/usr/bin/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_product24.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 04:10:35,832 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 04:10:35,834 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 04:10:35,846 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 04:10:35,847 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 04:10:35,848 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 04:10:35,849 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 04:10:35,851 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 04:10:35,853 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 04:10:35,854 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 04:10:35,855 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 04:10:35,856 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 04:10:35,857 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 04:10:35,858 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 04:10:35,859 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 04:10:35,860 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 04:10:35,861 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 04:10:35,861 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 04:10:35,863 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 04:10:35,865 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 04:10:35,867 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 04:10:35,868 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 04:10:35,869 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 04:10:35,870 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 04:10:35,872 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 04:10:35,873 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 04:10:35,873 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 04:10:35,874 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 04:10:35,874 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 04:10:35,875 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 04:10:35,876 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 04:10:35,876 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 04:10:35,877 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 04:10:35,878 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 04:10:35,879 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 04:10:35,880 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 04:10:35,880 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 04:10:35,880 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 04:10:35,881 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 04:10:35,882 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 04:10:35,882 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 04:10:35,883 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 [2019-11-07 04:10:35,907 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 04:10:35,907 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 04:10:35,908 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 04:10:35,909 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 04:10:35,909 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 04:10:35,909 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 04:10:35,909 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 04:10:35,909 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 04:10:35,910 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 04:10:35,910 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 04:10:35,910 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 04:10:35,910 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 04:10:35,910 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 04:10:35,911 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 04:10:35,911 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 04:10:35,911 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 04:10:35,911 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 04:10:35,911 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 04:10:35,911 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 04:10:35,912 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 04:10:35,912 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 04:10:35,912 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 04:10:35,912 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 04:10:35,913 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 04:10:35,913 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 04:10:35,913 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 04:10:35,913 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 04:10:35,913 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 04:10:35,914 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 [2019-11-07 04:10:36,177 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 04:10:36,194 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 04:10:36,198 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 04:10:36,200 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 04:10:36,200 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 04:10:36,201 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec2_product24.cil.c [2019-11-07 04:10:36,280 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5359e53c/4a2fcbf67026478e91d1afe11db4ee8d/FLAG57fb1bf5f [2019-11-07 04:10:36,980 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 04:10:36,981 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec2_product24.cil.c [2019-11-07 04:10:37,015 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5359e53c/4a2fcbf67026478e91d1afe11db4ee8d/FLAG57fb1bf5f [2019-11-07 04:10:37,145 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5359e53c/4a2fcbf67026478e91d1afe11db4ee8d [2019-11-07 04:10:37,155 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 04:10:37,157 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 04:10:37,158 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 04:10:37,158 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 04:10:37,162 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 04:10:37,163 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:10:37" (1/1) ... [2019-11-07 04:10:37,165 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11713e81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:10:37, skipping insertion in model container [2019-11-07 04:10:37,166 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:10:37" (1/1) ... [2019-11-07 04:10:37,174 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 04:10:37,264 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 04:10:38,031 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:10:38,056 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 04:10:38,202 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:10:38,273 INFO L192 MainTranslator]: Completed translation [2019-11-07 04:10:38,273 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:10:38 WrapperNode [2019-11-07 04:10:38,273 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 04:10:38,274 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 04:10:38,274 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 04:10:38,274 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 04:10:38,289 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:10:38" (1/1) ... [2019-11-07 04:10:38,290 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:10:38" (1/1) ... [2019-11-07 04:10:38,322 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:10:38" (1/1) ... [2019-11-07 04:10:38,322 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:10:38" (1/1) ... [2019-11-07 04:10:38,418 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:10:38" (1/1) ... [2019-11-07 04:10:38,470 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:10:38" (1/1) ... [2019-11-07 04:10:38,489 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:10:38" (1/1) ... [2019-11-07 04:10:38,520 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 04:10:38,521 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 04:10:38,521 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 04:10:38,522 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 04:10:38,523 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:10:38" (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 [2019-11-07 04:10:38,589 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 04:10:38,590 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 04:10:38,590 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-07 04:10:38,590 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-11-07 04:10:38,591 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-11-07 04:10:38,592 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-11-07 04:10:38,592 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-11-07 04:10:38,593 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-11-07 04:10:38,593 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-11-07 04:10:38,593 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-11-07 04:10:38,594 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-11-07 04:10:38,595 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-11-07 04:10:38,595 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-11-07 04:10:38,595 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-11-07 04:10:38,595 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-11-07 04:10:38,595 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-11-07 04:10:38,598 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-11-07 04:10:38,598 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-11-07 04:10:38,598 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-11-07 04:10:38,599 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-11-07 04:10:38,599 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-11-07 04:10:38,599 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-11-07 04:10:38,599 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-11-07 04:10:38,600 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-11-07 04:10:38,600 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-11-07 04:10:38,600 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-11-07 04:10:38,600 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-11-07 04:10:38,600 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2019-11-07 04:10:38,600 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__twothirdsfull [2019-11-07 04:10:38,601 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-11-07 04:10:38,601 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-11-07 04:10:38,601 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-11-07 04:10:38,601 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-11-07 04:10:38,601 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2019-11-07 04:10:38,602 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-11-07 04:10:38,602 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-11-07 04:10:38,602 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-11-07 04:10:38,602 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2019-11-07 04:10:38,602 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-11-07 04:10:38,602 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__wrappee__executivefloor [2019-11-07 04:10:38,603 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-11-07 04:10:38,603 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-11-07 04:10:38,603 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-11-07 04:10:38,603 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-11-07 04:10:38,603 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2019-11-07 04:10:38,604 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2019-11-07 04:10:38,604 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__3 [2019-11-07 04:10:38,604 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__4 [2019-11-07 04:10:38,604 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-11-07 04:10:38,604 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-11-07 04:10:38,604 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-11-07 04:10:38,605 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-11-07 04:10:38,605 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-11-07 04:10:38,605 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-11-07 04:10:38,605 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-11-07 04:10:38,605 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-11-07 04:10:38,605 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-11-07 04:10:38,606 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-11-07 04:10:38,606 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-11-07 04:10:38,606 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-11-07 04:10:38,606 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-11-07 04:10:38,606 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-11-07 04:10:38,606 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-07 04:10:38,607 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-11-07 04:10:38,607 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 04:10:38,607 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-11-07 04:10:38,607 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-11-07 04:10:38,607 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-11-07 04:10:38,608 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-07 04:10:38,608 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-07 04:10:38,608 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-07 04:10:38,608 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-07 04:10:38,608 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-07 04:10:38,608 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-07 04:10:38,609 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-11-07 04:10:38,609 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-11-07 04:10:38,609 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-07 04:10:38,609 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-07 04:10:38,609 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-07 04:10:38,610 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-07 04:10:38,610 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-07 04:10:38,610 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-07 04:10:38,610 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 04:10:38,610 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 04:10:38,611 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-11-07 04:10:38,611 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-11-07 04:10:38,611 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-11-07 04:10:38,611 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-11-07 04:10:38,611 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-11-07 04:10:38,612 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-11-07 04:10:38,612 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-11-07 04:10:38,612 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-11-07 04:10:38,612 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-07 04:10:38,612 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-11-07 04:10:38,612 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-11-07 04:10:38,613 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-11-07 04:10:38,613 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-11-07 04:10:38,613 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-11-07 04:10:38,613 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-11-07 04:10:38,613 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-11-07 04:10:38,613 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-11-07 04:10:38,613 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-11-07 04:10:38,614 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-11-07 04:10:38,614 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-11-07 04:10:38,614 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-11-07 04:10:38,614 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-11-07 04:10:38,614 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-11-07 04:10:38,614 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-11-07 04:10:38,614 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-11-07 04:10:38,615 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-11-07 04:10:38,615 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-11-07 04:10:38,615 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-11-07 04:10:38,615 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2019-11-07 04:10:38,615 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-11-07 04:10:38,615 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-11-07 04:10:38,615 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-11-07 04:10:38,616 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-11-07 04:10:38,616 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2019-11-07 04:10:38,616 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__twothirdsfull [2019-11-07 04:10:38,616 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-11-07 04:10:38,616 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-11-07 04:10:38,616 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-11-07 04:10:38,617 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2019-11-07 04:10:38,617 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-11-07 04:10:38,617 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-11-07 04:10:38,617 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-11-07 04:10:38,617 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2019-11-07 04:10:38,617 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__3 [2019-11-07 04:10:38,617 INFO L130 BoogieDeclarations]: Found specification of procedure printState__wrappee__executivefloor [2019-11-07 04:10:38,618 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 04:10:38,618 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-11-07 04:10:38,618 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-07 04:10:38,618 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2019-11-07 04:10:38,618 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__4 [2019-11-07 04:10:38,618 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-07 04:10:38,619 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-11-07 04:10:38,619 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-11-07 04:10:38,619 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-11-07 04:10:38,619 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-11-07 04:10:38,619 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-11-07 04:10:38,619 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-11-07 04:10:38,620 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-11-07 04:10:38,620 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-11-07 04:10:38,620 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-11-07 04:10:38,620 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-11-07 04:10:38,620 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-11-07 04:10:38,620 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-11-07 04:10:38,620 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-11-07 04:10:38,621 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-11-07 04:10:38,621 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-11-07 04:10:38,621 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-07 04:10:38,621 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-07 04:10:38,621 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-11-07 04:10:38,621 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-07 04:10:38,621 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-07 04:10:38,622 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-07 04:10:38,622 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 04:10:38,622 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-07 04:10:38,622 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-11-07 04:10:38,622 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-11-07 04:10:38,622 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-07 04:10:38,622 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 04:10:38,623 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 04:10:38,623 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-07 04:10:38,623 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 04:10:38,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 04:10:38,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 04:10:38,623 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 04:10:38,623 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-07 04:10:38,623 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 04:10:38,624 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-07 04:10:38,624 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-07 04:10:38,624 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 04:10:38,624 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-07 04:10:38,624 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-07 04:10:38,624 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-07 04:10:38,624 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 04:10:38,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 04:10:38,625 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 04:10:43,531 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 04:10:43,531 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-11-07 04:10:43,533 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:10:43 BoogieIcfgContainer [2019-11-07 04:10:43,533 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 04:10:43,534 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 04:10:43,534 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 04:10:43,538 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 04:10:43,538 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:10:37" (1/3) ... [2019-11-07 04:10:43,539 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f714fbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:10:43, skipping insertion in model container [2019-11-07 04:10:43,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:10:38" (2/3) ... [2019-11-07 04:10:43,540 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f714fbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:10:43, skipping insertion in model container [2019-11-07 04:10:43,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:10:43" (3/3) ... [2019-11-07 04:10:43,542 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product24.cil.c [2019-11-07 04:10:43,552 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 04:10:43,564 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 04:10:43,576 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 04:10:43,620 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 04:10:43,620 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 04:10:43,620 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 04:10:43,620 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 04:10:43,620 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 04:10:43,620 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 04:10:43,621 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 04:10:43,621 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 04:10:43,656 INFO L276 IsEmpty]: Start isEmpty. Operand 609 states. [2019-11-07 04:10:43,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2019-11-07 04:10:43,669 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:10:43,670 INFO L410 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] [2019-11-07 04:10:43,671 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:10:43,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:10:43,676 INFO L82 PathProgramCache]: Analyzing trace with hash 1997168965, now seen corresponding path program 1 times [2019-11-07 04:10:43,685 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:10:43,686 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929900106] [2019-11-07 04:10:43,686 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:10:44,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:10:44,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:10:44,269 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929900106] [2019-11-07 04:10:44,271 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:10:44,271 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-07 04:10:44,272 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821087681] [2019-11-07 04:10:44,281 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-07 04:10:44,281 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:10:44,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-07 04:10:44,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 04:10:44,299 INFO L87 Difference]: Start difference. First operand 609 states. Second operand 2 states. [2019-11-07 04:10:44,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:10:44,396 INFO L93 Difference]: Finished difference Result 506 states and 748 transitions. [2019-11-07 04:10:44,396 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-07 04:10:44,397 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 74 [2019-11-07 04:10:44,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:10:44,423 INFO L225 Difference]: With dead ends: 506 [2019-11-07 04:10:44,423 INFO L226 Difference]: Without dead ends: 472 [2019-11-07 04:10:44,433 INFO L630 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 [2019-11-07 04:10:44,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2019-11-07 04:10:44,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 472. [2019-11-07 04:10:44,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 472 states. [2019-11-07 04:10:44,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 697 transitions. [2019-11-07 04:10:44,580 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 697 transitions. Word has length 74 [2019-11-07 04:10:44,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:10:44,583 INFO L462 AbstractCegarLoop]: Abstraction has 472 states and 697 transitions. [2019-11-07 04:10:44,583 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-07 04:10:44,583 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 697 transitions. [2019-11-07 04:10:44,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2019-11-07 04:10:44,595 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:10:44,595 INFO L410 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] [2019-11-07 04:10:44,596 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:10:44,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:10:44,596 INFO L82 PathProgramCache]: Analyzing trace with hash -1180328150, now seen corresponding path program 1 times [2019-11-07 04:10:44,596 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:10:44,596 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290975476] [2019-11-07 04:10:44,597 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:10:44,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:10:45,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:10:45,060 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290975476] [2019-11-07 04:10:45,060 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:10:45,060 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-11-07 04:10:45,061 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809629858] [2019-11-07 04:10:45,063 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-07 04:10:45,063 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:10:45,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-07 04:10:45,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-11-07 04:10:45,064 INFO L87 Difference]: Start difference. First operand 472 states and 697 transitions. Second operand 9 states. [2019-11-07 04:10:50,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:10:50,994 INFO L93 Difference]: Finished difference Result 1299 states and 1959 transitions. [2019-11-07 04:10:50,998 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-11-07 04:10:50,999 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 75 [2019-11-07 04:10:50,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:10:51,012 INFO L225 Difference]: With dead ends: 1299 [2019-11-07 04:10:51,012 INFO L226 Difference]: Without dead ends: 869 [2019-11-07 04:10:51,024 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=93, Invalid=369, Unknown=0, NotChecked=0, Total=462 [2019-11-07 04:10:51,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 869 states. [2019-11-07 04:10:51,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 869 to 838. [2019-11-07 04:10:51,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 838 states. [2019-11-07 04:10:51,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 838 states to 838 states and 1223 transitions. [2019-11-07 04:10:51,142 INFO L78 Accepts]: Start accepts. Automaton has 838 states and 1223 transitions. Word has length 75 [2019-11-07 04:10:51,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:10:51,144 INFO L462 AbstractCegarLoop]: Abstraction has 838 states and 1223 transitions. [2019-11-07 04:10:51,144 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-07 04:10:51,144 INFO L276 IsEmpty]: Start isEmpty. Operand 838 states and 1223 transitions. [2019-11-07 04:10:51,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2019-11-07 04:10:51,146 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:10:51,146 INFO L410 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] [2019-11-07 04:10:51,147 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:10:51,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:10:51,147 INFO L82 PathProgramCache]: Analyzing trace with hash -2133961468, now seen corresponding path program 1 times [2019-11-07 04:10:51,147 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:10:51,148 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611163823] [2019-11-07 04:10:51,148 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:10:51,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:10:51,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:10:51,391 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611163823] [2019-11-07 04:10:51,392 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:10:51,392 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 04:10:51,393 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493536037] [2019-11-07 04:10:51,394 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 04:10:51,394 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:10:51,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 04:10:51,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-07 04:10:51,395 INFO L87 Difference]: Start difference. First operand 838 states and 1223 transitions. Second operand 5 states. [2019-11-07 04:10:53,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:10:53,433 INFO L93 Difference]: Finished difference Result 2500 states and 3738 transitions. [2019-11-07 04:10:53,433 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 04:10:53,433 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 76 [2019-11-07 04:10:53,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:10:53,448 INFO L225 Difference]: With dead ends: 2500 [2019-11-07 04:10:53,449 INFO L226 Difference]: Without dead ends: 1705 [2019-11-07 04:10:53,454 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2019-11-07 04:10:53,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1705 states. [2019-11-07 04:10:53,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1705 to 1609. [2019-11-07 04:10:53,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1609 states. [2019-11-07 04:10:53,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1609 states to 1609 states and 2393 transitions. [2019-11-07 04:10:53,559 INFO L78 Accepts]: Start accepts. Automaton has 1609 states and 2393 transitions. Word has length 76 [2019-11-07 04:10:53,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:10:53,560 INFO L462 AbstractCegarLoop]: Abstraction has 1609 states and 2393 transitions. [2019-11-07 04:10:53,560 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 04:10:53,560 INFO L276 IsEmpty]: Start isEmpty. Operand 1609 states and 2393 transitions. [2019-11-07 04:10:53,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2019-11-07 04:10:53,562 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:10:53,562 INFO L410 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] [2019-11-07 04:10:53,562 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:10:53,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:10:53,563 INFO L82 PathProgramCache]: Analyzing trace with hash -1730138264, now seen corresponding path program 1 times [2019-11-07 04:10:53,563 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:10:53,563 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417204240] [2019-11-07 04:10:53,564 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:10:53,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:10:53,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:10:53,706 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417204240] [2019-11-07 04:10:53,707 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:10:53,707 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 04:10:53,707 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489589117] [2019-11-07 04:10:53,708 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 04:10:53,708 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:10:53,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 04:10:53,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 04:10:53,709 INFO L87 Difference]: Start difference. First operand 1609 states and 2393 transitions. Second operand 4 states. [2019-11-07 04:10:55,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:10:55,768 INFO L93 Difference]: Finished difference Result 4746 states and 7163 transitions. [2019-11-07 04:10:55,769 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 04:10:55,769 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 77 [2019-11-07 04:10:55,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:10:55,796 INFO L225 Difference]: With dead ends: 4746 [2019-11-07 04:10:55,797 INFO L226 Difference]: Without dead ends: 3181 [2019-11-07 04:10:55,807 INFO L630 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 [2019-11-07 04:10:55,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3181 states. [2019-11-07 04:10:55,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3181 to 3064. [2019-11-07 04:10:55,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3064 states. [2019-11-07 04:10:56,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3064 states to 3064 states and 4600 transitions. [2019-11-07 04:10:56,019 INFO L78 Accepts]: Start accepts. Automaton has 3064 states and 4600 transitions. Word has length 77 [2019-11-07 04:10:56,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:10:56,023 INFO L462 AbstractCegarLoop]: Abstraction has 3064 states and 4600 transitions. [2019-11-07 04:10:56,023 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 04:10:56,023 INFO L276 IsEmpty]: Start isEmpty. Operand 3064 states and 4600 transitions. [2019-11-07 04:10:56,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2019-11-07 04:10:56,026 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:10:56,027 INFO L410 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] [2019-11-07 04:10:56,027 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:10:56,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:10:56,027 INFO L82 PathProgramCache]: Analyzing trace with hash -2096516922, now seen corresponding path program 1 times [2019-11-07 04:10:56,028 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:10:56,028 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489304726] [2019-11-07 04:10:56,028 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:10:56,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:10:56,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:10:56,233 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489304726] [2019-11-07 04:10:56,234 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:10:56,234 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 04:10:56,234 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903853088] [2019-11-07 04:10:56,235 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 04:10:56,235 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:10:56,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 04:10:56,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 04:10:56,236 INFO L87 Difference]: Start difference. First operand 3064 states and 4600 transitions. Second operand 4 states. [2019-11-07 04:10:58,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:10:58,265 INFO L93 Difference]: Finished difference Result 9156 states and 13950 transitions. [2019-11-07 04:10:58,266 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 04:10:58,266 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 78 [2019-11-07 04:10:58,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:10:58,323 INFO L225 Difference]: With dead ends: 9156 [2019-11-07 04:10:58,323 INFO L226 Difference]: Without dead ends: 6137 [2019-11-07 04:10:58,423 INFO L630 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 [2019-11-07 04:10:58,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6137 states. [2019-11-07 04:10:58,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6137 to 5975. [2019-11-07 04:10:58,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5975 states. [2019-11-07 04:10:58,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5975 states to 5975 states and 9052 transitions. [2019-11-07 04:10:58,749 INFO L78 Accepts]: Start accepts. Automaton has 5975 states and 9052 transitions. Word has length 78 [2019-11-07 04:10:58,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:10:58,750 INFO L462 AbstractCegarLoop]: Abstraction has 5975 states and 9052 transitions. [2019-11-07 04:10:58,750 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 04:10:58,750 INFO L276 IsEmpty]: Start isEmpty. Operand 5975 states and 9052 transitions. [2019-11-07 04:10:58,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2019-11-07 04:10:58,751 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:10:58,752 INFO L410 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] [2019-11-07 04:10:58,752 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:10:58,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:10:58,752 INFO L82 PathProgramCache]: Analyzing trace with hash -569349526, now seen corresponding path program 1 times [2019-11-07 04:10:58,753 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:10:58,753 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225254227] [2019-11-07 04:10:58,753 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:10:58,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:10:58,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:10:58,880 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225254227] [2019-11-07 04:10:58,880 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:10:58,880 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 04:10:58,881 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91338205] [2019-11-07 04:10:58,881 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 04:10:58,881 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:10:58,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 04:10:58,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 04:10:58,882 INFO L87 Difference]: Start difference. First operand 5975 states and 9052 transitions. Second operand 4 states. [2019-11-07 04:11:01,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:11:01,121 INFO L93 Difference]: Finished difference Result 17991 states and 27791 transitions. [2019-11-07 04:11:01,121 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 04:11:01,122 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 79 [2019-11-07 04:11:01,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:11:01,234 INFO L225 Difference]: With dead ends: 17991 [2019-11-07 04:11:01,235 INFO L226 Difference]: Without dead ends: 12061 [2019-11-07 04:11:01,271 INFO L630 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 [2019-11-07 04:11:01,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12061 states. [2019-11-07 04:11:02,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12061 to 11810. [2019-11-07 04:11:02,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11810 states. [2019-11-07 04:11:02,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11810 states to 11810 states and 18114 transitions. [2019-11-07 04:11:02,724 INFO L78 Accepts]: Start accepts. Automaton has 11810 states and 18114 transitions. Word has length 79 [2019-11-07 04:11:02,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:11:02,725 INFO L462 AbstractCegarLoop]: Abstraction has 11810 states and 18114 transitions. [2019-11-07 04:11:02,725 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 04:11:02,725 INFO L276 IsEmpty]: Start isEmpty. Operand 11810 states and 18114 transitions. [2019-11-07 04:11:02,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2019-11-07 04:11:02,729 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:11:02,729 INFO L410 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] [2019-11-07 04:11:02,729 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:11:02,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:11:02,730 INFO L82 PathProgramCache]: Analyzing trace with hash -471796600, now seen corresponding path program 1 times [2019-11-07 04:11:02,730 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:11:02,730 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541048851] [2019-11-07 04:11:02,730 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:11:02,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:11:02,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:11:02,878 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541048851] [2019-11-07 04:11:02,879 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:11:02,879 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 04:11:02,879 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121105425] [2019-11-07 04:11:02,879 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 04:11:02,880 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:11:02,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 04:11:02,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 04:11:02,880 INFO L87 Difference]: Start difference. First operand 11810 states and 18114 transitions. Second operand 4 states. [2019-11-07 04:11:05,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:11:05,730 INFO L93 Difference]: Finished difference Result 35714 states and 56419 transitions. [2019-11-07 04:11:05,731 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 04:11:05,731 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 80 [2019-11-07 04:11:05,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:11:05,955 INFO L225 Difference]: With dead ends: 35714 [2019-11-07 04:11:05,956 INFO L226 Difference]: Without dead ends: 23937 [2019-11-07 04:11:06,044 INFO L630 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 [2019-11-07 04:11:06,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23937 states.