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-f4eb214f-m [2019-10-13 23:04:14,583 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 23:04:14,586 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 23:04:14,606 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 23:04:14,607 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 23:04:14,608 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 23:04:14,609 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 23:04:14,611 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 23:04:14,613 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 23:04:14,614 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 23:04:14,615 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 23:04:14,616 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 23:04:14,617 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 23:04:14,618 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 23:04:14,619 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 23:04:14,620 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 23:04:14,621 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 23:04:14,623 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 23:04:14,625 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 23:04:14,630 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 23:04:14,635 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 23:04:14,638 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 23:04:14,639 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 23:04:14,640 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 23:04:14,647 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 23:04:14,648 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 23:04:14,649 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 23:04:14,650 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 23:04:14,651 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 23:04:14,653 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 23:04:14,653 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 23:04:14,655 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 23:04:14,656 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 23:04:14,657 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 23:04:14,661 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 23:04:14,662 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 23:04:14,663 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 23:04:14,663 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 23:04:14,664 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 23:04:14,666 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 23:04:14,667 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 23:04:14,668 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 23:04:14,688 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 23:04:14,689 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 23:04:14,690 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 23:04:14,690 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 23:04:14,691 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 23:04:14,691 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 23:04:14,691 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 23:04:14,691 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 23:04:14,691 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 23:04:14,692 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 23:04:14,692 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 23:04:14,692 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 23:04:14,692 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 23:04:14,692 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 23:04:14,693 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 23:04:14,693 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 23:04:14,693 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 23:04:14,693 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 23:04:14,694 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 23:04:14,694 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 23:04:14,694 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 23:04:14,694 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:04:14,694 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 23:04:14,695 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 23:04:14,695 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 23:04:14,695 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 23:04:14,695 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 23:04:14,695 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 23:04:14,696 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-13 23:04:14,982 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 23:04:14,996 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 23:04:15,000 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 23:04:15,002 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 23:04:15,002 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 23:04:15,003 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec2_product30.cil.c [2019-10-13 23:04:15,069 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ecc4efa7b/13f4e3ef710f4d3da6c756b1ee4eabf2/FLAG04efeed64 [2019-10-13 23:04:15,778 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 23:04:15,779 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec2_product30.cil.c [2019-10-13 23:04:15,799 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ecc4efa7b/13f4e3ef710f4d3da6c756b1ee4eabf2/FLAG04efeed64 [2019-10-13 23:04:15,885 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ecc4efa7b/13f4e3ef710f4d3da6c756b1ee4eabf2 [2019-10-13 23:04:15,897 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 23:04:15,899 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 23:04:15,900 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 23:04:15,900 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 23:04:15,903 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 23:04:15,905 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:04:15" (1/1) ... [2019-10-13 23:04:15,908 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5baf383 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:15, skipping insertion in model container [2019-10-13 23:04:15,908 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:04:15" (1/1) ... [2019-10-13 23:04:15,915 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 23:04:16,005 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 23:04:16,728 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:04:16,747 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 23:04:16,888 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:04:16,977 INFO L192 MainTranslator]: Completed translation [2019-10-13 23:04:16,978 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:16 WrapperNode [2019-10-13 23:04:16,978 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 23:04:16,979 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 23:04:16,980 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 23:04:16,980 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 23:04:16,991 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:16" (1/1) ... [2019-10-13 23:04:16,991 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:16" (1/1) ... [2019-10-13 23:04:17,036 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:16" (1/1) ... [2019-10-13 23:04:17,037 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:16" (1/1) ... [2019-10-13 23:04:17,140 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:16" (1/1) ... [2019-10-13 23:04:17,168 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:16" (1/1) ... [2019-10-13 23:04:17,179 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:16" (1/1) ... [2019-10-13 23:04:17,199 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 23:04:17,199 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 23:04:17,200 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 23:04:17,200 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 23:04:17,203 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:16" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:04:17,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 23:04:17,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 23:04:17,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 23:04:17,299 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-13 23:04:17,299 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-13 23:04:17,300 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-13 23:04:17,301 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-13 23:04:17,301 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-13 23:04:17,301 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-13 23:04:17,302 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-13 23:04:17,302 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-13 23:04:17,303 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-13 23:04:17,303 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-13 23:04:17,303 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-13 23:04:17,304 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 23:04:17,304 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-13 23:04:17,307 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-13 23:04:17,307 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-13 23:04:17,307 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 23:04:17,307 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-13 23:04:17,308 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 23:04:17,308 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 23:04:17,309 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 23:04:17,309 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-13 23:04:17,309 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-13 23:04:17,309 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 23:04:17,309 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-13 23:04:17,310 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-13 23:04:17,310 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-13 23:04:17,310 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-13 23:04:17,310 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-13 23:04:17,310 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-13 23:04:17,311 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-13 23:04:17,311 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-13 23:04:17,311 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 23:04:17,311 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 23:04:17,311 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 23:04:17,312 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 23:04:17,312 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 23:04:17,312 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2019-10-13 23:04:17,312 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2019-10-13 23:04:17,312 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__3 [2019-10-13 23:04:17,312 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__4 [2019-10-13 23:04:17,313 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-13 23:04:17,313 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-13 23:04:17,313 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-13 23:04:17,313 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-13 23:04:17,313 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-13 23:04:17,314 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-13 23:04:17,314 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__weight [2019-10-13 23:04:17,314 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-13 23:04:17,314 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-13 23:04:17,314 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-13 23:04:17,315 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-13 23:04:17,315 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-13 23:04:17,315 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-13 23:04:17,315 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-13 23:04:17,315 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-13 23:04:17,316 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-13 23:04:17,316 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-13 23:04:17,317 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2019-10-13 23:04:17,317 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-13 23:04:17,317 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-13 23:04:17,317 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-13 23:04:17,318 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-13 23:04:17,318 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-13 23:04:17,318 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-13 23:04:17,318 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-13 23:04:17,318 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__twothirdsfull [2019-10-13 23:04:17,319 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 23:04:17,319 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__wrappee__twothirdsfull [2019-10-13 23:04:17,319 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-13 23:04:17,319 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-13 23:04:17,320 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 23:04:17,321 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 23:04:17,321 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 23:04:17,321 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 23:04:17,322 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 23:04:17,322 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 23:04:17,322 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 23:04:17,322 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 23:04:17,323 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-13 23:04:17,323 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-13 23:04:17,324 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-13 23:04:17,324 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 23:04:17,324 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-13 23:04:17,324 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-13 23:04:17,325 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-13 23:04:17,325 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-13 23:04:17,326 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-13 23:04:17,326 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-13 23:04:17,326 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-13 23:04:17,326 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-13 23:04:17,326 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 23:04:17,326 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-13 23:04:17,327 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-13 23:04:17,327 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-13 23:04:17,327 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 23:04:17,327 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-13 23:04:17,327 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-13 23:04:17,328 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-13 23:04:17,328 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-13 23:04:17,328 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-13 23:04:17,328 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 23:04:17,328 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-13 23:04:17,328 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 23:04:17,329 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2019-10-13 23:04:17,329 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__4 [2019-10-13 23:04:17,329 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 23:04:17,329 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 23:04:17,329 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 23:04:17,330 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 23:04:17,330 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 23:04:17,330 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 23:04:17,330 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-13 23:04:17,330 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-13 23:04:17,331 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-13 23:04:17,331 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 23:04:17,331 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-13 23:04:17,332 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-13 23:04:17,332 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-13 23:04:17,332 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-13 23:04:17,332 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-13 23:04:17,333 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-13 23:04:17,334 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-13 23:04:17,334 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 23:04:17,334 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-13 23:04:17,334 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-13 23:04:17,335 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2019-10-13 23:04:17,335 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__3 [2019-10-13 23:04:17,335 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 23:04:17,336 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-13 23:04:17,336 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-13 23:04:17,337 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-13 23:04:17,337 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-13 23:04:17,338 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-13 23:04:17,338 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-13 23:04:17,338 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__weight [2019-10-13 23:04:17,338 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-13 23:04:17,338 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-13 23:04:17,338 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-13 23:04:17,339 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-13 23:04:17,339 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-13 23:04:17,339 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2019-10-13 23:04:17,339 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-13 23:04:17,339 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-13 23:04:17,339 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-13 23:04:17,339 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-13 23:04:17,340 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-13 23:04:17,340 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-13 23:04:17,340 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__twothirdsfull [2019-10-13 23:04:17,340 INFO L130 BoogieDeclarations]: Found specification of procedure printState__wrappee__twothirdsfull [2019-10-13 23:04:17,340 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 23:04:17,340 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-13 23:04:17,340 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 23:04:17,341 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 23:04:17,341 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 23:04:17,341 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 23:04:17,341 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 23:04:17,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 23:04:17,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 23:04:17,342 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 23:04:17,342 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 23:04:17,342 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 23:04:17,342 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 23:04:17,342 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 23:04:17,342 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 23:04:17,343 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 23:04:17,343 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 23:04:17,343 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 23:04:17,343 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 23:04:17,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 23:04:17,343 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 23:04:22,562 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 23:04:22,563 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-13 23:04:22,565 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:04:22 BoogieIcfgContainer [2019-10-13 23:04:22,565 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 23:04:22,566 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 23:04:22,566 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 23:04:22,569 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 23:04:22,570 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:04:15" (1/3) ... [2019-10-13 23:04:22,571 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51e8e5a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:04:22, skipping insertion in model container [2019-10-13 23:04:22,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:16" (2/3) ... [2019-10-13 23:04:22,571 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51e8e5a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:04:22, skipping insertion in model container [2019-10-13 23:04:22,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:04:22" (3/3) ... [2019-10-13 23:04:22,573 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product30.cil.c [2019-10-13 23:04:22,584 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 23:04:22,593 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 23:04:22,605 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 23:04:22,635 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 23:04:22,635 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 23:04:22,636 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 23:04:22,636 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 23:04:22,636 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 23:04:22,636 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 23:04:22,636 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 23:04:22,636 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 23:04:22,670 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states. [2019-10-13 23:04:22,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2019-10-13 23:04:22,683 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:04:22,684 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:04:22,686 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:04:22,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:04:22,693 INFO L82 PathProgramCache]: Analyzing trace with hash -1476435003, now seen corresponding path program 1 times [2019-10-13 23:04:22,703 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:04:22,703 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466670493] [2019-10-13 23:04:22,704 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:22,704 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:22,704 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:04:23,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:04:23,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:04:23,308 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466670493] [2019-10-13 23:04:23,310 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:04:23,310 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 23:04:23,311 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126863083] [2019-10-13 23:04:23,318 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 23:04:23,318 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:04:23,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 23:04:23,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 23:04:23,341 INFO L87 Difference]: Start difference. First operand 589 states. Second operand 2 states. [2019-10-13 23:04:23,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:04:23,475 INFO L93 Difference]: Finished difference Result 486 states and 720 transitions. [2019-10-13 23:04:23,476 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 23:04:23,478 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 74 [2019-10-13 23:04:23,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:04:23,515 INFO L225 Difference]: With dead ends: 486 [2019-10-13 23:04:23,515 INFO L226 Difference]: Without dead ends: 452 [2019-10-13 23:04:23,522 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 23:04:23,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2019-10-13 23:04:23,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 452. [2019-10-13 23:04:23,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 452 states. [2019-10-13 23:04:23,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 669 transitions. [2019-10-13 23:04:23,666 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 669 transitions. Word has length 74 [2019-10-13 23:04:23,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:04:23,668 INFO L462 AbstractCegarLoop]: Abstraction has 452 states and 669 transitions. [2019-10-13 23:04:23,668 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 23:04:23,669 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 669 transitions. [2019-10-13 23:04:23,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2019-10-13 23:04:23,684 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:04:23,684 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:04:23,684 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:04:23,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:04:23,686 INFO L82 PathProgramCache]: Analyzing trace with hash 1507814418, now seen corresponding path program 1 times [2019-10-13 23:04:23,686 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:04:23,686 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417033416] [2019-10-13 23:04:23,686 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:23,686 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:23,687 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:04:23,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:04:24,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:04:24,037 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417033416] [2019-10-13 23:04:24,038 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:04:24,038 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-13 23:04:24,038 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113823101] [2019-10-13 23:04:24,041 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 23:04:24,042 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:04:24,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 23:04:24,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-10-13 23:04:24,043 INFO L87 Difference]: Start difference. First operand 452 states and 669 transitions. Second operand 9 states. [2019-10-13 23:04:30,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:04:30,043 INFO L93 Difference]: Finished difference Result 1239 states and 1873 transitions. [2019-10-13 23:04:30,047 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-10-13 23:04:30,048 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 75 [2019-10-13 23:04:30,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:04:30,056 INFO L225 Difference]: With dead ends: 1239 [2019-10-13 23:04:30,056 INFO L226 Difference]: Without dead ends: 829 [2019-10-13 23:04:30,069 INFO L600 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 [2019-10-13 23:04:30,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 829 states. [2019-10-13 23:04:30,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 829 to 798. [2019-10-13 23:04:30,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 798 states. [2019-10-13 23:04:30,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 798 states to 798 states and 1167 transitions. [2019-10-13 23:04:30,133 INFO L78 Accepts]: Start accepts. Automaton has 798 states and 1167 transitions. Word has length 75 [2019-10-13 23:04:30,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:04:30,134 INFO L462 AbstractCegarLoop]: Abstraction has 798 states and 1167 transitions. [2019-10-13 23:04:30,134 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 23:04:30,134 INFO L276 IsEmpty]: Start isEmpty. Operand 798 states and 1167 transitions. [2019-10-13 23:04:30,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2019-10-13 23:04:30,136 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:04:30,137 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:04:30,137 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:04:30,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:04:30,138 INFO L82 PathProgramCache]: Analyzing trace with hash -801764644, now seen corresponding path program 1 times [2019-10-13 23:04:30,138 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:04:30,138 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877877620] [2019-10-13 23:04:30,138 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:30,138 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:30,139 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:04:30,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:04:30,383 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-13 23:04:30,383 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877877620] [2019-10-13 23:04:30,384 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:04:30,384 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 23:04:30,384 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712585459] [2019-10-13 23:04:30,385 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 23:04:30,385 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:04:30,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 23:04:30,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 23:04:30,386 INFO L87 Difference]: Start difference. First operand 798 states and 1167 transitions. Second operand 5 states. [2019-10-13 23:04:32,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:04:32,889 INFO L93 Difference]: Finished difference Result 2384 states and 3573 transitions. [2019-10-13 23:04:32,890 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 23:04:32,890 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 77 [2019-10-13 23:04:32,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:04:32,907 INFO L225 Difference]: With dead ends: 2384 [2019-10-13 23:04:32,908 INFO L226 Difference]: Without dead ends: 1629 [2019-10-13 23:04:32,913 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-10-13 23:04:32,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1629 states. [2019-10-13 23:04:33,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1629 to 1533. [2019-10-13 23:04:33,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1533 states. [2019-10-13 23:04:33,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1533 states to 1533 states and 2284 transitions. [2019-10-13 23:04:33,025 INFO L78 Accepts]: Start accepts. Automaton has 1533 states and 2284 transitions. Word has length 77 [2019-10-13 23:04:33,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:04:33,026 INFO L462 AbstractCegarLoop]: Abstraction has 1533 states and 2284 transitions. [2019-10-13 23:04:33,026 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 23:04:33,026 INFO L276 IsEmpty]: Start isEmpty. Operand 1533 states and 2284 transitions. [2019-10-13 23:04:33,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2019-10-13 23:04:33,028 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:04:33,028 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:04:33,029 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:04:33,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:04:33,029 INFO L82 PathProgramCache]: Analyzing trace with hash -102609970, now seen corresponding path program 1 times [2019-10-13 23:04:33,029 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:04:33,030 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471283777] [2019-10-13 23:04:33,030 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:33,030 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:33,030 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:04:33,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:04:33,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:04:33,171 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471283777] [2019-10-13 23:04:33,171 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:04:33,172 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 23:04:33,172 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140852952] [2019-10-13 23:04:33,172 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 23:04:33,173 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:04:33,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 23:04:33,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 23:04:33,173 INFO L87 Difference]: Start difference. First operand 1533 states and 2284 transitions. Second operand 4 states. [2019-10-13 23:04:35,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:04:35,014 INFO L93 Difference]: Finished difference Result 4518 states and 6837 transitions. [2019-10-13 23:04:35,015 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 23:04:35,015 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 77 [2019-10-13 23:04:35,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:04:35,042 INFO L225 Difference]: With dead ends: 4518 [2019-10-13 23:04:35,042 INFO L226 Difference]: Without dead ends: 3029 [2019-10-13 23:04:35,053 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-13 23:04:35,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3029 states. [2019-10-13 23:04:35,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3029 to 2912. [2019-10-13 23:04:35,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2912 states. [2019-10-13 23:04:35,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2912 states to 2912 states and 4382 transitions. [2019-10-13 23:04:35,309 INFO L78 Accepts]: Start accepts. Automaton has 2912 states and 4382 transitions. Word has length 77 [2019-10-13 23:04:35,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:04:35,310 INFO L462 AbstractCegarLoop]: Abstraction has 2912 states and 4382 transitions. [2019-10-13 23:04:35,310 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 23:04:35,311 INFO L276 IsEmpty]: Start isEmpty. Operand 2912 states and 4382 transitions. [2019-10-13 23:04:35,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2019-10-13 23:04:35,314 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:04:35,314 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:04:35,314 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:04:35,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:04:35,315 INFO L82 PathProgramCache]: Analyzing trace with hash 1112656436, now seen corresponding path program 1 times [2019-10-13 23:04:35,315 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:04:35,316 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298248597] [2019-10-13 23:04:35,316 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:35,316 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:35,317 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:04:35,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:04:35,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:04:35,520 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298248597] [2019-10-13 23:04:35,520 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:04:35,520 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 23:04:35,520 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522933410] [2019-10-13 23:04:35,521 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 23:04:35,521 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:04:35,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 23:04:35,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 23:04:35,522 INFO L87 Difference]: Start difference. First operand 2912 states and 4382 transitions. Second operand 4 states. [2019-10-13 23:04:37,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:04:37,779 INFO L93 Difference]: Finished difference Result 8700 states and 13298 transitions. [2019-10-13 23:04:37,780 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 23:04:37,780 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 78 [2019-10-13 23:04:37,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:04:37,832 INFO L225 Difference]: With dead ends: 8700 [2019-10-13 23:04:37,832 INFO L226 Difference]: Without dead ends: 5833 [2019-10-13 23:04:37,849 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-13 23:04:37,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5833 states. [2019-10-13 23:04:38,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5833 to 5671. [2019-10-13 23:04:38,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5671 states. [2019-10-13 23:04:38,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5671 states to 5671 states and 8616 transitions. [2019-10-13 23:04:38,232 INFO L78 Accepts]: Start accepts. Automaton has 5671 states and 8616 transitions. Word has length 78 [2019-10-13 23:04:38,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:04:38,235 INFO L462 AbstractCegarLoop]: Abstraction has 5671 states and 8616 transitions. [2019-10-13 23:04:38,236 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 23:04:38,236 INFO L276 IsEmpty]: Start isEmpty. Operand 5671 states and 8616 transitions. [2019-10-13 23:04:38,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2019-10-13 23:04:38,243 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:04:38,243 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:04:38,243 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:04:38,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:04:38,244 INFO L82 PathProgramCache]: Analyzing trace with hash 131213264, now seen corresponding path program 1 times [2019-10-13 23:04:38,245 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:04:38,255 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521557021] [2019-10-13 23:04:38,255 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:38,255 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:38,256 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:04:38,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:04:38,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:04:38,477 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521557021] [2019-10-13 23:04:38,478 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:04:38,478 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 23:04:38,479 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911406166] [2019-10-13 23:04:38,479 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 23:04:38,480 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:04:38,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 23:04:38,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 23:04:38,481 INFO L87 Difference]: Start difference. First operand 5671 states and 8616 transitions. Second operand 4 states. [2019-10-13 23:04:41,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:04:41,035 INFO L93 Difference]: Finished difference Result 17079 states and 26487 transitions. [2019-10-13 23:04:41,035 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 23:04:41,036 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 79 [2019-10-13 23:04:41,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:04:41,168 INFO L225 Difference]: With dead ends: 17079 [2019-10-13 23:04:41,169 INFO L226 Difference]: Without dead ends: 11453 [2019-10-13 23:04:41,218 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-13 23:04:41,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11453 states. [2019-10-13 23:04:42,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11453 to 11202. [2019-10-13 23:04:42,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11202 states. [2019-10-13 23:04:42,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11202 states to 11202 states and 17242 transitions. [2019-10-13 23:04:42,194 INFO L78 Accepts]: Start accepts. Automaton has 11202 states and 17242 transitions. Word has length 79 [2019-10-13 23:04:42,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:04:42,195 INFO L462 AbstractCegarLoop]: Abstraction has 11202 states and 17242 transitions. [2019-10-13 23:04:42,195 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 23:04:42,195 INFO L276 IsEmpty]: Start isEmpty. Operand 11202 states and 17242 transitions. [2019-10-13 23:04:42,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2019-10-13 23:04:42,197 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:04:42,197 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:04:42,197 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:04:42,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:04:42,198 INFO L82 PathProgramCache]: Analyzing trace with hash -228750090, now seen corresponding path program 1 times [2019-10-13 23:04:42,198 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:04:42,198 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944353074] [2019-10-13 23:04:42,198 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:42,198 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:42,199 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:04:42,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:04:42,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:04:42,330 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944353074] [2019-10-13 23:04:42,330 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:04:42,330 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 23:04:42,330 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461702813] [2019-10-13 23:04:42,331 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 23:04:42,331 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:04:42,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 23:04:42,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 23:04:42,332 INFO L87 Difference]: Start difference. First operand 11202 states and 17242 transitions. Second operand 4 states. [2019-10-13 23:04:44,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:04:44,723 INFO L93 Difference]: Finished difference Result 33890 states and 53811 transitions. [2019-10-13 23:04:44,724 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 23:04:44,724 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 80 [2019-10-13 23:04:44,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:04:44,902 INFO L225 Difference]: With dead ends: 33890 [2019-10-13 23:04:44,902 INFO L226 Difference]: Without dead ends: 22721 [2019-10-13 23:04:44,981 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-13 23:04:45,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22721 states.