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_product31.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 23:05:31,049 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 23:05:31,051 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 23:05:31,071 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 23:05:31,071 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 23:05:31,074 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 23:05:31,076 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 23:05:31,078 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 23:05:31,080 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 23:05:31,081 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 23:05:31,082 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 23:05:31,083 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 23:05:31,083 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 23:05:31,085 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 23:05:31,086 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 23:05:31,087 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 23:05:31,088 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 23:05:31,089 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 23:05:31,091 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 23:05:31,093 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 23:05:31,097 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 23:05:31,098 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 23:05:31,099 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 23:05:31,100 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 23:05:31,104 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 23:05:31,104 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 23:05:31,106 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 23:05:31,107 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 23:05:31,107 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 23:05:31,108 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 23:05:31,108 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 23:05:31,109 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 23:05:31,112 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 23:05:31,114 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 23:05:31,118 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 23:05:31,119 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 23:05:31,119 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 23:05:31,120 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 23:05:31,120 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 23:05:31,122 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 23:05:31,126 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 23:05:31,127 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 23:05:31,148 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 23:05:31,149 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 23:05:31,150 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 23:05:31,150 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 23:05:31,150 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 23:05:31,151 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 23:05:31,151 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 23:05:31,151 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 23:05:31,151 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 23:05:31,152 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 23:05:31,152 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 23:05:31,152 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 23:05:31,152 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 23:05:31,152 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 23:05:31,153 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 23:05:31,153 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 23:05:31,153 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 23:05:31,153 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 23:05:31,154 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 23:05:31,154 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 23:05:31,154 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 23:05:31,154 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:05:31,154 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 23:05:31,155 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 23:05:31,155 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 23:05:31,155 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 23:05:31,155 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 23:05:31,155 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 23:05:31,156 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 23:05:31,442 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 23:05:31,459 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 23:05:31,463 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 23:05:31,464 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 23:05:31,465 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 23:05:31,466 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec9_product31.cil.c [2019-10-13 23:05:31,534 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/973139131/9d8932f16c284ea1955204bbbcede704/FLAGa9740fd1e [2019-10-13 23:05:32,241 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 23:05:32,242 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec9_product31.cil.c [2019-10-13 23:05:32,262 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/973139131/9d8932f16c284ea1955204bbbcede704/FLAGa9740fd1e [2019-10-13 23:05:32,357 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/973139131/9d8932f16c284ea1955204bbbcede704 [2019-10-13 23:05:32,368 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 23:05:32,370 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 23:05:32,371 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 23:05:32,371 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 23:05:32,375 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 23:05:32,376 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:05:32" (1/1) ... [2019-10-13 23:05:32,378 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d4fe27d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:05:32, skipping insertion in model container [2019-10-13 23:05:32,379 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:05:32" (1/1) ... [2019-10-13 23:05:32,387 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 23:05:32,476 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 23:05:33,236 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:05:33,260 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 23:05:33,388 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:05:33,465 INFO L192 MainTranslator]: Completed translation [2019-10-13 23:05:33,466 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:05:33 WrapperNode [2019-10-13 23:05:33,466 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 23:05:33,467 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 23:05:33,467 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 23:05:33,467 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 23:05:33,481 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:05:33" (1/1) ... [2019-10-13 23:05:33,481 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:05:33" (1/1) ... [2019-10-13 23:05:33,513 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:05:33" (1/1) ... [2019-10-13 23:05:33,514 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:05:33" (1/1) ... [2019-10-13 23:05:33,578 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:05:33" (1/1) ... [2019-10-13 23:05:33,611 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:05:33" (1/1) ... [2019-10-13 23:05:33,624 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:05:33" (1/1) ... [2019-10-13 23:05:33,642 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 23:05:33,642 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 23:05:33,643 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 23:05:33,643 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 23:05:33,644 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:05:33" (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 23:05:33,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 23:05:33,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 23:05:33,736 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 23:05:33,736 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-13 23:05:33,736 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-13 23:05:33,737 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-13 23:05:33,738 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 23:05:33,738 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-13 23:05:33,738 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-13 23:05:33,739 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 23:05:33,739 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-13 23:05:33,740 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-13 23:05:33,740 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-13 23:05:33,740 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-13 23:05:33,741 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-13 23:05:33,741 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-13 23:05:33,743 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-13 23:05:33,743 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-13 23:05:33,743 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification9_spec__1 [2019-10-13 23:05:33,744 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification9_spec__2 [2019-10-13 23:05:33,744 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification9_spec__3 [2019-10-13 23:05:33,744 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification9_spec__4 [2019-10-13 23:05:33,744 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-13 23:05:33,745 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-13 23:05:33,745 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-13 23:05:33,745 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-13 23:05:33,745 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-13 23:05:33,745 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-13 23:05:33,746 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__weight [2019-10-13 23:05:33,746 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-13 23:05:33,746 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-13 23:05:33,746 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-13 23:05:33,747 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-13 23:05:33,747 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-13 23:05:33,747 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-13 23:05:33,748 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-13 23:05:33,748 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-13 23:05:33,748 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-13 23:05:33,748 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-13 23:05:33,748 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2019-10-13 23:05:33,749 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__twothirdsfull [2019-10-13 23:05:33,749 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-13 23:05:33,749 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-13 23:05:33,749 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-13 23:05:33,749 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-13 23:05:33,749 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2019-10-13 23:05:33,750 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-13 23:05:33,750 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-13 23:05:33,750 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-13 23:05:33,750 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 23:05:33,750 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-13 23:05:33,751 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-13 23:05:33,751 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-10-13 23:05:33,751 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-10-13 23:05:33,751 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 23:05:33,751 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 23:05:33,751 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 23:05:33,752 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 23:05:33,752 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 23:05:33,752 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 23:05:33,753 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 23:05:33,753 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 23:05:33,753 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 23:05:33,754 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 23:05:33,754 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-13 23:05:33,754 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-13 23:05:33,754 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-13 23:05:33,754 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-13 23:05:33,755 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-13 23:05:33,755 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-13 23:05:33,755 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-13 23:05:33,755 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-13 23:05:33,755 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 23:05:33,756 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-13 23:05:33,756 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-13 23:05:33,756 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-13 23:05:33,757 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 23:05:33,757 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-13 23:05:33,757 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 23:05:33,758 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 23:05:33,758 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 23:05:33,759 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 23:05:33,759 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 23:05:33,759 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-13 23:05:33,759 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-13 23:05:33,760 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-13 23:05:33,760 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-13 23:05:33,761 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 23:05:33,761 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 23:05:33,761 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-13 23:05:33,761 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 23:05:33,761 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-13 23:05:33,762 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-13 23:05:33,762 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-13 23:05:33,762 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-13 23:05:33,762 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-13 23:05:33,762 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-13 23:05:33,762 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 23:05:33,763 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-13 23:05:33,763 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-13 23:05:33,763 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-13 23:05:33,763 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-13 23:05:33,763 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-13 23:05:33,763 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-13 23:05:33,764 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-13 23:05:33,764 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-13 23:05:33,764 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-13 23:05:33,764 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-13 23:05:33,764 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification9_spec__1 [2019-10-13 23:05:33,764 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification9_spec__2 [2019-10-13 23:05:33,765 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification9_spec__3 [2019-10-13 23:05:33,765 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification9_spec__4 [2019-10-13 23:05:33,765 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 23:05:33,765 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-13 23:05:33,765 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-13 23:05:33,765 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-13 23:05:33,766 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-13 23:05:33,766 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-10-13 23:05:33,766 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-10-13 23:05:33,767 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-13 23:05:33,767 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-13 23:05:33,767 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__weight [2019-10-13 23:05:33,767 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-13 23:05:33,768 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-13 23:05:33,769 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-13 23:05:33,769 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-13 23:05:33,769 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-13 23:05:33,770 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2019-10-13 23:05:33,770 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__twothirdsfull [2019-10-13 23:05:33,770 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-13 23:05:33,770 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-13 23:05:33,771 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-13 23:05:33,771 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2019-10-13 23:05:33,772 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-13 23:05:33,775 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-13 23:05:33,775 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-13 23:05:33,775 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 23:05:33,776 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-13 23:05:33,776 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 23:05:33,776 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 23:05:33,777 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 23:05:33,777 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 23:05:33,777 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 23:05:33,778 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 23:05:33,784 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 23:05:33,785 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 23:05:33,785 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 23:05:33,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 23:05:33,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 23:05:33,785 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 23:05:33,785 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 23:05:33,786 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 23:05:33,786 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 23:05:33,786 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 23:05:33,787 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 23:05:33,788 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 23:05:33,788 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 23:05:33,788 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 23:05:33,788 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 23:05:33,788 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-13 23:05:33,788 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-13 23:05:33,789 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-13 23:05:33,789 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-13 23:05:33,789 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-13 23:05:33,789 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-13 23:05:33,789 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-13 23:05:33,789 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-13 23:05:33,790 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-13 23:05:33,790 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-13 23:05:33,790 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 23:05:33,790 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-13 23:05:33,790 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 23:05:33,790 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 23:05:33,790 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 23:05:33,791 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 23:05:33,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 23:05:33,791 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 23:05:38,701 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 23:05:38,701 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-13 23:05:38,703 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:05:38 BoogieIcfgContainer [2019-10-13 23:05:38,703 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 23:05:38,704 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 23:05:38,705 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 23:05:38,707 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 23:05:38,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:05:32" (1/3) ... [2019-10-13 23:05:38,708 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ce0827b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:05:38, skipping insertion in model container [2019-10-13 23:05:38,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:05:33" (2/3) ... [2019-10-13 23:05:38,709 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ce0827b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:05:38, skipping insertion in model container [2019-10-13 23:05:38,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:05:38" (3/3) ... [2019-10-13 23:05:38,711 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec9_product31.cil.c [2019-10-13 23:05:38,720 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 23:05:38,729 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 23:05:38,740 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 23:05:38,769 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 23:05:38,769 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 23:05:38,769 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 23:05:38,769 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 23:05:38,770 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 23:05:38,770 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 23:05:38,770 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 23:05:38,770 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 23:05:38,801 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states. [2019-10-13 23:05:38,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2019-10-13 23:05:38,821 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:38,822 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 23:05:38,824 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:38,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:38,830 INFO L82 PathProgramCache]: Analyzing trace with hash 1503407421, now seen corresponding path program 1 times [2019-10-13 23:05:38,840 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:38,841 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020382362] [2019-10-13 23:05:38,841 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:38,841 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:38,842 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:39,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:39,520 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 23:05:39,520 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020382362] [2019-10-13 23:05:39,521 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:05:39,522 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 23:05:39,522 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852611375] [2019-10-13 23:05:39,527 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 23:05:39,527 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:05:39,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 23:05:39,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 23:05:39,544 INFO L87 Difference]: Start difference. First operand 592 states. Second operand 2 states. [2019-10-13 23:05:39,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:05:39,618 INFO L93 Difference]: Finished difference Result 495 states and 726 transitions. [2019-10-13 23:05:39,618 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 23:05:39,622 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 112 [2019-10-13 23:05:39,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:05:39,668 INFO L225 Difference]: With dead ends: 495 [2019-10-13 23:05:39,669 INFO L226 Difference]: Without dead ends: 461 [2019-10-13 23:05:39,674 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 23:05:39,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2019-10-13 23:05:39,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 461. [2019-10-13 23:05:39,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 461 states. [2019-10-13 23:05:39,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 675 transitions. [2019-10-13 23:05:39,785 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 675 transitions. Word has length 112 [2019-10-13 23:05:39,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:05:39,790 INFO L462 AbstractCegarLoop]: Abstraction has 461 states and 675 transitions. [2019-10-13 23:05:39,790 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 23:05:39,790 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 675 transitions. [2019-10-13 23:05:39,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2019-10-13 23:05:39,805 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:39,806 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 23:05:39,806 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:39,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:39,808 INFO L82 PathProgramCache]: Analyzing trace with hash -1509585309, now seen corresponding path program 1 times [2019-10-13 23:05:39,808 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:39,808 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928244483] [2019-10-13 23:05:39,808 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:39,809 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:39,809 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:39,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:40,213 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 23:05:40,214 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928244483] [2019-10-13 23:05:40,214 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:05:40,214 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 23:05:40,214 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247048749] [2019-10-13 23:05:40,216 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 23:05:40,217 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:05:40,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 23:05:40,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:05:40,218 INFO L87 Difference]: Start difference. First operand 461 states and 675 transitions. Second operand 7 states. [2019-10-13 23:05:44,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:05:44,254 INFO L93 Difference]: Finished difference Result 1310 states and 1962 transitions. [2019-10-13 23:05:44,255 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 23:05:44,255 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 113 [2019-10-13 23:05:44,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:05:44,263 INFO L225 Difference]: With dead ends: 1310 [2019-10-13 23:05:44,263 INFO L226 Difference]: Without dead ends: 891 [2019-10-13 23:05:44,271 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 [2019-10-13 23:05:44,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 891 states. [2019-10-13 23:05:44,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 891 to 866. [2019-10-13 23:05:44,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 866 states. [2019-10-13 23:05:44,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 866 states to 866 states and 1293 transitions. [2019-10-13 23:05:44,374 INFO L78 Accepts]: Start accepts. Automaton has 866 states and 1293 transitions. Word has length 113 [2019-10-13 23:05:44,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:05:44,374 INFO L462 AbstractCegarLoop]: Abstraction has 866 states and 1293 transitions. [2019-10-13 23:05:44,374 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 23:05:44,375 INFO L276 IsEmpty]: Start isEmpty. Operand 866 states and 1293 transitions. [2019-10-13 23:05:44,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2019-10-13 23:05:44,382 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:44,382 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 23:05:44,382 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:44,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:44,383 INFO L82 PathProgramCache]: Analyzing trace with hash 210108482, now seen corresponding path program 1 times [2019-10-13 23:05:44,383 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:44,383 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91081959] [2019-10-13 23:05:44,384 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:44,384 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:44,384 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:44,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:44,622 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 23:05:44,622 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91081959] [2019-10-13 23:05:44,623 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:05:44,623 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:05:44,623 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706699867] [2019-10-13 23:05:44,626 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:05:44,626 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:05:44,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:05:44,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:05:44,627 INFO L87 Difference]: Start difference. First operand 866 states and 1293 transitions. Second operand 3 states. [2019-10-13 23:05:44,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:05:44,783 INFO L93 Difference]: Finished difference Result 2472 states and 3759 transitions. [2019-10-13 23:05:44,784 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:05:44,784 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 117 [2019-10-13 23:05:44,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:05:44,815 INFO L225 Difference]: With dead ends: 2472 [2019-10-13 23:05:44,816 INFO L226 Difference]: Without dead ends: 1648 [2019-10-13 23:05:44,823 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 23:05:44,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1648 states. [2019-10-13 23:05:44,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1648 to 1616. [2019-10-13 23:05:44,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1616 states. [2019-10-13 23:05:44,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1616 states to 1616 states and 2453 transitions. [2019-10-13 23:05:44,964 INFO L78 Accepts]: Start accepts. Automaton has 1616 states and 2453 transitions. Word has length 117 [2019-10-13 23:05:44,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:05:44,966 INFO L462 AbstractCegarLoop]: Abstraction has 1616 states and 2453 transitions. [2019-10-13 23:05:44,966 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:05:44,966 INFO L276 IsEmpty]: Start isEmpty. Operand 1616 states and 2453 transitions. [2019-10-13 23:05:44,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2019-10-13 23:05:44,969 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:44,970 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 23:05:44,970 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:44,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:44,970 INFO L82 PathProgramCache]: Analyzing trace with hash -2077884368, now seen corresponding path program 1 times [2019-10-13 23:05:44,971 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:44,971 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516329753] [2019-10-13 23:05:44,971 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:44,971 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:44,971 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:45,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:45,163 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 23:05:45,164 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516329753] [2019-10-13 23:05:45,164 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:05:45,164 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:05:45,164 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255802122] [2019-10-13 23:05:45,165 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:05:45,165 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:05:45,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:05:45,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:05:45,166 INFO L87 Difference]: Start difference. First operand 1616 states and 2453 transitions. Second operand 3 states. [2019-10-13 23:05:45,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:05:45,358 INFO L93 Difference]: Finished difference Result 4723 states and 7276 transitions. [2019-10-13 23:05:45,359 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:05:45,359 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 118 [2019-10-13 23:05:45,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:05:45,389 INFO L225 Difference]: With dead ends: 4723 [2019-10-13 23:05:45,390 INFO L226 Difference]: Without dead ends: 3150 [2019-10-13 23:05:45,400 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 23:05:45,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3150 states. [2019-10-13 23:05:45,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3150 to 3117. [2019-10-13 23:05:45,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3117 states. [2019-10-13 23:05:45,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3117 states to 3117 states and 4795 transitions. [2019-10-13 23:05:45,598 INFO L78 Accepts]: Start accepts. Automaton has 3117 states and 4795 transitions. Word has length 118 [2019-10-13 23:05:45,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:05:45,599 INFO L462 AbstractCegarLoop]: Abstraction has 3117 states and 4795 transitions. [2019-10-13 23:05:45,599 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:05:45,600 INFO L276 IsEmpty]: Start isEmpty. Operand 3117 states and 4795 transitions. [2019-10-13 23:05:45,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-10-13 23:05:45,603 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:45,603 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 23:05:45,604 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:45,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:45,604 INFO L82 PathProgramCache]: Analyzing trace with hash 8785220, now seen corresponding path program 1 times [2019-10-13 23:05:45,604 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:45,605 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152844873] [2019-10-13 23:05:45,605 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:45,605 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:45,605 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:45,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:45,839 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 23:05:45,840 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152844873] [2019-10-13 23:05:45,840 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:05:45,840 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:05:45,840 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579112682] [2019-10-13 23:05:45,841 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:05:45,841 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:05:45,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:05:45,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:05:45,842 INFO L87 Difference]: Start difference. First operand 3117 states and 4795 transitions. Second operand 3 states. [2019-10-13 23:05:46,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:05:46,139 INFO L93 Difference]: Finished difference Result 9226 states and 14421 transitions. [2019-10-13 23:05:46,139 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:05:46,139 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 119 [2019-10-13 23:05:46,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:05:46,194 INFO L225 Difference]: With dead ends: 9226 [2019-10-13 23:05:46,194 INFO L226 Difference]: Without dead ends: 6154 [2019-10-13 23:05:46,214 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 23:05:46,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6154 states. [2019-10-13 23:05:46,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6154 to 6120. [2019-10-13 23:05:46,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6120 states. [2019-10-13 23:05:46,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6120 states to 6120 states and 9555 transitions. [2019-10-13 23:05:46,652 INFO L78 Accepts]: Start accepts. Automaton has 6120 states and 9555 transitions. Word has length 119 [2019-10-13 23:05:46,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:05:46,653 INFO L462 AbstractCegarLoop]: Abstraction has 6120 states and 9555 transitions. [2019-10-13 23:05:46,653 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:05:46,653 INFO L276 IsEmpty]: Start isEmpty. Operand 6120 states and 9555 transitions. [2019-10-13 23:05:46,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-10-13 23:05:46,657 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:46,658 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 23:05:46,658 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:46,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:46,658 INFO L82 PathProgramCache]: Analyzing trace with hash 271036914, now seen corresponding path program 1 times [2019-10-13 23:05:46,659 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:46,659 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217659068] [2019-10-13 23:05:46,659 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:46,659 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:46,659 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:46,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:46,816 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 23:05:46,816 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217659068] [2019-10-13 23:05:46,817 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:05:46,817 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:05:46,817 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271060451] [2019-10-13 23:05:46,818 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:05:46,818 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:05:46,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:05:46,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:05:46,819 INFO L87 Difference]: Start difference. First operand 6120 states and 9555 transitions. Second operand 3 states. [2019-10-13 23:05:47,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:05:47,418 INFO L93 Difference]: Finished difference Result 18233 states and 29104 transitions. [2019-10-13 23:05:47,419 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:05:47,419 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 120 [2019-10-13 23:05:47,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:05:47,557 INFO L225 Difference]: With dead ends: 18233 [2019-10-13 23:05:47,557 INFO L226 Difference]: Without dead ends: 12162 [2019-10-13 23:05:47,604 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 23:05:47,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12162 states. [2019-10-13 23:05:48,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12162 to 12127. [2019-10-13 23:05:48,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12127 states. [2019-10-13 23:05:48,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12127 states to 12127 states and 19351 transitions. [2019-10-13 23:05:48,403 INFO L78 Accepts]: Start accepts. Automaton has 12127 states and 19351 transitions. Word has length 120 [2019-10-13 23:05:48,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:05:48,404 INFO L462 AbstractCegarLoop]: Abstraction has 12127 states and 19351 transitions. [2019-10-13 23:05:48,404 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:05:48,404 INFO L276 IsEmpty]: Start isEmpty. Operand 12127 states and 19351 transitions. [2019-10-13 23:05:48,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2019-10-13 23:05:48,408 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:48,408 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 23:05:48,408 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:48,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:48,409 INFO L82 PathProgramCache]: Analyzing trace with hash -189091258, now seen corresponding path program 1 times [2019-10-13 23:05:48,409 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:48,409 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502570901] [2019-10-13 23:05:48,409 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:48,410 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:48,410 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:48,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:49,266 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 23:05:49,267 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502570901] [2019-10-13 23:05:49,267 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:05:49,268 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:05:49,268 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103373425] [2019-10-13 23:05:49,268 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:05:49,268 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:05:49,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:05:49,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:05:49,269 INFO L87 Difference]: Start difference. First operand 12127 states and 19351 transitions. Second operand 3 states. [2019-10-13 23:05:49,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:05:49,680 INFO L93 Difference]: Finished difference Result 12914 states and 20690 transitions. [2019-10-13 23:05:49,680 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:05:49,681 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 121 [2019-10-13 23:05:49,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:05:49,818 INFO L225 Difference]: With dead ends: 12914 [2019-10-13 23:05:49,818 INFO L226 Difference]: Without dead ends: 12901 [2019-10-13 23:05:49,832 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 23:05:49,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12901 states. [2019-10-13 23:05:50,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12901 to 12871. [2019-10-13 23:05:50,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12871 states. [2019-10-13 23:05:50,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12871 states to 12871 states and 20628 transitions. [2019-10-13 23:05:50,684 INFO L78 Accepts]: Start accepts. Automaton has 12871 states and 20628 transitions. Word has length 121 [2019-10-13 23:05:50,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:05:50,684 INFO L462 AbstractCegarLoop]: Abstraction has 12871 states and 20628 transitions. [2019-10-13 23:05:50,684 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:05:50,684 INFO L276 IsEmpty]: Start isEmpty. Operand 12871 states and 20628 transitions. [2019-10-13 23:05:50,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2019-10-13 23:05:50,692 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:50,692 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 23:05:50,693 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:50,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:50,693 INFO L82 PathProgramCache]: Analyzing trace with hash 795157014, now seen corresponding path program 1 times [2019-10-13 23:05:50,693 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:50,693 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978541407] [2019-10-13 23:05:50,694 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:50,694 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:50,694 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:50,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:50,907 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 23:05:50,907 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978541407] [2019-10-13 23:05:50,907 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:05:50,908 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 23:05:50,908 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615068602] [2019-10-13 23:05:50,909 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 23:05:50,909 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:05:50,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 23:05:50,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 23:05:50,910 INFO L87 Difference]: Start difference. First operand 12871 states and 20628 transitions. Second operand 5 states. [2019-10-13 23:05:51,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:05:51,439 INFO L93 Difference]: Finished difference Result 25886 states and 42190 transitions. [2019-10-13 23:05:51,439 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 23:05:51,439 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 186 [2019-10-13 23:05:51,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:05:51,539 INFO L225 Difference]: With dead ends: 25886 [2019-10-13 23:05:51,539 INFO L226 Difference]: Without dead ends: 13058 [2019-10-13 23:05:51,620 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 23:05:51,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13058 states. [2019-10-13 23:05:52,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13058 to 13055. [2019-10-13 23:05:52,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13055 states. [2019-10-13 23:05:52,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13055 states to 13055 states and 20974 transitions. [2019-10-13 23:05:52,588 INFO L78 Accepts]: Start accepts. Automaton has 13055 states and 20974 transitions. Word has length 186 [2019-10-13 23:05:52,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:05:52,588 INFO L462 AbstractCegarLoop]: Abstraction has 13055 states and 20974 transitions. [2019-10-13 23:05:52,589 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 23:05:52,589 INFO L276 IsEmpty]: Start isEmpty. Operand 13055 states and 20974 transitions. [2019-10-13 23:05:52,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2019-10-13 23:05:52,599 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:52,600 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, 1, 1, 1, 1] [2019-10-13 23:05:52,600 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:52,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:52,601 INFO L82 PathProgramCache]: Analyzing trace with hash 338406242, now seen corresponding path program 1 times [2019-10-13 23:05:52,601 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:52,601 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050606096] [2019-10-13 23:05:52,602 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:52,602 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:52,602 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:52,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:52,937 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 23:05:52,938 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050606096] [2019-10-13 23:05:52,941 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1618208255] [2019-10-13 23:05:52,941 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 23:05:53,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:53,576 INFO L256 TraceCheckSpWp]: Trace formula consists of 3459 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 23:05:53,605 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:05:53,703 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-13 23:05:53,703 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:05:54,283 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 23:05:54,284 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 23:05:54,284 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 4] total 10 [2019-10-13 23:05:54,284 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862907725] [2019-10-13 23:05:54,285 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 23:05:54,285 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:05:54,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 23:05:54,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-10-13 23:05:54,286 INFO L87 Difference]: Start difference. First operand 13055 states and 20974 transitions. Second operand 4 states. [2019-10-13 23:05:55,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:05:55,989 INFO L93 Difference]: Finished difference Result 27393 states and 45200 transitions. [2019-10-13 23:05:55,989 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 23:05:55,990 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 195 [2019-10-13 23:05:55,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:05:56,092 INFO L225 Difference]: With dead ends: 27393 [2019-10-13 23:05:56,094 INFO L226 Difference]: Without dead ends: 14381 [2019-10-13 23:05:56,151 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 400 GetRequests, 389 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 23:05:56,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14381 states. [2019-10-13 23:05:57,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14381 to 14381. [2019-10-13 23:05:57,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14381 states. [2019-10-13 23:05:57,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14381 states to 14381 states and 23456 transitions. [2019-10-13 23:05:57,238 INFO L78 Accepts]: Start accepts. Automaton has 14381 states and 23456 transitions. Word has length 195 [2019-10-13 23:05:57,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:05:57,239 INFO L462 AbstractCegarLoop]: Abstraction has 14381 states and 23456 transitions. [2019-10-13 23:05:57,239 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 23:05:57,239 INFO L276 IsEmpty]: Start isEmpty. Operand 14381 states and 23456 transitions. [2019-10-13 23:05:57,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2019-10-13 23:05:57,249 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:57,250 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, 1, 1, 1, 1] [2019-10-13 23:05:57,459 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:05:57,459 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:57,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:57,460 INFO L82 PathProgramCache]: Analyzing trace with hash 1200519654, now seen corresponding path program 1 times [2019-10-13 23:05:57,460 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:57,460 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263512333] [2019-10-13 23:05:57,461 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:57,461 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:57,461 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:57,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:57,708 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 23:05:57,708 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263512333] [2019-10-13 23:05:57,708 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1289202690] [2019-10-13 23:05:57,709 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 23:05:58,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:58,733 INFO L256 TraceCheckSpWp]: Trace formula consists of 3464 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 23:05:58,749 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:05:58,811 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-10-13 23:05:58,811 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:05:59,337 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 23:05:59,337 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 23:05:59,338 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 7 [2019-10-13 23:05:59,338 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464170056] [2019-10-13 23:05:59,339 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 23:05:59,339 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:05:59,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 23:05:59,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:05:59,340 INFO L87 Difference]: Start difference. First operand 14381 states and 23456 transitions. Second operand 4 states. [2019-10-13 23:06:00,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:06:00,120 INFO L93 Difference]: Finished difference Result 30045 states and 50130 transitions. [2019-10-13 23:06:00,120 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 23:06:00,120 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 200 [2019-10-13 23:06:00,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:06:00,226 INFO L225 Difference]: With dead ends: 30045 [2019-10-13 23:06:00,227 INFO L226 Difference]: Without dead ends: 15707 [2019-10-13 23:06:00,282 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 405 GetRequests, 397 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 23:06:00,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15707 states. [2019-10-13 23:06:01,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15707 to 15707. [2019-10-13 23:06:01,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15707 states. [2019-10-13 23:06:01,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15707 states to 15707 states and 25938 transitions. [2019-10-13 23:06:01,205 INFO L78 Accepts]: Start accepts. Automaton has 15707 states and 25938 transitions. Word has length 200 [2019-10-13 23:06:01,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:06:01,207 INFO L462 AbstractCegarLoop]: Abstraction has 15707 states and 25938 transitions. [2019-10-13 23:06:01,207 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 23:06:01,207 INFO L276 IsEmpty]: Start isEmpty. Operand 15707 states and 25938 transitions. [2019-10-13 23:06:01,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2019-10-13 23:06:01,218 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:06:01,219 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, 1, 1, 1, 1] [2019-10-13 23:06:01,426 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:06:01,427 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:06:01,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:06:01,428 INFO L82 PathProgramCache]: Analyzing trace with hash 421800790, now seen corresponding path program 1 times [2019-10-13 23:06:01,428 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:06:01,428 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518742967] [2019-10-13 23:06:01,428 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:06:01,428 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:06:01,428 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:06:01,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:06:01,648 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 23:06:01,649 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518742967] [2019-10-13 23:06:01,649 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1071054366] [2019-10-13 23:06:01,649 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