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_spec9_product27.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 23:05:23,668 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 23:05:23,671 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 23:05:23,686 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 23:05:23,687 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 23:05:23,688 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 23:05:23,690 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 23:05:23,699 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 23:05:23,704 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 23:05:23,708 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 23:05:23,709 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 23:05:23,711 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 23:05:23,711 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 23:05:23,713 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 23:05:23,716 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 23:05:23,717 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 23:05:23,719 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 23:05:23,720 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 23:05:23,721 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 23:05:23,727 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 23:05:23,731 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 23:05:23,734 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 23:05:23,736 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 23:05:23,737 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 23:05:23,740 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 23:05:23,740 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 23:05:23,740 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 23:05:23,742 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 23:05:23,744 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 23:05:23,744 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 23:05:23,745 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 23:05:23,747 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 23:05:23,748 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 23:05:23,749 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 23:05:23,750 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 23:05:23,750 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 23:05:23,751 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 23:05:23,751 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 23:05:23,751 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 23:05:23,752 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 23:05:23,753 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 23:05:23,754 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 23:05:23,786 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 23:05:23,786 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 23:05:23,787 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 23:05:23,788 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 23:05:23,788 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 23:05:23,788 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 23:05:23,788 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 23:05:23,789 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 23:05:23,789 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 23:05:23,789 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 23:05:23,789 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 23:05:23,789 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 23:05:23,790 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 23:05:23,790 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 23:05:23,790 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 23:05:23,790 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 23:05:23,790 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 23:05:23,791 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 23:05:23,791 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 23:05:23,791 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 23:05:23,791 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 23:05:23,791 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:05:23,792 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 23:05:23,792 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 23:05:23,792 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 23:05:23,792 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 23:05:23,792 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 23:05:23,793 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 23:05:23,793 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-13 23:05:24,076 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 23:05:24,089 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 23:05:24,093 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 23:05:24,094 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 23:05:24,095 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 23:05:24,095 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec9_product27.cil.c [2019-10-13 23:05:24,157 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/59f4b531e/d918838c72584984975eaeedad898f3b/FLAGd23b2e5a6 [2019-10-13 23:05:24,799 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 23:05:24,801 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec9_product27.cil.c [2019-10-13 23:05:24,833 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/59f4b531e/d918838c72584984975eaeedad898f3b/FLAGd23b2e5a6 [2019-10-13 23:05:25,045 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/59f4b531e/d918838c72584984975eaeedad898f3b [2019-10-13 23:05:25,055 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 23:05:25,057 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 23:05:25,057 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 23:05:25,057 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 23:05:25,061 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 23:05:25,061 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:05:25" (1/1) ... [2019-10-13 23:05:25,064 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b48f646 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:05:25, skipping insertion in model container [2019-10-13 23:05:25,065 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:05:25" (1/1) ... [2019-10-13 23:05:25,072 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 23:05:25,150 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 23:05:25,848 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:05:25,879 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 23:05:26,070 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:05:26,162 INFO L192 MainTranslator]: Completed translation [2019-10-13 23:05:26,163 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:05:26 WrapperNode [2019-10-13 23:05:26,163 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 23:05:26,164 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 23:05:26,164 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 23:05:26,164 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 23:05:26,179 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:05:26" (1/1) ... [2019-10-13 23:05:26,179 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:05:26" (1/1) ... [2019-10-13 23:05:26,227 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:05:26" (1/1) ... [2019-10-13 23:05:26,228 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:05:26" (1/1) ... [2019-10-13 23:05:26,295 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:05:26" (1/1) ... [2019-10-13 23:05:26,331 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:05:26" (1/1) ... [2019-10-13 23:05:26,354 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:05:26" (1/1) ... [2019-10-13 23:05:26,374 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 23:05:26,375 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 23:05:26,375 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 23:05:26,375 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 23:05:26,376 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:05:26" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:05:26,458 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 23:05:26,459 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 23:05:26,459 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 23:05:26,459 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 23:05:26,460 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 23:05:26,461 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 23:05:26,461 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 23:05:26,462 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 23:05:26,462 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 23:05:26,462 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-13 23:05:26,463 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-13 23:05:26,464 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-13 23:05:26,464 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-13 23:05:26,464 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-13 23:05:26,464 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-13 23:05:26,465 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-13 23:05:26,467 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-13 23:05:26,467 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-13 23:05:26,468 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-13 23:05:26,468 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 23:05:26,468 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-13 23:05:26,468 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-13 23:05:26,469 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-13 23:05:26,469 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 23:05:26,469 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-13 23:05:26,469 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 23:05:26,469 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 23:05:26,470 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 23:05:26,470 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-13 23:05:26,470 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-13 23:05:26,470 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-13 23:05:26,470 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-13 23:05:26,470 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-13 23:05:26,471 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-13 23:05:26,471 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__weight [2019-10-13 23:05:26,471 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-13 23:05:26,472 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-13 23:05:26,472 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-13 23:05:26,472 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-13 23:05:26,472 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-13 23:05:26,472 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-13 23:05:26,473 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-13 23:05:26,473 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-13 23:05:26,473 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-13 23:05:26,473 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-13 23:05:26,473 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2019-10-13 23:05:26,474 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-13 23:05:26,474 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-13 23:05:26,474 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-13 23:05:26,474 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-13 23:05:26,474 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-13 23:05:26,475 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-13 23:05:26,475 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-13 23:05:26,475 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 23:05:26,475 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-13 23:05:26,475 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-13 23:05:26,475 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-10-13 23:05:26,476 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-10-13 23:05:26,476 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-13 23:05:26,476 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-13 23:05:26,477 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-13 23:05:26,477 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-13 23:05:26,477 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-13 23:05:26,477 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-13 23:05:26,478 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-13 23:05:26,478 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-13 23:05:26,478 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 23:05:26,478 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 23:05:26,478 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification9_spec__1 [2019-10-13 23:05:26,478 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification9_spec__2 [2019-10-13 23:05:26,479 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification9_spec__3 [2019-10-13 23:05:26,479 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification9_spec__4 [2019-10-13 23:05:26,479 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 23:05:26,480 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 23:05:26,480 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 23:05:26,480 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 23:05:26,481 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-13 23:05:26,481 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-13 23:05:26,481 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-13 23:05:26,482 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 23:05:26,482 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 23:05:26,483 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 23:05:26,483 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 23:05:26,483 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 23:05:26,483 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 23:05:26,483 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 23:05:26,484 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 23:05:26,484 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 23:05:26,485 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 23:05:26,485 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 23:05:26,485 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 23:05:26,485 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 23:05:26,485 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 23:05:26,486 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 23:05:26,486 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 23:05:26,486 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 23:05:26,486 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 23:05:26,486 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 23:05:26,486 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-13 23:05:26,487 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-13 23:05:26,487 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 23:05:26,487 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-13 23:05:26,487 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-13 23:05:26,487 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-13 23:05:26,488 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-13 23:05:26,488 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-13 23:05:26,488 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-13 23:05:26,488 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 23:05:26,488 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-13 23:05:26,489 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-13 23:05:26,489 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-13 23:05:26,489 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-13 23:05:26,489 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-13 23:05:26,489 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-13 23:05:26,489 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-13 23:05:26,490 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-13 23:05:26,490 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-13 23:05:26,490 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 23:05:26,491 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-13 23:05:26,491 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-13 23:05:26,491 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-13 23:05:26,492 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 23:05:26,492 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-13 23:05:26,492 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 23:05:26,493 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification9_spec__1 [2019-10-13 23:05:26,494 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification9_spec__4 [2019-10-13 23:05:26,494 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 23:05:26,494 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 23:05:26,494 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 23:05:26,494 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 23:05:26,495 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 23:05:26,495 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 23:05:26,496 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 23:05:26,496 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-13 23:05:26,500 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-13 23:05:26,500 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-13 23:05:26,500 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-13 23:05:26,500 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-13 23:05:26,501 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-13 23:05:26,502 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-13 23:05:26,502 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-13 23:05:26,502 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-13 23:05:26,502 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-13 23:05:26,503 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-13 23:05:26,510 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-13 23:05:26,510 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-13 23:05:26,510 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-13 23:05:26,510 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-10-13 23:05:26,511 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-10-13 23:05:26,511 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-13 23:05:26,511 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-13 23:05:26,512 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__weight [2019-10-13 23:05:26,512 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-13 23:05:26,512 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification9_spec__2 [2019-10-13 23:05:26,513 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-13 23:05:26,513 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-13 23:05:26,513 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-13 23:05:26,513 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-13 23:05:26,513 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2019-10-13 23:05:26,513 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-13 23:05:26,514 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-13 23:05:26,514 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-13 23:05:26,514 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-13 23:05:26,514 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-13 23:05:26,514 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-13 23:05:26,514 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification9_spec__3 [2019-10-13 23:05:26,514 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-13 23:05:26,514 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-13 23:05:26,515 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 23:05:26,515 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 23:05:26,515 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 23:05:26,515 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 23:05:26,515 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 23:05:31,502 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 23:05:31,502 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-13 23:05:31,504 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:05:31 BoogieIcfgContainer [2019-10-13 23:05:31,504 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 23:05:31,505 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 23:05:31,505 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 23:05:31,508 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 23:05:31,509 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:05:25" (1/3) ... [2019-10-13 23:05:31,509 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64e7cd18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:05:31, skipping insertion in model container [2019-10-13 23:05:31,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:05:26" (2/3) ... [2019-10-13 23:05:31,510 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64e7cd18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:05:31, skipping insertion in model container [2019-10-13 23:05:31,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:05:31" (3/3) ... [2019-10-13 23:05:31,512 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec9_product27.cil.c [2019-10-13 23:05:31,522 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 23:05:31,531 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 23:05:31,543 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 23:05:31,574 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 23:05:31,574 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 23:05:31,574 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 23:05:31,575 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 23:05:31,575 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 23:05:31,575 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 23:05:31,575 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 23:05:31,575 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 23:05:31,608 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states. [2019-10-13 23:05:31,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2019-10-13 23:05:31,628 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:31,629 INFO L380 BasicCegarLoop]: trace histogram [3, 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] [2019-10-13 23:05:31,631 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:31,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:31,637 INFO L82 PathProgramCache]: Analyzing trace with hash 770298132, now seen corresponding path program 1 times [2019-10-13 23:05:31,647 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:31,648 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046954006] [2019-10-13 23:05:31,648 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:31,648 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:31,648 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:32,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:32,294 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-13 23:05:32,294 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046954006] [2019-10-13 23:05:32,296 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:05:32,296 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 23:05:32,297 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167745801] [2019-10-13 23:05:32,305 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 23:05:32,305 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:05:32,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 23:05:32,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 23:05:32,323 INFO L87 Difference]: Start difference. First operand 567 states. Second operand 2 states. [2019-10-13 23:05:32,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:05:32,397 INFO L93 Difference]: Finished difference Result 470 states and 694 transitions. [2019-10-13 23:05:32,397 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 23:05:32,405 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 112 [2019-10-13 23:05:32,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:05:32,439 INFO L225 Difference]: With dead ends: 470 [2019-10-13 23:05:32,439 INFO L226 Difference]: Without dead ends: 436 [2019-10-13 23:05:32,448 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 23:05:32,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2019-10-13 23:05:32,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 436. [2019-10-13 23:05:32,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 436 states. [2019-10-13 23:05:32,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 643 transitions. [2019-10-13 23:05:32,550 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 643 transitions. Word has length 112 [2019-10-13 23:05:32,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:05:32,553 INFO L462 AbstractCegarLoop]: Abstraction has 436 states and 643 transitions. [2019-10-13 23:05:32,553 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 23:05:32,553 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 643 transitions. [2019-10-13 23:05:32,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2019-10-13 23:05:32,565 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:32,566 INFO L380 BasicCegarLoop]: trace histogram [3, 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] [2019-10-13 23:05:32,566 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:32,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:32,567 INFO L82 PathProgramCache]: Analyzing trace with hash 1750858834, now seen corresponding path program 1 times [2019-10-13 23:05:32,567 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:32,567 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339376766] [2019-10-13 23:05:32,567 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:32,568 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:32,568 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:32,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:32,934 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-13 23:05:32,934 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339376766] [2019-10-13 23:05:32,935 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:05:32,935 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 23:05:32,935 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57003065] [2019-10-13 23:05:32,937 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 23:05:32,938 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:05:32,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 23:05:32,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:05:32,938 INFO L87 Difference]: Start difference. First operand 436 states and 643 transitions. Second operand 7 states. [2019-10-13 23:05:36,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:05:36,817 INFO L93 Difference]: Finished difference Result 1235 states and 1866 transitions. [2019-10-13 23:05:36,822 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 23:05:36,822 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 113 [2019-10-13 23:05:36,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:05:36,829 INFO L225 Difference]: With dead ends: 1235 [2019-10-13 23:05:36,829 INFO L226 Difference]: Without dead ends: 841 [2019-10-13 23:05:36,836 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-13 23:05:36,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 841 states. [2019-10-13 23:05:36,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 841 to 816. [2019-10-13 23:05:36,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 816 states. [2019-10-13 23:05:36,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 816 states to 816 states and 1229 transitions. [2019-10-13 23:05:36,960 INFO L78 Accepts]: Start accepts. Automaton has 816 states and 1229 transitions. Word has length 113 [2019-10-13 23:05:36,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:05:36,964 INFO L462 AbstractCegarLoop]: Abstraction has 816 states and 1229 transitions. [2019-10-13 23:05:36,964 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 23:05:36,965 INFO L276 IsEmpty]: Start isEmpty. Operand 816 states and 1229 transitions. [2019-10-13 23:05:36,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2019-10-13 23:05:36,974 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:36,975 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:05:36,976 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:36,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:36,976 INFO L82 PathProgramCache]: Analyzing trace with hash -748436286, now seen corresponding path program 1 times [2019-10-13 23:05:36,976 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:36,977 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112618516] [2019-10-13 23:05:36,977 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:36,977 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:36,977 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:37,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:37,276 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-13 23:05:37,277 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112618516] [2019-10-13 23:05:37,277 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:05:37,278 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:05:37,278 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105723008] [2019-10-13 23:05:37,278 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:05:37,279 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:05:37,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:05:37,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:05:37,279 INFO L87 Difference]: Start difference. First operand 816 states and 1229 transitions. Second operand 3 states. [2019-10-13 23:05:37,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:05:37,388 INFO L93 Difference]: Finished difference Result 2322 states and 3567 transitions. [2019-10-13 23:05:37,389 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:05:37,389 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 117 [2019-10-13 23:05:37,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:05:37,403 INFO L225 Difference]: With dead ends: 2322 [2019-10-13 23:05:37,404 INFO L226 Difference]: Without dead ends: 1548 [2019-10-13 23:05:37,411 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:05:37,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1548 states. [2019-10-13 23:05:37,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1548 to 1516. [2019-10-13 23:05:37,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1516 states. [2019-10-13 23:05:37,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1516 states to 1516 states and 2325 transitions. [2019-10-13 23:05:37,533 INFO L78 Accepts]: Start accepts. Automaton has 1516 states and 2325 transitions. Word has length 117 [2019-10-13 23:05:37,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:05:37,536 INFO L462 AbstractCegarLoop]: Abstraction has 1516 states and 2325 transitions. [2019-10-13 23:05:37,536 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:05:37,536 INFO L276 IsEmpty]: Start isEmpty. Operand 1516 states and 2325 transitions. [2019-10-13 23:05:37,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2019-10-13 23:05:37,543 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:37,544 INFO L380 BasicCegarLoop]: trace histogram [3, 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] [2019-10-13 23:05:37,544 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:37,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:37,545 INFO L82 PathProgramCache]: Analyzing trace with hash -1727988114, now seen corresponding path program 1 times [2019-10-13 23:05:37,545 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:37,545 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187863973] [2019-10-13 23:05:37,545 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:37,545 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:37,546 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:37,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:37,767 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-13 23:05:37,767 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187863973] [2019-10-13 23:05:37,768 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:05:37,768 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:05:37,768 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874628562] [2019-10-13 23:05:37,769 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:05:37,769 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:05:37,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:05:37,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:05:37,770 INFO L87 Difference]: Start difference. First operand 1516 states and 2325 transitions. Second operand 3 states. [2019-10-13 23:05:37,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:05:37,941 INFO L93 Difference]: Finished difference Result 4423 states and 6892 transitions. [2019-10-13 23:05:37,941 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:05:37,942 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 118 [2019-10-13 23:05:37,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:05:37,970 INFO L225 Difference]: With dead ends: 4423 [2019-10-13 23:05:37,970 INFO L226 Difference]: Without dead ends: 2950 [2019-10-13 23:05:37,979 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:05:37,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2950 states. [2019-10-13 23:05:38,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2950 to 2917. [2019-10-13 23:05:38,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2917 states. [2019-10-13 23:05:38,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2917 states to 2917 states and 4539 transitions. [2019-10-13 23:05:38,148 INFO L78 Accepts]: Start accepts. Automaton has 2917 states and 4539 transitions. Word has length 118 [2019-10-13 23:05:38,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:05:38,151 INFO L462 AbstractCegarLoop]: Abstraction has 2917 states and 4539 transitions. [2019-10-13 23:05:38,151 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:05:38,151 INFO L276 IsEmpty]: Start isEmpty. Operand 2917 states and 4539 transitions. [2019-10-13 23:05:38,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-10-13 23:05:38,156 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:38,157 INFO L380 BasicCegarLoop]: trace histogram [3, 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] [2019-10-13 23:05:38,157 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:38,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:38,157 INFO L82 PathProgramCache]: Analyzing trace with hash -2029319804, now seen corresponding path program 1 times [2019-10-13 23:05:38,158 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:38,158 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556114381] [2019-10-13 23:05:38,158 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:38,158 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:38,159 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:38,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:38,326 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-13 23:05:38,327 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556114381] [2019-10-13 23:05:38,327 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:05:38,327 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:05:38,327 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724756007] [2019-10-13 23:05:38,328 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:05:38,328 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:05:38,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:05:38,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:05:38,329 INFO L87 Difference]: Start difference. First operand 2917 states and 4539 transitions. Second operand 3 states. [2019-10-13 23:05:38,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:05:38,696 INFO L93 Difference]: Finished difference Result 8626 states and 13653 transitions. [2019-10-13 23:05:38,696 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:05:38,697 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 119 [2019-10-13 23:05:38,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:05:38,752 INFO L225 Difference]: With dead ends: 8626 [2019-10-13 23:05:38,753 INFO L226 Difference]: Without dead ends: 5754 [2019-10-13 23:05:38,772 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:05:38,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5754 states. [2019-10-13 23:05:39,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5754 to 5720. [2019-10-13 23:05:39,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5720 states. [2019-10-13 23:05:39,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5720 states to 5720 states and 9043 transitions. [2019-10-13 23:05:39,190 INFO L78 Accepts]: Start accepts. Automaton has 5720 states and 9043 transitions. Word has length 119 [2019-10-13 23:05:39,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:05:39,191 INFO L462 AbstractCegarLoop]: Abstraction has 5720 states and 9043 transitions. [2019-10-13 23:05:39,191 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:05:39,191 INFO L276 IsEmpty]: Start isEmpty. Operand 5720 states and 9043 transitions. [2019-10-13 23:05:39,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-10-13 23:05:39,195 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:39,196 INFO L380 BasicCegarLoop]: trace histogram [3, 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] [2019-10-13 23:05:39,196 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:39,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:39,197 INFO L82 PathProgramCache]: Analyzing trace with hash 1514303600, now seen corresponding path program 1 times [2019-10-13 23:05:39,197 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:39,197 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373243525] [2019-10-13 23:05:39,197 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:39,198 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:39,198 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:39,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:39,396 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-13 23:05:39,396 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373243525] [2019-10-13 23:05:39,397 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:05:39,397 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:05:39,397 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143370329] [2019-10-13 23:05:39,398 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:05:39,398 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:05:39,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:05:39,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:05:39,399 INFO L87 Difference]: Start difference. First operand 5720 states and 9043 transitions. Second operand 3 states. [2019-10-13 23:05:40,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:05:40,002 INFO L93 Difference]: Finished difference Result 17033 states and 27568 transitions. [2019-10-13 23:05:40,003 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:05:40,003 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 120 [2019-10-13 23:05:40,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:05:40,106 INFO L225 Difference]: With dead ends: 17033 [2019-10-13 23:05:40,107 INFO L226 Difference]: Without dead ends: 11362 [2019-10-13 23:05:40,145 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:05:40,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11362 states. [2019-10-13 23:05:40,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11362 to 11327. [2019-10-13 23:05:40,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11327 states. [2019-10-13 23:05:40,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11327 states to 11327 states and 18327 transitions. [2019-10-13 23:05:40,833 INFO L78 Accepts]: Start accepts. Automaton has 11327 states and 18327 transitions. Word has length 120 [2019-10-13 23:05:40,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:05:40,834 INFO L462 AbstractCegarLoop]: Abstraction has 11327 states and 18327 transitions. [2019-10-13 23:05:40,834 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:05:40,834 INFO L276 IsEmpty]: Start isEmpty. Operand 11327 states and 18327 transitions. [2019-10-13 23:05:40,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2019-10-13 23:05:40,838 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:40,838 INFO L380 BasicCegarLoop]: trace histogram [3, 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] [2019-10-13 23:05:40,839 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:40,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:40,839 INFO L82 PathProgramCache]: Analyzing trace with hash -302516666, now seen corresponding path program 1 times [2019-10-13 23:05:40,839 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:40,840 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451872994] [2019-10-13 23:05:40,840 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:40,840 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:40,840 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:40,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:40,995 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-13 23:05:40,996 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451872994] [2019-10-13 23:05:40,996 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:05:40,996 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:05:40,996 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727947992] [2019-10-13 23:05:40,997 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:05:40,998 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:05:40,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:05:40,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:05:40,999 INFO L87 Difference]: Start difference. First operand 11327 states and 18327 transitions. Second operand 3 states. [2019-10-13 23:05:41,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:05:41,506 INFO L93 Difference]: Finished difference Result 12064 states and 19602 transitions. [2019-10-13 23:05:41,507 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:05:41,507 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 121 [2019-10-13 23:05:41,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:05:41,618 INFO L225 Difference]: With dead ends: 12064 [2019-10-13 23:05:41,618 INFO L226 Difference]: Without dead ends: 12051 [2019-10-13 23:05:41,628 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:05:41,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12051 states. [2019-10-13 23:05:42,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12051 to 12021. [2019-10-13 23:05:42,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12021 states. [2019-10-13 23:05:42,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12021 states to 12021 states and 19540 transitions. [2019-10-13 23:05:42,344 INFO L78 Accepts]: Start accepts. Automaton has 12021 states and 19540 transitions. Word has length 121 [2019-10-13 23:05:42,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:05:42,348 INFO L462 AbstractCegarLoop]: Abstraction has 12021 states and 19540 transitions. [2019-10-13 23:05:42,348 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:05:42,348 INFO L276 IsEmpty]: Start isEmpty. Operand 12021 states and 19540 transitions. [2019-10-13 23:05:42,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2019-10-13 23:05:42,360 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:42,360 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:05:42,360 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:42,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:42,361 INFO L82 PathProgramCache]: Analyzing trace with hash 1945526170, now seen corresponding path program 1 times [2019-10-13 23:05:42,361 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:42,362 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430630276] [2019-10-13 23:05:42,362 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:42,362 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:42,362 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:42,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:43,403 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2019-10-13 23:05:43,403 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430630276] [2019-10-13 23:05:43,403 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:05:43,404 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 23:05:43,404 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394569307] [2019-10-13 23:05:43,405 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 23:05:43,405 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:05:43,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 23:05:43,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 23:05:43,405 INFO L87 Difference]: Start difference. First operand 12021 states and 19540 transitions. Second operand 5 states. [2019-10-13 23:05:43,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:05:43,856 INFO L93 Difference]: Finished difference Result 24186 states and 40014 transitions. [2019-10-13 23:05:43,857 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 23:05:43,857 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 186 [2019-10-13 23:05:43,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:05:43,948 INFO L225 Difference]: With dead ends: 24186 [2019-10-13 23:05:43,949 INFO L226 Difference]: Without dead ends: 12208 [2019-10-13 23:05:44,008 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 23:05:44,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12208 states. [2019-10-13 23:05:44,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12208 to 12205. [2019-10-13 23:05:44,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12205 states. [2019-10-13 23:05:44,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12205 states to 12205 states and 19886 transitions. [2019-10-13 23:05:44,688 INFO L78 Accepts]: Start accepts. Automaton has 12205 states and 19886 transitions. Word has length 186 [2019-10-13 23:05:44,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:05:44,694 INFO L462 AbstractCegarLoop]: Abstraction has 12205 states and 19886 transitions. [2019-10-13 23:05:44,694 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 23:05:44,694 INFO L276 IsEmpty]: Start isEmpty. Operand 12205 states and 19886 transitions. [2019-10-13 23:05:44,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2019-10-13 23:05:44,703 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:44,703 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:05:44,704 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:44,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:44,704 INFO L82 PathProgramCache]: Analyzing trace with hash -690902680, now seen corresponding path program 1 times [2019-10-13 23:05:44,705 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:44,705 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056326408] [2019-10-13 23:05:44,705 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:44,705 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:44,706 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:44,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:45,102 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2019-10-13 23:05:45,102 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056326408] [2019-10-13 23:05:45,102 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [407597610] [2019-10-13 23:05:45,103 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:05:45,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:45,752 INFO L256 TraceCheckSpWp]: Trace formula consists of 3443 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 23:05:45,784 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:05:45,881 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2019-10-13 23:05:45,881 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:05:46,364 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2019-10-13 23:05:46,365 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 23:05:46,365 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 4] total 10 [2019-10-13 23:05:46,365 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731739950] [2019-10-13 23:05:46,367 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 23:05:46,367 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:05:46,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 23:05:46,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-10-13 23:05:46,368 INFO L87 Difference]: Start difference. First operand 12205 states and 19886 transitions. Second operand 4 states. [2019-10-13 23:05:47,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:05:47,493 INFO L93 Difference]: Finished difference Result 25693 states and 43024 transitions. [2019-10-13 23:05:47,494 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 23:05:47,494 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 191 [2019-10-13 23:05:47,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:05:47,601 INFO L225 Difference]: With dead ends: 25693 [2019-10-13 23:05:47,602 INFO L226 Difference]: Without dead ends: 13531 [2019-10-13 23:05:47,649 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 381 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2019-10-13 23:05:47,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13531 states. [2019-10-13 23:05:48,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13531 to 13531. [2019-10-13 23:05:48,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13531 states. [2019-10-13 23:05:48,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13531 states to 13531 states and 22368 transitions. [2019-10-13 23:05:48,463 INFO L78 Accepts]: Start accepts. Automaton has 13531 states and 22368 transitions. Word has length 191 [2019-10-13 23:05:48,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:05:48,464 INFO L462 AbstractCegarLoop]: Abstraction has 13531 states and 22368 transitions. [2019-10-13 23:05:48,464 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 23:05:48,464 INFO L276 IsEmpty]: Start isEmpty. Operand 13531 states and 22368 transitions. [2019-10-13 23:05:48,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2019-10-13 23:05:48,473 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:48,473 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:05:48,688 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:05:48,689 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:48,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:48,690 INFO L82 PathProgramCache]: Analyzing trace with hash -1861989226, now seen corresponding path program 1 times [2019-10-13 23:05:48,690 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:48,691 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562243769] [2019-10-13 23:05:48,691 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:48,691 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:48,691 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:48,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:48,990 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2019-10-13 23:05:48,990 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562243769] [2019-10-13 23:05:48,991 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1667437517] [2019-10-13 23:05:48,991 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:05:49,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:49,758 INFO L256 TraceCheckSpWp]: Trace formula consists of 3448 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 23:05:49,774 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:05:50,015 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-10-13 23:05:50,015 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:05:50,587 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2019-10-13 23:05:50,587 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 23:05:50,588 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 7 [2019-10-13 23:05:50,588 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316002409] [2019-10-13 23:05:50,589 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 23:05:50,589 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:05:50,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 23:05:50,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:05:50,589 INFO L87 Difference]: Start difference. First operand 13531 states and 22368 transitions. Second operand 4 states. [2019-10-13 23:05:51,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:05:51,406 INFO L93 Difference]: Finished difference Result 28345 states and 47954 transitions. [2019-10-13 23:05:51,407 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 23:05:51,407 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 196 [2019-10-13 23:05:51,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:05:51,501 INFO L225 Difference]: With dead ends: 28345 [2019-10-13 23:05:51,502 INFO L226 Difference]: Without dead ends: 14857 [2019-10-13 23:05:51,554 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 397 GetRequests, 389 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-10-13 23:05:51,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14857 states. [2019-10-13 23:05:53,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14857 to 14857. [2019-10-13 23:05:53,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14857 states. [2019-10-13 23:05:53,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14857 states to 14857 states and 24850 transitions. [2019-10-13 23:05:53,137 INFO L78 Accepts]: Start accepts. Automaton has 14857 states and 24850 transitions. Word has length 196 [2019-10-13 23:05:53,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:05:53,141 INFO L462 AbstractCegarLoop]: Abstraction has 14857 states and 24850 transitions. [2019-10-13 23:05:53,141 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 23:05:53,141 INFO L276 IsEmpty]: Start isEmpty. Operand 14857 states and 24850 transitions. [2019-10-13 23:05:53,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2019-10-13 23:05:53,151 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:53,151 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:05:53,368 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:05:53,368 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:53,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:53,369 INFO L82 PathProgramCache]: Analyzing trace with hash 1726833670, now seen corresponding path program 1 times [2019-10-13 23:05:53,369 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:53,369 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925607514] [2019-10-13 23:05:53,369 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:53,369 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:53,370 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:53,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:53,593 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 15 proven. 12 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2019-10-13 23:05:53,594 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925607514] [2019-10-13 23:05:53,594 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1774533682] [2019-10-13 23:05:53,594 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:05:54,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:54,313 INFO L256 TraceCheckSpWp]: Trace formula consists of 3452 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 23:05:54,324 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:05:54,364 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-13 23:05:54,365 INFO L321 TraceCheckSpWp]: Computing backward predicates...