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_spec14_product23.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 23:02:22,509 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 23:02:22,512 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 23:02:22,530 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 23:02:22,530 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 23:02:22,532 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 23:02:22,534 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 23:02:22,542 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 23:02:22,548 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 23:02:22,551 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 23:02:22,553 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 23:02:22,553 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 23:02:22,554 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 23:02:22,556 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 23:02:22,558 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 23:02:22,560 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 23:02:22,561 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 23:02:22,562 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 23:02:22,564 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 23:02:22,569 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 23:02:22,573 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 23:02:22,575 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 23:02:22,576 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 23:02:22,577 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 23:02:22,581 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 23:02:22,581 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 23:02:22,581 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 23:02:22,583 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 23:02:22,584 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 23:02:22,585 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 23:02:22,585 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 23:02:22,587 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 23:02:22,588 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 23:02:22,588 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 23:02:22,590 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 23:02:22,590 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 23:02:22,591 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 23:02:22,591 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 23:02:22,591 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 23:02:22,592 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 23:02:22,593 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 23:02:22,594 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 23:02:22,621 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 23:02:22,621 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 23:02:22,622 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 23:02:22,622 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 23:02:22,623 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 23:02:22,623 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 23:02:22,624 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 23:02:22,624 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 23:02:22,624 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 23:02:22,624 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 23:02:22,625 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 23:02:22,626 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 23:02:22,626 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 23:02:22,626 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 23:02:22,626 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 23:02:22,627 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 23:02:22,627 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 23:02:22,627 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 23:02:22,627 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 23:02:22,628 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 23:02:22,628 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 23:02:22,628 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:02:22,628 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 23:02:22,629 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 23:02:22,629 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 23:02:22,630 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 23:02:22,630 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 23:02:22,630 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 23:02:22,630 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 23:02:22,903 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 23:02:22,916 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 23:02:22,920 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 23:02:22,921 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 23:02:22,922 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 23:02:22,922 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec14_product23.cil.c [2019-10-13 23:02:22,991 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/89117e87a/175342993ff343af97d1a71773090aa3/FLAGfa23bb0bb [2019-10-13 23:02:23,660 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 23:02:23,661 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec14_product23.cil.c [2019-10-13 23:02:23,687 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/89117e87a/175342993ff343af97d1a71773090aa3/FLAGfa23bb0bb [2019-10-13 23:02:23,866 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/89117e87a/175342993ff343af97d1a71773090aa3 [2019-10-13 23:02:23,875 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 23:02:23,877 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 23:02:23,878 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 23:02:23,878 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 23:02:23,881 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 23:02:23,882 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:02:23" (1/1) ... [2019-10-13 23:02:23,885 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74752006 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:02:23, skipping insertion in model container [2019-10-13 23:02:23,885 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:02:23" (1/1) ... [2019-10-13 23:02:23,892 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 23:02:23,983 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 23:02:24,728 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:02:24,752 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 23:02:24,887 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:02:24,965 INFO L192 MainTranslator]: Completed translation [2019-10-13 23:02:24,966 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:02:24 WrapperNode [2019-10-13 23:02:24,966 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 23:02:24,967 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 23:02:24,967 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 23:02:24,967 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 23:02:24,981 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:02:24" (1/1) ... [2019-10-13 23:02:24,981 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:02:24" (1/1) ... [2019-10-13 23:02:25,014 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:02:24" (1/1) ... [2019-10-13 23:02:25,014 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:02:24" (1/1) ... [2019-10-13 23:02:25,077 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:02:24" (1/1) ... [2019-10-13 23:02:25,128 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:02:24" (1/1) ... [2019-10-13 23:02:25,154 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:02:24" (1/1) ... [2019-10-13 23:02:25,179 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 23:02:25,182 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 23:02:25,182 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 23:02:25,182 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 23:02:25,184 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:02:24" (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 23:02:25,262 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 23:02:25,262 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 23:02:25,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 23:02:25,263 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-13 23:02:25,263 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-13 23:02:25,264 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-13 23:02:25,265 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-13 23:02:25,265 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-13 23:02:25,265 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-13 23:02:25,265 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-13 23:02:25,266 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-13 23:02:25,267 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 23:02:25,267 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-13 23:02:25,267 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-13 23:02:25,267 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-13 23:02:25,267 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 23:02:25,270 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-13 23:02:25,270 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 23:02:25,270 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 23:02:25,271 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 23:02:25,271 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-13 23:02:25,271 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-13 23:02:25,271 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification14_spec__1 [2019-10-13 23:02:25,272 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 23:02:25,272 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 23:02:25,272 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 23:02:25,272 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 23:02:25,272 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 23:02:25,272 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 23:02:25,273 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 23:02:25,273 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-13 23:02:25,273 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-13 23:02:25,273 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-13 23:02:25,274 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-13 23:02:25,274 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-13 23:02:25,274 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-13 23:02:25,274 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-13 23:02:25,274 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-13 23:02:25,275 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-13 23:02:25,275 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-13 23:02:25,275 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-13 23:02:25,275 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-13 23:02:25,275 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-13 23:02:25,275 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-13 23:02:25,276 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-13 23:02:25,276 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-13 23:02:25,276 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-13 23:02:25,276 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-13 23:02:25,276 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-13 23:02:25,277 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-13 23:02:25,277 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-13 23:02:25,277 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-13 23:02:25,277 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-13 23:02:25,277 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-13 23:02:25,277 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2019-10-13 23:02:25,278 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__twothirdsfull [2019-10-13 23:02:25,278 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-13 23:02:25,278 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-13 23:02:25,278 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-13 23:02:25,279 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-10-13 23:02:25,279 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2019-10-13 23:02:25,279 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-13 23:02:25,279 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-13 23:02:25,280 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-13 23:02:25,280 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 23:02:25,280 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-13 23:02:25,280 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-13 23:02:25,280 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-10-13 23:02:25,280 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-10-13 23:02:25,281 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-13 23:02:25,281 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-13 23:02:25,281 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-13 23:02:25,281 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 23:02:25,282 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 23:02:25,282 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 23:02:25,282 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 23:02:25,283 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 23:02:25,283 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 23:02:25,283 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 23:02:25,284 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 23:02:25,284 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-13 23:02:25,285 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-13 23:02:25,285 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-13 23:02:25,285 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-13 23:02:25,285 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-13 23:02:25,285 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-13 23:02:25,285 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-13 23:02:25,286 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-13 23:02:25,286 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-13 23:02:25,287 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 23:02:25,287 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-13 23:02:25,287 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-13 23:02:25,287 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-13 23:02:25,287 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 23:02:25,288 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-13 23:02:25,288 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-13 23:02:25,288 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-13 23:02:25,288 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-13 23:02:25,288 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-13 23:02:25,288 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 23:02:25,289 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-13 23:02:25,289 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 23:02:25,289 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 23:02:25,289 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 23:02:25,289 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 23:02:25,289 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 23:02:25,290 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 23:02:25,290 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 23:02:25,290 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-13 23:02:25,290 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-13 23:02:25,290 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-13 23:02:25,291 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 23:02:25,291 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-13 23:02:25,291 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-13 23:02:25,291 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-10-13 23:02:25,292 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-10-13 23:02:25,292 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification14_spec__1 [2019-10-13 23:02:25,292 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 23:02:25,292 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 23:02:25,292 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 23:02:25,293 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 23:02:25,293 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 23:02:25,293 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 23:02:25,293 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 23:02:25,295 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 23:02:25,295 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 23:02:25,295 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 23:02:25,295 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 23:02:25,295 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 23:02:25,295 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 23:02:25,296 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 23:02:25,296 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 23:02:25,296 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 23:02:25,297 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 23:02:25,300 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-13 23:02:25,300 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-13 23:02:25,300 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-13 23:02:25,300 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-13 23:02:25,301 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-13 23:02:25,301 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-13 23:02:25,301 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-13 23:02:25,302 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 23:02:25,302 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-13 23:02:25,302 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-13 23:02:25,309 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-13 23:02:25,309 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-13 23:02:25,309 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-13 23:02:25,309 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-13 23:02:25,310 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-13 23:02:25,310 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-13 23:02:25,310 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-13 23:02:25,310 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-13 23:02:25,310 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-13 23:02:25,311 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-13 23:02:25,311 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-13 23:02:25,311 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2019-10-13 23:02:25,311 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__twothirdsfull [2019-10-13 23:02:25,311 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-13 23:02:25,311 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-13 23:02:25,311 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-10-13 23:02:25,311 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2019-10-13 23:02:25,312 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-13 23:02:25,312 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-13 23:02:25,312 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-13 23:02:25,312 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-13 23:02:25,312 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 23:02:25,312 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 23:02:25,312 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 23:02:25,312 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 23:02:30,350 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 23:02:30,351 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-13 23:02:30,353 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:02:30 BoogieIcfgContainer [2019-10-13 23:02:30,353 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 23:02:30,354 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 23:02:30,354 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 23:02:30,358 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 23:02:30,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:02:23" (1/3) ... [2019-10-13 23:02:30,359 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dc21ea9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:02:30, skipping insertion in model container [2019-10-13 23:02:30,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:02:24" (2/3) ... [2019-10-13 23:02:30,360 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dc21ea9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:02:30, skipping insertion in model container [2019-10-13 23:02:30,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:02:30" (3/3) ... [2019-10-13 23:02:30,363 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec14_product23.cil.c [2019-10-13 23:02:30,373 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 23:02:30,383 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 23:02:30,395 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 23:02:30,425 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 23:02:30,426 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 23:02:30,426 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 23:02:30,426 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 23:02:30,426 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 23:02:30,426 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 23:02:30,426 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 23:02:30,426 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 23:02:30,458 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states. [2019-10-13 23:02:30,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2019-10-13 23:02:30,480 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:02:30,482 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:02:30,484 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:02:30,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:02:30,490 INFO L82 PathProgramCache]: Analyzing trace with hash -1590324683, now seen corresponding path program 1 times [2019-10-13 23:02:30,497 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:02:30,498 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916651598] [2019-10-13 23:02:30,498 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:30,498 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:30,498 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:02:30,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:31,218 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-13 23:02:31,219 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916651598] [2019-10-13 23:02:31,220 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:02:31,221 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 23:02:31,221 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933120531] [2019-10-13 23:02:31,228 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 23:02:31,229 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:02:31,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 23:02:31,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 23:02:31,247 INFO L87 Difference]: Start difference. First operand 565 states. Second operand 5 states. [2019-10-13 23:02:32,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:02:32,232 INFO L93 Difference]: Finished difference Result 1297 states and 1945 transitions. [2019-10-13 23:02:32,233 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-13 23:02:32,235 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 110 [2019-10-13 23:02:32,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:02:32,264 INFO L225 Difference]: With dead ends: 1297 [2019-10-13 23:02:32,264 INFO L226 Difference]: Without dead ends: 854 [2019-10-13 23:02:32,275 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-13 23:02:32,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 854 states. [2019-10-13 23:02:32,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 854 to 847. [2019-10-13 23:02:32,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 847 states. [2019-10-13 23:02:32,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 847 states to 847 states and 1260 transitions. [2019-10-13 23:02:32,466 INFO L78 Accepts]: Start accepts. Automaton has 847 states and 1260 transitions. Word has length 110 [2019-10-13 23:02:32,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:02:32,468 INFO L462 AbstractCegarLoop]: Abstraction has 847 states and 1260 transitions. [2019-10-13 23:02:32,468 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 23:02:32,468 INFO L276 IsEmpty]: Start isEmpty. Operand 847 states and 1260 transitions. [2019-10-13 23:02:32,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2019-10-13 23:02:32,483 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:02:32,484 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:02:32,484 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:02:32,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:02:32,486 INFO L82 PathProgramCache]: Analyzing trace with hash -1714167168, now seen corresponding path program 1 times [2019-10-13 23:02:32,486 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:02:32,486 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273901397] [2019-10-13 23:02:32,487 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:32,487 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:32,487 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:02:32,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:32,806 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-13 23:02:32,807 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273901397] [2019-10-13 23:02:32,807 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:02:32,807 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 23:02:32,807 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883641841] [2019-10-13 23:02:32,809 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 23:02:32,810 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:02:32,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 23:02:32,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:02:32,811 INFO L87 Difference]: Start difference. First operand 847 states and 1260 transitions. Second operand 7 states. [2019-10-13 23:02:33,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:02:33,995 INFO L93 Difference]: Finished difference Result 989 states and 1435 transitions. [2019-10-13 23:02:33,996 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 23:02:33,996 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 114 [2019-10-13 23:02:33,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:02:34,006 INFO L225 Difference]: With dead ends: 989 [2019-10-13 23:02:34,006 INFO L226 Difference]: Without dead ends: 986 [2019-10-13 23:02:34,008 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2019-10-13 23:02:34,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 986 states. [2019-10-13 23:02:34,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 986 to 978. [2019-10-13 23:02:34,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 978 states. [2019-10-13 23:02:34,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 978 states to 978 states and 1423 transitions. [2019-10-13 23:02:34,077 INFO L78 Accepts]: Start accepts. Automaton has 978 states and 1423 transitions. Word has length 114 [2019-10-13 23:02:34,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:02:34,078 INFO L462 AbstractCegarLoop]: Abstraction has 978 states and 1423 transitions. [2019-10-13 23:02:34,079 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 23:02:34,079 INFO L276 IsEmpty]: Start isEmpty. Operand 978 states and 1423 transitions. [2019-10-13 23:02:34,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2019-10-13 23:02:34,086 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:02:34,087 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 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] [2019-10-13 23:02:34,087 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:02:34,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:02:34,087 INFO L82 PathProgramCache]: Analyzing trace with hash -1666718681, now seen corresponding path program 1 times [2019-10-13 23:02:34,088 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:02:34,088 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904242592] [2019-10-13 23:02:34,088 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:34,088 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:34,088 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:02:34,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:34,254 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2019-10-13 23:02:34,254 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904242592] [2019-10-13 23:02:34,254 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:02:34,255 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 23:02:34,255 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192361702] [2019-10-13 23:02:34,255 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 23:02:34,256 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:02:34,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 23:02:34,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 23:02:34,256 INFO L87 Difference]: Start difference. First operand 978 states and 1423 transitions. Second operand 5 states. [2019-10-13 23:02:34,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:02:34,344 INFO L93 Difference]: Finished difference Result 1935 states and 2833 transitions. [2019-10-13 23:02:34,345 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 23:02:34,345 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 150 [2019-10-13 23:02:34,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:02:34,359 INFO L225 Difference]: With dead ends: 1935 [2019-10-13 23:02:34,359 INFO L226 Difference]: Without dead ends: 988 [2019-10-13 23:02:34,369 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 23:02:34,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 988 states. [2019-10-13 23:02:34,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 988 to 988. [2019-10-13 23:02:34,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 988 states. [2019-10-13 23:02:34,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 988 states to 988 states and 1433 transitions. [2019-10-13 23:02:34,445 INFO L78 Accepts]: Start accepts. Automaton has 988 states and 1433 transitions. Word has length 150 [2019-10-13 23:02:34,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:02:34,446 INFO L462 AbstractCegarLoop]: Abstraction has 988 states and 1433 transitions. [2019-10-13 23:02:34,446 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 23:02:34,446 INFO L276 IsEmpty]: Start isEmpty. Operand 988 states and 1433 transitions. [2019-10-13 23:02:34,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2019-10-13 23:02:34,453 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:02:34,453 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 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, 1, 1] [2019-10-13 23:02:34,453 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:02:34,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:02:34,454 INFO L82 PathProgramCache]: Analyzing trace with hash -1444399893, now seen corresponding path program 1 times [2019-10-13 23:02:34,454 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:02:34,454 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122505426] [2019-10-13 23:02:34,454 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:34,455 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:34,455 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:02:34,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:34,755 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2019-10-13 23:02:34,755 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122505426] [2019-10-13 23:02:34,756 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [401277181] [2019-10-13 23:02:34,756 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 [2019-10-13 23:02:35,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:35,329 INFO L256 TraceCheckSpWp]: Trace formula consists of 2929 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 23:02:35,349 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:02:35,432 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-13 23:02:35,432 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:02:35,686 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2019-10-13 23:02:35,687 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 23:02:35,687 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 4] total 10 [2019-10-13 23:02:35,688 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924151722] [2019-10-13 23:02:35,689 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 23:02:35,689 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:02:35,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 23:02:35,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-10-13 23:02:35,690 INFO L87 Difference]: Start difference. First operand 988 states and 1433 transitions. Second operand 4 states. [2019-10-13 23:02:36,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:02:36,013 INFO L93 Difference]: Finished difference Result 2023 states and 2999 transitions. [2019-10-13 23:02:36,014 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 23:02:36,014 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 159 [2019-10-13 23:02:36,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:02:36,023 INFO L225 Difference]: With dead ends: 2023 [2019-10-13 23:02:36,023 INFO L226 Difference]: Without dead ends: 1066 [2019-10-13 23:02:36,029 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 317 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2019-10-13 23:02:36,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2019-10-13 23:02:36,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2019-10-13 23:02:36,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1066 states. [2019-10-13 23:02:36,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1579 transitions. [2019-10-13 23:02:36,090 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1579 transitions. Word has length 159 [2019-10-13 23:02:36,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:02:36,091 INFO L462 AbstractCegarLoop]: Abstraction has 1066 states and 1579 transitions. [2019-10-13 23:02:36,091 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 23:02:36,092 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1579 transitions. [2019-10-13 23:02:36,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2019-10-13 23:02:36,101 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:02:36,101 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 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, 1, 1, 1] [2019-10-13 23:02:36,312 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:02:36,313 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:02:36,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:02:36,313 INFO L82 PathProgramCache]: Analyzing trace with hash 2138647978, now seen corresponding path program 1 times [2019-10-13 23:02:36,314 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:02:36,314 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882409241] [2019-10-13 23:02:36,314 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:36,315 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:36,315 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:02:36,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:36,602 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2019-10-13 23:02:36,603 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882409241] [2019-10-13 23:02:36,604 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1474829265] [2019-10-13 23:02:36,604 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 [2019-10-13 23:02:37,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:37,178 INFO L256 TraceCheckSpWp]: Trace formula consists of 2934 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 23:02:37,201 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:02:37,333 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2019-10-13 23:02:37,335 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:02:37,557 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2019-10-13 23:02:37,558 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 23:02:37,558 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 7 [2019-10-13 23:02:37,559 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587750096] [2019-10-13 23:02:37,560 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 23:02:37,561 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:02:37,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 23:02:37,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:02:37,562 INFO L87 Difference]: Start difference. First operand 1066 states and 1579 transitions. Second operand 4 states. [2019-10-13 23:02:37,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:02:37,803 INFO L93 Difference]: Finished difference Result 2179 states and 3289 transitions. [2019-10-13 23:02:37,804 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 23:02:37,804 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 164 [2019-10-13 23:02:37,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:02:37,817 INFO L225 Difference]: With dead ends: 2179 [2019-10-13 23:02:37,817 INFO L226 Difference]: Without dead ends: 1144 [2019-10-13 23:02:37,824 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 325 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-10-13 23:02:37,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1144 states. [2019-10-13 23:02:37,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1144 to 1144. [2019-10-13 23:02:37,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1144 states. [2019-10-13 23:02:37,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1144 states to 1144 states and 1725 transitions. [2019-10-13 23:02:37,890 INFO L78 Accepts]: Start accepts. Automaton has 1144 states and 1725 transitions. Word has length 164 [2019-10-13 23:02:37,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:02:37,891 INFO L462 AbstractCegarLoop]: Abstraction has 1144 states and 1725 transitions. [2019-10-13 23:02:37,892 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 23:02:37,892 INFO L276 IsEmpty]: Start isEmpty. Operand 1144 states and 1725 transitions. [2019-10-13 23:02:37,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2019-10-13 23:02:37,898 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:02:37,899 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 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, 1, 1, 1, 1] [2019-10-13 23:02:38,108 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:02:38,109 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:02:38,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:02:38,110 INFO L82 PathProgramCache]: Analyzing trace with hash -1557122022, now seen corresponding path program 1 times [2019-10-13 23:02:38,110 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:02:38,110 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412134019] [2019-10-13 23:02:38,111 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:38,111 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:38,111 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:02:38,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:38,286 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 15 proven. 12 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2019-10-13 23:02:38,287 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412134019] [2019-10-13 23:02:38,287 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1338297379] [2019-10-13 23:02:38,287 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 [2019-10-13 23:02:39,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:39,031 INFO L256 TraceCheckSpWp]: Trace formula consists of 2938 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 23:02:39,038 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:02:39,080 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-10-13 23:02:39,080 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:02:39,244 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 15 proven. 12 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2019-10-13 23:02:39,245 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 23:02:39,245 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 7 [2019-10-13 23:02:39,245 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600036019] [2019-10-13 23:02:39,246 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 23:02:39,246 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:02:39,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 23:02:39,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:02:39,247 INFO L87 Difference]: Start difference. First operand 1144 states and 1725 transitions. Second operand 4 states. [2019-10-13 23:02:39,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:02:39,465 INFO L93 Difference]: Finished difference Result 2335 states and 3579 transitions. [2019-10-13 23:02:39,465 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 23:02:39,465 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 168 [2019-10-13 23:02:39,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:02:39,474 INFO L225 Difference]: With dead ends: 2335 [2019-10-13 23:02:39,474 INFO L226 Difference]: Without dead ends: 1222 [2019-10-13 23:02:39,481 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 333 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-10-13 23:02:39,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1222 states. [2019-10-13 23:02:39,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1222 to 1222. [2019-10-13 23:02:39,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1222 states. [2019-10-13 23:02:39,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1222 states to 1222 states and 1871 transitions. [2019-10-13 23:02:39,540 INFO L78 Accepts]: Start accepts. Automaton has 1222 states and 1871 transitions. Word has length 168 [2019-10-13 23:02:39,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:02:39,542 INFO L462 AbstractCegarLoop]: Abstraction has 1222 states and 1871 transitions. [2019-10-13 23:02:39,542 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 23:02:39,542 INFO L276 IsEmpty]: Start isEmpty. Operand 1222 states and 1871 transitions. [2019-10-13 23:02:39,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2019-10-13 23:02:39,549 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:02:39,549 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:02:39,759 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:02:39,759 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:02:39,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:02:39,760 INFO L82 PathProgramCache]: Analyzing trace with hash 1094463947, now seen corresponding path program 1 times [2019-10-13 23:02:39,760 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:02:39,760 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352220442] [2019-10-13 23:02:39,761 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:39,761 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:39,761 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:02:39,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:40,030 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2019-10-13 23:02:40,033 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352220442] [2019-10-13 23:02:40,033 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1367767539] [2019-10-13 23:02:40,034 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 [2019-10-13 23:02:40,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:40,636 INFO L256 TraceCheckSpWp]: Trace formula consists of 2941 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 23:02:40,642 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:02:40,680 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-13 23:02:40,680 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:02:40,858 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2019-10-13 23:02:40,859 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 23:02:40,859 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 7 [2019-10-13 23:02:40,859 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467895482] [2019-10-13 23:02:40,860 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 23:02:40,860 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:02:40,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 23:02:40,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:02:40,861 INFO L87 Difference]: Start difference. First operand 1222 states and 1871 transitions. Second operand 4 states. [2019-10-13 23:02:41,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:02:41,086 INFO L93 Difference]: Finished difference Result 2491 states and 3869 transitions. [2019-10-13 23:02:41,086 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 23:02:41,086 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 171 [2019-10-13 23:02:41,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:02:41,096 INFO L225 Difference]: With dead ends: 2491 [2019-10-13 23:02:41,096 INFO L226 Difference]: Without dead ends: 1300 [2019-10-13 23:02:41,101 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 339 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-10-13 23:02:41,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1300 states. [2019-10-13 23:02:41,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1300 to 1300. [2019-10-13 23:02:41,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1300 states. [2019-10-13 23:02:41,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1300 states to 1300 states and 2017 transitions. [2019-10-13 23:02:41,150 INFO L78 Accepts]: Start accepts. Automaton has 1300 states and 2017 transitions. Word has length 171 [2019-10-13 23:02:41,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:02:41,151 INFO L462 AbstractCegarLoop]: Abstraction has 1300 states and 2017 transitions. [2019-10-13 23:02:41,151 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 23:02:41,151 INFO L276 IsEmpty]: Start isEmpty. Operand 1300 states and 2017 transitions. [2019-10-13 23:02:41,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2019-10-13 23:02:41,157 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:02:41,158 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 4, 3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:02:41,369 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:02:41,370 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:02:41,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:02:41,370 INFO L82 PathProgramCache]: Analyzing trace with hash -1761699205, now seen corresponding path program 1 times [2019-10-13 23:02:41,370 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:02:41,371 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926737438] [2019-10-13 23:02:41,371 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:41,371 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:41,371 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:02:41,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:41,539 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2019-10-13 23:02:41,539 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926737438] [2019-10-13 23:02:41,540 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:02:41,540 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 23:02:41,540 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903426189] [2019-10-13 23:02:41,541 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 23:02:41,542 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:02:41,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 23:02:41,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 23:02:41,543 INFO L87 Difference]: Start difference. First operand 1300 states and 2017 transitions. Second operand 4 states. [2019-10-13 23:02:41,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:02:41,764 INFO L93 Difference]: Finished difference Result 2653 states and 4157 transitions. [2019-10-13 23:02:41,765 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 23:02:41,766 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 173 [2019-10-13 23:02:41,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:02:41,775 INFO L225 Difference]: With dead ends: 2653 [2019-10-13 23:02:41,775 INFO L226 Difference]: Without dead ends: 1368 [2019-10-13 23:02:41,782 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 23:02:41,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1368 states. [2019-10-13 23:02:41,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1368 to 1368. [2019-10-13 23:02:41,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1368 states. [2019-10-13 23:02:41,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1368 states to 1368 states and 2053 transitions. [2019-10-13 23:02:41,843 INFO L78 Accepts]: Start accepts. Automaton has 1368 states and 2053 transitions. Word has length 173 [2019-10-13 23:02:41,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:02:41,844 INFO L462 AbstractCegarLoop]: Abstraction has 1368 states and 2053 transitions. [2019-10-13 23:02:41,844 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 23:02:41,844 INFO L276 IsEmpty]: Start isEmpty. Operand 1368 states and 2053 transitions. [2019-10-13 23:02:41,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2019-10-13 23:02:41,850 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:02:41,851 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 5, 4, 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, 1, 1, 1, 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 23:02:41,851 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:02:41,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:02:41,851 INFO L82 PathProgramCache]: Analyzing trace with hash -616958102, now seen corresponding path program 1 times [2019-10-13 23:02:41,852 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:02:41,852 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754967434] [2019-10-13 23:02:41,852 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:41,852 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:41,853 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:02:41,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:42,054 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2019-10-13 23:02:42,055 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754967434] [2019-10-13 23:02:42,055 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:02:42,055 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 23:02:42,058 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626813897] [2019-10-13 23:02:42,058 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 23:02:42,059 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:02:42,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 23:02:42,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:02:42,059 INFO L87 Difference]: Start difference. First operand 1368 states and 2053 transitions. Second operand 7 states. [2019-10-13 23:02:43,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:02:43,093 INFO L93 Difference]: Finished difference Result 2916 states and 4424 transitions. [2019-10-13 23:02:43,093 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-13 23:02:43,094 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 173 [2019-10-13 23:02:43,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:02:43,103 INFO L225 Difference]: With dead ends: 2916 [2019-10-13 23:02:43,103 INFO L226 Difference]: Without dead ends: 1336 [2019-10-13 23:02:43,111 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2019-10-13 23:02:43,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1336 states. [2019-10-13 23:02:43,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1336 to 1320. [2019-10-13 23:02:43,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1320 states. [2019-10-13 23:02:43,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1320 states to 1320 states and 1895 transitions. [2019-10-13 23:02:43,164 INFO L78 Accepts]: Start accepts. Automaton has 1320 states and 1895 transitions. Word has length 173 [2019-10-13 23:02:43,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:02:43,164 INFO L462 AbstractCegarLoop]: Abstraction has 1320 states and 1895 transitions. [2019-10-13 23:02:43,164 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 23:02:43,165 INFO L276 IsEmpty]: Start isEmpty. Operand 1320 states and 1895 transitions. [2019-10-13 23:02:43,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2019-10-13 23:02:43,171 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:02:43,171 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 4, 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, 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 23:02:43,171 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:02:43,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:02:43,172 INFO L82 PathProgramCache]: Analyzing trace with hash -2033924598, now seen corresponding path program 1 times [2019-10-13 23:02:43,172 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:02:43,172 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685814575] [2019-10-13 23:02:43,172 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:43,172 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:43,173 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:02:43,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:43,693 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 22 proven. 8 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2019-10-13 23:02:43,694 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685814575] [2019-10-13 23:02:43,694 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1201255942] [2019-10-13 23:02:43,694 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 [2019-10-13 23:02:44,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:44,270 INFO L256 TraceCheckSpWp]: Trace formula consists of 2944 conjuncts, 74 conjunts are in the unsatisfiable core [2019-10-13 23:02:44,283 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:02:45,219 WARN L191 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 36 [2019-10-13 23:02:45,419 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2019-10-13 23:02:45,420 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:02:45,882 WARN L191 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 43 [2019-10-13 23:02:46,128 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:02:46,129 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:02:46,130 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:02:46,131 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:02:46,132 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:02:46,132 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 6 terms [2019-10-13 23:02:46,393 WARN L191 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 35 [2019-10-13 23:02:46,978 WARN L191 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 43 [2019-10-13 23:02:47,035 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:02:47,036 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:02:47,037 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:02:47,038 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 6 terms [2019-10-13 23:02:47,038 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:02:47,039 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:02:47,120 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:02:47,122 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:02:47,122 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:02:47,123 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:02:47,124 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms