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_product25.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 23:05:22,062 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 23:05:22,065 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 23:05:22,082 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 23:05:22,083 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 23:05:22,085 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 23:05:22,087 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 23:05:22,097 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 23:05:22,102 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 23:05:22,105 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 23:05:22,106 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 23:05:22,108 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 23:05:22,108 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 23:05:22,110 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 23:05:22,112 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 23:05:22,114 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 23:05:22,115 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 23:05:22,116 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 23:05:22,118 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 23:05:22,122 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 23:05:22,127 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 23:05:22,130 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 23:05:22,132 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 23:05:22,133 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 23:05:22,135 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 23:05:22,135 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 23:05:22,136 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 23:05:22,137 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 23:05:22,139 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 23:05:22,140 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 23:05:22,140 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 23:05:22,142 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 23:05:22,143 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 23:05:22,143 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 23:05:22,145 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 23:05:22,145 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 23:05:22,146 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 23:05:22,146 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 23:05:22,146 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 23:05:22,147 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 23:05:22,148 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 23:05:22,149 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 23:05:22,182 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 23:05:22,184 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 23:05:22,186 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 23:05:22,186 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 23:05:22,186 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 23:05:22,188 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 23:05:22,188 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 23:05:22,189 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 23:05:22,189 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 23:05:22,189 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 23:05:22,189 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 23:05:22,189 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 23:05:22,190 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 23:05:22,190 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 23:05:22,190 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 23:05:22,190 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 23:05:22,190 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 23:05:22,191 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 23:05:22,191 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 23:05:22,191 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 23:05:22,191 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 23:05:22,191 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:05:22,192 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 23:05:22,192 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 23:05:22,192 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 23:05:22,192 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 23:05:22,192 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 23:05:22,193 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 23:05:22,193 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 23:05:22,463 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 23:05:22,478 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 23:05:22,482 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 23:05:22,483 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 23:05:22,484 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 23:05:22,484 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec9_product25.cil.c [2019-10-13 23:05:22,552 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99e9f7d08/ad8765ad90304a659312df1aba0a526d/FLAGcf966f9f2 [2019-10-13 23:05:23,299 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 23:05:23,300 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec9_product25.cil.c [2019-10-13 23:05:23,326 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99e9f7d08/ad8765ad90304a659312df1aba0a526d/FLAGcf966f9f2 [2019-10-13 23:05:23,461 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99e9f7d08/ad8765ad90304a659312df1aba0a526d [2019-10-13 23:05:23,471 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 23:05:23,473 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 23:05:23,474 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 23:05:23,474 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 23:05:23,478 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 23:05:23,479 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:05:23" (1/1) ... [2019-10-13 23:05:23,482 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58782538 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:05:23, skipping insertion in model container [2019-10-13 23:05:23,482 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:05:23" (1/1) ... [2019-10-13 23:05:23,490 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 23:05:23,559 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 23:05:24,336 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:05:24,357 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 23:05:24,537 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:05:24,621 INFO L192 MainTranslator]: Completed translation [2019-10-13 23:05:24,622 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:05:24 WrapperNode [2019-10-13 23:05:24,622 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 23:05:24,623 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 23:05:24,624 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 23:05:24,624 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 23:05:24,644 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:05:24" (1/1) ... [2019-10-13 23:05:24,645 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:05:24" (1/1) ... [2019-10-13 23:05:24,717 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:05:24" (1/1) ... [2019-10-13 23:05:24,718 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:05:24" (1/1) ... [2019-10-13 23:05:24,804 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:05:24" (1/1) ... [2019-10-13 23:05:24,846 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:05:24" (1/1) ... [2019-10-13 23:05:24,868 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:05:24" (1/1) ... [2019-10-13 23:05:24,890 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 23:05:24,891 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 23:05:24,891 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 23:05:24,891 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 23:05:24,894 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:05:24" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:05:24,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 23:05:24,953 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 23:05:24,953 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 23:05:24,953 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification9_spec__1 [2019-10-13 23:05:24,953 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification9_spec__2 [2019-10-13 23:05:24,954 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification9_spec__3 [2019-10-13 23:05:24,954 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification9_spec__4 [2019-10-13 23:05:24,954 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-13 23:05:24,954 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-13 23:05:24,954 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-13 23:05:24,955 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-13 23:05:24,955 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-13 23:05:24,955 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 23:05:24,955 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 23:05:24,956 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 23:05:24,956 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 23:05:24,956 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 23:05:24,956 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 23:05:24,957 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 23:05:24,957 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-13 23:05:24,958 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-13 23:05:24,958 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-13 23:05:24,958 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-13 23:05:24,959 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-13 23:05:24,959 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-13 23:05:24,959 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-13 23:05:24,959 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-13 23:05:24,959 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 23:05:24,960 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-13 23:05:24,960 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-13 23:05:24,960 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-13 23:05:24,960 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 23:05:24,960 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-13 23:05:24,960 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 23:05:24,961 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 23:05:24,961 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 23:05:24,961 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 23:05:24,961 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-13 23:05:24,961 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-13 23:05:24,961 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-13 23:05:24,962 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-13 23:05:24,962 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-13 23:05:24,962 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-13 23:05:24,962 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-13 23:05:24,962 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-13 23:05:24,962 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 23:05:24,962 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 23:05:24,962 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 23:05:24,963 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 23:05:24,963 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-13 23:05:24,963 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-13 23:05:24,963 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-13 23:05:24,963 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-13 23:05:24,963 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-13 23:05:24,963 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-13 23:05:24,964 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__weight [2019-10-13 23:05:24,964 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-13 23:05:24,964 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-13 23:05:24,964 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-13 23:05:24,964 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-13 23:05:24,964 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-13 23:05:24,965 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-13 23:05:24,965 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-13 23:05:24,965 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-13 23:05:24,965 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-13 23:05:24,965 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-13 23:05:24,965 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-13 23:05:24,965 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-13 23:05:24,965 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-13 23:05:24,966 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-13 23:05:24,966 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-13 23:05:24,966 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-13 23:05:24,966 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 23:05:24,966 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-13 23:05:24,966 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-13 23:05:24,967 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 23:05:24,967 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 23:05:24,967 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 23:05:24,967 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-13 23:05:24,968 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-13 23:05:24,968 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-13 23:05:24,968 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification9_spec__1 [2019-10-13 23:05:24,968 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification9_spec__2 [2019-10-13 23:05:24,968 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification9_spec__3 [2019-10-13 23:05:24,968 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification9_spec__4 [2019-10-13 23:05:24,969 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-13 23:05:24,969 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-13 23:05:24,969 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-13 23:05:24,969 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-13 23:05:24,969 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 23:05:24,970 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-13 23:05:24,970 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-13 23:05:24,970 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-13 23:05:24,970 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-13 23:05:24,970 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-13 23:05:24,970 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-13 23:05:24,970 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-13 23:05:24,971 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 23:05:24,971 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 23:05:24,971 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 23:05:24,971 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 23:05:24,971 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 23:05:24,971 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 23:05:24,971 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 23:05:24,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 23:05:24,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 23:05:24,972 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 23:05:24,972 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 23:05:24,972 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 23:05:24,972 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 23:05:24,972 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 23:05:24,972 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 23:05:24,972 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 23:05:24,973 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 23:05:24,973 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 23:05:24,973 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 23:05:24,973 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 23:05:24,973 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-13 23:05:24,973 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-13 23:05:24,974 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-13 23:05:24,974 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-13 23:05:24,974 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-13 23:05:24,974 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-13 23:05:24,974 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-13 23:05:24,975 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-13 23:05:24,975 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-13 23:05:24,975 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-13 23:05:24,975 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-13 23:05:24,975 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 23:05:24,975 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-13 23:05:24,976 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 23:05:24,976 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 23:05:24,976 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 23:05:24,976 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 23:05:24,976 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 23:05:24,977 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 23:05:24,977 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-13 23:05:24,977 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-13 23:05:24,977 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-13 23:05:24,977 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-13 23:05:24,977 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-13 23:05:24,978 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-13 23:05:24,978 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-13 23:05:24,978 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 23:05:24,978 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 23:05:24,978 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-13 23:05:24,979 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-13 23:05:24,979 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-13 23:05:24,979 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-13 23:05:24,979 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-13 23:05:24,979 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__weight [2019-10-13 23:05:24,980 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-13 23:05:24,980 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-13 23:05:24,980 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-13 23:05:24,980 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-13 23:05:24,980 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-13 23:05:24,981 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-13 23:05:24,981 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-13 23:05:24,981 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-13 23:05:24,981 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-13 23:05:24,981 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-13 23:05:24,981 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-13 23:05:24,982 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 23:05:24,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 23:05:24,982 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 23:05:29,794 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 23:05:29,794 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-13 23:05:29,796 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:05:29 BoogieIcfgContainer [2019-10-13 23:05:29,796 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 23:05:29,798 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 23:05:29,798 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 23:05:29,801 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 23:05:29,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:05:23" (1/3) ... [2019-10-13 23:05:29,803 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fd91ef0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:05:29, skipping insertion in model container [2019-10-13 23:05:29,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:05:24" (2/3) ... [2019-10-13 23:05:29,803 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fd91ef0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:05:29, skipping insertion in model container [2019-10-13 23:05:29,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:05:29" (3/3) ... [2019-10-13 23:05:29,805 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec9_product25.cil.c [2019-10-13 23:05:29,816 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 23:05:29,827 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 23:05:29,893 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 23:05:29,926 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 23:05:29,926 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 23:05:29,926 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 23:05:29,926 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 23:05:29,926 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 23:05:29,926 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 23:05:29,927 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 23:05:29,927 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 23:05:29,974 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states. [2019-10-13 23:05:29,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2019-10-13 23:05:29,993 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:29,994 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:05:29,996 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:30,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:30,003 INFO L82 PathProgramCache]: Analyzing trace with hash 893347726, now seen corresponding path program 1 times [2019-10-13 23:05:30,013 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:30,013 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882391765] [2019-10-13 23:05:30,013 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:30,014 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:30,014 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:30,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:30,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:05:30,671 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882391765] [2019-10-13 23:05:30,672 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:05:30,672 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 23:05:30,673 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059728578] [2019-10-13 23:05:30,679 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 23:05:30,680 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:05:30,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 23:05:30,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-13 23:05:30,698 INFO L87 Difference]: Start difference. First operand 540 states. Second operand 8 states. [2019-10-13 23:05:30,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:05:30,909 INFO L93 Difference]: Finished difference Result 832 states and 1275 transitions. [2019-10-13 23:05:30,909 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-13 23:05:30,911 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 92 [2019-10-13 23:05:30,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:05:30,936 INFO L225 Difference]: With dead ends: 832 [2019-10-13 23:05:30,937 INFO L226 Difference]: Without dead ends: 448 [2019-10-13 23:05:30,946 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-13 23:05:30,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2019-10-13 23:05:31,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 413. [2019-10-13 23:05:31,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 413 states. [2019-10-13 23:05:31,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 612 transitions. [2019-10-13 23:05:31,061 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 612 transitions. Word has length 92 [2019-10-13 23:05:31,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:05:31,062 INFO L462 AbstractCegarLoop]: Abstraction has 413 states and 612 transitions. [2019-10-13 23:05:31,062 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 23:05:31,062 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 612 transitions. [2019-10-13 23:05:31,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2019-10-13 23:05:31,070 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:31,070 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:05:31,070 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:31,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:31,071 INFO L82 PathProgramCache]: Analyzing trace with hash -1609509534, now seen corresponding path program 1 times [2019-10-13 23:05:31,071 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:31,071 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465784362] [2019-10-13 23:05:31,072 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:31,072 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:31,072 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:31,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:31,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:05:31,355 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465784362] [2019-10-13 23:05:31,356 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:05:31,356 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 23:05:31,356 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24319632] [2019-10-13 23:05:31,358 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 23:05:31,359 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:05:31,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 23:05:31,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:05:31,359 INFO L87 Difference]: Start difference. First operand 413 states and 612 transitions. Second operand 7 states. [2019-10-13 23:05:35,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:05:35,063 INFO L93 Difference]: Finished difference Result 1270 states and 1945 transitions. [2019-10-13 23:05:35,066 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-10-13 23:05:35,066 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 97 [2019-10-13 23:05:35,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:05:35,091 INFO L225 Difference]: With dead ends: 1270 [2019-10-13 23:05:35,091 INFO L226 Difference]: Without dead ends: 899 [2019-10-13 23:05:35,094 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2019-10-13 23:05:35,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 899 states. [2019-10-13 23:05:35,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 899 to 872. [2019-10-13 23:05:35,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 872 states. [2019-10-13 23:05:35,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 872 states to 872 states and 1339 transitions. [2019-10-13 23:05:35,227 INFO L78 Accepts]: Start accepts. Automaton has 872 states and 1339 transitions. Word has length 97 [2019-10-13 23:05:35,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:05:35,230 INFO L462 AbstractCegarLoop]: Abstraction has 872 states and 1339 transitions. [2019-10-13 23:05:35,230 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 23:05:35,231 INFO L276 IsEmpty]: Start isEmpty. Operand 872 states and 1339 transitions. [2019-10-13 23:05:35,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2019-10-13 23:05:35,244 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:35,245 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:05:35,245 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:35,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:35,251 INFO L82 PathProgramCache]: Analyzing trace with hash -1458529294, now seen corresponding path program 1 times [2019-10-13 23:05:35,252 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:35,252 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767418389] [2019-10-13 23:05:35,253 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:35,254 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:35,254 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:35,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:35,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:05:35,608 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767418389] [2019-10-13 23:05:35,608 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:05:35,609 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 23:05:35,609 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132545564] [2019-10-13 23:05:35,611 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 23:05:35,612 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:05:35,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 23:05:35,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 23:05:35,613 INFO L87 Difference]: Start difference. First operand 872 states and 1339 transitions. Second operand 5 states. [2019-10-13 23:05:35,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:05:35,698 INFO L93 Difference]: Finished difference Result 1380 states and 2133 transitions. [2019-10-13 23:05:35,698 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 23:05:35,699 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 101 [2019-10-13 23:05:35,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:05:35,707 INFO L225 Difference]: With dead ends: 1380 [2019-10-13 23:05:35,708 INFO L226 Difference]: Without dead ends: 894 [2019-10-13 23:05:35,710 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 23:05:35,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 894 states. [2019-10-13 23:05:35,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 894 to 884. [2019-10-13 23:05:35,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 884 states. [2019-10-13 23:05:35,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 884 states to 884 states and 1354 transitions. [2019-10-13 23:05:35,795 INFO L78 Accepts]: Start accepts. Automaton has 884 states and 1354 transitions. Word has length 101 [2019-10-13 23:05:35,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:05:35,796 INFO L462 AbstractCegarLoop]: Abstraction has 884 states and 1354 transitions. [2019-10-13 23:05:35,796 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 23:05:35,796 INFO L276 IsEmpty]: Start isEmpty. Operand 884 states and 1354 transitions. [2019-10-13 23:05:35,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2019-10-13 23:05:35,807 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:35,808 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:05:35,808 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:35,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:35,809 INFO L82 PathProgramCache]: Analyzing trace with hash 1482107146, now seen corresponding path program 1 times [2019-10-13 23:05:35,809 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:35,809 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147806738] [2019-10-13 23:05:35,810 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:35,810 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:35,810 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:35,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:36,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:05:36,066 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147806738] [2019-10-13 23:05:36,067 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:05:36,067 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 23:05:36,067 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175565873] [2019-10-13 23:05:36,067 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 23:05:36,068 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:05:36,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 23:05:36,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-10-13 23:05:36,068 INFO L87 Difference]: Start difference. First operand 884 states and 1354 transitions. Second operand 8 states. [2019-10-13 23:05:39,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:05:39,388 INFO L93 Difference]: Finished difference Result 1873 states and 2875 transitions. [2019-10-13 23:05:39,388 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-13 23:05:39,389 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 105 [2019-10-13 23:05:39,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:05:39,408 INFO L225 Difference]: With dead ends: 1873 [2019-10-13 23:05:39,408 INFO L226 Difference]: Without dead ends: 1279 [2019-10-13 23:05:39,416 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2019-10-13 23:05:39,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1279 states. [2019-10-13 23:05:39,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1279 to 1229. [2019-10-13 23:05:39,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1229 states. [2019-10-13 23:05:39,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1229 states to 1229 states and 1839 transitions. [2019-10-13 23:05:39,518 INFO L78 Accepts]: Start accepts. Automaton has 1229 states and 1839 transitions. Word has length 105 [2019-10-13 23:05:39,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:05:39,520 INFO L462 AbstractCegarLoop]: Abstraction has 1229 states and 1839 transitions. [2019-10-13 23:05:39,521 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 23:05:39,521 INFO L276 IsEmpty]: Start isEmpty. Operand 1229 states and 1839 transitions. [2019-10-13 23:05:39,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2019-10-13 23:05:39,524 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:39,525 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:05:39,525 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:39,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:39,525 INFO L82 PathProgramCache]: Analyzing trace with hash -258804804, now seen corresponding path program 1 times [2019-10-13 23:05:39,526 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:39,526 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458575154] [2019-10-13 23:05:39,526 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:39,527 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:39,527 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:39,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:39,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:05:39,749 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458575154] [2019-10-13 23:05:39,749 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:05:39,749 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 23:05:39,749 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876088700] [2019-10-13 23:05:39,751 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 23:05:39,751 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:05:39,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 23:05:39,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:05:39,752 INFO L87 Difference]: Start difference. First operand 1229 states and 1839 transitions. Second operand 7 states. [2019-10-13 23:05:40,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:05:40,143 INFO L93 Difference]: Finished difference Result 2312 states and 3548 transitions. [2019-10-13 23:05:40,144 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 23:05:40,144 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 108 [2019-10-13 23:05:40,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:05:40,155 INFO L225 Difference]: With dead ends: 2312 [2019-10-13 23:05:40,155 INFO L226 Difference]: Without dead ends: 1229 [2019-10-13 23:05:40,161 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-13 23:05:40,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1229 states. [2019-10-13 23:05:40,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1229 to 1229. [2019-10-13 23:05:40,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1229 states. [2019-10-13 23:05:40,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1229 states to 1229 states and 1807 transitions. [2019-10-13 23:05:40,230 INFO L78 Accepts]: Start accepts. Automaton has 1229 states and 1807 transitions. Word has length 108 [2019-10-13 23:05:40,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:05:40,230 INFO L462 AbstractCegarLoop]: Abstraction has 1229 states and 1807 transitions. [2019-10-13 23:05:40,230 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 23:05:40,230 INFO L276 IsEmpty]: Start isEmpty. Operand 1229 states and 1807 transitions. [2019-10-13 23:05:40,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2019-10-13 23:05:40,235 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:40,235 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:05:40,236 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:40,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:40,239 INFO L82 PathProgramCache]: Analyzing trace with hash -602794650, now seen corresponding path program 1 times [2019-10-13 23:05:40,239 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:40,240 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017879966] [2019-10-13 23:05:40,240 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:40,240 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:40,240 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:40,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:40,438 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-13 23:05:40,439 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017879966] [2019-10-13 23:05:40,439 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:05:40,439 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 23:05:40,440 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730896084] [2019-10-13 23:05:40,440 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 23:05:40,440 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:05:40,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 23:05:40,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:05:40,441 INFO L87 Difference]: Start difference. First operand 1229 states and 1807 transitions. Second operand 7 states. [2019-10-13 23:05:43,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:05:43,636 INFO L93 Difference]: Finished difference Result 2181 states and 3218 transitions. [2019-10-13 23:05:43,637 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 23:05:43,637 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 110 [2019-10-13 23:05:43,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:05:43,649 INFO L225 Difference]: With dead ends: 2181 [2019-10-13 23:05:43,649 INFO L226 Difference]: Without dead ends: 1299 [2019-10-13 23:05:43,656 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-13 23:05:43,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1299 states. [2019-10-13 23:05:43,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1299 to 1256. [2019-10-13 23:05:43,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1256 states. [2019-10-13 23:05:43,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1256 states to 1256 states and 1841 transitions. [2019-10-13 23:05:43,735 INFO L78 Accepts]: Start accepts. Automaton has 1256 states and 1841 transitions. Word has length 110 [2019-10-13 23:05:43,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:05:43,735 INFO L462 AbstractCegarLoop]: Abstraction has 1256 states and 1841 transitions. [2019-10-13 23:05:43,735 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 23:05:43,736 INFO L276 IsEmpty]: Start isEmpty. Operand 1256 states and 1841 transitions. [2019-10-13 23:05:43,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2019-10-13 23:05:43,739 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:43,739 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-13 23:05:43,740 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:43,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:43,740 INFO L82 PathProgramCache]: Analyzing trace with hash 1548781473, now seen corresponding path program 1 times [2019-10-13 23:05:43,740 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:43,741 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282264993] [2019-10-13 23:05:43,741 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:43,741 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:43,741 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:43,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:43,930 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-13 23:05:43,930 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282264993] [2019-10-13 23:05:43,931 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:05:43,931 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:05:43,931 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144164899] [2019-10-13 23:05:43,932 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:05:43,932 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:05:43,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:05:43,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:05:43,933 INFO L87 Difference]: Start difference. First operand 1256 states and 1841 transitions. Second operand 3 states. [2019-10-13 23:05:44,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:05:44,079 INFO L93 Difference]: Finished difference Result 3626 states and 5399 transitions. [2019-10-13 23:05:44,080 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:05:44,080 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 114 [2019-10-13 23:05:44,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:05:44,166 INFO L225 Difference]: With dead ends: 3626 [2019-10-13 23:05:44,166 INFO L226 Difference]: Without dead ends: 2412 [2019-10-13 23:05:44,174 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 23:05:44,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2412 states. [2019-10-13 23:05:44,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2412 to 2365. [2019-10-13 23:05:44,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2365 states. [2019-10-13 23:05:44,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2365 states to 2365 states and 3515 transitions. [2019-10-13 23:05:44,337 INFO L78 Accepts]: Start accepts. Automaton has 2365 states and 3515 transitions. Word has length 114 [2019-10-13 23:05:44,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:05:44,339 INFO L462 AbstractCegarLoop]: Abstraction has 2365 states and 3515 transitions. [2019-10-13 23:05:44,339 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:05:44,339 INFO L276 IsEmpty]: Start isEmpty. Operand 2365 states and 3515 transitions. [2019-10-13 23:05:44,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2019-10-13 23:05:44,343 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:44,345 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:05:44,345 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:44,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:44,346 INFO L82 PathProgramCache]: Analyzing trace with hash -288829339, now seen corresponding path program 1 times [2019-10-13 23:05:44,346 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:44,347 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745313333] [2019-10-13 23:05:44,347 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:44,347 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:44,347 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:44,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:44,520 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-13 23:05:44,521 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745313333] [2019-10-13 23:05:44,521 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:05:44,521 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:05:44,522 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334406532] [2019-10-13 23:05:44,522 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:05:44,522 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:05:44,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:05:44,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:05:44,523 INFO L87 Difference]: Start difference. First operand 2365 states and 3515 transitions. Second operand 3 states. [2019-10-13 23:05:44,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:05:44,700 INFO L93 Difference]: Finished difference Result 6954 states and 10490 transitions. [2019-10-13 23:05:44,701 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:05:44,701 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 118 [2019-10-13 23:05:44,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:05:44,735 INFO L225 Difference]: With dead ends: 6954 [2019-10-13 23:05:44,736 INFO L226 Difference]: Without dead ends: 4632 [2019-10-13 23:05:44,750 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 23:05:44,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4632 states. [2019-10-13 23:05:44,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4632 to 4584. [2019-10-13 23:05:44,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4584 states. [2019-10-13 23:05:44,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4584 states to 4584 states and 6902 transitions. [2019-10-13 23:05:44,997 INFO L78 Accepts]: Start accepts. Automaton has 4584 states and 6902 transitions. Word has length 118 [2019-10-13 23:05:44,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:05:44,997 INFO L462 AbstractCegarLoop]: Abstraction has 4584 states and 6902 transitions. [2019-10-13 23:05:44,998 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:05:44,998 INFO L276 IsEmpty]: Start isEmpty. Operand 4584 states and 6902 transitions. [2019-10-13 23:05:45,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2019-10-13 23:05:45,003 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:45,003 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-13 23:05:45,003 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:45,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:45,004 INFO L82 PathProgramCache]: Analyzing trace with hash -2015410781, now seen corresponding path program 1 times [2019-10-13 23:05:45,004 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:45,005 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219577361] [2019-10-13 23:05:45,005 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:45,005 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:45,005 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:45,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:45,178 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-13 23:05:45,178 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219577361] [2019-10-13 23:05:45,179 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:05:45,179 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:05:45,179 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746353393] [2019-10-13 23:05:45,179 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:05:45,180 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:05:45,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:05:45,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:05:45,180 INFO L87 Difference]: Start difference. First operand 4584 states and 6902 transitions. Second operand 3 states. [2019-10-13 23:05:45,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:05:45,499 INFO L93 Difference]: Finished difference Result 13611 states and 20872 transitions. [2019-10-13 23:05:45,500 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:05:45,500 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 116 [2019-10-13 23:05:45,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:05:45,579 INFO L225 Difference]: With dead ends: 13611 [2019-10-13 23:05:45,579 INFO L226 Difference]: Without dead ends: 9072 [2019-10-13 23:05:45,613 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 23:05:45,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9072 states. [2019-10-13 23:05:46,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9072 to 9023. [2019-10-13 23:05:46,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9023 states. [2019-10-13 23:05:46,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9023 states to 9023 states and 13810 transitions. [2019-10-13 23:05:46,207 INFO L78 Accepts]: Start accepts. Automaton has 9023 states and 13810 transitions. Word has length 116 [2019-10-13 23:05:46,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:05:46,209 INFO L462 AbstractCegarLoop]: Abstraction has 9023 states and 13810 transitions. [2019-10-13 23:05:46,209 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:05:46,209 INFO L276 IsEmpty]: Start isEmpty. Operand 9023 states and 13810 transitions. [2019-10-13 23:05:46,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2019-10-13 23:05:46,213 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:46,213 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:05:46,214 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:46,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:46,214 INFO L82 PathProgramCache]: Analyzing trace with hash 1945509337, now seen corresponding path program 1 times [2019-10-13 23:05:46,214 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:46,215 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120628355] [2019-10-13 23:05:46,215 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:46,215 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:46,215 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:46,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:46,377 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-13 23:05:46,377 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120628355] [2019-10-13 23:05:46,378 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:05:46,378 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:05:46,379 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114353799] [2019-10-13 23:05:46,379 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:05:46,379 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:05:46,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:05:46,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:05:46,380 INFO L87 Difference]: Start difference. First operand 9023 states and 13810 transitions. Second operand 3 states. [2019-10-13 23:05:46,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:05:46,904 INFO L93 Difference]: Finished difference Result 26926 states and 42329 transitions. [2019-10-13 23:05:46,904 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:05:46,905 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 117 [2019-10-13 23:05:46,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:05:47,042 INFO L225 Difference]: With dead ends: 26926 [2019-10-13 23:05:47,042 INFO L226 Difference]: Without dead ends: 17952 [2019-10-13 23:05:47,900 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 23:05:47,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17952 states. [2019-10-13 23:05:48,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17952 to 17902. [2019-10-13 23:05:48,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17902 states. [2019-10-13 23:05:48,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17902 states to 17902 states and 28102 transitions. [2019-10-13 23:05:48,727 INFO L78 Accepts]: Start accepts. Automaton has 17902 states and 28102 transitions. Word has length 117 [2019-10-13 23:05:48,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:05:48,728 INFO L462 AbstractCegarLoop]: Abstraction has 17902 states and 28102 transitions. [2019-10-13 23:05:48,728 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:05:48,728 INFO L276 IsEmpty]: Start isEmpty. Operand 17902 states and 28102 transitions. [2019-10-13 23:05:48,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2019-10-13 23:05:48,732 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:48,732 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:05:48,732 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:48,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:48,733 INFO L82 PathProgramCache]: Analyzing trace with hash 1338842519, now seen corresponding path program 1 times [2019-10-13 23:05:48,733 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:48,733 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386598402] [2019-10-13 23:05:48,733 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:48,734 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:48,734 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:48,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:48,869 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-13 23:05:48,870 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386598402] [2019-10-13 23:05:48,870 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:05:48,870 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:05:48,870 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196866217] [2019-10-13 23:05:48,871 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:05:48,871 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:05:48,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:05:48,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:05:48,872 INFO L87 Difference]: Start difference. First operand 17902 states and 28102 transitions. Second operand 3 states. [2019-10-13 23:05:49,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:05:49,685 INFO L93 Difference]: Finished difference Result 19063 states and 30094 transitions. [2019-10-13 23:05:49,686 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:05:49,686 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 121 [2019-10-13 23:05:49,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:05:49,809 INFO L225 Difference]: With dead ends: 19063 [2019-10-13 23:05:49,809 INFO L226 Difference]: Without dead ends: 19050 [2019-10-13 23:05:49,823 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 23:05:49,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19050 states. [2019-10-13 23:05:50,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19050 to 19005. [2019-10-13 23:05:50,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19005 states. [2019-10-13 23:05:50,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19005 states to 19005 states and 30007 transitions. [2019-10-13 23:05:50,996 INFO L78 Accepts]: Start accepts. Automaton has 19005 states and 30007 transitions. Word has length 121 [2019-10-13 23:05:50,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:05:50,997 INFO L462 AbstractCegarLoop]: Abstraction has 19005 states and 30007 transitions. [2019-10-13 23:05:50,997 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:05:50,997 INFO L276 IsEmpty]: Start isEmpty. Operand 19005 states and 30007 transitions. [2019-10-13 23:05:51,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2019-10-13 23:05:51,004 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:51,004 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 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] [2019-10-13 23:05:51,005 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:51,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:51,005 INFO L82 PathProgramCache]: Analyzing trace with hash -706572927, now seen corresponding path program 1 times [2019-10-13 23:05:51,005 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:51,005 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125066309] [2019-10-13 23:05:51,006 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:51,006 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:51,006 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:51,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:51,176 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2019-10-13 23:05:51,176 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125066309] [2019-10-13 23:05:51,177 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1251917457] [2019-10-13 23:05:51,177 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 23:05:51,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:51,743 INFO L256 TraceCheckSpWp]: Trace formula consists of 3397 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 23:05:51,761 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:05:51,843 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-13 23:05:51,844 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:05:52,351 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2019-10-13 23:05:52,352 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 23:05:52,352 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 4] total 10 [2019-10-13 23:05:52,352 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403568924] [2019-10-13 23:05:52,353 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 23:05:52,353 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:05:52,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 23:05:52,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-10-13 23:05:52,354 INFO L87 Difference]: Start difference. First operand 19005 states and 30007 transitions. Second operand 4 states.