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_spec13_product23.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 03:05:44,436 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 03:05:44,439 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 03:05:44,454 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 03:05:44,455 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 03:05:44,456 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 03:05:44,458 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 03:05:44,460 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 03:05:44,462 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 03:05:44,463 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 03:05:44,464 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 03:05:44,466 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 03:05:44,466 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 03:05:44,468 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 03:05:44,471 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 03:05:44,473 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 03:05:44,475 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 03:05:44,478 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 03:05:44,480 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 03:05:44,487 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 03:05:44,490 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 03:05:44,494 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 03:05:44,495 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 03:05:44,496 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 03:05:44,499 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 03:05:44,500 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 03:05:44,500 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 03:05:44,502 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 03:05:44,503 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 03:05:44,504 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 03:05:44,505 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 03:05:44,505 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 03:05:44,506 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 03:05:44,507 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 03:05:44,509 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 03:05:44,509 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 03:05:44,511 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 03:05:44,511 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 03:05:44,511 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 03:05:44,513 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 03:05:44,516 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 03:05:44,517 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 [2019-10-15 03:05:44,537 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 03:05:44,537 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 03:05:44,539 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 03:05:44,539 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 03:05:44,540 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 03:05:44,540 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 03:05:44,540 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 03:05:44,540 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 03:05:44,540 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 03:05:44,541 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 03:05:44,542 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 03:05:44,542 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 03:05:44,542 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 03:05:44,543 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 03:05:44,543 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 03:05:44,543 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 03:05:44,543 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 03:05:44,543 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 03:05:44,544 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 03:05:44,544 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 03:05:44,544 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 03:05:44,544 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:05:44,544 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 03:05:44,545 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 03:05:44,545 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 03:05:44,545 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 03:05:44,545 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 03:05:44,545 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 03:05:44,545 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 [2019-10-15 03:05:44,868 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 03:05:44,883 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 03:05:44,887 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 03:05:44,889 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 03:05:44,889 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 03:05:44,890 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec13_product23.cil.c [2019-10-15 03:05:44,979 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/905dc1034/b4babd5249e043c09fbd5f3f12fbab94/FLAG3388cb190 [2019-10-15 03:05:45,719 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 03:05:45,721 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec13_product23.cil.c [2019-10-15 03:05:45,786 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/905dc1034/b4babd5249e043c09fbd5f3f12fbab94/FLAG3388cb190 [2019-10-15 03:05:45,896 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/905dc1034/b4babd5249e043c09fbd5f3f12fbab94 [2019-10-15 03:05:45,908 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 03:05:45,910 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 03:05:45,911 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 03:05:45,912 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 03:05:45,916 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 03:05:45,917 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:05:45" (1/1) ... [2019-10-15 03:05:45,920 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35b66671 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:05:45, skipping insertion in model container [2019-10-15 03:05:45,921 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:05:45" (1/1) ... [2019-10-15 03:05:45,929 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 03:05:46,024 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 03:05:47,015 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:05:47,052 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 03:05:47,204 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:05:47,280 INFO L192 MainTranslator]: Completed translation [2019-10-15 03:05:47,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:05:47 WrapperNode [2019-10-15 03:05:47,282 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 03:05:47,283 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 03:05:47,283 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 03:05:47,283 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 03:05:47,301 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:05:47" (1/1) ... [2019-10-15 03:05:47,302 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:05:47" (1/1) ... [2019-10-15 03:05:47,340 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:05:47" (1/1) ... [2019-10-15 03:05:47,340 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:05:47" (1/1) ... [2019-10-15 03:05:47,421 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:05:47" (1/1) ... [2019-10-15 03:05:47,475 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:05:47" (1/1) ... [2019-10-15 03:05:47,489 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:05:47" (1/1) ... [2019-10-15 03:05:47,508 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 03:05:47,508 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 03:05:47,509 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 03:05:47,509 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 03:05:47,514 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:05:47" (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 [2019-10-15 03:05:47,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 03:05:47,692 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 03:05:47,692 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 03:05:47,692 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 03:05:47,693 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 03:05:47,694 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification13_spec__1 [2019-10-15 03:05:47,694 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification13_spec__2 [2019-10-15 03:05:47,695 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-15 03:05:47,695 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-15 03:05:47,695 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-15 03:05:47,695 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-15 03:05:47,696 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-15 03:05:47,697 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-15 03:05:47,697 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-15 03:05:47,697 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-15 03:05:47,697 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-15 03:05:47,700 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-15 03:05:47,700 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-15 03:05:47,700 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-15 03:05:47,701 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-15 03:05:47,701 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-15 03:05:47,702 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-15 03:05:47,702 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-15 03:05:47,702 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-15 03:05:47,702 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-15 03:05:47,703 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2019-10-15 03:05:47,703 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__twothirdsfull [2019-10-15 03:05:47,703 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-15 03:05:47,703 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-15 03:05:47,703 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-15 03:05:47,704 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-10-15 03:05:47,704 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2019-10-15 03:05:47,704 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-15 03:05:47,704 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-15 03:05:47,705 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-15 03:05:47,705 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-15 03:05:47,705 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-15 03:05:47,706 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-15 03:05:47,706 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-10-15 03:05:47,706 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-10-15 03:05:47,706 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-15 03:05:47,706 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-15 03:05:47,707 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-15 03:05:47,707 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-15 03:05:47,707 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-15 03:05:47,707 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-15 03:05:47,707 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-15 03:05:47,707 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-15 03:05:47,708 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-15 03:05:47,708 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-15 03:05:47,708 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-15 03:05:47,708 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-15 03:05:47,708 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-15 03:05:47,709 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-15 03:05:47,709 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-15 03:05:47,709 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-15 03:05:47,709 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-15 03:05:47,710 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 03:05:47,710 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-15 03:05:47,711 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 03:05:47,711 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 03:05:47,711 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 03:05:47,712 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 03:05:47,712 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 03:05:47,712 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 03:05:47,712 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 03:05:47,712 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 03:05:47,713 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 03:05:47,714 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 03:05:47,715 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 03:05:47,715 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-15 03:05:47,715 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-15 03:05:47,716 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-15 03:05:47,717 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-15 03:05:47,717 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-15 03:05:47,717 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-15 03:05:47,718 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-15 03:05:47,718 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-15 03:05:47,719 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 03:05:47,719 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 03:05:47,719 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-15 03:05:47,721 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-15 03:05:47,722 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-15 03:05:47,722 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-15 03:05:47,722 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-15 03:05:47,722 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 03:05:47,723 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 03:05:47,724 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-15 03:05:47,724 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification13_spec__1 [2019-10-15 03:05:47,724 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-15 03:05:47,724 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification13_spec__2 [2019-10-15 03:05:47,726 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-15 03:05:47,726 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-15 03:05:47,726 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-15 03:05:47,726 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-15 03:05:47,727 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-15 03:05:47,727 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-15 03:05:47,727 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-15 03:05:47,727 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-15 03:05:47,727 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-15 03:05:47,728 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 03:05:47,728 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-15 03:05:47,728 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-15 03:05:47,728 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-15 03:05:47,728 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-15 03:05:47,728 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-15 03:05:47,729 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-15 03:05:47,729 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-15 03:05:47,729 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-15 03:05:47,730 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-15 03:05:47,730 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-15 03:05:47,730 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-15 03:05:47,733 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-15 03:05:47,733 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-15 03:05:47,733 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-15 03:05:47,734 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-15 03:05:47,734 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-10-15 03:05:47,735 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-10-15 03:05:47,735 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-15 03:05:47,736 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-15 03:05:47,737 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-15 03:05:47,737 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-15 03:05:47,738 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-15 03:05:47,738 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-15 03:05:47,741 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2019-10-15 03:05:47,741 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__twothirdsfull [2019-10-15 03:05:47,741 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-15 03:05:47,742 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-15 03:05:47,742 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-10-15 03:05:47,743 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2019-10-15 03:05:47,743 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-15 03:05:47,745 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-15 03:05:47,745 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-15 03:05:47,746 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 03:05:47,750 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 03:05:47,750 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-15 03:05:47,751 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-15 03:05:47,751 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-15 03:05:47,752 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-15 03:05:47,752 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-15 03:05:47,752 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-15 03:05:47,753 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-15 03:05:47,753 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-15 03:05:47,754 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-15 03:05:47,763 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 03:05:47,763 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-15 03:05:47,763 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 03:05:47,763 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 03:05:47,763 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 03:05:47,763 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 03:05:47,764 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 03:05:47,764 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 03:05:47,764 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 03:05:47,764 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 03:05:47,764 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 03:05:47,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 03:05:47,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 03:05:47,765 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 03:05:47,765 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 03:05:47,765 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 03:05:47,765 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 03:05:47,766 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 03:05:47,766 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 03:05:47,766 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 03:05:47,766 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 03:05:47,766 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 03:05:47,766 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 03:05:47,766 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-15 03:05:47,766 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 03:05:47,767 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 03:05:47,767 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 03:05:54,429 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 03:05:54,429 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-15 03:05:54,431 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:05:54 BoogieIcfgContainer [2019-10-15 03:05:54,431 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 03:05:54,432 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 03:05:54,432 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 03:05:54,435 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 03:05:54,436 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:05:45" (1/3) ... [2019-10-15 03:05:54,436 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2608a0f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:05:54, skipping insertion in model container [2019-10-15 03:05:54,436 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:05:47" (2/3) ... [2019-10-15 03:05:54,437 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2608a0f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:05:54, skipping insertion in model container [2019-10-15 03:05:54,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:05:54" (3/3) ... [2019-10-15 03:05:54,439 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec13_product23.cil.c [2019-10-15 03:05:54,449 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 03:05:54,459 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 03:05:54,472 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 03:05:54,505 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 03:05:54,505 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 03:05:54,505 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 03:05:54,505 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 03:05:54,506 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 03:05:54,506 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 03:05:54,506 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 03:05:54,506 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 03:05:54,541 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states. [2019-10-15 03:05:54,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2019-10-15 03:05:54,570 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:05:54,572 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-15 03:05:54,575 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:05:54,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:05:54,581 INFO L82 PathProgramCache]: Analyzing trace with hash 302796206, now seen corresponding path program 1 times [2019-10-15 03:05:54,590 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:05:54,591 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957038957] [2019-10-15 03:05:54,591 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:05:54,591 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:05:54,591 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:05:55,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:05:55,484 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-15 03:05:55,485 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957038957] [2019-10-15 03:05:55,486 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1624108447] [2019-10-15 03:05:55,486 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 [2019-10-15 03:05:56,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:05:56,205 INFO L256 TraceCheckSpWp]: Trace formula consists of 2942 conjuncts, 1 conjunts are in the unsatisfiable core [2019-10-15 03:05:56,224 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:05:56,283 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-15 03:05:56,283 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:05:56,605 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-15 03:05:56,606 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 03:05:56,607 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2, 2] total 2 [2019-10-15 03:05:56,607 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570058156] [2019-10-15 03:05:56,615 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 03:05:56,616 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:05:56,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 03:05:56,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 03:05:56,641 INFO L87 Difference]: Start difference. First operand 614 states. Second operand 2 states. [2019-10-15 03:05:56,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:05:56,809 INFO L93 Difference]: Finished difference Result 978 states and 1484 transitions. [2019-10-15 03:05:56,811 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 03:05:56,813 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 133 [2019-10-15 03:05:56,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:05:56,870 INFO L225 Difference]: With dead ends: 978 [2019-10-15 03:05:56,870 INFO L226 Difference]: Without dead ends: 497 [2019-10-15 03:05:56,888 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 267 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 03:05:56,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2019-10-15 03:05:57,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 497. [2019-10-15 03:05:57,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 497 states. [2019-10-15 03:05:57,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 738 transitions. [2019-10-15 03:05:57,097 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 738 transitions. Word has length 133 [2019-10-15 03:05:57,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:05:57,102 INFO L462 AbstractCegarLoop]: Abstraction has 497 states and 738 transitions. [2019-10-15 03:05:57,102 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 03:05:57,103 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 738 transitions. [2019-10-15 03:05:57,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2019-10-15 03:05:57,131 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:05:57,131 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-15 03:05:57,358 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:05:57,358 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:05:57,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:05:57,360 INFO L82 PathProgramCache]: Analyzing trace with hash 2109520046, now seen corresponding path program 1 times [2019-10-15 03:05:57,360 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:05:57,361 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133621019] [2019-10-15 03:05:57,362 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:05:57,362 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:05:57,362 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:05:57,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:05:57,873 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-15 03:05:57,874 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133621019] [2019-10-15 03:05:57,880 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:05:57,880 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 03:05:57,880 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563264723] [2019-10-15 03:05:57,883 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 03:05:57,883 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:05:57,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 03:05:57,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:05:57,884 INFO L87 Difference]: Start difference. First operand 497 states and 738 transitions. Second operand 5 states. [2019-10-15 03:05:59,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:05:59,071 INFO L93 Difference]: Finished difference Result 1417 states and 2145 transitions. [2019-10-15 03:05:59,072 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 03:05:59,072 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 133 [2019-10-15 03:05:59,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:05:59,092 INFO L225 Difference]: With dead ends: 1417 [2019-10-15 03:05:59,095 INFO L226 Difference]: Without dead ends: 957 [2019-10-15 03:05:59,102 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 [2019-10-15 03:05:59,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 957 states. [2019-10-15 03:05:59,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 957 to 949. [2019-10-15 03:05:59,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 949 states. [2019-10-15 03:05:59,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 949 states to 949 states and 1432 transitions. [2019-10-15 03:05:59,214 INFO L78 Accepts]: Start accepts. Automaton has 949 states and 1432 transitions. Word has length 133 [2019-10-15 03:05:59,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:05:59,216 INFO L462 AbstractCegarLoop]: Abstraction has 949 states and 1432 transitions. [2019-10-15 03:05:59,216 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 03:05:59,216 INFO L276 IsEmpty]: Start isEmpty. Operand 949 states and 1432 transitions. [2019-10-15 03:05:59,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2019-10-15 03:05:59,226 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:05:59,227 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-15 03:05:59,227 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:05:59,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:05:59,227 INFO L82 PathProgramCache]: Analyzing trace with hash -1450524096, now seen corresponding path program 1 times [2019-10-15 03:05:59,228 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:05:59,228 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365535256] [2019-10-15 03:05:59,228 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:05:59,228 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:05:59,228 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:05:59,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:05:59,535 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-15 03:05:59,536 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365535256] [2019-10-15 03:05:59,536 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [234010682] [2019-10-15 03:05:59,536 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 [2019-10-15 03:06:00,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:00,236 INFO L256 TraceCheckSpWp]: Trace formula consists of 2953 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-15 03:06:00,249 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:06:00,275 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-15 03:06:00,275 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:06:00,557 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-15 03:06:00,557 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 03:06:00,557 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 5 [2019-10-15 03:06:00,558 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356136021] [2019-10-15 03:06:00,558 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:06:00,559 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:06:00,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:06:00,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:06:00,559 INFO L87 Difference]: Start difference. First operand 949 states and 1432 transitions. Second operand 4 states. [2019-10-15 03:06:00,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:06:00,669 INFO L93 Difference]: Finished difference Result 1873 states and 2859 transitions. [2019-10-15 03:06:00,670 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:06:00,670 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 137 [2019-10-15 03:06:00,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:06:00,683 INFO L225 Difference]: With dead ends: 1873 [2019-10-15 03:06:00,684 INFO L226 Difference]: Without dead ends: 961 [2019-10-15 03:06:00,690 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 274 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2019-10-15 03:06:00,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 961 states. [2019-10-15 03:06:00,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 961 to 961. [2019-10-15 03:06:00,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 961 states. [2019-10-15 03:06:00,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 961 states to 961 states and 1444 transitions. [2019-10-15 03:06:00,771 INFO L78 Accepts]: Start accepts. Automaton has 961 states and 1444 transitions. Word has length 137 [2019-10-15 03:06:00,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:06:00,775 INFO L462 AbstractCegarLoop]: Abstraction has 961 states and 1444 transitions. [2019-10-15 03:06:00,775 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 03:06:00,776 INFO L276 IsEmpty]: Start isEmpty. Operand 961 states and 1444 transitions. [2019-10-15 03:06:00,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2019-10-15 03:06:00,780 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:06:00,781 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-15 03:06:00,993 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:06:00,994 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:06:00,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:06:00,995 INFO L82 PathProgramCache]: Analyzing trace with hash 295639127, now seen corresponding path program 1 times [2019-10-15 03:06:00,996 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:06:00,998 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083597280] [2019-10-15 03:06:01,000 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:01,001 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:01,001 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:06:01,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:01,281 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-10-15 03:06:01,282 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083597280] [2019-10-15 03:06:01,283 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [488531835] [2019-10-15 03:06:01,283 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 [2019-10-15 03:06:02,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:02,069 INFO L256 TraceCheckSpWp]: Trace formula consists of 2958 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-15 03:06:02,083 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:06:02,143 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-10-15 03:06:02,143 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:06:02,334 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-15 03:06:02,334 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 03:06:02,335 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [5] total 8 [2019-10-15 03:06:02,335 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580961473] [2019-10-15 03:06:02,336 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 03:06:02,336 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:06:02,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 03:06:02,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-15 03:06:02,337 INFO L87 Difference]: Start difference. First operand 961 states and 1444 transitions. Second operand 5 states. [2019-10-15 03:06:02,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:06:02,450 INFO L93 Difference]: Finished difference Result 1891 states and 2869 transitions. [2019-10-15 03:06:02,451 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:06:02,451 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 139 [2019-10-15 03:06:02,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:06:02,463 INFO L225 Difference]: With dead ends: 1891 [2019-10-15 03:06:02,463 INFO L226 Difference]: Without dead ends: 959 [2019-10-15 03:06:02,469 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 277 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2019-10-15 03:06:02,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2019-10-15 03:06:02,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 959. [2019-10-15 03:06:02,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 959 states. [2019-10-15 03:06:02,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 959 states to 959 states and 1436 transitions. [2019-10-15 03:06:02,516 INFO L78 Accepts]: Start accepts. Automaton has 959 states and 1436 transitions. Word has length 139 [2019-10-15 03:06:02,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:06:02,517 INFO L462 AbstractCegarLoop]: Abstraction has 959 states and 1436 transitions. [2019-10-15 03:06:02,517 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 03:06:02,517 INFO L276 IsEmpty]: Start isEmpty. Operand 959 states and 1436 transitions. [2019-10-15 03:06:02,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2019-10-15 03:06:02,521 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:06:02,521 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-15 03:06:02,729 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:06:02,730 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:06:02,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:06:02,731 INFO L82 PathProgramCache]: Analyzing trace with hash 2005309906, now seen corresponding path program 1 times [2019-10-15 03:06:02,732 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:06:02,732 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979929851] [2019-10-15 03:06:02,733 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:02,733 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:02,733 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:06:02,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:03,147 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-15 03:06:03,148 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979929851] [2019-10-15 03:06:03,148 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [69787846] [2019-10-15 03:06:03,149 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 [2019-10-15 03:06:03,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:03,736 INFO L256 TraceCheckSpWp]: Trace formula consists of 2962 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-15 03:06:03,743 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:06:03,918 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-15 03:06:03,918 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:06:04,303 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-15 03:06:04,304 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 03:06:04,304 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 6] total 12 [2019-10-15 03:06:04,304 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648804465] [2019-10-15 03:06:04,305 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 03:06:04,305 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:06:04,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 03:06:04,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2019-10-15 03:06:04,306 INFO L87 Difference]: Start difference. First operand 959 states and 1436 transitions. Second operand 5 states. [2019-10-15 03:06:06,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:06:06,124 INFO L93 Difference]: Finished difference Result 2318 states and 3535 transitions. [2019-10-15 03:06:06,125 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 03:06:06,125 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 140 [2019-10-15 03:06:06,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:06:06,141 INFO L225 Difference]: With dead ends: 2318 [2019-10-15 03:06:06,141 INFO L226 Difference]: Without dead ends: 1396 [2019-10-15 03:06:06,150 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 272 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2019-10-15 03:06:06,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1396 states. [2019-10-15 03:06:06,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1396 to 1376. [2019-10-15 03:06:06,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1376 states. [2019-10-15 03:06:06,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1376 states to 1376 states and 2035 transitions. [2019-10-15 03:06:06,255 INFO L78 Accepts]: Start accepts. Automaton has 1376 states and 2035 transitions. Word has length 140 [2019-10-15 03:06:06,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:06:06,258 INFO L462 AbstractCegarLoop]: Abstraction has 1376 states and 2035 transitions. [2019-10-15 03:06:06,258 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 03:06:06,258 INFO L276 IsEmpty]: Start isEmpty. Operand 1376 states and 2035 transitions. [2019-10-15 03:06:06,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2019-10-15 03:06:06,265 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:06:06,265 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-15 03:06:06,478 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:06:06,478 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:06:06,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:06:06,480 INFO L82 PathProgramCache]: Analyzing trace with hash 25610835, now seen corresponding path program 1 times [2019-10-15 03:06:06,480 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:06:06,481 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607409371] [2019-10-15 03:06:06,481 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:06,481 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:06,481 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:06:06,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:06,742 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-10-15 03:06:06,743 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607409371] [2019-10-15 03:06:06,743 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1632725300] [2019-10-15 03:06:06,743 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 [2019-10-15 03:06:07,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:07,310 INFO L256 TraceCheckSpWp]: Trace formula consists of 2963 conjuncts, 16 conjunts are in the unsatisfiable core [2019-10-15 03:06:07,318 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:06:07,426 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-15 03:06:07,427 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:06:07,927 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 6 [2019-10-15 03:06:08,275 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-10-15 03:06:08,276 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 03:06:08,276 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 15 [2019-10-15 03:06:08,276 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685301080] [2019-10-15 03:06:08,277 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:06:08,277 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:06:08,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:06:08,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2019-10-15 03:06:08,278 INFO L87 Difference]: Start difference. First operand 1376 states and 2035 transitions. Second operand 7 states. [2019-10-15 03:06:09,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:06:09,941 INFO L93 Difference]: Finished difference Result 2980 states and 4418 transitions. [2019-10-15 03:06:09,941 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-15 03:06:09,942 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 141 [2019-10-15 03:06:09,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:06:09,961 INFO L225 Difference]: With dead ends: 2980 [2019-10-15 03:06:09,962 INFO L226 Difference]: Without dead ends: 1641 [2019-10-15 03:06:09,975 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 271 SyntacticMatches, 9 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2019-10-15 03:06:09,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1641 states. [2019-10-15 03:06:10,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1641 to 1622. [2019-10-15 03:06:10,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1622 states. [2019-10-15 03:06:10,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1622 states to 1622 states and 2381 transitions. [2019-10-15 03:06:10,092 INFO L78 Accepts]: Start accepts. Automaton has 1622 states and 2381 transitions. Word has length 141 [2019-10-15 03:06:10,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:06:10,093 INFO L462 AbstractCegarLoop]: Abstraction has 1622 states and 2381 transitions. [2019-10-15 03:06:10,093 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 03:06:10,093 INFO L276 IsEmpty]: Start isEmpty. Operand 1622 states and 2381 transitions. [2019-10-15 03:06:10,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2019-10-15 03:06:10,097 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:06:10,098 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 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] [2019-10-15 03:06:10,307 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:06:10,308 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:06:10,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:06:10,309 INFO L82 PathProgramCache]: Analyzing trace with hash -526233702, now seen corresponding path program 1 times [2019-10-15 03:06:10,309 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:06:10,310 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253380635] [2019-10-15 03:06:10,310 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:10,310 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:10,311 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:06:10,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:10,611 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-15 03:06:10,612 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253380635] [2019-10-15 03:06:10,612 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1125043279] [2019-10-15 03:06:10,613 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:06:11,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:11,331 INFO L256 TraceCheckSpWp]: Trace formula consists of 2965 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-15 03:06:11,352 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:06:11,534 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-15 03:06:11,535 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:06:11,734 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-15 03:06:11,735 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 03:06:11,735 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [5] total 8 [2019-10-15 03:06:11,735 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311499347] [2019-10-15 03:06:11,736 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 03:06:11,736 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:06:11,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 03:06:11,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-15 03:06:11,737 INFO L87 Difference]: Start difference. First operand 1622 states and 2381 transitions. Second operand 5 states. [2019-10-15 03:06:11,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:06:11,916 INFO L93 Difference]: Finished difference Result 3226 states and 4793 transitions. [2019-10-15 03:06:11,916 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:06:11,917 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 141 [2019-10-15 03:06:11,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:06:11,938 INFO L225 Difference]: With dead ends: 3226 [2019-10-15 03:06:11,939 INFO L226 Difference]: Without dead ends: 1654 [2019-10-15 03:06:11,951 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 277 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-15 03:06:11,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1654 states. [2019-10-15 03:06:12,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1654 to 1634. [2019-10-15 03:06:12,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1634 states. [2019-10-15 03:06:12,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1634 states to 1634 states and 2393 transitions. [2019-10-15 03:06:12,039 INFO L78 Accepts]: Start accepts. Automaton has 1634 states and 2393 transitions. Word has length 141 [2019-10-15 03:06:12,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:06:12,040 INFO L462 AbstractCegarLoop]: Abstraction has 1634 states and 2393 transitions. [2019-10-15 03:06:12,040 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 03:06:12,040 INFO L276 IsEmpty]: Start isEmpty. Operand 1634 states and 2393 transitions. [2019-10-15 03:06:12,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2019-10-15 03:06:12,044 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:06:12,044 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 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] [2019-10-15 03:06:12,263 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:06:12,263 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:06:12,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:06:12,264 INFO L82 PathProgramCache]: Analyzing trace with hash 517519867, now seen corresponding path program 1 times [2019-10-15 03:06:12,264 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:06:12,265 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579444164] [2019-10-15 03:06:12,265 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:12,265 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:12,265 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:06:12,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:12,527 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-15 03:06:12,527 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579444164] [2019-10-15 03:06:12,528 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1907892060] [2019-10-15 03:06:12,528 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:06:13,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:13,178 INFO L256 TraceCheckSpWp]: Trace formula consists of 2969 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-15 03:06:13,196 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:06:13,279 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-15 03:06:13,280 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:06:13,474 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-15 03:06:13,475 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 03:06:13,475 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2019-10-15 03:06:13,476 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704425014] [2019-10-15 03:06:13,476 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:06:13,477 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:06:13,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:06:13,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-10-15 03:06:13,478 INFO L87 Difference]: Start difference. First operand 1634 states and 2393 transitions. Second operand 4 states. [2019-10-15 03:06:13,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:06:13,977 INFO L93 Difference]: Finished difference Result 3292 states and 4909 transitions. [2019-10-15 03:06:13,978 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 03:06:13,978 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 143 [2019-10-15 03:06:13,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:06:13,993 INFO L225 Difference]: With dead ends: 3292 [2019-10-15 03:06:13,994 INFO L226 Difference]: Without dead ends: 1709 [2019-10-15 03:06:14,005 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 287 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-10-15 03:06:14,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1709 states. [2019-10-15 03:06:14,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1709 to 1691. [2019-10-15 03:06:14,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1691 states. [2019-10-15 03:06:14,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1691 states to 1691 states and 2486 transitions. [2019-10-15 03:06:14,093 INFO L78 Accepts]: Start accepts. Automaton has 1691 states and 2486 transitions. Word has length 143 [2019-10-15 03:06:14,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:06:14,094 INFO L462 AbstractCegarLoop]: Abstraction has 1691 states and 2486 transitions. [2019-10-15 03:06:14,094 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 03:06:14,095 INFO L276 IsEmpty]: Start isEmpty. Operand 1691 states and 2486 transitions. [2019-10-15 03:06:14,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2019-10-15 03:06:14,099 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:06:14,100 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 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] [2019-10-15 03:06:14,321 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:06:14,321 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:06:14,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:06:14,322 INFO L82 PathProgramCache]: Analyzing trace with hash -204798223, now seen corresponding path program 1 times [2019-10-15 03:06:14,322 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:06:14,322 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138811737] [2019-10-15 03:06:14,323 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:14,323 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:14,323 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:06:14,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:14,617 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-15 03:06:14,617 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138811737] [2019-10-15 03:06:14,618 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1889611909] [2019-10-15 03:06:14,618 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:06:15,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:15,480 INFO L256 TraceCheckSpWp]: Trace formula consists of 2971 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-15 03:06:15,496 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:06:15,644 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-15 03:06:15,645 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:06:16,089 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-15 03:06:16,090 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 03:06:16,090 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4, 6] total 10 [2019-10-15 03:06:16,090 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518690655] [2019-10-15 03:06:16,094 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 03:06:16,094 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:06:16,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 03:06:16,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-10-15 03:06:16,095 INFO L87 Difference]: Start difference. First operand 1691 states and 2486 transitions. Second operand 5 states. [2019-10-15 03:06:17,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:06:17,811 INFO L93 Difference]: Finished difference Result 3951 states and 6024 transitions. [2019-10-15 03:06:17,812 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 03:06:17,812 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 145 [2019-10-15 03:06:17,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:06:17,832 INFO L225 Difference]: With dead ends: 3951 [2019-10-15 03:06:17,833 INFO L226 Difference]: Without dead ends: 2770 [2019-10-15 03:06:17,840 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 287 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2019-10-15 03:06:17,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2770 states. [2019-10-15 03:06:17,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2770 to 2705. [2019-10-15 03:06:17,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2705 states. [2019-10-15 03:06:17,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2705 states to 2705 states and 4076 transitions. [2019-10-15 03:06:17,970 INFO L78 Accepts]: Start accepts. Automaton has 2705 states and 4076 transitions. Word has length 145 [2019-10-15 03:06:17,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:06:17,970 INFO L462 AbstractCegarLoop]: Abstraction has 2705 states and 4076 transitions. [2019-10-15 03:06:17,970 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 03:06:17,970 INFO L276 IsEmpty]: Start isEmpty. Operand 2705 states and 4076 transitions. [2019-10-15 03:06:17,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2019-10-15 03:06:17,975 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:06:17,975 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-15 03:06:18,195 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:06:18,195 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:06:18,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:06:18,196 INFO L82 PathProgramCache]: Analyzing trace with hash 1824863963, now seen corresponding path program 1 times [2019-10-15 03:06:18,196 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:06:18,197 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716040544] [2019-10-15 03:06:18,197 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:18,198 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:18,198 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:06:18,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:18,403 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-15 03:06:18,403 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716040544] [2019-10-15 03:06:18,404 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [765838133] [2019-10-15 03:06:18,404 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:06:19,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:19,121 INFO L256 TraceCheckSpWp]: Trace formula consists of 2970 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 03:06:19,127 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:06:19,147 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-15 03:06:19,147 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:06:19,365 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-15 03:06:19,366 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 03:06:19,366 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 6 [2019-10-15 03:06:19,367 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146554851] [2019-10-15 03:06:19,368 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:06:19,368 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:06:19,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:06:19,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-10-15 03:06:19,369 INFO L87 Difference]: Start difference. First operand 2705 states and 4076 transitions. Second operand 4 states. [2019-10-15 03:06:19,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:06:19,573 INFO L93 Difference]: Finished difference Result 5348 states and 8234 transitions. [2019-10-15 03:06:19,573 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 03:06:19,573 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 145 [2019-10-15 03:06:19,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:06:19,596 INFO L225 Difference]: With dead ends: 5348 [2019-10-15 03:06:19,596 INFO L226 Difference]: Without dead ends: 2694 [2019-10-15 03:06:19,615 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 289 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-10-15 03:06:19,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2694 states. [2019-10-15 03:06:19,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2694 to 2607. [2019-10-15 03:06:19,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2607 states. [2019-10-15 03:06:19,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2607 states to 2607 states and 3894 transitions. [2019-10-15 03:06:19,745 INFO L78 Accepts]: Start accepts. Automaton has 2607 states and 3894 transitions. Word has length 145 [2019-10-15 03:06:19,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:06:19,745 INFO L462 AbstractCegarLoop]: Abstraction has 2607 states and 3894 transitions. [2019-10-15 03:06:19,745 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 03:06:19,746 INFO L276 IsEmpty]: Start isEmpty. Operand 2607 states and 3894 transitions. [2019-10-15 03:06:19,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2019-10-15 03:06:19,749 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:06:19,750 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-15 03:06:19,959 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:06:19,960 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:06:19,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:06:19,960 INFO L82 PathProgramCache]: Analyzing trace with hash -1523029652, now seen corresponding path program 1 times [2019-10-15 03:06:19,961 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:06:19,961 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061262681] [2019-10-15 03:06:19,961 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:19,961 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:19,961 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:06:20,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:20,155 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2019-10-15 03:06:20,155 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061262681] [2019-10-15 03:06:20,156 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [323623498] [2019-10-15 03:06:20,156 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true