/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_product30.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 04:11:06,576 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 04:11:06,578 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 04:11:06,592 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 04:11:06,592 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 04:11:06,595 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 04:11:06,596 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 04:11:06,598 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 04:11:06,600 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 04:11:06,601 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 04:11:06,602 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 04:11:06,603 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 04:11:06,603 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 04:11:06,604 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 04:11:06,605 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 04:11:06,607 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 04:11:06,607 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 04:11:06,608 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 04:11:06,610 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 04:11:06,612 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 04:11:06,614 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 04:11:06,616 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 04:11:06,620 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 04:11:06,621 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 04:11:06,624 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 04:11:06,624 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 04:11:06,624 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 04:11:06,629 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 04:11:06,632 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 04:11:06,635 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 04:11:06,635 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 04:11:06,636 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 04:11:06,637 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 04:11:06,638 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 04:11:06,640 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 04:11:06,641 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 04:11:06,644 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 04:11:06,644 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 04:11:06,644 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 04:11:06,645 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 04:11:06,649 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 04:11:06,650 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 04:11:06,665 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 04:11:06,665 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 04:11:06,666 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 04:11:06,666 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 04:11:06,667 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 04:11:06,667 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 04:11:06,667 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 04:11:06,667 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 04:11:06,667 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 04:11:06,668 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 04:11:06,668 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 04:11:06,668 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 04:11:06,668 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 04:11:06,668 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 04:11:06,669 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 04:11:06,669 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 04:11:06,669 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 04:11:06,669 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 04:11:06,669 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 04:11:06,670 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 04:11:06,670 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 04:11:06,670 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 04:11:06,670 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 04:11:06,670 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 04:11:06,671 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 04:11:06,671 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 04:11:06,671 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 04:11:06,671 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 04:11:06,671 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 04:11:06,993 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 04:11:07,006 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 04:11:07,010 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 04:11:07,012 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 04:11:07,012 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 04:11:07,013 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec2_product30.cil.c [2019-11-07 04:11:07,090 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2fcfc1c3a/8a5e0b64e4bc4b70a3c1564fdd940cf9/FLAG10fe57b34 [2019-11-07 04:11:07,722 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 04:11:07,722 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec2_product30.cil.c [2019-11-07 04:11:07,753 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2fcfc1c3a/8a5e0b64e4bc4b70a3c1564fdd940cf9/FLAG10fe57b34 [2019-11-07 04:11:07,935 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2fcfc1c3a/8a5e0b64e4bc4b70a3c1564fdd940cf9 [2019-11-07 04:11:07,947 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 04:11:07,949 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 04:11:07,960 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 04:11:07,961 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 04:11:07,970 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 04:11:07,971 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:11:07" (1/1) ... [2019-11-07 04:11:07,975 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c419196 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:11:07, skipping insertion in model container [2019-11-07 04:11:07,975 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:11:07" (1/1) ... [2019-11-07 04:11:07,985 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 04:11:08,073 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 04:11:08,826 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:11:08,855 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 04:11:09,000 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:11:09,098 INFO L192 MainTranslator]: Completed translation [2019-11-07 04:11:09,098 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:11:09 WrapperNode [2019-11-07 04:11:09,099 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 04:11:09,100 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 04:11:09,100 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 04:11:09,100 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 04:11:09,120 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:11:09" (1/1) ... [2019-11-07 04:11:09,121 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:11:09" (1/1) ... [2019-11-07 04:11:09,193 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:11:09" (1/1) ... [2019-11-07 04:11:09,199 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:11:09" (1/1) ... [2019-11-07 04:11:09,278 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:11:09" (1/1) ... [2019-11-07 04:11:09,314 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:11:09" (1/1) ... [2019-11-07 04:11:09,323 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:11:09" (1/1) ... [2019-11-07 04:11:09,346 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 04:11:09,350 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 04:11:09,351 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 04:11:09,351 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 04:11:09,352 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:11:09" (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 04:11:09,417 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 04:11:09,418 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 04:11:09,418 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-07 04:11:09,418 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-11-07 04:11:09,418 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-11-07 04:11:09,419 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-11-07 04:11:09,419 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-11-07 04:11:09,419 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-11-07 04:11:09,419 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-11-07 04:11:09,420 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-11-07 04:11:09,420 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-11-07 04:11:09,420 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-11-07 04:11:09,420 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-11-07 04:11:09,420 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-11-07 04:11:09,421 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-11-07 04:11:09,421 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-11-07 04:11:09,421 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-11-07 04:11:09,421 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-11-07 04:11:09,422 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-11-07 04:11:09,423 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-11-07 04:11:09,423 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-07 04:11:09,423 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-11-07 04:11:09,424 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 04:11:09,424 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-11-07 04:11:09,424 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-11-07 04:11:09,424 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-07 04:11:09,424 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-11-07 04:11:09,425 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-11-07 04:11:09,425 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-11-07 04:11:09,425 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-11-07 04:11:09,425 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-11-07 04:11:09,427 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-11-07 04:11:09,427 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-11-07 04:11:09,427 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-11-07 04:11:09,427 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-07 04:11:09,428 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-07 04:11:09,428 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-07 04:11:09,428 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-07 04:11:09,428 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-07 04:11:09,428 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2019-11-07 04:11:09,429 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2019-11-07 04:11:09,429 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__3 [2019-11-07 04:11:09,429 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__4 [2019-11-07 04:11:09,429 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-11-07 04:11:09,429 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-11-07 04:11:09,429 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-11-07 04:11:09,430 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-11-07 04:11:09,430 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-11-07 04:11:09,430 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-11-07 04:11:09,430 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__weight [2019-11-07 04:11:09,430 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-11-07 04:11:09,431 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-11-07 04:11:09,431 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-11-07 04:11:09,431 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-11-07 04:11:09,431 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-11-07 04:11:09,431 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-11-07 04:11:09,431 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-11-07 04:11:09,432 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-11-07 04:11:09,432 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-11-07 04:11:09,432 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-11-07 04:11:09,432 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2019-11-07 04:11:09,433 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-11-07 04:11:09,433 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-11-07 04:11:09,433 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-11-07 04:11:09,433 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-11-07 04:11:09,433 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-11-07 04:11:09,433 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-11-07 04:11:09,434 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-11-07 04:11:09,434 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__twothirdsfull [2019-11-07 04:11:09,434 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-11-07 04:11:09,434 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__wrappee__twothirdsfull [2019-11-07 04:11:09,434 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-11-07 04:11:09,435 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-11-07 04:11:09,435 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-07 04:11:09,435 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-07 04:11:09,435 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-07 04:11:09,435 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-07 04:11:09,436 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-07 04:11:09,436 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-07 04:11:09,436 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 04:11:09,436 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 04:11:09,436 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-11-07 04:11:09,437 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-11-07 04:11:09,437 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-11-07 04:11:09,437 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-07 04:11:09,437 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-11-07 04:11:09,437 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-11-07 04:11:09,438 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-11-07 04:11:09,438 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-11-07 04:11:09,438 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-11-07 04:11:09,438 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-11-07 04:11:09,438 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-11-07 04:11:09,438 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-11-07 04:11:09,439 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-11-07 04:11:09,439 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-11-07 04:11:09,439 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-11-07 04:11:09,439 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-11-07 04:11:09,439 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-11-07 04:11:09,439 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-11-07 04:11:09,440 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-11-07 04:11:09,440 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-11-07 04:11:09,440 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-11-07 04:11:09,440 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-11-07 04:11:09,440 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-11-07 04:11:09,440 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-11-07 04:11:09,441 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-07 04:11:09,441 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2019-11-07 04:11:09,441 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__4 [2019-11-07 04:11:09,441 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-07 04:11:09,441 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-11-07 04:11:09,442 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-07 04:11:09,442 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-07 04:11:09,442 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-07 04:11:09,442 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 04:11:09,442 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-11-07 04:11:09,442 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-11-07 04:11:09,443 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-11-07 04:11:09,443 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-07 04:11:09,443 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-11-07 04:11:09,443 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-11-07 04:11:09,443 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-11-07 04:11:09,444 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-11-07 04:11:09,444 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-11-07 04:11:09,444 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-11-07 04:11:09,444 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-11-07 04:11:09,444 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-07 04:11:09,445 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-11-07 04:11:09,445 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-11-07 04:11:09,445 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2019-11-07 04:11:09,445 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__3 [2019-11-07 04:11:09,445 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-07 04:11:09,445 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-11-07 04:11:09,445 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-11-07 04:11:09,446 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-11-07 04:11:09,446 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-11-07 04:11:09,446 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-11-07 04:11:09,446 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-11-07 04:11:09,446 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__weight [2019-11-07 04:11:09,446 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-11-07 04:11:09,447 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-11-07 04:11:09,447 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-11-07 04:11:09,447 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-11-07 04:11:09,447 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-11-07 04:11:09,447 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2019-11-07 04:11:09,447 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-11-07 04:11:09,448 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-11-07 04:11:09,448 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-11-07 04:11:09,448 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-11-07 04:11:09,448 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-11-07 04:11:09,448 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-11-07 04:11:09,448 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__twothirdsfull [2019-11-07 04:11:09,448 INFO L130 BoogieDeclarations]: Found specification of procedure printState__wrappee__twothirdsfull [2019-11-07 04:11:09,449 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 04:11:09,449 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-11-07 04:11:09,449 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-07 04:11:09,449 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 04:11:09,449 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 04:11:09,449 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-07 04:11:09,450 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 04:11:09,450 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 04:11:09,450 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 04:11:09,450 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 04:11:09,450 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-07 04:11:09,450 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 04:11:09,450 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-07 04:11:09,450 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-07 04:11:09,451 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 04:11:09,451 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-07 04:11:09,451 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-07 04:11:09,451 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-07 04:11:09,451 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 04:11:09,451 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 04:11:09,451 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 04:11:14,708 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 04:11:14,708 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-11-07 04:11:14,710 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:11:14 BoogieIcfgContainer [2019-11-07 04:11:14,710 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 04:11:14,711 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 04:11:14,711 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 04:11:14,715 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 04:11:14,715 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:11:07" (1/3) ... [2019-11-07 04:11:14,716 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b3b0d6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:11:14, skipping insertion in model container [2019-11-07 04:11:14,716 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:11:09" (2/3) ... [2019-11-07 04:11:14,716 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b3b0d6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:11:14, skipping insertion in model container [2019-11-07 04:11:14,716 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:11:14" (3/3) ... [2019-11-07 04:11:14,718 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product30.cil.c [2019-11-07 04:11:14,728 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 04:11:14,738 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 04:11:14,750 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 04:11:14,781 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 04:11:14,782 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 04:11:14,782 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 04:11:14,782 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 04:11:14,782 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 04:11:14,782 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 04:11:14,782 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 04:11:14,782 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 04:11:14,820 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states. [2019-11-07 04:11:14,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2019-11-07 04:11:14,845 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:11:14,846 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 04:11:14,848 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:11:14,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:11:14,855 INFO L82 PathProgramCache]: Analyzing trace with hash -1476435003, now seen corresponding path program 1 times [2019-11-07 04:11:14,863 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:11:14,863 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30699015] [2019-11-07 04:11:14,864 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:11:15,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:11:15,447 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 04:11:15,448 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30699015] [2019-11-07 04:11:15,449 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:11:15,449 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-07 04:11:15,450 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057721856] [2019-11-07 04:11:15,456 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-07 04:11:15,456 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:11:15,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-07 04:11:15,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 04:11:15,477 INFO L87 Difference]: Start difference. First operand 589 states. Second operand 2 states. [2019-11-07 04:11:15,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:11:15,568 INFO L93 Difference]: Finished difference Result 486 states and 720 transitions. [2019-11-07 04:11:15,569 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-07 04:11:15,571 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 74 [2019-11-07 04:11:15,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:11:15,606 INFO L225 Difference]: With dead ends: 486 [2019-11-07 04:11:15,607 INFO L226 Difference]: Without dead ends: 452 [2019-11-07 04:11:15,613 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 04:11:15,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2019-11-07 04:11:15,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 452. [2019-11-07 04:11:15,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 452 states. [2019-11-07 04:11:15,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 669 transitions. [2019-11-07 04:11:15,760 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 669 transitions. Word has length 74 [2019-11-07 04:11:15,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:11:15,763 INFO L462 AbstractCegarLoop]: Abstraction has 452 states and 669 transitions. [2019-11-07 04:11:15,763 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-07 04:11:15,764 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 669 transitions. [2019-11-07 04:11:15,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2019-11-07 04:11:15,772 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:11:15,772 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 04:11:15,772 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:11:15,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:11:15,773 INFO L82 PathProgramCache]: Analyzing trace with hash 1507814418, now seen corresponding path program 1 times [2019-11-07 04:11:15,773 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:11:15,773 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285698881] [2019-11-07 04:11:15,773 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:11:15,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:11:16,228 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 04:11:16,229 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285698881] [2019-11-07 04:11:16,229 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:11:16,229 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-11-07 04:11:16,230 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416267862] [2019-11-07 04:11:16,232 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-07 04:11:16,232 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:11:16,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-07 04:11:16,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-11-07 04:11:16,233 INFO L87 Difference]: Start difference. First operand 452 states and 669 transitions. Second operand 9 states. [2019-11-07 04:11:22,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:11:22,264 INFO L93 Difference]: Finished difference Result 1239 states and 1873 transitions. [2019-11-07 04:11:22,264 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-11-07 04:11:22,264 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 75 [2019-11-07 04:11:22,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:11:22,275 INFO L225 Difference]: With dead ends: 1239 [2019-11-07 04:11:22,275 INFO L226 Difference]: Without dead ends: 829 [2019-11-07 04:11:22,289 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=369, Unknown=0, NotChecked=0, Total=462 [2019-11-07 04:11:22,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 829 states. [2019-11-07 04:11:22,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 829 to 798. [2019-11-07 04:11:22,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 798 states. [2019-11-07 04:11:22,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 798 states to 798 states and 1167 transitions. [2019-11-07 04:11:22,383 INFO L78 Accepts]: Start accepts. Automaton has 798 states and 1167 transitions. Word has length 75 [2019-11-07 04:11:22,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:11:22,385 INFO L462 AbstractCegarLoop]: Abstraction has 798 states and 1167 transitions. [2019-11-07 04:11:22,385 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-07 04:11:22,385 INFO L276 IsEmpty]: Start isEmpty. Operand 798 states and 1167 transitions. [2019-11-07 04:11:22,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2019-11-07 04:11:22,395 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:11:22,395 INFO L410 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] [2019-11-07 04:11:22,395 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:11:22,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:11:22,396 INFO L82 PathProgramCache]: Analyzing trace with hash -801764644, now seen corresponding path program 1 times [2019-11-07 04:11:22,396 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:11:22,396 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785930112] [2019-11-07 04:11:22,396 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:11:22,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:11:22,647 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-07 04:11:22,647 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785930112] [2019-11-07 04:11:22,648 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:11:22,648 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 04:11:22,648 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634174762] [2019-11-07 04:11:22,649 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 04:11:22,649 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:11:22,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 04:11:22,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 04:11:22,649 INFO L87 Difference]: Start difference. First operand 798 states and 1167 transitions. Second operand 5 states. [2019-11-07 04:11:25,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:11:25,765 INFO L93 Difference]: Finished difference Result 2384 states and 3573 transitions. [2019-11-07 04:11:25,766 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 04:11:25,766 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 77 [2019-11-07 04:11:25,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:11:25,789 INFO L225 Difference]: With dead ends: 2384 [2019-11-07 04:11:25,790 INFO L226 Difference]: Without dead ends: 1629 [2019-11-07 04:11:25,796 INFO L630 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 [2019-11-07 04:11:25,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1629 states. [2019-11-07 04:11:25,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1629 to 1533. [2019-11-07 04:11:25,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1533 states. [2019-11-07 04:11:25,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1533 states to 1533 states and 2284 transitions. [2019-11-07 04:11:25,908 INFO L78 Accepts]: Start accepts. Automaton has 1533 states and 2284 transitions. Word has length 77 [2019-11-07 04:11:25,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:11:25,908 INFO L462 AbstractCegarLoop]: Abstraction has 1533 states and 2284 transitions. [2019-11-07 04:11:25,908 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 04:11:25,909 INFO L276 IsEmpty]: Start isEmpty. Operand 1533 states and 2284 transitions. [2019-11-07 04:11:25,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2019-11-07 04:11:25,911 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:11:25,912 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 04:11:25,912 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:11:25,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:11:25,912 INFO L82 PathProgramCache]: Analyzing trace with hash -102609970, now seen corresponding path program 1 times [2019-11-07 04:11:25,913 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:11:25,913 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136202115] [2019-11-07 04:11:25,913 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:11:25,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:11:26,101 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 04:11:26,102 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136202115] [2019-11-07 04:11:26,103 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:11:26,103 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 04:11:26,103 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239579190] [2019-11-07 04:11:26,105 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 04:11:26,105 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:11:26,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 04:11:26,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 04:11:26,106 INFO L87 Difference]: Start difference. First operand 1533 states and 2284 transitions. Second operand 4 states. [2019-11-07 04:11:28,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:11:28,041 INFO L93 Difference]: Finished difference Result 4518 states and 6837 transitions. [2019-11-07 04:11:28,042 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 04:11:28,042 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 77 [2019-11-07 04:11:28,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:11:28,075 INFO L225 Difference]: With dead ends: 4518 [2019-11-07 04:11:28,075 INFO L226 Difference]: Without dead ends: 3029 [2019-11-07 04:11:28,086 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 04:11:28,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3029 states. [2019-11-07 04:11:28,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3029 to 2912. [2019-11-07 04:11:28,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2912 states. [2019-11-07 04:11:28,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2912 states to 2912 states and 4382 transitions. [2019-11-07 04:11:28,391 INFO L78 Accepts]: Start accepts. Automaton has 2912 states and 4382 transitions. Word has length 77 [2019-11-07 04:11:28,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:11:28,395 INFO L462 AbstractCegarLoop]: Abstraction has 2912 states and 4382 transitions. [2019-11-07 04:11:28,395 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 04:11:28,395 INFO L276 IsEmpty]: Start isEmpty. Operand 2912 states and 4382 transitions. [2019-11-07 04:11:28,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2019-11-07 04:11:28,399 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:11:28,399 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 04:11:28,399 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:11:28,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:11:28,400 INFO L82 PathProgramCache]: Analyzing trace with hash 1112656436, now seen corresponding path program 1 times [2019-11-07 04:11:28,400 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:11:28,401 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126359008] [2019-11-07 04:11:28,402 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:11:28,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:11:28,585 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 04:11:28,585 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126359008] [2019-11-07 04:11:28,586 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:11:28,586 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 04:11:28,586 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717719508] [2019-11-07 04:11:28,587 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 04:11:28,587 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:11:28,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 04:11:28,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 04:11:28,589 INFO L87 Difference]: Start difference. First operand 2912 states and 4382 transitions. Second operand 4 states. [2019-11-07 04:11:30,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:11:30,724 INFO L93 Difference]: Finished difference Result 8700 states and 13298 transitions. [2019-11-07 04:11:30,727 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 04:11:30,727 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 78 [2019-11-07 04:11:30,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:11:30,778 INFO L225 Difference]: With dead ends: 8700 [2019-11-07 04:11:30,778 INFO L226 Difference]: Without dead ends: 5833 [2019-11-07 04:11:30,799 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 04:11:30,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5833 states. [2019-11-07 04:11:31,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5833 to 5671. [2019-11-07 04:11:31,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5671 states. [2019-11-07 04:11:31,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5671 states to 5671 states and 8616 transitions. [2019-11-07 04:11:31,240 INFO L78 Accepts]: Start accepts. Automaton has 5671 states and 8616 transitions. Word has length 78 [2019-11-07 04:11:31,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:11:31,240 INFO L462 AbstractCegarLoop]: Abstraction has 5671 states and 8616 transitions. [2019-11-07 04:11:31,240 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 04:11:31,240 INFO L276 IsEmpty]: Start isEmpty. Operand 5671 states and 8616 transitions. [2019-11-07 04:11:31,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2019-11-07 04:11:31,242 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:11:31,242 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 04:11:31,243 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:11:31,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:11:31,243 INFO L82 PathProgramCache]: Analyzing trace with hash 131213264, now seen corresponding path program 1 times [2019-11-07 04:11:31,243 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:11:31,243 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542406324] [2019-11-07 04:11:31,244 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:11:31,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:11:31,364 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 04:11:31,364 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542406324] [2019-11-07 04:11:31,365 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:11:31,365 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 04:11:31,366 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980326688] [2019-11-07 04:11:31,366 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 04:11:31,367 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:11:31,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 04:11:31,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 04:11:31,368 INFO L87 Difference]: Start difference. First operand 5671 states and 8616 transitions. Second operand 4 states. [2019-11-07 04:11:33,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:11:33,718 INFO L93 Difference]: Finished difference Result 17079 states and 26487 transitions. [2019-11-07 04:11:33,719 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 04:11:33,719 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 79 [2019-11-07 04:11:33,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:11:33,817 INFO L225 Difference]: With dead ends: 17079 [2019-11-07 04:11:33,818 INFO L226 Difference]: Without dead ends: 11453 [2019-11-07 04:11:33,853 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 04:11:33,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11453 states. [2019-11-07 04:11:34,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11453 to 11202. [2019-11-07 04:11:34,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11202 states. [2019-11-07 04:11:35,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11202 states to 11202 states and 17242 transitions. [2019-11-07 04:11:35,533 INFO L78 Accepts]: Start accepts. Automaton has 11202 states and 17242 transitions. Word has length 79 [2019-11-07 04:11:35,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:11:35,533 INFO L462 AbstractCegarLoop]: Abstraction has 11202 states and 17242 transitions. [2019-11-07 04:11:35,533 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 04:11:35,534 INFO L276 IsEmpty]: Start isEmpty. Operand 11202 states and 17242 transitions. [2019-11-07 04:11:35,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2019-11-07 04:11:35,535 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:11:35,536 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 04:11:35,536 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:11:35,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:11:35,538 INFO L82 PathProgramCache]: Analyzing trace with hash -228750090, now seen corresponding path program 1 times [2019-11-07 04:11:35,538 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:11:35,539 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490983683] [2019-11-07 04:11:35,539 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:11:35,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:11:35,683 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 04:11:35,683 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490983683] [2019-11-07 04:11:35,684 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:11:35,684 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 04:11:35,684 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452856750] [2019-11-07 04:11:35,684 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 04:11:35,685 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:11:35,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 04:11:35,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 04:11:35,685 INFO L87 Difference]: Start difference. First operand 11202 states and 17242 transitions. Second operand 4 states. [2019-11-07 04:11:38,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:11:38,272 INFO L93 Difference]: Finished difference Result 33890 states and 53811 transitions. [2019-11-07 04:11:38,273 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 04:11:38,273 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 80 [2019-11-07 04:11:38,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:11:38,457 INFO L225 Difference]: With dead ends: 33890 [2019-11-07 04:11:38,457 INFO L226 Difference]: Without dead ends: 22721 [2019-11-07 04:11:38,540 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 04:11:38,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22721 states.