35,788 INFO L276 IsEmpty]: Start isEmpty. Operand 582 states. [2019-10-15 03:08:35,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2019-10-15 03:08:35,801 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:08:35,802 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 03:08:35,804 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:08:35,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:08:35,809 INFO L82 PathProgramCache]: Analyzing trace with hash -1540837119, now seen corresponding path program 1 times [2019-10-15 03:08:35,818 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:08:35,818 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142613760] [2019-10-15 03:08:35,819 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:35,819 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:35,819 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:08:36,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:08:36,472 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 03:08:36,474 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142613760] [2019-10-15 03:08:36,474 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:08:36,475 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 03:08:36,475 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30023571] [2019-10-15 03:08:36,484 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 03:08:36,484 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:08:36,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 03:08:36,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 03:08:36,501 INFO L87 Difference]: Start difference. First operand 582 states. Second operand 2 states. [2019-10-15 03:08:36,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:08:36,586 INFO L93 Difference]: Finished difference Result 479 states and 713 transitions. [2019-10-15 03:08:36,586 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 03:08:36,587 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 74 [2019-10-15 03:08:36,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:08:36,629 INFO L225 Difference]: With dead ends: 479 [2019-10-15 03:08:36,630 INFO L226 Difference]: Without dead ends: 445 [2019-10-15 03:08:36,639 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 03:08:36,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2019-10-15 03:08:36,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 445. [2019-10-15 03:08:36,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 445 states. [2019-10-15 03:08:36,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 662 transitions. [2019-10-15 03:08:36,775 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 662 transitions. Word has length 74 [2019-10-15 03:08:36,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:08:36,777 INFO L462 AbstractCegarLoop]: Abstraction has 445 states and 662 transitions. [2019-10-15 03:08:36,777 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 03:08:36,777 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 662 transitions. [2019-10-15 03:08:36,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2019-10-15 03:08:36,782 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:08:36,783 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 03:08:36,783 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:08:36,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:08:36,784 INFO L82 PathProgramCache]: Analyzing trace with hash -1841613749, now seen corresponding path program 1 times [2019-10-15 03:08:36,784 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:08:36,784 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861272642] [2019-10-15 03:08:36,784 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:36,785 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:36,785 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:08:36,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:08:37,157 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 03:08:37,157 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861272642] [2019-10-15 03:08:37,158 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:08:37,158 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-15 03:08:37,158 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391644701] [2019-10-15 03:08:37,160 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-15 03:08:37,161 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:08:37,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-15 03:08:37,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-10-15 03:08:37,161 INFO L87 Difference]: Start difference. First operand 445 states and 662 transitions. Second operand 9 states. [2019-10-15 03:08:46,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:08:46,546 INFO L93 Difference]: Finished difference Result 1218 states and 1852 transitions. [2019-10-15 03:08:46,547 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-10-15 03:08:46,547 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 75 [2019-10-15 03:08:46,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:08:46,572 INFO L225 Difference]: With dead ends: 1218 [2019-10-15 03:08:46,573 INFO L226 Difference]: Without dead ends: 815 [2019-10-15 03:08:46,594 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=93, Invalid=369, Unknown=0, NotChecked=0, Total=462 [2019-10-15 03:08:46,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 815 states. [2019-10-15 03:08:46,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 815 to 784. [2019-10-15 03:08:46,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 784 states. [2019-10-15 03:08:46,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 1153 transitions. [2019-10-15 03:08:46,748 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 1153 transitions. Word has length 75 [2019-10-15 03:08:46,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:08:46,748 INFO L462 AbstractCegarLoop]: Abstraction has 784 states and 1153 transitions. [2019-10-15 03:08:46,748 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-15 03:08:46,749 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 1153 transitions. [2019-10-15 03:08:46,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2019-10-15 03:08:46,752 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:08:46,752 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:08:46,753 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:08:46,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:08:46,753 INFO L82 PathProgramCache]: Analyzing trace with hash 1947632873, now seen corresponding path program 1 times [2019-10-15 03:08:46,753 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:08:46,754 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275288663] [2019-10-15 03:08:46,754 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:46,754 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:46,754 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:08:46,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:08:47,064 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-15 03:08:47,065 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275288663] [2019-10-15 03:08:47,065 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:08:47,065 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 03:08:47,066 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110090456] [2019-10-15 03:08:47,067 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 03:08:47,067 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:08:47,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 03:08:47,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:08:47,068 INFO L87 Difference]: Start difference. First operand 784 states and 1153 transitions. Second operand 5 states. [2019-10-15 03:08:51,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:08:51,179 INFO L93 Difference]: Finished difference Result 2342 states and 3531 transitions. [2019-10-15 03:08:51,180 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 03:08:51,180 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 77 [2019-10-15 03:08:51,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:08:51,195 INFO L225 Difference]: With dead ends: 2342 [2019-10-15 03:08:51,195 INFO L226 Difference]: Without dead ends: 1601 [2019-10-15 03:08:51,200 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-10-15 03:08:51,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1601 states. [2019-10-15 03:08:51,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1601 to 1505. [2019-10-15 03:08:51,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1505 states. [2019-10-15 03:08:51,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1505 states to 1505 states and 2256 transitions. [2019-10-15 03:08:51,309 INFO L78 Accepts]: Start accepts. Automaton has 1505 states and 2256 transitions. Word has length 77 [2019-10-15 03:08:51,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:08:51,310 INFO L462 AbstractCegarLoop]: Abstraction has 1505 states and 2256 transitions. [2019-10-15 03:08:51,310 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 03:08:51,310 INFO L276 IsEmpty]: Start isEmpty. Operand 1505 states and 2256 transitions. [2019-10-15 03:08:51,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2019-10-15 03:08:51,312 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:08:51,312 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] [2019-10-15 03:08:51,313 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:08:51,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:08:51,313 INFO L82 PathProgramCache]: Analyzing trace with hash 1397767893, now seen corresponding path program 1 times [2019-10-15 03:08:51,313 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:08:51,314 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859089808] [2019-10-15 03:08:51,314 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:51,314 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:51,315 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:08:51,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:08:51,482 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 03:08:51,482 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859089808] [2019-10-15 03:08:51,483 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:08:51,483 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 03:08:51,483 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189434869] [2019-10-15 03:08:51,484 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:08:51,484 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:08:51,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:08:51,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 03:08:51,485 INFO L87 Difference]: Start difference. First operand 1505 states and 2256 transitions. Second operand 4 states. [2019-10-15 03:08:54,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:08:54,478 INFO L93 Difference]: Finished difference Result 4434 states and 6753 transitions. [2019-10-15 03:08:54,479 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:08:54,479 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 77 [2019-10-15 03:08:54,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:08:54,504 INFO L225 Difference]: With dead ends: 4434 [2019-10-15 03:08:54,504 INFO L226 Difference]: Without dead ends: 2973 [2019-10-15 03:08:54,513 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:08:54,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2973 states. [2019-10-15 03:08:54,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2973 to 2856. [2019-10-15 03:08:54,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2856 states. [2019-10-15 03:08:54,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2856 states to 2856 states and 4326 transitions. [2019-10-15 03:08:54,686 INFO L78 Accepts]: Start accepts. Automaton has 2856 states and 4326 transitions. Word has length 77 [2019-10-15 03:08:54,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:08:54,687 INFO L462 AbstractCegarLoop]: Abstraction has 2856 states and 4326 transitions. [2019-10-15 03:08:54,687 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 03:08:54,687 INFO L276 IsEmpty]: Start isEmpty. Operand 2856 states and 4326 transitions. [2019-10-15 03:08:54,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2019-10-15 03:08:54,689 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:08:54,689 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] [2019-10-15 03:08:54,690 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:08:54,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:08:54,690 INFO L82 PathProgramCache]: Analyzing trace with hash 379461772, now seen corresponding path program 1 times [2019-10-15 03:08:54,690 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:08:54,691 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911275810] [2019-10-15 03:08:54,691 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:54,691 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:54,691 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:08:54,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:08:54,825 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 03:08:54,826 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911275810] [2019-10-15 03:08:54,826 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:08:54,827 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 03:08:54,827 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384878538] [2019-10-15 03:08:54,827 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:08:54,828 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:08:54,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:08:54,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 03:08:54,828 INFO L87 Difference]: Start difference. First operand 2856 states and 4326 transitions. Second operand 4 states. [2019-10-15 03:08:57,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:08:57,347 INFO L93 Difference]: Finished difference Result 8532 states and 13130 transitions. [2019-10-15 03:08:57,348 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:08:57,348 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 78 [2019-10-15 03:08:57,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:08:57,424 INFO L225 Difference]: With dead ends: 8532 [2019-10-15 03:08:57,424 INFO L226 Difference]: Without dead ends: 5721 [2019-10-15 03:08:57,445 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:08:57,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5721 states. [2019-10-15 03:08:57,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5721 to 5559. [2019-10-15 03:08:57,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5559 states. [2019-10-15 03:08:57,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5559 states to 5559 states and 8504 transitions. [2019-10-15 03:08:57,809 INFO L78 Accepts]: Start accepts. Automaton has 5559 states and 8504 transitions. Word has length 78 [2019-10-15 03:08:57,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:08:57,810 INFO L462 AbstractCegarLoop]: Abstraction has 5559 states and 8504 transitions. [2019-10-15 03:08:57,811 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 03:08:57,811 INFO L276 IsEmpty]: Start isEmpty. Operand 5559 states and 8504 transitions. [2019-10-15 03:08:57,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2019-10-15 03:08:57,814 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:08:57,814 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] [2019-10-15 03:08:57,815 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:08:57,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:08:57,815 INFO L82 PathProgramCache]: Analyzing trace with hash -1123253001, now seen corresponding path program 1 times [2019-10-15 03:08:57,816 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:08:57,816 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846805386] [2019-10-15 03:08:57,816 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:57,820 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:57,820 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:08:57,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:08:57,996 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 03:08:57,996 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846805386] [2019-10-15 03:08:57,997 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:08:57,998 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 03:08:57,998 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670805498] [2019-10-15 03:08:57,998 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:08:57,999 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:08:57,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:08:57,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 03:08:57,999 INFO L87 Difference]: Start difference. First operand 5559 states and 8504 transitions. Second operand 4 states. [2019-10-15 03:09:00,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:09:00,712 INFO L93 Difference]: Finished difference Result 16743 states and 26151 transitions. [2019-10-15 03:09:00,719 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:09:00,720 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 79 [2019-10-15 03:09:00,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:09:00,804 INFO L225 Difference]: With dead ends: 16743 [2019-10-15 03:09:00,804 INFO L226 Difference]: Without dead ends: 11229 [2019-10-15 03:09:00,837 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:09:00,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11229 states. [2019-10-15 03:09:01,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11229 to 10978. [2019-10-15 03:09:01,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10978 states. [2019-10-15 03:09:01,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10978 states to 10978 states and 17018 transitions. [2019-10-15 03:09:01,536 INFO L78 Accepts]: Start accepts. Automaton has 10978 states and 17018 transitions. Word has length 79 [2019-10-15 03:09:01,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:09:01,537 INFO L462 AbstractCegarLoop]: Abstraction has 10978 states and 17018 transitions. [2019-10-15 03:09:01,537 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 03:09:01,537 INFO L276 IsEmpty]: Start isEmpty. Operand 10978 states and 17018 transitions. [2019-10-15 03:09:01,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2019-10-15 03:09:01,545 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:09:01,545 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] [2019-10-15 03:09:01,546 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:09:01,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:09:01,546 INFO L82 PathProgramCache]: Analyzing trace with hash -462766802, now seen corresponding path program 1 times [2019-10-15 03:09:01,546 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:09:01,547 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674387631] [2019-10-15 03:09:01,547 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:01,547 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:01,547 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:09:01,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:01,714 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 03:09:01,714 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674387631] [2019-10-15 03:09:01,714 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:09:01,715 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 03:09:01,715 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11816391] [2019-10-15 03:09:01,716 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:09:01,716 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:09:01,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:09:01,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 03:09:01,717 INFO L87 Difference]: Start difference. First operand 10978 states and 17018 transitions. Second operand 4 states.