/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_spec3_product11.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 04:11:23,265 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 04:11:23,267 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 04:11:23,280 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 04:11:23,280 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 04:11:23,281 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 04:11:23,282 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 04:11:23,284 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 04:11:23,286 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 04:11:23,287 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 04:11:23,288 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 04:11:23,289 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 04:11:23,290 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 04:11:23,291 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 04:11:23,292 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 04:11:23,293 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 04:11:23,294 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 04:11:23,295 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 04:11:23,296 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 04:11:23,298 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 04:11:23,300 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 04:11:23,301 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 04:11:23,303 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 04:11:23,304 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 04:11:23,306 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 04:11:23,306 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 04:11:23,307 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 04:11:23,308 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 04:11:23,308 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 04:11:23,309 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 04:11:23,309 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 04:11:23,310 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 04:11:23,311 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 04:11:23,312 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 04:11:23,313 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 04:11:23,313 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 04:11:23,314 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 04:11:23,314 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 04:11:23,314 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 04:11:23,315 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 04:11:23,316 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 04:11:23,317 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 04:11:23,340 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 04:11:23,341 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 04:11:23,342 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 04:11:23,343 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 04:11:23,343 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 04:11:23,343 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 04:11:23,343 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 04:11:23,344 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 04:11:23,344 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 04:11:23,344 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 04:11:23,344 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 04:11:23,344 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 04:11:23,345 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 04:11:23,345 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 04:11:23,345 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 04:11:23,345 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 04:11:23,345 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 04:11:23,346 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 04:11:23,346 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 04:11:23,346 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 04:11:23,346 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 04:11:23,346 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 04:11:23,347 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 04:11:23,347 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 04:11:23,347 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 04:11:23,347 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 04:11:23,347 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 04:11:23,348 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 04:11:23,348 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 04:11:23,622 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 04:11:23,639 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 04:11:23,643 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 04:11:23,644 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 04:11:23,645 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 04:11:23,646 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec3_product11.cil.c [2019-11-07 04:11:23,708 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d5d2a9b9/cc7effb248c54c97a8be8247f0089749/FLAGecee607eb [2019-11-07 04:11:24,374 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 04:11:24,374 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec3_product11.cil.c [2019-11-07 04:11:24,397 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d5d2a9b9/cc7effb248c54c97a8be8247f0089749/FLAGecee607eb [2019-11-07 04:11:24,572 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d5d2a9b9/cc7effb248c54c97a8be8247f0089749 [2019-11-07 04:11:24,582 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 04:11:24,584 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 04:11:24,585 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 04:11:24,585 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 04:11:24,588 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 04:11:24,589 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:11:24" (1/1) ... [2019-11-07 04:11:24,592 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64512e19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:11:24, skipping insertion in model container [2019-11-07 04:11:24,593 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:11:24" (1/1) ... [2019-11-07 04:11:24,600 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 04:11:24,687 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 04:11:25,295 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:11:25,320 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 04:11:25,464 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:11:25,522 INFO L192 MainTranslator]: Completed translation [2019-11-07 04:11:25,523 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:11:25 WrapperNode [2019-11-07 04:11:25,523 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 04:11:25,524 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 04:11:25,524 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 04:11:25,524 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 04:11:25,539 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:11:25" (1/1) ... [2019-11-07 04:11:25,540 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:11:25" (1/1) ... [2019-11-07 04:11:25,581 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:11:25" (1/1) ... [2019-11-07 04:11:25,581 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:11:25" (1/1) ... [2019-11-07 04:11:25,661 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:11:25" (1/1) ... [2019-11-07 04:11:25,687 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:11:25" (1/1) ... [2019-11-07 04:11:25,697 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:11:25" (1/1) ... [2019-11-07 04:11:25,713 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 04:11:25,714 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 04:11:25,714 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 04:11:25,715 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 04:11:25,718 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:11:25" (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 04:11:25,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 04:11:25,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 04:11:25,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-07 04:11:25,782 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-07 04:11:25,782 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-07 04:11:25,782 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-07 04:11:25,783 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-07 04:11:25,783 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-07 04:11:25,783 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-07 04:11:25,783 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-07 04:11:25,784 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-11-07 04:11:25,784 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-11-07 04:11:25,784 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-11-07 04:11:25,784 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-11-07 04:11:25,785 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-11-07 04:11:25,785 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2019-11-07 04:11:25,785 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__2 [2019-11-07 04:11:25,785 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-11-07 04:11:25,786 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-11-07 04:11:25,786 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-11-07 04:11:25,786 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-11-07 04:11:25,786 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-11-07 04:11:25,786 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-11-07 04:11:25,787 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-11-07 04:11:25,787 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-11-07 04:11:25,787 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-11-07 04:11:25,787 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-11-07 04:11:25,788 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-11-07 04:11:25,788 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-11-07 04:11:25,788 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-11-07 04:11:25,788 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-11-07 04:11:25,788 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-07 04:11:25,789 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-11-07 04:11:25,789 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 04:11:25,789 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-07 04:11:25,789 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-11-07 04:11:25,790 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-11-07 04:11:25,790 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-11-07 04:11:25,790 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-11-07 04:11:25,790 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-11-07 04:11:25,790 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-11-07 04:11:25,791 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-11-07 04:11:25,791 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-11-07 04:11:25,791 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-11-07 04:11:25,791 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-11-07 04:11:25,791 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-11-07 04:11:25,791 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-11-07 04:11:25,792 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-11-07 04:11:25,792 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-11-07 04:11:25,792 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-11-07 04:11:25,792 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2019-11-07 04:11:25,792 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-11-07 04:11:25,792 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-11-07 04:11:25,793 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-11-07 04:11:25,793 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-11-07 04:11:25,793 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-11-07 04:11:25,793 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-11-07 04:11:25,793 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-11-07 04:11:25,794 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-11-07 04:11:25,794 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-11-07 04:11:25,794 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-11-07 04:11:25,794 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-11-07 04:11:25,794 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-11-07 04:11:25,794 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-11-07 04:11:25,795 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-11-07 04:11:25,795 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-11-07 04:11:25,795 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-11-07 04:11:25,795 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-11-07 04:11:25,795 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-11-07 04:11:25,796 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-11-07 04:11:25,796 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-11-07 04:11:25,796 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-07 04:11:25,796 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-07 04:11:25,796 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-07 04:11:25,796 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-07 04:11:25,797 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 04:11:25,797 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 04:11:25,797 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-07 04:11:25,797 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-07 04:11:25,797 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 04:11:25,798 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 04:11:25,798 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-07 04:11:25,798 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 04:11:25,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 04:11:25,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 04:11:25,799 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 04:11:25,799 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-07 04:11:25,799 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 04:11:25,799 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-07 04:11:25,799 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-07 04:11:25,800 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 04:11:25,800 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-07 04:11:25,800 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-07 04:11:25,800 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 04:11:25,800 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-07 04:11:25,800 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-11-07 04:11:25,801 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-11-07 04:11:25,801 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-11-07 04:11:25,801 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-11-07 04:11:25,801 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-11-07 04:11:25,801 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-11-07 04:11:25,801 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-11-07 04:11:25,802 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-11-07 04:11:25,802 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-11-07 04:11:25,802 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-11-07 04:11:25,802 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-11-07 04:11:25,802 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-11-07 04:11:25,803 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-11-07 04:11:25,803 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-11-07 04:11:25,803 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2019-11-07 04:11:25,803 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__2 [2019-11-07 04:11:25,803 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-07 04:11:25,803 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-11-07 04:11:25,804 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-11-07 04:11:25,804 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-11-07 04:11:25,804 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-11-07 04:11:25,804 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-11-07 04:11:25,804 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-11-07 04:11:25,804 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-11-07 04:11:25,805 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-11-07 04:11:25,805 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-11-07 04:11:25,805 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-11-07 04:11:25,805 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-11-07 04:11:25,805 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-11-07 04:11:25,806 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-11-07 04:11:25,806 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-11-07 04:11:25,806 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-11-07 04:11:25,806 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-07 04:11:25,806 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-07 04:11:25,806 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-11-07 04:11:25,807 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-07 04:11:25,807 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-07 04:11:25,807 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-07 04:11:25,807 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 04:11:25,807 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-07 04:11:25,808 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-11-07 04:11:25,808 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-11-07 04:11:25,808 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-11-07 04:11:25,808 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-11-07 04:11:25,808 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-11-07 04:11:25,809 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-11-07 04:11:25,809 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-11-07 04:11:25,809 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-11-07 04:11:25,809 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-11-07 04:11:25,809 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-11-07 04:11:25,809 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-11-07 04:11:25,810 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-11-07 04:11:25,810 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-11-07 04:11:25,810 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-11-07 04:11:25,810 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-11-07 04:11:25,810 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-11-07 04:11:25,811 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-11-07 04:11:25,811 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2019-11-07 04:11:25,811 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-11-07 04:11:25,811 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-11-07 04:11:25,811 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-11-07 04:11:25,811 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-11-07 04:11:25,812 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-11-07 04:11:25,812 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-11-07 04:11:25,812 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-11-07 04:11:25,812 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-11-07 04:11:25,812 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-07 04:11:25,812 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 04:11:25,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 04:11:25,813 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 04:11:30,629 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 04:11:30,629 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-11-07 04:11:30,631 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:11:30 BoogieIcfgContainer [2019-11-07 04:11:30,631 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 04:11:30,632 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 04:11:30,633 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 04:11:30,636 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 04:11:30,636 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:11:24" (1/3) ... [2019-11-07 04:11:30,637 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6192aff8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:11:30, skipping insertion in model container [2019-11-07 04:11:30,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:11:25" (2/3) ... [2019-11-07 04:11:30,637 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6192aff8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:11:30, skipping insertion in model container [2019-11-07 04:11:30,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:11:30" (3/3) ... [2019-11-07 04:11:30,639 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product11.cil.c [2019-11-07 04:11:30,649 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 04:11:30,658 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 04:11:30,669 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 04:11:30,701 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 04:11:30,701 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 04:11:30,701 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 04:11:30,701 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 04:11:30,701 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 04:11:30,702 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 04:11:30,702 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 04:11:30,702 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 04:11:30,736 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states. [2019-11-07 04:11:30,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-11-07 04:11:30,757 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:11:30,758 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:11:30,761 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:11:30,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:11:30,767 INFO L82 PathProgramCache]: Analyzing trace with hash 138633928, now seen corresponding path program 1 times [2019-11-07 04:11:30,777 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:11:30,777 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108247771] [2019-11-07 04:11:30,778 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:11:31,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:11:31,616 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-11-07 04:11:31,617 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108247771] [2019-11-07 04:11:31,618 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:11:31,618 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 04:11:31,620 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122701835] [2019-11-07 04:11:31,629 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 04:11:31,629 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:11:31,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 04:11:31,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-07 04:11:31,648 INFO L87 Difference]: Start difference. First operand 588 states. Second operand 7 states. [2019-11-07 04:11:34,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:11:34,564 INFO L93 Difference]: Finished difference Result 1754 states and 2733 transitions. [2019-11-07 04:11:34,565 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-07 04:11:34,566 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 119 [2019-11-07 04:11:34,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:11:34,596 INFO L225 Difference]: With dead ends: 1754 [2019-11-07 04:11:34,597 INFO L226 Difference]: Without dead ends: 1288 [2019-11-07 04:11:34,608 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2019-11-07 04:11:34,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1288 states. [2019-11-07 04:11:34,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1288 to 1248. [2019-11-07 04:11:34,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1248 states. [2019-11-07 04:11:34,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1248 states to 1248 states and 1923 transitions. [2019-11-07 04:11:34,838 INFO L78 Accepts]: Start accepts. Automaton has 1248 states and 1923 transitions. Word has length 119 [2019-11-07 04:11:34,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:11:34,839 INFO L462 AbstractCegarLoop]: Abstraction has 1248 states and 1923 transitions. [2019-11-07 04:11:34,839 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 04:11:34,840 INFO L276 IsEmpty]: Start isEmpty. Operand 1248 states and 1923 transitions. [2019-11-07 04:11:34,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2019-11-07 04:11:34,857 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:11:34,858 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:11:34,858 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:11:34,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:11:34,859 INFO L82 PathProgramCache]: Analyzing trace with hash -306320997, now seen corresponding path program 1 times [2019-11-07 04:11:34,859 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:11:34,859 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241377042] [2019-11-07 04:11:34,859 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:11:35,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:11:35,335 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-07 04:11:35,336 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241377042] [2019-11-07 04:11:35,336 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1828412776] [2019-11-07 04:11:35,337 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:11:36,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:11:36,010 INFO L256 TraceCheckSpWp]: Trace formula consists of 2982 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-07 04:11:36,028 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:11:36,088 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-07 04:11:36,088 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:11:36,254 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-11-07 04:11:36,254 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 04:11:36,255 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 9 [2019-11-07 04:11:36,256 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026995267] [2019-11-07 04:11:36,257 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 04:11:36,258 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:11:36,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 04:11:36,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-11-07 04:11:36,259 INFO L87 Difference]: Start difference. First operand 1248 states and 1923 transitions. Second operand 3 states. [2019-11-07 04:11:36,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:11:36,419 INFO L93 Difference]: Finished difference Result 3516 states and 5546 transitions. [2019-11-07 04:11:36,420 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 04:11:36,420 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 118 [2019-11-07 04:11:36,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:11:36,442 INFO L225 Difference]: With dead ends: 3516 [2019-11-07 04:11:36,443 INFO L226 Difference]: Without dead ends: 2299 [2019-11-07 04:11:36,452 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 237 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-11-07 04:11:36,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2299 states. [2019-11-07 04:11:36,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2299 to 2231. [2019-11-07 04:11:36,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2231 states. [2019-11-07 04:11:36,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2231 states to 2231 states and 3466 transitions. [2019-11-07 04:11:36,614 INFO L78 Accepts]: Start accepts. Automaton has 2231 states and 3466 transitions. Word has length 118 [2019-11-07 04:11:36,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:11:36,618 INFO L462 AbstractCegarLoop]: Abstraction has 2231 states and 3466 transitions. [2019-11-07 04:11:36,618 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 04:11:36,618 INFO L276 IsEmpty]: Start isEmpty. Operand 2231 states and 3466 transitions. [2019-11-07 04:11:36,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-11-07 04:11:36,638 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:11:36,638 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:11:36,845 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:11:36,846 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:11:36,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:11:36,846 INFO L82 PathProgramCache]: Analyzing trace with hash 1718735099, now seen corresponding path program 1 times [2019-11-07 04:11:36,847 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:11:36,847 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759677547] [2019-11-07 04:11:36,847 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:11:36,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:11:37,131 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-07 04:11:37,132 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759677547] [2019-11-07 04:11:37,132 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [508046561] [2019-11-07 04:11:37,132 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:11:37,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:11:37,820 INFO L256 TraceCheckSpWp]: Trace formula consists of 2995 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-07 04:11:37,843 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:11:37,900 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-11-07 04:11:37,900 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:11:38,042 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-11-07 04:11:38,043 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 04:11:38,043 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 10 [2019-11-07 04:11:38,043 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374121228] [2019-11-07 04:11:38,044 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 04:11:38,044 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:11:38,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 04:11:38,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-11-07 04:11:38,044 INFO L87 Difference]: Start difference. First operand 2231 states and 3466 transitions. Second operand 4 states. [2019-11-07 04:11:38,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:11:38,223 INFO L93 Difference]: Finished difference Result 4313 states and 6775 transitions. [2019-11-07 04:11:38,223 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 04:11:38,223 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 120 [2019-11-07 04:11:38,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:11:38,241 INFO L225 Difference]: With dead ends: 4313 [2019-11-07 04:11:38,241 INFO L226 Difference]: Without dead ends: 2113 [2019-11-07 04:11:38,256 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-11-07 04:11:38,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2113 states. [2019-11-07 04:11:38,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2113 to 2063. [2019-11-07 04:11:38,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2063 states. [2019-11-07 04:11:38,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2063 states to 2063 states and 3177 transitions. [2019-11-07 04:11:38,396 INFO L78 Accepts]: Start accepts. Automaton has 2063 states and 3177 transitions. Word has length 120 [2019-11-07 04:11:38,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:11:38,397 INFO L462 AbstractCegarLoop]: Abstraction has 2063 states and 3177 transitions. [2019-11-07 04:11:38,397 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 04:11:38,397 INFO L276 IsEmpty]: Start isEmpty. Operand 2063 states and 3177 transitions. [2019-11-07 04:11:38,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-11-07 04:11:38,401 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:11:38,401 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:11:38,608 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:11:38,609 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:11:38,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:11:38,610 INFO L82 PathProgramCache]: Analyzing trace with hash -1806161369, now seen corresponding path program 1 times [2019-11-07 04:11:38,610 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:11:38,610 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302876548] [2019-11-07 04:11:38,611 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:11:38,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:11:38,894 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-07 04:11:38,895 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302876548] [2019-11-07 04:11:38,896 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1465305909] [2019-11-07 04:11:38,896 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:11:39,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:11:39,453 INFO L256 TraceCheckSpWp]: Trace formula consists of 2983 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-07 04:11:39,463 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:11:39,499 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-07 04:11:39,499 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:11:39,623 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-11-07 04:11:39,623 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 04:11:39,624 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 9 [2019-11-07 04:11:39,624 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966421714] [2019-11-07 04:11:39,626 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 04:11:39,626 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:11:39,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 04:11:39,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-11-07 04:11:39,626 INFO L87 Difference]: Start difference. First operand 2063 states and 3177 transitions. Second operand 3 states. [2019-11-07 04:11:39,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:11:39,824 INFO L93 Difference]: Finished difference Result 5144 states and 8069 transitions. [2019-11-07 04:11:39,824 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 04:11:39,824 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 119 [2019-11-07 04:11:39,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:11:39,861 INFO L225 Difference]: With dead ends: 5144 [2019-11-07 04:11:39,862 INFO L226 Difference]: Without dead ends: 3112 [2019-11-07 04:11:39,878 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 239 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-11-07 04:11:39,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3112 states. [2019-11-07 04:11:40,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3112 to 3027. [2019-11-07 04:11:40,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3027 states. [2019-11-07 04:11:40,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3027 states to 3027 states and 4688 transitions. [2019-11-07 04:11:40,229 INFO L78 Accepts]: Start accepts. Automaton has 3027 states and 4688 transitions. Word has length 119 [2019-11-07 04:11:40,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:11:40,231 INFO L462 AbstractCegarLoop]: Abstraction has 3027 states and 4688 transitions. [2019-11-07 04:11:40,232 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 04:11:40,232 INFO L276 IsEmpty]: Start isEmpty. Operand 3027 states and 4688 transitions. [2019-11-07 04:11:40,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-11-07 04:11:40,238 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:11:40,239 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:11:40,446 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:11:40,447 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:11:40,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:11:40,447 INFO L82 PathProgramCache]: Analyzing trace with hash 1651845294, now seen corresponding path program 1 times [2019-11-07 04:11:40,447 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:11:40,448 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641761196] [2019-11-07 04:11:40,448 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:11:40,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:11:40,716 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-11-07 04:11:40,716 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641761196] [2019-11-07 04:11:40,716 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [269168965] [2019-11-07 04:11:40,717 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:11:41,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:11:41,291 INFO L256 TraceCheckSpWp]: Trace formula consists of 2996 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-07 04:11:41,298 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:11:41,402 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-11-07 04:11:41,402 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:11:41,573 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:11:41,699 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-07 04:11:41,699 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 04:11:41,699 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11, 7] total 20 [2019-11-07 04:11:41,700 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212472947] [2019-11-07 04:11:41,701 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 04:11:41,701 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:11:41,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 04:11:41,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2019-11-07 04:11:41,702 INFO L87 Difference]: Start difference. First operand 3027 states and 4688 transitions. Second operand 6 states. [2019-11-07 04:11:42,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:11:42,928 INFO L93 Difference]: Finished difference Result 7950 states and 12529 transitions. [2019-11-07 04:11:42,929 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-07 04:11:42,930 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 120 [2019-11-07 04:11:42,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:11:42,987 INFO L225 Difference]: With dead ends: 7950 [2019-11-07 04:11:42,988 INFO L226 Difference]: Without dead ends: 4954 [2019-11-07 04:11:43,012 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 232 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2019-11-07 04:11:43,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4954 states. [2019-11-07 04:11:43,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4954 to 4918. [2019-11-07 04:11:43,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4918 states. [2019-11-07 04:11:43,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4918 states to 4918 states and 7492 transitions. [2019-11-07 04:11:43,369 INFO L78 Accepts]: Start accepts. Automaton has 4918 states and 7492 transitions. Word has length 120 [2019-11-07 04:11:43,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:11:43,372 INFO L462 AbstractCegarLoop]: Abstraction has 4918 states and 7492 transitions. [2019-11-07 04:11:43,372 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 04:11:43,372 INFO L276 IsEmpty]: Start isEmpty. Operand 4918 states and 7492 transitions. [2019-11-07 04:11:43,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2019-11-07 04:11:43,379 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:11:43,379 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:11:43,589 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:11:43,590 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:11:43,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:11:43,590 INFO L82 PathProgramCache]: Analyzing trace with hash -2036031418, now seen corresponding path program 1 times [2019-11-07 04:11:43,590 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:11:43,591 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378037616] [2019-11-07 04:11:43,591 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:11:43,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:11:43,827 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-11-07 04:11:43,828 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378037616] [2019-11-07 04:11:43,828 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:11:43,828 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-11-07 04:11:43,828 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782423075] [2019-11-07 04:11:43,829 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-07 04:11:43,829 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:11:43,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-07 04:11:43,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-11-07 04:11:43,830 INFO L87 Difference]: Start difference. First operand 4918 states and 7492 transitions. Second operand 10 states. [2019-11-07 04:11:46,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:11:46,796 INFO L93 Difference]: Finished difference Result 17622 states and 27575 transitions. [2019-11-07 04:11:46,797 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-11-07 04:11:46,797 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 125 [2019-11-07 04:11:46,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:11:46,959 INFO L225 Difference]: With dead ends: 17622 [2019-11-07 04:11:46,960 INFO L226 Difference]: Without dead ends: 12735 [2019-11-07 04:11:47,027 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2019-11-07 04:11:47,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12735 states. [2019-11-07 04:11:47,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12735 to 12462. [2019-11-07 04:11:47,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12462 states. [2019-11-07 04:11:47,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12462 states to 12462 states and 19328 transitions. [2019-11-07 04:11:47,802 INFO L78 Accepts]: Start accepts. Automaton has 12462 states and 19328 transitions. Word has length 125 [2019-11-07 04:11:47,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:11:47,803 INFO L462 AbstractCegarLoop]: Abstraction has 12462 states and 19328 transitions. [2019-11-07 04:11:47,803 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-07 04:11:47,803 INFO L276 IsEmpty]: Start isEmpty. Operand 12462 states and 19328 transitions. [2019-11-07 04:11:47,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2019-11-07 04:11:47,806 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:11:47,806 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:11:47,807 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:11:47,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:11:47,807 INFO L82 PathProgramCache]: Analyzing trace with hash 1384513082, now seen corresponding path program 1 times [2019-11-07 04:11:47,807 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:11:47,807 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063008663] [2019-11-07 04:11:47,808 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:11:47,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:11:48,043 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-11-07 04:11:48,044 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063008663] [2019-11-07 04:11:48,045 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2001448243] [2019-11-07 04:11:48,045 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:11:48,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:11:48,667 INFO L256 TraceCheckSpWp]: Trace formula consists of 3026 conjuncts, 21 conjunts are in the unsatisfiable core [2019-11-07 04:11:48,678 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:11:48,825 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-11-07 04:11:48,825 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:11:49,045 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-11-07 04:11:49,046 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 04:11:49,047 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9, 9] total 17 [2019-11-07 04:11:49,047 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308357055] [2019-11-07 04:11:49,047 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 04:11:49,048 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:11:49,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 04:11:49,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2019-11-07 04:11:49,048 INFO L87 Difference]: Start difference. First operand 12462 states and 19328 transitions. Second operand 7 states. [2019-11-07 04:11:52,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:11:52,007 INFO L93 Difference]: Finished difference Result 26186 states and 40588 transitions. [2019-11-07 04:11:52,007 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 04:11:52,007 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 131 [2019-11-07 04:11:52,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:11:52,100 INFO L225 Difference]: With dead ends: 26186 [2019-11-07 04:11:52,100 INFO L226 Difference]: Without dead ends: 13755 [2019-11-07 04:11:52,145 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 255 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2019-11-07 04:11:52,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13755 states. [2019-11-07 04:11:52,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13755 to 13708. [2019-11-07 04:11:52,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13708 states. [2019-11-07 04:11:52,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13708 states to 13708 states and 21011 transitions. [2019-11-07 04:11:52,827 INFO L78 Accepts]: Start accepts. Automaton has 13708 states and 21011 transitions. Word has length 131 [2019-11-07 04:11:52,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:11:52,828 INFO L462 AbstractCegarLoop]: Abstraction has 13708 states and 21011 transitions. [2019-11-07 04:11:52,829 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 04:11:52,829 INFO L276 IsEmpty]: Start isEmpty. Operand 13708 states and 21011 transitions. [2019-11-07 04:11:52,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2019-11-07 04:11:52,832 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:11:52,832 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:11:53,039 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:11:53,039 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:11:53,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:11:53,040 INFO L82 PathProgramCache]: Analyzing trace with hash -1688174385, now seen corresponding path program 1 times [2019-11-07 04:11:53,040 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:11:53,040 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251432077] [2019-11-07 04:11:53,040 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:11:53,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:11:53,249 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-11-07 04:11:53,249 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251432077] [2019-11-07 04:11:53,250 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:11:53,250 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-11-07 04:11:53,250 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732751413] [2019-11-07 04:11:53,251 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-07 04:11:53,251 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:11:53,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-07 04:11:53,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-11-07 04:11:53,251 INFO L87 Difference]: Start difference. First operand 13708 states and 21011 transitions. Second operand 10 states. [2019-11-07 04:11:53,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:11:53,851 INFO L93 Difference]: Finished difference Result 25501 states and 39277 transitions. [2019-11-07 04:11:53,852 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-07 04:11:53,852 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 136 [2019-11-07 04:11:53,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:11:53,952 INFO L225 Difference]: With dead ends: 25501 [2019-11-07 04:11:53,953 INFO L226 Difference]: Without dead ends: 13952 [2019-11-07 04:11:54,007 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-11-07 04:11:54,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13952 states. [2019-11-07 04:11:54,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13952 to 13952. [2019-11-07 04:11:54,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13952 states. [2019-11-07 04:11:54,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13952 states to 13952 states and 21337 transitions. [2019-11-07 04:11:54,665 INFO L78 Accepts]: Start accepts. Automaton has 13952 states and 21337 transitions. Word has length 136 [2019-11-07 04:11:54,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:11:54,665 INFO L462 AbstractCegarLoop]: Abstraction has 13952 states and 21337 transitions. [2019-11-07 04:11:54,666 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-07 04:11:54,666 INFO L276 IsEmpty]: Start isEmpty. Operand 13952 states and 21337 transitions. [2019-11-07 04:11:54,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2019-11-07 04:11:54,670 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:11:54,671 INFO L410 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:11:54,671 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:11:54,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:11:54,671 INFO L82 PathProgramCache]: Analyzing trace with hash -1192482432, now seen corresponding path program 1 times [2019-11-07 04:11:54,672 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:11:54,676 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656048607] [2019-11-07 04:11:54,676 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:11:55,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat