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 0.1.24-13a467a-m [2019-10-15 03:09:55,929 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 03:09:55,934 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 03:09:55,955 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 03:09:55,956 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 03:09:55,958 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 03:09:55,960 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 03:09:55,973 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 03:09:55,975 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 03:09:55,976 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 03:09:55,977 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 03:09:55,979 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 03:09:55,979 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 03:09:55,983 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 03:09:55,986 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 03:09:55,988 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 03:09:55,989 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 03:09:55,992 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 03:09:55,994 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 03:09:56,000 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 03:09:56,005 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 03:09:56,006 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 03:09:56,008 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 03:09:56,008 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 03:09:56,012 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 03:09:56,012 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 03:09:56,012 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 03:09:56,014 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 03:09:56,016 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 03:09:56,017 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 03:09:56,018 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 03:09:56,019 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 03:09:56,019 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 03:09:56,020 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 03:09:56,022 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 03:09:56,023 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 03:09:56,023 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 03:09:56,023 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 03:09:56,024 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 03:09:56,030 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 03:09:56,031 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 03:09:56,032 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-15 03:09:56,067 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 03:09:56,068 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 03:09:56,072 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 03:09:56,073 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 03:09:56,073 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 03:09:56,073 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 03:09:56,074 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 03:09:56,074 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 03:09:56,074 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 03:09:56,074 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 03:09:56,076 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 03:09:56,076 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 03:09:56,077 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 03:09:56,077 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 03:09:56,077 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 03:09:56,078 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 03:09:56,078 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 03:09:56,078 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 03:09:56,078 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 03:09:56,078 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 03:09:56,079 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 03:09:56,079 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:09:56,079 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 03:09:56,079 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 03:09:56,080 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 03:09:56,080 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 03:09:56,080 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 03:09:56,080 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 03:09:56,080 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-15 03:09:56,466 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 03:09:56,492 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 03:09:56,500 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 03:09:56,502 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 03:09:56,502 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 03:09:56,505 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec9_product27.cil.c [2019-10-15 03:09:56,583 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0099da823/ed607da722d849048fd471ba6b34003d/FLAGdb2012349 [2019-10-15 03:09:57,312 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 03:09:57,312 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec9_product27.cil.c [2019-10-15 03:09:57,348 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0099da823/ed607da722d849048fd471ba6b34003d/FLAGdb2012349 [2019-10-15 03:09:57,458 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0099da823/ed607da722d849048fd471ba6b34003d [2019-10-15 03:09:57,471 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 03:09:57,474 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 03:09:57,476 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 03:09:57,476 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 03:09:57,479 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 03:09:57,480 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:09:57" (1/1) ... [2019-10-15 03:09:57,483 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32d8693f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:57, skipping insertion in model container [2019-10-15 03:09:57,484 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:09:57" (1/1) ... [2019-10-15 03:09:57,492 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 03:09:57,592 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 03:09:58,740 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:09:58,786 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 03:09:58,988 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:09:59,066 INFO L192 MainTranslator]: Completed translation [2019-10-15 03:09:59,067 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:59 WrapperNode [2019-10-15 03:09:59,067 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 03:09:59,068 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 03:09:59,068 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 03:09:59,069 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 03:09:59,092 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:59" (1/1) ... [2019-10-15 03:09:59,093 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:59" (1/1) ... [2019-10-15 03:09:59,138 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:59" (1/1) ... [2019-10-15 03:09:59,139 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:59" (1/1) ... [2019-10-15 03:09:59,216 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:59" (1/1) ... [2019-10-15 03:09:59,262 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:59" (1/1) ... [2019-10-15 03:09:59,337 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:59" (1/1) ... [2019-10-15 03:09:59,385 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 03:09:59,389 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 03:09:59,391 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 03:09:59,391 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 03:09:59,398 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:59" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:09:59,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 03:09:59,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 03:09:59,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 03:09:59,683 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 03:09:59,683 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 03:09:59,685 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 03:09:59,685 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 03:09:59,686 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 03:09:59,687 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 03:09:59,689 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-15 03:09:59,690 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-15 03:09:59,695 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-15 03:09:59,696 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-15 03:09:59,696 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-15 03:09:59,699 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-15 03:09:59,703 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-15 03:09:59,712 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-15 03:09:59,714 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-15 03:09:59,715 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-15 03:09:59,716 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-15 03:09:59,717 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-15 03:09:59,717 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-15 03:09:59,718 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-15 03:09:59,721 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-15 03:09:59,722 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-15 03:09:59,722 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 03:09:59,723 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-15 03:09:59,724 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 03:09:59,725 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-15 03:09:59,725 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-15 03:09:59,726 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-15 03:09:59,730 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-15 03:09:59,731 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-15 03:09:59,735 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-15 03:09:59,737 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__weight [2019-10-15 03:09:59,737 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-15 03:09:59,738 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-15 03:09:59,738 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-15 03:09:59,738 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-15 03:09:59,739 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-15 03:09:59,739 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-15 03:09:59,740 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-15 03:09:59,740 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-15 03:09:59,740 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-15 03:09:59,741 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-15 03:09:59,742 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2019-10-15 03:09:59,742 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-15 03:09:59,742 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-15 03:09:59,743 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-15 03:09:59,743 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-15 03:09:59,744 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-15 03:09:59,749 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-15 03:09:59,752 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-15 03:09:59,752 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-15 03:09:59,755 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-15 03:09:59,755 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-15 03:09:59,757 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-10-15 03:09:59,758 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-10-15 03:09:59,759 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-15 03:09:59,760 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-15 03:09:59,761 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-15 03:09:59,761 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-15 03:09:59,761 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-15 03:09:59,761 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-15 03:09:59,762 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-15 03:09:59,762 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-15 03:09:59,762 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 03:09:59,763 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 03:09:59,764 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification9_spec__1 [2019-10-15 03:09:59,764 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification9_spec__2 [2019-10-15 03:09:59,764 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification9_spec__3 [2019-10-15 03:09:59,765 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification9_spec__4 [2019-10-15 03:09:59,765 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 03:09:59,767 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 03:09:59,768 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 03:09:59,768 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 03:09:59,769 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-15 03:09:59,769 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-15 03:09:59,770 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-15 03:09:59,770 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 03:09:59,772 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 03:09:59,774 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 03:09:59,774 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 03:09:59,774 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 03:09:59,775 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 03:09:59,775 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 03:09:59,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 03:09:59,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 03:09:59,776 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 03:09:59,776 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 03:09:59,776 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 03:09:59,776 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 03:09:59,777 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 03:09:59,777 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 03:09:59,778 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 03:09:59,778 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 03:09:59,778 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 03:09:59,778 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 03:09:59,779 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-15 03:09:59,779 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-15 03:09:59,779 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-15 03:09:59,780 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-15 03:09:59,780 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-15 03:09:59,781 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-15 03:09:59,781 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-15 03:09:59,781 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-15 03:09:59,782 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-15 03:09:59,782 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 03:09:59,783 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-15 03:09:59,783 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-15 03:09:59,783 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-15 03:09:59,784 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-15 03:09:59,784 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-15 03:09:59,784 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-15 03:09:59,785 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-15 03:09:59,785 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-15 03:09:59,786 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-15 03:09:59,786 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-15 03:09:59,786 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-15 03:09:59,786 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-15 03:09:59,787 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-15 03:09:59,787 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-15 03:09:59,788 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-15 03:09:59,788 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 03:09:59,789 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification9_spec__1 [2019-10-15 03:09:59,790 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification9_spec__4 [2019-10-15 03:09:59,790 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 03:09:59,791 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-15 03:09:59,791 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 03:09:59,791 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 03:09:59,791 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 03:09:59,792 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 03:09:59,792 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 03:09:59,793 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-15 03:09:59,800 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-15 03:09:59,801 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-15 03:09:59,802 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-15 03:09:59,802 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-15 03:09:59,804 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-15 03:09:59,805 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-15 03:09:59,805 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-15 03:09:59,806 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-15 03:09:59,806 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-15 03:09:59,807 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-15 03:09:59,826 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-15 03:09:59,827 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-15 03:09:59,827 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-15 03:09:59,827 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-10-15 03:09:59,827 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-10-15 03:09:59,827 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-15 03:09:59,827 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-15 03:09:59,828 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__weight [2019-10-15 03:09:59,828 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-15 03:09:59,828 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification9_spec__2 [2019-10-15 03:09:59,828 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-15 03:09:59,830 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-15 03:09:59,831 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-15 03:09:59,831 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-15 03:09:59,831 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2019-10-15 03:09:59,831 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-15 03:09:59,831 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-15 03:09:59,831 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-15 03:09:59,831 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-15 03:09:59,832 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-15 03:09:59,832 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-15 03:09:59,832 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification9_spec__3 [2019-10-15 03:09:59,832 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-15 03:09:59,832 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-15 03:09:59,832 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 03:09:59,832 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 03:09:59,833 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 03:09:59,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 03:09:59,833 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 03:10:06,300 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 03:10:06,301 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-15 03:10:06,302 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:10:06 BoogieIcfgContainer [2019-10-15 03:10:06,303 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 03:10:06,303 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 03:10:06,304 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 03:10:06,306 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 03:10:06,307 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:09:57" (1/3) ... [2019-10-15 03:10:06,308 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a82ae53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:10:06, skipping insertion in model container [2019-10-15 03:10:06,308 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:59" (2/3) ... [2019-10-15 03:10:06,308 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a82ae53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:10:06, skipping insertion in model container [2019-10-15 03:10:06,308 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:10:06" (3/3) ... [2019-10-15 03:10:06,310 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec9_product27.cil.c [2019-10-15 03:10:06,321 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 03:10:06,331 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 03:10:06,344 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 03:10:06,377 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 03:10:06,377 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 03:10:06,377 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 03:10:06,377 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 03:10:06,378 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 03:10:06,378 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 03:10:06,378 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 03:10:06,378 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 03:10:06,416 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states. [2019-10-15 03:10:06,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2019-10-15 03:10:06,441 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:10:06,443 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] [2019-10-15 03:10:06,445 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:10:06,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:10:06,453 INFO L82 PathProgramCache]: Analyzing trace with hash 770298132, now seen corresponding path program 1 times [2019-10-15 03:10:06,463 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:10:06,463 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974351246] [2019-10-15 03:10:06,464 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:06,464 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:06,464 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:10:06,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:10:07,166 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 03:10:07,167 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974351246] [2019-10-15 03:10:07,168 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:10:07,168 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 03:10:07,169 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526074922] [2019-10-15 03:10:07,176 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 03:10:07,176 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:10:07,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 03:10:07,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 03:10:07,198 INFO L87 Difference]: Start difference. First operand 567 states. Second operand 2 states. [2019-10-15 03:10:07,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:10:07,334 INFO L93 Difference]: Finished difference Result 470 states and 694 transitions. [2019-10-15 03:10:07,334 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 03:10:07,337 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 112 [2019-10-15 03:10:07,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:10:07,367 INFO L225 Difference]: With dead ends: 470 [2019-10-15 03:10:07,368 INFO L226 Difference]: Without dead ends: 436 [2019-10-15 03:10:07,373 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 [2019-10-15 03:10:07,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2019-10-15 03:10:07,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 436. [2019-10-15 03:10:07,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 436 states. [2019-10-15 03:10:07,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 643 transitions. [2019-10-15 03:10:07,525 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 643 transitions. Word has length 112 [2019-10-15 03:10:07,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:10:07,530 INFO L462 AbstractCegarLoop]: Abstraction has 436 states and 643 transitions. [2019-10-15 03:10:07,530 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 03:10:07,530 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 643 transitions. [2019-10-15 03:10:07,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2019-10-15 03:10:07,542 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:10:07,542 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] [2019-10-15 03:10:07,543 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:10:07,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:10:07,543 INFO L82 PathProgramCache]: Analyzing trace with hash 1750858834, now seen corresponding path program 1 times [2019-10-15 03:10:07,544 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:10:07,544 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469187192] [2019-10-15 03:10:07,544 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:07,544 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:07,545 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:10:07,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:10:07,973 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 03:10:07,973 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469187192] [2019-10-15 03:10:07,974 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:10:07,974 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 03:10:07,974 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979240408] [2019-10-15 03:10:07,977 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:10:07,977 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:10:07,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:10:07,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:10:07,978 INFO L87 Difference]: Start difference. First operand 436 states and 643 transitions. Second operand 7 states. [2019-10-15 03:10:14,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:10:14,087 INFO L93 Difference]: Finished difference Result 1235 states and 1866 transitions. [2019-10-15 03:10:14,092 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-15 03:10:14,092 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 113 [2019-10-15 03:10:14,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:10:14,101 INFO L225 Difference]: With dead ends: 1235 [2019-10-15 03:10:14,101 INFO L226 Difference]: Without dead ends: 841 [2019-10-15 03:10:14,108 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-15 03:10:14,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 841 states. [2019-10-15 03:10:14,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 841 to 816. [2019-10-15 03:10:14,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 816 states. [2019-10-15 03:10:14,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 816 states to 816 states and 1229 transitions. [2019-10-15 03:10:14,223 INFO L78 Accepts]: Start accepts. Automaton has 816 states and 1229 transitions. Word has length 113 [2019-10-15 03:10:14,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:10:14,224 INFO L462 AbstractCegarLoop]: Abstraction has 816 states and 1229 transitions. [2019-10-15 03:10:14,224 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 03:10:14,225 INFO L276 IsEmpty]: Start isEmpty. Operand 816 states and 1229 transitions. [2019-10-15 03:10:14,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2019-10-15 03:10:14,229 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:10:14,229 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] [2019-10-15 03:10:14,230 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:10:14,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:10:14,232 INFO L82 PathProgramCache]: Analyzing trace with hash -748436286, now seen corresponding path program 1 times [2019-10-15 03:10:14,233 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:10:14,233 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218861440] [2019-10-15 03:10:14,233 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:14,233 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:14,234 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:10:14,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:10:14,525 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 03:10:14,525 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218861440] [2019-10-15 03:10:14,526 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:10:14,526 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 03:10:14,526 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468552434] [2019-10-15 03:10:14,528 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:10:14,529 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:10:14,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:10:14,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:10:14,530 INFO L87 Difference]: Start difference. First operand 816 states and 1229 transitions. Second operand 3 states. [2019-10-15 03:10:14,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:10:14,674 INFO L93 Difference]: Finished difference Result 2322 states and 3567 transitions. [2019-10-15 03:10:14,674 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:10:14,675 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 117 [2019-10-15 03:10:14,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:10:14,695 INFO L225 Difference]: With dead ends: 2322 [2019-10-15 03:10:14,695 INFO L226 Difference]: Without dead ends: 1548 [2019-10-15 03:10:14,701 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 [2019-10-15 03:10:14,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1548 states. [2019-10-15 03:10:14,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1548 to 1516. [2019-10-15 03:10:14,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1516 states. [2019-10-15 03:10:14,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1516 states to 1516 states and 2325 transitions. [2019-10-15 03:10:14,849 INFO L78 Accepts]: Start accepts. Automaton has 1516 states and 2325 transitions. Word has length 117 [2019-10-15 03:10:14,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:10:14,851 INFO L462 AbstractCegarLoop]: Abstraction has 1516 states and 2325 transitions. [2019-10-15 03:10:14,851 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:10:14,852 INFO L276 IsEmpty]: Start isEmpty. Operand 1516 states and 2325 transitions. [2019-10-15 03:10:14,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2019-10-15 03:10:14,859 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:10:14,859 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] [2019-10-15 03:10:14,860 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:10:14,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:10:14,860 INFO L82 PathProgramCache]: Analyzing trace with hash -1727988114, now seen corresponding path program 1 times [2019-10-15 03:10:14,861 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:10:14,861 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373580567] [2019-10-15 03:10:14,861 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:14,861 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:14,861 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:10:14,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:10:15,036 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 03:10:15,037 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373580567] [2019-10-15 03:10:15,037 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:10:15,037 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 03:10:15,038 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331338162] [2019-10-15 03:10:15,038 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:10:15,038 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:10:15,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:10:15,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:10:15,039 INFO L87 Difference]: Start difference. First operand 1516 states and 2325 transitions. Second operand 3 states. [2019-10-15 03:10:15,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:10:15,291 INFO L93 Difference]: Finished difference Result 4423 states and 6892 transitions. [2019-10-15 03:10:15,291 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:10:15,291 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 118 [2019-10-15 03:10:15,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:10:15,315 INFO L225 Difference]: With dead ends: 4423 [2019-10-15 03:10:15,315 INFO L226 Difference]: Without dead ends: 2950 [2019-10-15 03:10:15,322 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 [2019-10-15 03:10:15,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2950 states. [2019-10-15 03:10:15,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2950 to 2917. [2019-10-15 03:10:15,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2917 states. [2019-10-15 03:10:15,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2917 states to 2917 states and 4539 transitions. [2019-10-15 03:10:15,518 INFO L78 Accepts]: Start accepts. Automaton has 2917 states and 4539 transitions. Word has length 118 [2019-10-15 03:10:15,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:10:15,519 INFO L462 AbstractCegarLoop]: Abstraction has 2917 states and 4539 transitions. [2019-10-15 03:10:15,519 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:10:15,520 INFO L276 IsEmpty]: Start isEmpty. Operand 2917 states and 4539 transitions. [2019-10-15 03:10:15,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-10-15 03:10:15,524 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:10:15,524 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] [2019-10-15 03:10:15,525 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:10:15,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:10:15,525 INFO L82 PathProgramCache]: Analyzing trace with hash -2029319804, now seen corresponding path program 1 times [2019-10-15 03:10:15,526 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:10:15,526 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539468081] [2019-10-15 03:10:15,526 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:15,526 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:15,526 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:10:15,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:10:15,702 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 03:10:15,702 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539468081] [2019-10-15 03:10:15,702 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:10:15,703 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 03:10:15,703 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717584434] [2019-10-15 03:10:15,703 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:10:15,704 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:10:15,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:10:15,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:10:15,704 INFO L87 Difference]: Start difference. First operand 2917 states and 4539 transitions. Second operand 3 states. [2019-10-15 03:10:16,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:10:16,057 INFO L93 Difference]: Finished difference Result 8626 states and 13653 transitions. [2019-10-15 03:10:16,057 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:10:16,058 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 119 [2019-10-15 03:10:16,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:10:16,138 INFO L225 Difference]: With dead ends: 8626 [2019-10-15 03:10:16,139 INFO L226 Difference]: Without dead ends: 5754 [2019-10-15 03:10:16,169 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 [2019-10-15 03:10:16,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5754 states. [2019-10-15 03:10:16,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5754 to 5720. [2019-10-15 03:10:16,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5720 states. [2019-10-15 03:10:16,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5720 states to 5720 states and 9043 transitions. [2019-10-15 03:10:16,733 INFO L78 Accepts]: Start accepts. Automaton has 5720 states and 9043 transitions. Word has length 119 [2019-10-15 03:10:16,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:10:16,737 INFO L462 AbstractCegarLoop]: Abstraction has 5720 states and 9043 transitions. [2019-10-15 03:10:16,737 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:10:16,737 INFO L276 IsEmpty]: Start isEmpty. Operand 5720 states and 9043 transitions. [2019-10-15 03:10:16,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-10-15 03:10:16,741 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:10:16,741 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] [2019-10-15 03:10:16,742 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:10:16,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:10:16,742 INFO L82 PathProgramCache]: Analyzing trace with hash 1514303600, now seen corresponding path program 1 times [2019-10-15 03:10:16,742 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:10:16,748 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542984187] [2019-10-15 03:10:16,748 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:16,748 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:16,749 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:10:16,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:10:16,933 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 03:10:16,934 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542984187] [2019-10-15 03:10:16,934 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:10:16,935 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 03:10:16,935 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92323095] [2019-10-15 03:10:16,936 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:10:16,937 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:10:16,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:10:16,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:10:16,938 INFO L87 Difference]: Start difference. First operand 5720 states and 9043 transitions. Second operand 3 states. [2019-10-15 03:10:17,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:10:17,495 INFO L93 Difference]: Finished difference Result 17033 states and 27568 transitions. [2019-10-15 03:10:17,496 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:10:17,496 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 120 [2019-10-15 03:10:17,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:10:17,648 INFO L225 Difference]: With dead ends: 17033 [2019-10-15 03:10:17,648 INFO L226 Difference]: Without dead ends: 11362 [2019-10-15 03:10:17,694 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 [2019-10-15 03:10:17,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11362 states. [2019-10-15 03:10:19,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11362 to 11327. [2019-10-15 03:10:19,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11327 states. [2019-10-15 03:10:19,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11327 states to 11327 states and 18327 transitions. [2019-10-15 03:10:19,138 INFO L78 Accepts]: Start accepts. Automaton has 11327 states and 18327 transitions. Word has length 120 [2019-10-15 03:10:19,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:10:19,139 INFO L462 AbstractCegarLoop]: Abstraction has 11327 states and 18327 transitions. [2019-10-15 03:10:19,139 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:10:19,139 INFO L276 IsEmpty]: Start isEmpty. Operand 11327 states and 18327 transitions. [2019-10-15 03:10:19,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2019-10-15 03:10:19,145 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:10:19,145 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] [2019-10-15 03:10:19,145 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:10:19,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:10:19,146 INFO L82 PathProgramCache]: Analyzing trace with hash -302516666, now seen corresponding path program 1 times [2019-10-15 03:10:19,146 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:10:19,147 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563851711] [2019-10-15 03:10:19,147 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:19,147 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:19,147 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:10:19,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:10:19,348 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 03:10:19,350 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563851711] [2019-10-15 03:10:19,350 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:10:19,351 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 03:10:19,353 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001000316] [2019-10-15 03:10:19,357 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:10:19,358 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:10:19,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:10:19,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:10:19,360 INFO L87 Difference]: Start difference. First operand 11327 states and 18327 transitions. Second operand 3 states. [2019-10-15 03:10:20,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:10:20,041 INFO L93 Difference]: Finished difference Result 12064 states and 19602 transitions. [2019-10-15 03:10:20,042 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:10:20,042 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 121 [2019-10-15 03:10:20,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:10:20,150 INFO L225 Difference]: With dead ends: 12064 [2019-10-15 03:10:20,151 INFO L226 Difference]: Without dead ends: 12051 [2019-10-15 03:10:20,165 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 [2019-10-15 03:10:20,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12051 states. [2019-10-15 03:10:20,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12051 to 12021. [2019-10-15 03:10:20,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12021 states. [2019-10-15 03:10:20,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12021 states to 12021 states and 19540 transitions. [2019-10-15 03:10:20,955 INFO L78 Accepts]: Start accepts. Automaton has 12021 states and 19540 transitions. Word has length 121 [2019-10-15 03:10:20,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:10:20,955 INFO L462 AbstractCegarLoop]: Abstraction has 12021 states and 19540 transitions. [2019-10-15 03:10:20,955 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:10:20,956 INFO L276 IsEmpty]: Start isEmpty. Operand 12021 states and 19540 transitions. [2019-10-15 03:10:20,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2019-10-15 03:10:20,963 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:10:20,964 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] [2019-10-15 03:10:20,964 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:10:20,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:10:20,965 INFO L82 PathProgramCache]: Analyzing trace with hash 1945526170, now seen corresponding path program 1 times [2019-10-15 03:10:20,965 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:10:20,965 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594557999] [2019-10-15 03:10:20,965 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:20,965 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:20,966 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:10:21,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:10:21,174 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2019-10-15 03:10:21,174 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594557999] [2019-10-15 03:10:21,175 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:10:21,175 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 03:10:21,175 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992689276] [2019-10-15 03:10:21,176 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 03:10:21,176 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:10:21,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 03:10:21,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:10:21,177 INFO L87 Difference]: Start difference. First operand 12021 states and 19540 transitions. Second operand 5 states. [2019-10-15 03:10:21,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:10:21,880 INFO L93 Difference]: Finished difference Result 24186 states and 40014 transitions. [2019-10-15 03:10:21,880 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:10:21,880 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 186 [2019-10-15 03:10:21,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:10:22,003 INFO L225 Difference]: With dead ends: 24186 [2019-10-15 03:10:22,004 INFO L226 Difference]: Without dead ends: 12208 [2019-10-15 03:10:22,080 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 [2019-10-15 03:10:22,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12208 states. [2019-10-15 03:10:22,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12208 to 12205. [2019-10-15 03:10:22,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12205 states. [2019-10-15 03:10:23,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12205 states to 12205 states and 19886 transitions. [2019-10-15 03:10:23,020 INFO L78 Accepts]: Start accepts. Automaton has 12205 states and 19886 transitions. Word has length 186 [2019-10-15 03:10:23,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:10:23,021 INFO L462 AbstractCegarLoop]: Abstraction has 12205 states and 19886 transitions. [2019-10-15 03:10:23,021 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 03:10:23,021 INFO L276 IsEmpty]: Start isEmpty. Operand 12205 states and 19886 transitions. [2019-10-15 03:10:23,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2019-10-15 03:10:23,028 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:10:23,029 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] [2019-10-15 03:10:23,029 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:10:23,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:10:23,030 INFO L82 PathProgramCache]: Analyzing trace with hash -690902680, now seen corresponding path program 1 times [2019-10-15 03:10:23,030 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:10:23,030 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521782102] [2019-10-15 03:10:23,030 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:23,030 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:23,031 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:10:23,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:10:23,268 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2019-10-15 03:10:23,268 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521782102] [2019-10-15 03:10:23,270 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1122766606] [2019-10-15 03:10:23,270 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:10:23,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:10:23,957 INFO L256 TraceCheckSpWp]: Trace formula consists of 3443 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 03:10:24,004 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:10:24,132 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2019-10-15 03:10:24,132 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:10:24,762 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2019-10-15 03:10:24,763 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 03:10:24,763 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 4] total 10 [2019-10-15 03:10:24,763 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420330072] [2019-10-15 03:10:24,764 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:10:24,764 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:10:24,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:10:24,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-10-15 03:10:24,765 INFO L87 Difference]: Start difference. First operand 12205 states and 19886 transitions. Second operand 4 states. [2019-10-15 03:10:26,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:10:26,281 INFO L93 Difference]: Finished difference Result 25693 states and 43024 transitions. [2019-10-15 03:10:26,281 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:10:26,282 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 191 [2019-10-15 03:10:26,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:10:26,409 INFO L225 Difference]: With dead ends: 25693 [2019-10-15 03:10:26,410 INFO L226 Difference]: Without dead ends: 13531 [2019-10-15 03:10:26,472 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 381 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2019-10-15 03:10:26,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13531 states. [2019-10-15 03:10:27,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13531 to 13531. [2019-10-15 03:10:27,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13531 states. [2019-10-15 03:10:27,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13531 states to 13531 states and 22368 transitions. [2019-10-15 03:10:27,492 INFO L78 Accepts]: Start accepts. Automaton has 13531 states and 22368 transitions. Word has length 191 [2019-10-15 03:10:27,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:10:27,493 INFO L462 AbstractCegarLoop]: Abstraction has 13531 states and 22368 transitions. [2019-10-15 03:10:27,493 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 03:10:27,493 INFO L276 IsEmpty]: Start isEmpty. Operand 13531 states and 22368 transitions. [2019-10-15 03:10:27,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2019-10-15 03:10:27,502 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:10:27,503 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] [2019-10-15 03:10:27,722 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:10:27,722 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:10:27,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:10:27,723 INFO L82 PathProgramCache]: Analyzing trace with hash -1861989226, now seen corresponding path program 1 times [2019-10-15 03:10:27,723 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:10:27,723 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886685204] [2019-10-15 03:10:27,723 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:27,723 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:27,724 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:10:27,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:10:27,990 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2019-10-15 03:10:27,990 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886685204] [2019-10-15 03:10:27,991 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1915064572] [2019-10-15 03:10:27,991 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 [2019-10-15 03:10:28,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:10:28,741 INFO L256 TraceCheckSpWp]: Trace formula consists of 3448 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 03:10:28,751 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:10:28,797 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-10-15 03:10:28,798 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:10:29,472 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2019-10-15 03:10:29,473 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 03:10:29,473 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 7 [2019-10-15 03:10:29,473 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248872401] [2019-10-15 03:10:29,475 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:10:29,475 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:10:29,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:10:29,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:10:29,476 INFO L87 Difference]: Start difference. First operand 13531 states and 22368 transitions. Second operand 4 states. [2019-10-15 03:10:30,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:10:30,363 INFO L93 Difference]: Finished difference Result 28345 states and 47954 transitions. [2019-10-15 03:10:30,364 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:10:30,364 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 196 [2019-10-15 03:10:30,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:10:30,452 INFO L225 Difference]: With dead ends: 28345 [2019-10-15 03:10:30,452 INFO L226 Difference]: Without dead ends: 14857 [2019-10-15 03:10:30,484 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 [2019-10-15 03:10:30,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14857 states. [2019-10-15 03:10:31,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14857 to 14857. [2019-10-15 03:10:31,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14857 states. [2019-10-15 03:10:31,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14857 states to 14857 states and 24850 transitions. [2019-10-15 03:10:31,083 INFO L78 Accepts]: Start accepts. Automaton has 14857 states and 24850 transitions. Word has length 196 [2019-10-15 03:10:31,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:10:31,085 INFO L462 AbstractCegarLoop]: Abstraction has 14857 states and 24850 transitions. [2019-10-15 03:10:31,085 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 03:10:31,085 INFO L276 IsEmpty]: Start isEmpty. Operand 14857 states and 24850 transitions. [2019-10-15 03:10:31,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2019-10-15 03:10:31,093 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:10:31,093 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]